CN221010019U

CN221010019U - DC motor driving device and light-emitting diode dimming device

Info

Publication number: CN221010019U
Application number: CN202321757924.7U
Authority: CN
Inventors: 何雯欣
Original assignee: Nengson Technology Co ltd
Current assignee: Nengson Technology Co ltd
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2024-05-24
Anticipated expiration: 2033-07-06

Abstract

The utility model relates to a direct current motor driving device and a light-emitting diode dimming device. The direct current motor driving device comprises a power receiving end electronic system Type-C connector, a transistor switch, a sensing resistor, a speed regulating key, a resistor speed regulating module and a speed regulating chip; the speed regulation chip comprises an overcurrent protection setting module, a working voltage and current setting module, a power supply end power supply state analysis module, a USB-PD protocol module, a switch driving module, a resistance speed regulation setting input module and a key speed regulation input module. The light-emitting diode dimming device comprises a light-emitting diode power setting module, a dimming signal input module, a power supply end power supply state analysis module, a working voltage and current setting module, an overcurrent protection setting module and a USB-PD protocol module.

Description

DC motor driving device and light-emitting diode dimming device

Technical Field

The present utility model relates to a dc motor driving device and a led dimming device, and more particularly, to a dc motor driving device directly using a USB-PD power source to drive a dc motor and a led dimming device directly driven by a USB PD power supply device.

Background

The existing driving mode of the direct current motor, such as a fan, is to utilize a PWM signal to adjust the rotating speed of the direct current motor, and in terms of hardware implementation, the direct current motor needs to be matched with a PWM generator, a speed regulator and a special external power supply to provide output voltage. The speed regulator is internally provided with a control chip, for example, a control chip of the quick-setting Qi technology, the model is RT8749A, and the like. However, the above implementation has the problems of more components and complex circuit.

In recent years, the Light Emitting Diode (LED) lighting industry has rapidly developed, and a driving device used for the characteristics of a light emitting diode on Voltage (VF) and an operating current component is currently provided with a control circuit and a Metal Oxide Semiconductor (MOS) component for controlling a current switch, regardless of whether the driving device is driven by a Linear (Linear) or a step-up/step-down switch (Switching), wherein the size of the MOS component is directly related to the driving current of the Light Emitting Diode (LED) and the light emitting brightness of the whole system.

In recent years, 3C industry has been rapidly developed, for the USB association of Power requirements, a Power supply end device (Provider) capable of providing multiple Power output types is defined, a PD protocol device can connect a Power supply end and a Power receiving end Type-C transmission line through a Type-C connector of a Power receiving end electronic system, and is linked with the Power supply end USB-Type-C connector through a USB PD, the Power supply end device (Provider) can perform a protocol through a Power supply end PD protocol signal transmission line included, and can provide a programmable Power supply mode (PPS) capable of providing a voltage within a specific range in addition to an output Power with a fixed voltage of 5 volts, 9 volts, 15 volts, 20 volts, etc. through a Power output transmission line of the USB PD Power supply end, and can communicate through a protocol of a Power Delivery (PD) specification to provide a safe and reliable Power supply of the Power receiving end device (Consumer).

Disclosure of Invention

The utility model aims to provide a direct current motor driving device directly using a USB-PD power supply, which can achieve the function of controlling the rotating speed of the direct current motor by directly using a universal USB power supply device and adding a speed regulating key and a resistor speed regulating module without using a PWM generator, a speed regulator and a special external power supply, thereby greatly simplifying the circuit architecture and reducing the cost.

The utility model also provides a light emitting diode dimming device directly driven by the USB PD power supply end device, which aims at a programmable power supply mode (PPS) mode provided by the PD power supply end device, analyzes and converts according to a dimming control and power setting requirement target on the device, and carries out a required USB PD protocol to obtain target voltage and current meeting the requirement of the device.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A dc motor driving apparatus using a USB power source, comprising:

A Type-C connector 41 of a power receiving end electronic system, wherein the Type-C connector 41 of the power receiving end electronic system is used for electrically connecting with a USB-PD power supply end device 20;

a transistor switch 42, wherein a drain electrode of the transistor switch 42 is electrically connected to the Type-C connector 41 of the power receiving end electronic system, a source electrode of the transistor switch 42 is connected to an input end of the dc motor 10, and a gate electrode of the transistor switch 42 is controlled by the switch driving module 38 of the speed regulation chip 30;

a sense resistor 43 for electrically connecting the dc motor 10;

a governor button 44;

A resistor speed regulation module 45; and

The speed regulation chip 30 is electrically connected with the Type-C connector 41 of the power receiving end electronic system, and the speed regulation chip 30 comprises an overcurrent protection setting module 31, a working voltage and current setting module 32, a power supply end power supply state analysis module 36, a USB-PD protocol module 37, a switch driving module 38, a resistance speed regulation setting input module 39 and a key speed regulation input module 40;

The overcurrent protection setting module 31 is electrically connected to the sensing resistor 43, the usb-PD protocol module 37 is electrically connected to the Type-C connector 41 of the power receiving end electronic system, the switch driving module 38 is electrically connected to the gate of the transistor switch 42, the key speed regulation input module 40 is electrically connected to the speed regulation key 44, and the resistance speed regulation setting input module 39 is electrically connected to the resistance speed regulation module 45; and

The operating voltage and current setting module 32 outputs a control command to the switch driving module 38 to control the on/off of the transistor switch 42 according to a voltage value outputted by the power supply status analysis module 36, a highest rotation speed voltage set value provided by the resistance speed regulation setting input module 39, a speed regulation set value provided by the key speed regulation input module 40, and a current value detected by the overcurrent protection setting module 31.

The resistor speed adjusting module 45 includes a set resistor 45a, and the set resistor 45a is a fixed resistor.

When the values of the setting resistor 45a are different, different maximum rotation speed voltages and speed regulation level signals are generated.

