CN209402776U - Low-power-consumption driving circuit and electronic equipment - Google Patents

Abstract

The utility model relates to a kind of low-power-consumption driving circuit and electronic equipments.The low-power-consumption driving circuit includes: the first power module, second power supply module, control module, drive module and multiple light emitting diodes；Wherein, the first power module and control module are electrically connected with drive module respectively；The cathode of each light emitting diode is electrically connected with drive module, and the anode of each light emitting diode is electrically connected with second power supply module；First power module is configured as providing power supply to drive module；Second power supply module is configured as providing power supply to multiple LED；Control module is configured as the output electric current of control drive module；Drive module is configured as driving multiple lumination of light emitting diode under the control of control module.According to the utility model, the power consumption of driving circuit can be reduced while not reducing the brightness of light emitting diode.

Description

Low-power-consumption driving circuit and electronic equipment

Technical field

The utility model belongs to antenna technical field, more specifically, the utility model relates to a kind of low-power-consumption driving circuits And electronic equipment.

Background technique

With advances in technology with the development of society, the function of electronic equipment such as charging box, wearable device also tends to be more Sample needs to indicate corresponding function using multiple light emitting diodes (LED).Multiple LED generally use driving circuit to drive It is dynamic.

In general, using power supply to LED and its drive circuitry, but since the power consumption of driving circuit is larger, it can be to electronics The standby time and operating time of equipment have a huge impact.In the prior art, supply voltage is reduced to reduce in order to use The mode of the brightness of LED achievees the purpose that the power consumption for reducing driving circuit.

But the brightness of LED reduces the indicating effect that will affect to the function of electronic equipment.Therefore, it has been recognised by the inventors that needing It to be improved at least one problem existing in the prior art.

Utility model content

One purpose of the utility model is to provide a kind of new technical solution of low-power-consumption driving circuit.

One aspect according to the present utility model provides a kind of low-power-consumption driving circuit, comprising:

First power module, second power supply module, control module, drive module and multiple light emitting diodes；

Wherein, first power module and the control module are electrically connected with the drive module respectively；It is each described The cathode of light emitting diode is electrically connected with the drive module, anode and the second source mould of each light emitting diode Block electrical connection；

First power module is configured as providing power supply to the drive module；The second power supply module is configured To provide power supply to the multiple light emitting diode；The control module is configured as controlling the output electricity of the drive module Stream；The drive module is configured as driving the multiple light emitting diode under the control of the control module.

Optionally, the drive module is driving chip.

Optionally, there is the driving chip power pins, twin wire universal serial bus I2C pin and multiple outputs to draw Foot；

Wherein, first power module is electrically connected with the power pins of the driving chip；

The control module is electrically connected with the I2C pin of the driving chip；

The cathode of each light emitting diode is electrically connected with an output pin of the driving chip.

Optionally, the voltage of first power module is lower than the voltage of the second power supply module.

Optionally, the voltage of first power module and the voltage rating of the drive module match.

Optionally, the voltage of the second power supply module and the voltage rating of the light emitting diode match.

Optionally, the control module is microcontroller.

Optionally, further includes: be connected electrically between the second power supply module and the anode of the multiple light emitting diode Time delay module；

The time delay module is configured as controlling the electrifying timing sequence of the second power supply module.

Optionally, the time delay module is switching circuit.

Second aspect according to the present utility model, provides a kind of electronic equipment, the first party including such as the utility model The described in any item low-power-consumption driving circuits in face.

One of the utility model has technical effect that, provides lower voltage to drive module by the first power module Power supply, and powered by second power supply module to light emitting diode, it can be while keeping light-emitting diode luminance constant, drop The power consumption of low driving circuit.

By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other Feature and its advantage will become apparent.

Detailed description of the invention

The attached drawing for constituting part of specification describes the embodiments of the present invention, and uses together with the description In explanation the principles of the present invention.

Fig. 1 shows the schematic diagram of the low-power-consumption driving circuit of the utility model.

Fig. 2 shows a kind of schematic diagrames of specific embodiment of the low-power-consumption driving circuit of the utility model.

Fig. 3 shows the schematic diagram of another specific embodiment of the low-power-consumption driving circuit of the utility model.

Fig. 4 shows the circuit diagram of time delay module in the low-power-consumption driving circuit of the utility model.

Specific embodiment

The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited The scope of the utility model processed.

Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical Novel and its application or any restrictions used.

Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in appropriate situation Under, the technology and equipment should be considered as part of specification.

It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without It is as limitation.Therefore, other examples of exemplary embodiment can have different values.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.

Fig. 1 shows the schematic diagram of the low-power-consumption driving circuit of the utility model.

As shown in Figure 1, the low-power-consumption driving circuit of the utility model may include: the first power module, second source mould Block, control module, drive module and multiple light emitting diodes (LED).

Wherein, first power module and the control module are electrically connected with the drive module respectively；It is each described The cathode of LED is electrically connected with the drive module, and the anode of each LED is electrically connected with the second power supply module.

First power module is configured as providing power supply to the drive module；The second power supply module is configured To provide power supply to the multiple LED；The control module is configured as controlling the output electric current of the drive module；The drive Dynamic model block is configured as that the multiple LED is driven to shine under the control of the control module.

In one example, the power supply powered respectively to the drive module and the multiple LED provided with two kinds.That is, First power module is powered to the drive module, and the second power supply module is powered to the multiple LED.Wherein, The voltage of one power module is lower than the voltage of the second power supply module.In this way, since drive module is using the confession of lower voltage Electricity, LED use normal power voltage supply, can guarantee the brightness of light emitting diode while reducing the power consumption of drive module It is constant.