When the operating voltage and current setting module 32 receives the voltage value outputted by the power supply end power state analysis module 36 being higher than a predetermined value, the operating voltage and current setting module 32 outputs an off signal to the switch driving module 38 to turn off the transistor switch 42.

When the current flowing through the sensing resistor 43 is too large, the overcurrent protection setting module 31 sends an overcurrent signal to the operating voltage and current setting module 32, and the operating voltage and current setting module 32 receives the overcurrent signal and sends an off signal to the switch driving module 38 to turn off the transistor switch 42.

A dc motor driving apparatus using a USB power source, comprising:

a sense resistor 43 for electrically connecting the dc motor 10;

A resistor speed regulation module 45; and

The speed regulation chip 30 is electrically connected with the Type-C connector 41 of the power receiving end electronic system, and the speed regulation chip 30 comprises an overcurrent protection setting module 31, a working voltage and current setting module 32, a power supply end power supply state analysis module 36, a USB-PD protocol module 37, a switch driving module 38 and a resistance speed regulation setting input module 39;

The overcurrent protection setting module 31 is electrically connected to the sensing resistor 43, the usb-PD protocol module 37 is electrically connected to the Type-C connector 41 of the power receiving end electronic system, the switch driving module 38 is electrically connected to the gate of the transistor switch 42, and the resistance speed regulation setting input module 39 is electrically connected to the resistance speed regulation module 45; and

The working voltage and current setting module 32 performs a protocol through the USB-PD protocol module 37 after receiving all the options of the power supply voltage value obtained by the power supply state analysis module 36, a highest rotation speed voltage set value provided by the resistance speed regulation setting input module 39, a speed regulation set value provided by the resistance speed regulation setting input module 39, and the current value detected by the overcurrent protection setting module 31, and the protocol power supply outputs a required voltage and a control command to the switch driving module 38 to control the on and off of the transistor switch 42.

The resistance speed regulation module comprises a variable resistor 45b.

When the values of the variable resistor 45b are different, different maximum rotation speed voltages and speed regulation level signals are generated.

When the current flowing through the sensing resistor 43 is too large, the overcurrent protection setting module 31 sends an overcurrent signal to the operating voltage and current setting module 32, and the operating voltage and current setting module 32 receives the overcurrent signal and sends a turn-off signal to the switch driving module 38 to turn off the transistor switch 42.

A light emitting diode dimming device directly driven by a programmable power mode of a PD power supply, comprising:

A led power setting module 53 for obtaining the power setting signal of the system and transmitting the power setting data to the operating voltage and current setting module 32 for setting the led assembly 46 used in the driving system; and

A dimming signal input module 54 for obtaining a dimming setting of the device and transmitting the dimming setting to the operating voltage current setting module 32; and

A power supply status analysis module 36 for analyzing all power supply options available to the USB-PD power supply device 20 via the USB-PD protocol module 37, and transmitting the analyzed power supply option data to the operating voltage and current setting module 32; and

The working voltage and current setting module 32 integrates the data of the light emitting diode power setting module 53, the dimming signal input module 54, the power supply end power state analysis module 36 and the overcurrent protection setting module 31, analyzes and processes the programmable power supply mode options of the power supply end power supply and the conditions of the light emitting diode dimming requirement, and sets the voltage and the current of the USB-PD power supply end device 20 through the USB-PD protocol module 37; and

The overcurrent protection setting module 31 is used for continuously monitoring the working current of the light emitting diode assembly 46 and transmitting the current data to the working voltage and current setting module 32 for real-time analysis; and

A USB-PD protocol module 37, for performing voltage protocol requirements between the powered device and the USB-PD power supply device 20, transmitting data to the power supply state analysis module 36, obtaining a set voltage, and transmitting the voltage and current setting requirements of the operating voltage and current setting module 32 to the USB-PD power supply device 20.

The led power setting module 53 obtains the voltage and current data of the led module 46 used by the system, and converts the voltage and current data into the protocol requirements of the programmable power mode of the USB-PD power supply device 20 through the operation voltage and current setting module 32.

The dimming signal input module 54 continuously obtains the dimming setting data, wherein the setting mode of the data includes pulse width modulation, input voltage level, key or touch signal input, and width variation of high and low voltages, and when the dimming setting is changed, the protocol requirement of the programmable power supply mode of the USB-PD power supply terminal device 20 is changed through analysis of the working voltage and current setting module 32, so as to realize the dynamic dimming function.

The power supply end power state of the power supply end power state analysis module 36 is connected and obtains all power option data through the USB type-C transmission line 26 and the USB-PD protocol module 37, the power option data obtained by the power supply end power state analysis module 36 includes voltage data of fixed voltage output and voltage output range of programmable voltage, and the programmable power data obtained by the power supply end power state analysis module 36 is transmitted to the working voltage current setting module 32 for processing.

The working voltage and current setting module 32 controls the driving operation mode of the led module 46 according to the information provided by each module, including a current dimming operation mode and a voltage dimming operation mode, wherein the current dimming operation mode performs protocol adjustment for the output current of the programmable power supply mode, so as to directly realize the dimming control of the led; the voltage dimming working mode carries out protocol adjustment on the output voltage of the programmable power supply mode, and dimming current control of the light emitting diode is completed through current change of the monitoring resistor by the adjusted voltage.

The over-current protection setting module 31 continuously obtains the voltage of the sensing resistor 43, provides real-time current information of the working voltage and current setting module 32, and when the detected voltage exceeds a set value, the working voltage and current setting module 32 performs the protection action of the led through the USB PD protocol, wherein the protection action includes reducing the output voltage and current in the programmable power supply mode, forcing the power supply state of the power supply terminal to enter the reset mode, and changing the state of the protocol control chip 27 to be offline.

Compared with the prior art, the invention has the beneficial effects that:

The utility model can control the rotating speed of the direct current motor by directly utilizing the universal USB power supply device and adding the setting of the speed regulating key and the resistance speed regulating module without using a PWM generator, a speed regulator and a special external power supply, thereby greatly simplifying the circuit architecture and reducing the cost.

The utility model provides a light-emitting diode current control dimming mode directly driven by a programmable power supply mode of a PD power supply, when the device analyzes that the converted dimming driving current requirement is within the current control range of the programmable power supply mode (PPS) of a USB PD power supply end device, the device performs required USB PD protocol control on the current of the programmable power supply mode (PPS) of the USB PD power supply end according to the requirement targets of dimming and power setting, directly increases or reduces the output current of the USB PD power supply end, and realizes the dimming current driving of a light-emitting diode.

The utility model provides a light-emitting diode voltage control dimming mode directly driven by a programmable power supply mode of a PD power supply, which is used for carrying out required USB PD protocol control on the voltage of the programmable power supply mode (PPS) of a USB P power supply end according to the dimming and power setting requirement targets, directly carrying out protocol requirements of directly increasing or reducing the output voltage of the USB PD power supply end, and realizing dimming current control of a light-emitting diode by controlling the slight increase or reduction of the driving voltage and the matching combination of the driving voltage and a current monitoring resistor.

The utility model provides a dimming chip without a metal oxide semiconductor field effect transistor (MOS) switch component, which is used for controlling a required USB PD protocol according to the voltage and current of a programmable power supply mode (PPS) of a USB PD power supply end according to the dimming and power setting requirement targets and directly providing driving power required by dimming of a light emitting diode component.

The utility model provides an overcurrent protection of a dimming chip, which continuously acquires data of a sensing resistor, carries out overcurrent protection detection of a light-emitting diode component in real time, and immediately carries out required USB PD protocol control when current detection voltage exceeds a set value to request a USB PD power supply end to enter a specified safety protection mode.

Drawings

FIG. 1 is a block diagram of a system application circuit of a first preferred embodiment of a DC motor driving apparatus according to the present utility model;

FIG. 2 is a circuit diagram of a first preferred embodiment of the DC motor driving apparatus of the present utility model;

FIG. 3 is a block diagram of a system application circuit of a second preferred embodiment of the DC motor driving apparatus of the present utility model;

FIG. 4 is a circuit diagram of a second preferred embodiment of the DC motor driving apparatus of the present utility model;

FIG. 5 is a schematic diagram of a system of a light emitting diode Pulse Width Modulation (PWM) dimming device driven directly by a USB PD power end device of the present utility model;

fig. 6 is a schematic diagram of a system of a dimming device of the present utility model for directly driving a led general dimming signal by a USB PD power end device.

Wherein the reference numerals are as follows:

10. DC motor

20. USB-PD power supply end device

25. USB-Type C connector at power supply end

26. USB Type C transmission line

27. Protocol control chip

28. Power output module

30. Speed regulation chip

31. Overcurrent protection setting module

32. Working voltage and current setting module

36. Power supply end power state analysis module

37. USB-PD protocol module

38. Switch driving module

39. Resistance speed regulation setting input module

40. Key speed-regulating input module

41. Type-C connector of power receiving end electronic system

42. Transistor switch

43. Sensing resistor

44. Speed regulating key

45. Resistor speed regulating module

45A, set resistance

45B, variable resistor

46. Light emitting diode assembly

47. Pulse width modulation dimming device for light emitting diode

48. Pulse width modulation dimming control device

49. Pulse width modulation dimming input signal

50. Power setting input signal for LED assembly

51. LED current detection input voltage signal

52. Dimming chip

53. LED power setting module

54. Dimming signal input module

55. Light-emitting diode general dimming signal device

56. Control device for directly outputting dimming signal

57. Directly input dimming signal

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings.

The utility model provides a direct current motor driving device which directly uses a USB-PD power supply to drive a direct current motor.

Referring to fig. 1 to 4, the present utility model obtains different voltages and currents provided by a USB-PD power supply device directly through a USB-PD (USB Power Delivery, USB power transmission) protocol, so as to drive the dc motor 10 to generate different rotational speeds. In addition, the transistor switch 42 can be driven by the operating voltage and current setting module 32, and the functions of turning off, overvoltage protection, overload protection and the like of the direct current motor 10 can be realized. Preferably, the dc motor 10 is a fan or a motor.

The DC motor driving device is electrically connected to a USB-PD power supply end device 20 and a DC motor 10.

The USB-PD power supply 20 is a USB charger, which has a USB-PD (USB Power Delivery, USB power transfer) function, and is externally connected to an AC power supply (not shown in the drawing) or a DC power supply (not shown in the drawing). The USB-PD power device 20 includes a power USB-Type C connector 25, a USB-Type C transmission line 26, a protocol control chip 27, and a power output module 28. The protocol control chip 27 and the power output module 28 are respectively and electrically connected with the power supply end USB-Type C connector 25. After internal rectification and power conversion, a dc voltage V _BUS and a protocol control signal are output from the USB-Type C connector 25 (e.g., a Type-C connector) at the power supply end. The dc motor driving device receives the dc voltage V _BUS to drive the dc motor 10.

Please refer to fig. 1 and fig. 2. Fig. 1 is a block diagram of a system application circuit of a first preferred embodiment of a dc motor driving device according to the present utility model. Fig. 2 is a circuit diagram of a first preferred embodiment of the dc motor driving device of the present utility model.

In a first preferred embodiment of the present utility model, the dc motor driving device includes a speed adjusting chip 30, a Type-C connector 41 of a power receiving end electronic system, a transistor switch 42, a sensing resistor 43, a speed adjusting button 44 and a resistor speed adjusting module 45.