In another example, the voltage of first power module can be with the voltage rating phase of the drive module Match.The voltage of the second power supply module can match with the voltage rating of the LED.In this way, being supplied by dual-power module Electricity can reduce the power consumption of drive module while not influencing LED luminance.

In practical application, the drive module can be driving chip, for example, the drive module can be constant pressure type drive Dynamic chip, alternatively, the drive module can be constant current mode driving chip, alternatively, the drive module can be pulsed drive Dynamic chip.The present embodiment is not especially limited this.

In one example, as shown in Fig. 2, the driving chip is, for example, pulsed drive chip, have power supply (VCC) Pin, twin wire universal serial bus (SDL/SDA) pin, multiple output (OUT1~OUTn) pins and ground connection (GND) pin.Institute Stating control module is microcontroller.

Wherein, first power module is electrically connected with the VCC pin of the driving chip.The microcontroller with it is described The SDL/SDA pin of driving chip is electrically connected.The cathode of each LED and an OUT pin of the driving chip are electrically connected It connects.GND pin ground connection.

In this example, the voltage of the first power module meets the voltage rating of the driving chip, for passing through VCC pin For driving chip power supply.The microcontroller is communicated by SDL/SDA pin with the driving chip, and the driving is controlled The pulse of chip interior.The driving chip controls the on-off of corresponding OUT1~OUTn pin according to the PWM, is driven with realizing Move shining for corresponding LED.The voltage of second power supply module meets the voltage rating of the multiple LED, for mentioning for the LED Voltage supplied.

Further, driving chip caused by the voltage perfusion to the driving chip in order to avoid second power supply module is different It often, can also include being connected electrically in the second power supply module as shown in figure 3, in the low-power-consumption driving circuit of the present embodiment Time delay module between the anode of the multiple LED.The time delay module is configured as controlling the second power supply module Electrifying timing sequence.

In one example, as shown in figure 4, the time delay module can be switching circuit, pass through enabled (EN) switch electricity Realize the control to the electrifying timing sequence of the second power supply module in road.

Specifically, the voltage of the first power module meets the voltage rating of the driving chip, for being the driving core Piece power supply.The voltage of second power supply module meets the voltage rating of the multiple LED, for powering for the LED.It is powering on When, the electrifying timing sequence of the second power supply module is controlled by time delay module, makes the second power supply module in first electricity Source module powers on again after powering on, to prevent the voltage perfusion of second power supply module from causing the driving core to the driving chip The driving of piece is abnormal.

After the power-up, the microcontroller is communicated by SDL/SDA pin with the driving chip, controls the driving core PWM inside piece.The driving chip controls the on-off of OUT1~OUTn pin according to the PWM, the multiple to drive LED。

The low-power-consumption driving circuit of the present embodiment meets the first power supply of the voltage rating demand of drive module by being arranged Module is powered to drive module, and the second power supply module for the voltage rating demand for meeting light emitting diode is arranged to light-emitting diodes Pipe power supply realizes while keeping light-emitting diode luminance constant, largely reduces the power consumption of driving circuit.

The utility model also provides a kind of electronic equipment, and setting is such as above-mentioned as described in the examples low in the electronic equipment Power consumption driving circuit.

The electronic equipment of the present embodiment is keeping light-emitting diode luminance constant by the way that low-power-consumption driving circuit is arranged Meanwhile the power consumption of driving circuit is largely reduced, to improve standby time and operating time.

Although being described in detail by some specific embodiments of the example to the utility model, this field It is to be understood by the skilled artisans that above example merely to be illustrated, rather than in order to limit the scope of the utility model.This Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments It modifies.The scope of the utility model is defined by the following claims.

Claims (10)

1. a kind of low-power-consumption driving circuit characterized by comprising

First power module, second power supply module, control module, drive module and multiple light emitting diodes；

Wherein, first power module and the control module are electrically connected with the drive module respectively；It is each described luminous The cathode of diode is electrically connected with the drive module, the anode of each light emitting diode and the second power supply module electricity Connection；

First power module is configured as providing power supply to the drive module；The second power supply module be configured as to The multiple light emitting diode provides power supply；The control module is configured as controlling the output electric current of the drive module；Institute Drive module is stated to be configured as driving the multiple lumination of light emitting diode under the control of the control module.

2. low-power-consumption driving circuit according to claim 1, which is characterized in that the drive module is driving chip.

3. low-power-consumption driving circuit according to claim 2, which is characterized in that the driving chip have power pins, Twin wire universal serial bus I2C pin and multiple output pins；

Wherein, first power module is electrically connected with the power pins of the driving chip；

The control module is electrically connected with the I2C pin of the driving chip；

The cathode of each light emitting diode is electrically connected with an output pin of the driving chip.

4. low-power-consumption driving circuit according to claim 1, which is characterized in that the voltage of first power module is lower than The voltage of the second power supply module.

5. low-power-consumption driving circuit according to claim 1, which is characterized in that the voltage of first power module and institute The voltage rating for stating drive module matches.

6. low-power-consumption driving circuit according to claim 1, which is characterized in that the voltage of the second power supply module and institute The voltage rating for stating light emitting diode matches.

7. low-power-consumption driving circuit according to claim 1, which is characterized in that the control module is microcontroller.

8. low-power-consumption driving circuit according to claim 1, which is characterized in that further include: it is connected electrically in second electricity Time delay module between source module and the anode of the multiple light emitting diode；

The time delay module is configured as controlling the electrifying timing sequence of the second power supply module.

9. low-power-consumption driving circuit according to claim 8, which is characterized in that the time delay module is switching circuit.

10. a kind of electronic equipment, which is characterized in that including low-power-consumption driving circuit as described in any one of claims 1 to 9.