The Type-C connector 41 of the powered electronic system is electrically connected to the USB-Type C connector 25 of the USB-PD power supply device 20 through the USB-Type C transmission line 26, and is configured to receive the dc voltage V _BUS transmitted by the USB-PD power supply device 20. The Type-C connector 41 of the power receiving end electronic system is electrically connected to the speed regulating chip 30, so as to drive the dc motor 10 through the speed regulating chip 30.

The drain electrode of the transistor switch 42 is electrically connected to the Type-C connector 41 of the power receiving end electronic system, and the source electrode of the transistor switch 42 is connected to the input end of the dc motor 10, and the gate electrode of the transistor switch 42 is controlled by the switch driving module 38 of the speed regulation chip 30.

The sensing resistor 43 is electrically connected to the dc motor 10. Specifically, a first end of the sensing resistor 43 is connected to the output terminal of the dc motor 10, and a second end of the sensing resistor 43 is grounded.

The speed regulation chip 30 is electrically connected to the Type-C connector 41 of the powered electronic system, and the speed regulation chip 30 includes an overcurrent protection setting module 31, a working voltage and current setting module 32, a power supply status analysis module 36, a USB-PD protocol module 37, a switch driving module 38, a resistance speed regulation setting input module 39, and a key speed regulation input module 40.

The input end of the overcurrent protection setting module 31 is electrically connected to the input end of the sensing resistor 43, and the output end of the overcurrent protection setting module 31 is electrically connected to the operating voltage and current setting module 32.

The USB-PD protocol module 37 is electrically connected to the Type-C connector 41 of the powered electronic system, the USB-PD protocol module 37 is electrically connected to the power supply status analysis module 36, and the power supply status analysis module 36 is electrically connected to the working voltage and current setting module 32.

The switch driving module 38 is electrically connected to the gate of the transistor switch 42, and the switch driving module 38 is electrically connected to the operating voltage and current setting module 32.

The key speed adjusting input module 40 is electrically connected to the speed adjusting key 44, and the key speed adjusting input module 40 is electrically connected to the working voltage and current setting module 32.

The resistance speed regulation setting input module 39 is electrically connected to the resistance speed regulation module 45, and the resistance speed regulation setting input module 39 is electrically connected to the working voltage and current setting module 32.

The operating voltage and current setting module 32 is electrically connected to the USB-PD protocol module 37.

The operating voltage and current setting module 32 outputs a control command to the switch driving module 38 to control the on/off of the transistor switch 42 according to a voltage value outputted by the power state analysis module 36, a maximum rotation speed voltage set value provided by the resistance speed regulation setting input module 39, a speed regulation set value provided by the key speed regulation input module 40, and a current value detected by the overcurrent protection setting module 31.

Referring to table one, the resistor speed adjusting module 45 includes a set resistor 45a, in this embodiment, the set resistor 45a is a fixed resistor with a fixed resistance, but can be removed and replaced, and is matched with the speed adjusting chip 30, when the values of the set resistor 45a are different, different maximum rotation speed voltages and speed adjusting grade signals can be generated, as shown in table one, when the value of the set resistor 45a is 1000kΩ, the maximum rotation speed voltage can be generated at the TP end of the speed adjusting chip 30 by voltage division, and 6 speed adjusting grades can be generated, namely 0V of the 1 st order, 5V of the 2 nd order, 9V of the 3 rd order, 12V of the 4 th order, 15V of the 5 th order and 20V of the 6 th order. When the value of the resistor 45a is 300kΩ, the corresponding maximum rotation voltage is 15V, and 5 speed steps of 0V at 1 st, 5V at 2 nd, 9V at 3 rd, 12V at 4 th, and 15V at 5 th can be generated. The rest and so on. When the resistor 45a is set to a value of 10kΩ, the maximum rotation voltage generated is 0V, that is, the dc motor 10 is not driven.

List one

Setting resistance value

Order of

1 St order

2 Nd order

3 Rd order

Fourth order of 4

5 Th order

6 Th order

1000KΩ

6

0V

5V

9V

12V

15V

20V

300KΩ

5

0V

5V

9V

12V

15V

150KΩ

4

0V

5V

9V

12V

70KΩ

3

0V

5V

9V

30KΩ

2

0V

5V

10KΩ

0V

The resistor speed regulation setting input module 39 receives the setting signal output by the resistor speed regulation module 45 and outputs the setting signal to the working voltage and current setting module 32. The operating voltage and current setting module 32 sends a PD (Power Delivery) voltage request signal to the USB-PD protocol module 37. The USB-PD protocol module 37 sends a signal to the protocol control chip 27 in the USB-PD power end device 20. The protocol control chip 27 controls the power output module 28 to output the required voltage set by the speed regulating chip 30 for driving the dc motor 10.

The USB-PD protocol module 37 receives a voltage protocol signal output by the protocol control chip 27 and outputs the voltage protocol signal to the power supply status analysis module 36, the power supply status analysis module 36 analyzes a voltage value and a power status provided by the USB-PD power supply device 20 to the working voltage and current setting module 32, and the working voltage and current setting module 32 integrally analyzes the voltage value, a maximum rotation speed voltage set value provided by the resistance speed regulation setting input module 39, a speed regulation setting provided by the key speed regulation input module 40, and a current value detected in the overcurrent protection setting module 31, and then makes a determination, and provides the result to the USB-PD protocol module 37 for subsequent working voltage and current setting and control.

In this case, if the operating voltage and current setting module 32 receives the voltage outputted by the power output module 28 being higher than a predetermined value or the voltage outputted by the power output module 28 being not the voltage agreed by both, the operating voltage and current setting module 32 outputs an off signal to the switch driving module 38 to turn off the transistor switch 42 to protect the dc motor 10.

In addition, the current flowing through the dc motor 10, i.e. the current flowing through the sensing resistor 43, can be converted into a voltage signal through the sensing resistor 43, and then detected by the overcurrent protection setting module 31. When the current flowing through the sensing resistor 43 is too large, the overcurrent protection setting module 31 sends an overcurrent signal to the operating voltage and current setting module 32, and the operating voltage and current setting module 32 receives the overcurrent signal and sends a turn-off signal to the switch driving module 38 to turn off the transistor switch 42 to protect the dc motor 10.

When the working voltage and current setting module 32 completes the above-mentioned operation and obtains the dc voltage V _BUS output by the USB-PD power supply terminal device 20, it also receives the input signal of the waiting speed adjusting Key 44 at the same time, wherein the speed adjusting Key 44 is a Key switch, and each time the Key switch is pressed, a square wave signal is generated to the Key end of the speed adjusting chip 30, so that the Key speed adjusting input module 40 receives the square wave signal. The key speed adjusting input module 40 transmits a control signal to the working voltage and current setting module 32, and the working voltage and current setting module 32 sends a new required voltage protocol via the USB-PD protocol module 37 according to the maximum voltage value set by the resistor speed adjusting setting input module 39. And after the protocol control chip 27 receives the new required voltage protocol, it controls the power output module 28 to output a new PD-specified dc voltage to the Type-C connector 41 of the power receiving electronic system, and the dc motor 10 can be controlled in this way to change the rotational speed.

The operating voltage and current setting module 32 has a circulating voltage control function collocated with the key speed regulation input module 40, the circulating voltage control function starts from 0V, and when the operating voltage and current setting module 32 counts and detects that the input signal of the speed regulation key 44 is the setting for stopping the fan, at this time, the operating voltage and current setting module 32 controls the switch driving module 38 to turn off the direct current voltage V _BUS through the transistor switch 42, and stops supplying power to the direct current motor 10, so as to achieve the function of stopping the fan.

Please refer to fig. 3 and fig. 4. Fig. 3 is a block diagram of a system application circuit of a second preferred embodiment of the dc motor driving device of the present utility model. Fig. 4 is a circuit diagram of a second preferred embodiment of the dc motor driving device of the present utility model.

The second preferred embodiment of the DC motor driving device of the present utility model operates in a similar manner to the first embodiment described above, except that the present embodiment utilizes a variable resistor 45b to achieve the function of modulating the rotational speed of the DC motor 10.

In a second preferred embodiment of the present utility model, the dc motor driving device includes a speed adjusting chip 30, a Type-C connector 41 of a power receiving end electronic system, a transistor switch 42, a sensing resistor 43 and a resistor speed adjusting module 45.

The speed regulation chip 30 is electrically connected to the Type-C connector 41 of the powered electronic system, and the speed regulation chip 30 includes an overcurrent protection setting module 31, a working voltage and current setting module 32, a power supply status analysis module 36, a USB-PD protocol module 37, a switch driving module 38, and a resistance speed regulation setting input module 39.

The working voltage and current setting module 32 performs a protocol by the USB-PD protocol module 37 according to all options of the voltage value of the power supply terminal obtained by the power supply terminal power state analysis module 36, a highest rotation speed voltage set value provided by the resistance speed regulation setting input module 39, a speed regulation set value provided by the resistance speed regulation setting input module 39, and a current value detected by the overcurrent protection setting module 31, and outputs a required voltage to the power supply terminal and a control command to the switch driving module 38 to control the on and off of the transistor switch 42.

The resistance speed adjusting module 45 includes a variable resistor 45b.

The USB-PD protocol module 37 receives a voltage protocol signal output by the protocol control chip 27 and outputs the voltage protocol signal to the power supply status analysis module 36, the power supply status analysis module 36 analyzes a voltage value and a power status provided by the USB-PD power supply device 20 to the working voltage and current setting module 32, and the working voltage and current setting module 32 integrally analyzes the voltage value, a maximum rotation speed voltage set value provided by the resistance speed regulation setting input module 39, a speed regulation setting provided by the resistance speed regulation setting input module 39, and a current value detected by the overcurrent protection setting module 31, and then makes a determination, and provides the result to the USB-PD protocol module 37 for performing subsequent working voltage and current setting and control.

After the working voltage and current setting module 32 completes the above-mentioned operation and obtains the dc voltage V _BUS outputted from the USB-PD power supply terminal device 20, it detects and waits for the adjustment of the variable resistor 45b to perform the speed regulation control. By changing the resistance value of the variable resistor 45b, the voltage control signal input and output by the resistor speed regulation setting input module 39 can be changed, and the set voltage control signal is sent to the working voltage and current setting module 32 to set the working voltage, and a new required voltage protocol is sent out through the USB-PD protocol module 37. And after receiving the new required voltage protocol, the protocol control chip 27 controls the power output module 28 to output a new PD-standard dc voltage driving device, and the dc motor 10 is controlled by the resistance change of the variable resistor 45b to change the rotation speed. For example, when the resistance value of the variable resistor 45b is 5kΩ, the rotation speed is zero; when the resistance value of the variable resistor 45b is 20kΩ, the rotation speed is 20%; when the resistance value of the variable resistor 45b is 50kΩ, the rotation speed is 40%; when the resistance value of the variable resistor 45b is 100kΩ, the rotation speed is 60%; when the resistance value of the variable resistor 45b is 200kΩ, the rotation speed is 80%; when the resistance value of the variable resistor 45b is 500kΩ, the rotation speed is 100%.

The utility model also provides a light-emitting diode dimming device directly driven by the USB PD power supply end device.

The USB-PD power supply 20 is a USB charger, which has a USB-PD (USB Power Delivery, USB power transfer) function, and is externally connected to an AC power supply (not shown in the drawing) or a DC power supply (not shown in the drawing). The USB-PD power device 20 includes a power USB-Type C connector 25, a USB-Type C transmission line 26, a protocol control chip 27, and a power output module 28. The protocol control chip 27 and the power output module 28 are respectively and electrically connected with the power supply end USB-Type C connector 25. After internal rectification and power conversion, a dc voltage V _BUS and a protocol control signal are output from the USB-Type C connector 25 (e.g., a Type-C connector) at the power supply end. The dc motor driving device receives the dc voltage V _BUS to drive the led assembly 46.

As shown in fig. 5, in the first preferred embodiment of the led dimmer device of the present utility model directly driven by the USB PD power end device, the led pwm dimmer device 47 of the present utility model directly driven by the USB PD power end device is electrically connected to the USB-PD power end device 20; the led pwm dimming device 47 includes a dimming chip 52, a Type-C connector 41 of the power receiving end electronic system, a sensing resistor 43, a pwm dimming control device 48, and an led assembly 46.

The Type-C connector 41 of the powered electronic system is electrically connected to the USB-Type C connector 25 of the USB-PD power supply device 20 through the USB-Type C transmission line 26, and is configured to receive the dc voltage V _BUS transmitted by the USB-PD power supply device 20.

The Type-C connector 41 of the power receiving end electronic system is electrically connected to the input end of the led assembly 46, the output end of the led assembly 46 is connected to one end of the sensing resistor 43, and the other end of the sensing resistor 43 is grounded.

The dimming chip 52 is electrically connected to the Type-C connector 41 of the powered electronic system, and the dimming chip 52 includes a USB-PD protocol module 37, a power supply status analysis module 36, a light emitting diode power setting module 53, a dimming signal input module 54, an overcurrent protection setting module 31, and a working voltage and current setting module 32.

The input end of the overcurrent protection setting module 31 is electrically connected to the input end of the sensing resistor 43, and is used for continuously acquiring the led current detection input voltage signal 51. The output end of the overcurrent protection setting module 31 is electrically connected with the working voltage and current setting module 32.

The USB-PD protocol module 37 is electrically connected to the Type-C connector 41 of the powered electronic system, and the USB-PD protocol module 37 is electrically connected to the power status analysis module 36, so as to send all the obtained power options provided by the power device to the power status analysis module 36 for analysis. The power supply status analysis module 36 is electrically connected to the operating voltage and current setting module 32, and is configured to transmit the analyzed programmable power mode (PPS) data to the operating voltage and current setting module 32.

The dimming signal input module 54 is electrically connected to the pwm dimming control device 48, and is configured to continuously obtain the pwm dimming input signal 49 sent by the pwm dimming control device 48. The dimming signal input module 54 is electrically connected to the operating voltage and current setting module 32, and is configured to update the demand target in real time and transmit the demand target to the operating voltage and current setting module 32 for voltage and current integration, conversion and analysis.

The led power setting module 53 is electrically connected to the operating voltage and current setting module 32. The led power setting module 53 obtains the external led device power setting input signal 50, and transmits the device driving voltage and current data to the operating voltage and current setting module 32 for voltage-current integrated conversion analysis.

The USB-PD power end device 20 may provide several different power options.

When the led pwm dimming device 47 directly driven by the programmable power supply mode of the PD power supply of the present utility model connects the Type-C connector 41 of the power receiving end electronic system of the present device with the USB-Type-C connector 25 of the power supply end through the USB Type-C transmission line 26, the USB-PD power supply end device 20 can communicate with the USB-PD protocol module 37 of the present device through the protocol control chip 27, obtain all the power options available to the present device, analyze the power options with the power supply end power status analysis module 36, transmit the analyzed programmable power supply mode (PPS) data to the working voltage current setting module 32, and obtain the required power output through the power output module 28 by performing the PD protocol through the USB-PD protocol module 37 of the present device.

The led power setting module 53 of the present device obtains the external led module power setting input signal 50, and sets the voltage and current data required by the led module 46 used in the present device, for example, the driving system uses three led modules in series, and uses two groups of three strings of led modules in parallel, and the led power setting module 53 transmits the module driving voltage and current data to the operating voltage and current setting module 32 for voltage-current integrated conversion analysis.

The dimming signal input module 54 of the device continuously acquires the pwm dimming input signal 49 sent by the pwm dimming control device 48, converts the set signal into a driving requirement target for the led, updates the requirement target in real time, and sends the requirement target to the operating voltage and current setting module 32 for voltage and current integration and conversion analysis.

The led pwm dimming device 47 configured by the present device, the data of the input dimming setting processed by the dimming signal input module 54 includes the pwm dimming input signal 49 sent by the pwm dimming control device 48, and the dimming signal input module 54 analyzes and converts the dimming control signal changes, and sends the result to the operating voltage and current setting module 32 for voltage and current integration and conversion analysis.

The working voltage and current setting module 32 of the device performs integration analysis aiming at the power supply options, power setting and real-time dimming setting requirements of the power supply end, the conversion module divides the driving mode of the light emitting diode assembly 46 into two control modes of current adjustment and voltage adjustment, converts the control modes into the voltage and current setting of a programmable power supply mode (PPS) according to the analyzed control conditions, transmits the voltage and current setting to the USB-PD power supply end device 20 through the USB-PD protocol module 37, obtains the power output of the device, and drives the light emitting diode assembly.

The working voltage and current setting module 32 of the device analyzes the voltage and current required by dimming the required led module 46, and when the device is in the current adjustment control mode, the working voltage and current setting module 32 directly performs current adjustment setting on the programmable power supply mode (PPS) of the power supply terminal through the USB-PD protocol module 37, so that the led module is directly driven by the current.

The working voltage and current setting module 32 of the device analyzes the voltage and current required for dimming the required led module 46, and when the device is in the voltage adjustment control mode, the working voltage and current setting module 32 performs voltage adjustment setting on the programmable power supply mode (PPS) of the power supply terminal through the USB-PD protocol module, and the driving current of the led module 46 will vary as the adjusted voltage flows through the sensing resistor 43.

The overcurrent protection setting module 31 of the device continuously acquires the sensing resistor 43 signal of the light emitting diode, when the light emitting diode current detects that the input voltage signal 51 exceeds the set value, the working voltage current setting module 32 immediately sets the USB-PD power supply end device 20 to enter a safety protection state through the USB-PD protocol module 37, and the protection state comprises reducing the output voltage current of the programmable power supply mode (PPS), forcing the power supply state of the power supply end (Provider) to enter a reset mode and changing the state of the protocol control chip 27 to be the device offline.

As shown in fig. 6, in the second preferred embodiment of the led dimming device directly driven by the USB PD power supply end device of the present utility model, the led general dimming signal device 55 directly driven by the USB PD power supply end device of the present utility model is electrically connected to the USB-PD power supply end device 20; the led general dimming signal device 55 includes a dimming chip 52, a Type-C connector 41 of the power receiving end electronic system, a sensing resistor 43, a control device 56 for directly outputting a dimming signal, and an led assembly 46.

The powered electronic system Type-C connector 41 is electrically connected to the power supply end USB-Type C connector 25 of the USB-PD power supply end device 20 through the USB Type C transmission line 26, and is configured to receive the dc voltage V _BUS transmitted by the USB-PD power supply end device 20.

The dimming signal input module 54 is electrically connected to the dimming signal direct output control device 56, and is configured to continuously obtain the directly input dimming signal 57 sent by the dimming signal direct output control device 56. The dimming signal input module 54 is electrically connected to the operating voltage and current setting module 32, and is configured to update the demand target in real time and transmit the demand target to the operating voltage and current setting module 32 for voltage and current integration, conversion and analysis.

The USB-PD power end device 20 may provide several different power options.

When the led general dimming signal device 55 directly driven by the programmable power supply mode of the PD power supply of the present utility model connects the Type-C connector 41 of the power receiving end electronic system of the present device with the USB-Type C connector 25 of the power supply end through the USB Type C transmission line 26, the USB-PD power supply end device 20 can communicate with the USB-PD protocol module 37 of the present device through the protocol control chip 27, obtain all the power options available to the power supply end device, analyze the power options with the power supply end power status analysis module 36, transmit the analyzed programmable power supply mode (PPS) data to the working voltage and current setting module 32, and obtain the required power output through the power output module 28 by performing the PD protocol through the USB-PD protocol module 37 of the present device.

The data of the input dimming setting processed by the dimming signal input module 54 includes a direct input dimming signal 57 sent by the control device 56 for direct output of the dimming signal, and the direct input dimming signal 57 includes an input voltage level, a key or touch signal input, and a width change of high and low voltages. The dimming signal input module 54 analyzes and converts the dimming control signal variation, and transmits the dimming control signal variation to the working voltage and current setting module 32 for voltage and current integration and conversion analysis.

The general dimming signal device 55 of the light emitting diode formed by the device comprises the direct input dimming signal 57 sent by the control device 56 for directly outputting the dimming signal, wherein the data of the input dimming setting processed by the dimming signal input module 54 are analyzed and converted by the dimming signal input module 54, and then transmitted to the working voltage and current setting module 32 for voltage and current integration and conversion analysis.

Claims

1. A direct current motor driving apparatus, characterized in that the direct current motor driving apparatus comprises:

The power receiving end electronic system Type-C connector (41), wherein the power receiving end electronic system Type-C connector (41) is used for electrically connecting a USB-PD power supply end device (20);

The drain electrode of the transistor switch (42) is electrically connected with the Type-C connector (41) of the power receiving end electronic system, the source electrode of the transistor switch (42) is connected with the input end of the direct current motor (10), and the grid electrode of the transistor switch (42) is controlled by the switch driving module (38) of the speed regulating chip (30);

A sensing resistor (43) for electrically connecting the DC motor (10);

A governor button (44);

a resistor speed regulation module (45); and

The speed regulation chip (30) is electrically connected with the Type-C connector (41) of the power receiving end electronic system, and the speed regulation chip (30) comprises an overcurrent protection setting module (31), a working voltage and current setting module (32), a power supply end power supply state analysis module (36), a USB-PD protocol module (37), a switch driving module (38), a resistance speed regulation setting input module (39) and a key speed regulation input module (40);

The overcurrent protection setting module (31) is electrically connected with the sensing resistor (43), the USB-PD protocol module (37) is electrically connected with the Type-C connector (41) of the power receiving end electronic system, the switch driving module (38) is electrically connected with the grid electrode of the transistor switch (42), the key speed regulation input module (40) is electrically connected with the speed regulation key (44), and the resistance speed regulation setting input module (39) is electrically connected with the resistance speed regulation module (45); and

The working voltage and current setting module (32) outputs a control command to the switch driving module (38) to control the on and off of the transistor switch (42) according to a voltage value output by the power supply end power supply state analysis module (36), a highest rotating speed voltage set value provided by the resistance speed regulation setting input module (39), a speed regulation set value provided by the key speed regulation input module (40) and a current value detected by the overcurrent protection setting module (31).

2. The direct current motor driving device according to claim 1, wherein the resistance speed adjusting module (45) includes a set resistance (45 a), and the set resistance (45 a) is a fixed resistance.

3. The direct current motor driving device according to claim 2, wherein different maximum rotation speed voltages and speed regulation level signals are generated when the values of the set resistors (45 a) are different.

4. A dc motor driving apparatus as claimed in claim 3, wherein when the operating voltage and current setting module (32) receives the voltage value outputted from the power supply end power state analysis module (36) being higher than a predetermined value, the operating voltage and current setting module (32) outputs an off signal to the switch driving module (38) to turn off the transistor switch (42).

5. The direct current motor driving device according to claim 4, wherein the overcurrent protection setting module (31) sends an overcurrent signal to the operating voltage current setting module (32) when the current flowing through the sensing resistor (43) is excessive, and the operating voltage current setting module (32) sends a turn-off signal to the switch driving module (38) to turn off the transistor switch (42) when receiving the overcurrent signal.

6. A direct current motor driving apparatus, characterized in that the direct current motor driving apparatus comprises:

A sensing resistor (43) for electrically connecting the DC motor (10);

a resistor speed regulation module (45); and

The speed regulation chip (30) is electrically connected with the Type-C connector (41) of the power receiving end electronic system, and the speed regulation chip (30) comprises an overcurrent protection setting module (31), a working voltage and current setting module (32), a power supply end power supply state analysis module (36), a USB-PD protocol module (37), a switch driving module (38) and a resistance speed regulation setting input module (39);

The overcurrent protection setting module (31) is electrically connected with the sensing resistor (43), the USB-PD protocol module (37) is electrically connected with the Type-C connector (41) of the power receiving end electronic system, the switch driving module (38) is electrically connected with the grid electrode of the transistor switch (42), and the resistor speed regulation setting input module (39) is electrically connected with the resistor speed regulation module (45); and

The working voltage and current setting module (32) performs a protocol through the USB-PD protocol module (37) according to all options of the power supply end voltage value obtained by the power supply end power supply state analysis module (36), a highest rotating speed voltage set value provided by the resistance speed regulation setting input module (39), a speed regulation set value provided by the resistance speed regulation setting input module (39) and a current value detected by the overcurrent protection setting module (31), and the protocol power supply end outputs a required voltage and a control command to the switch driving module (38) so as to control the on and off of the transistor switch (42).

7. The direct current motor drive apparatus according to claim 6, wherein the resistance speed adjusting module includes a variable resistor (45 b).

8. The direct current motor driving apparatus according to claim 7, wherein different maximum rotation speed voltages and speed regulation level signals are generated when values of the variable resistor (45 b) are different.

9. The direct current motor driving device according to claim 8, wherein when the operating voltage and current setting module (32) receives the voltage value outputted by the power supply end power state analysis module (36) being higher than a predetermined value, the operating voltage and current setting module (32) outputs an off signal to the switch driving module (38) to turn off the transistor switch (42).

10. The dc motor driving device according to claim 9, wherein the over-current protection setting module (31) sends an over-current signal to the operating voltage current setting module (32) when the current flowing through the sensing resistor (43) is excessive, and the operating voltage current setting module (32) sends an off signal to the switch driving module (38) to turn off the transistor switch (42) when receiving the over-current signal.

11. A light emitting diode dimming device, the device comprising:

A light emitting diode power setting module (53) for acquiring a power setting signal of the system and transmitting power setting data to the operating voltage current setting module (32) for setting a light emitting diode assembly (46) used in the driving system; and

A dimming signal input module (54) for obtaining a dimming setting of the device and transmitting the dimming setting to the operating voltage current setting module (32); and

A power supply end power state analysis module (36) for analyzing all power supply options provided by the USB-PD power end device (20) obtained by the USB-PD protocol module (37) and transmitting the analyzed power supply option data to the working voltage and current setting module (32); and

The working voltage and current setting module (32) integrates the data of the light emitting diode power setting module (53), the dimming signal input module (54), the power supply end power supply state analysis module (36) and the overcurrent protection setting module (31), analyzes and processes the programmable power supply mode options of the power supply end power supply and the conditions of the light emitting diode dimming requirement, and sets the voltage and the current of the USB-PD power supply end device (20) through the USB-PD protocol module (37); and

The overcurrent protection setting module (31) is used for continuously monitoring the working current of the light-emitting diode assembly (46) and transmitting the current data to the working voltage and current setting module (32) for real-time analysis and processing; and

And the USB-PD protocol module (37) is used for carrying out voltage protocol requirements between the powered device and the USB-PD power supply end device (20), transmitting data to the power supply end power supply state analysis module (36) to obtain set voltage, and transmitting the voltage and current setting requirements of the working voltage and current setting module (32) to the USB-PD power supply end device (20).

12. The led dimmer device according to claim 11, wherein the led power setting module (53) obtains voltage and current data of the led assembly (46) used by the system, and converts the voltage and current data into protocol requirements for the programmable power mode of the USB-PD power end device (20) via the operating voltage and current setting module (32).

13. The led dimmer device according to claim 11, wherein the dimming signal input module (54) continuously obtains dimming setting data, the setting means of the data comprises pulse width modulation, input voltage level, key or touch signal input and width variation of high and low voltages, and when the dimming setting is changed, the protocol requirement of the programmable power supply mode of the USB-PD power supply terminal device (20) is changed through analysis of the operating voltage and current setting module (32), so as to realize the dynamic dimming function.

14. The led dimmer according to claim 11, wherein the power state of the power state analysis module (36) is connected to and obtains all the power option data via the USB Type-C transmission line (26) and the USB-PD protocol module (37), the power option data obtained by the power state analysis module (36) includes voltage data of a fixed voltage output and a voltage output range of a programmable voltage, and the programmable power data obtained by the power state analysis module (36) is transmitted to the operating voltage and current setting module (32) for processing.

15. The led dimmer apparatus as set forth in claim 11, wherein the operating voltage and current setting module (32) controls the driving operation mode of the led assembly (46) according to the information provided by each module, including a current dimming operation mode and a voltage dimming operation mode, the current dimming operation mode performing protocol adjustment for the output current of the programmable power supply mode to directly implement led dimming control; the voltage dimming working mode carries out protocol adjustment on the output voltage of the programmable power supply mode, and dimming current control of the light emitting diode is completed through current change of the monitoring resistor by the adjusted voltage.

16. The led dimmer device according to claim 11, wherein the over-current protection setting module (31) continuously obtains the voltage of the sensing resistor (43), provides real-time current information of the operating voltage and current setting module (32), and when the detected voltage exceeds the set value, the operating voltage and current setting module (32) performs the led protection action via USB PD protocol, and the protection action includes reducing the output voltage and current in the programmable power supply mode, forcing the power supply state of the power supply terminal to enter the reset mode, and changing the state of the protocol control chip (27) to be the device offline.