CN115224937A - Power supply device, control method of power supply device, and storage medium - Google Patents
Power supply device, control method of power supply device, and storage medium Download PDFInfo
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- CN115224937A CN115224937A CN202110424587.9A CN202110424587A CN115224937A CN 115224937 A CN115224937 A CN 115224937A CN 202110424587 A CN202110424587 A CN 202110424587A CN 115224937 A CN115224937 A CN 115224937A
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- 239000003990 capacitor Substances 0.000 description 38
- 238000010586 diagram Methods 0.000 description 9
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a power supply device, which comprises a power supply module part, a monitoring module part, a correction module part, a switch control module part and a main chip part. The power module is used for adjusting the first input voltage into a first output voltage and outputting the first output voltage, and adjusting the first input voltage into a second output voltage and outputting the second output voltage. When the first output voltage is abnormal, the main chip sends an instruction to the switch control module unit to switch the switch between the first output voltage receiving part of the main chip unit and the correction module unit to be on and the switch between the first output voltage receiving part of the main chip unit and the first output voltage output part of the power module unit to be off.
Description
Technical Field
The invention relates to a power supply device, a control method of the power supply device and a storage medium. The power supply device is used, for example, for supplying power to a Transmission Control Unit (TCU).
Background
The power chip of the existing transmission control unit performs conversion from 6.5V to 5V/3.3V and voltage output through PWM (Pulse Width Modulation) wave Modulation and voltage monitoring feedback.
Fig. 5 is a circuit diagram showing one example of such a conventional power supply device. The working principle of the power supply device is as follows: the power supply IC outputs high-frequency PWM waves through a VDD3PIN PIN port, controls the on and off of a MOSFET1 transistor, namely controls the duty ratio of the PWM waves, so that the input voltage of 6.5V is adjusted to 5V, then voltage division is carried out through resistors R3 and R4, and the divided voltage is fed back to a VDD3_ SEL port of the power supply IC to monitor whether the voltage of the output voltage of 5V is normal or not; the power supply IC outputs high-frequency PWM waves through a VDD4PIN PIN port, controls the on-off of a MOSFET2 transistor, namely controls the duty ratio of the PWM waves, so that the input voltage of 6.5V is regulated to 3.3V, then voltage division is carried out through resistors R5 and R6, and the divided voltage is fed back to a VDD4_ SEL port of the power supply IC to monitor whether the voltage of the output voltage of 3.3V is normal or not.
Disclosure of Invention
Technical problem to be solved by the invention
However, the resistors R3, R4, R5, and R6 of the monitoring module in fig. 5 may have unstable resistance (for example, burning or electrostatic damage) due to external factors, and when the resistance is higher or lower, the feedback to the power supply IC may be affected, which may cause an abnormality in the 5V output or the 3.3V output.
Technical solution for solving technical problem
The present invention has been made in view of the above problems, and an object of the present invention is to provide a power supply device, a control method of the power supply device, and a storage medium, which can stabilize an output even when an abnormality occurs in a 5V output or a 3.3V output of a power IC, and can ensure normal power supply to a main chip unit to operate normally, thereby enabling a vehicle to enter a safe mode.
A first aspect of the power supply device of the present invention includes: a power module unit that adjusts a first input voltage to a first output voltage and outputs the adjusted first input voltage from the first output voltage output unit, and adjusts a second input voltage to a second output voltage and outputs the adjusted second input voltage from the second output voltage output unit; a monitoring module unit connected to the power module unit, for monitoring whether or not the first output voltage output from the first output voltage output unit and the second output voltage output from the second output voltage output unit are normal, and notifying the power module unit of a result of the monitoring; a correction module unit connected to the power module unit and the monitoring module unit, the power module unit issuing a command to the correction module unit to cause the correction module unit to output a voltage having the second output voltage as an input when receiving the abnormality of the first output voltage from the monitoring module unit and to adjust the voltage to the magnitude of the first output voltage, and the power module unit issuing a command to the correction module unit to cause the correction module unit to output a voltage having the first output voltage as an input when receiving the abnormality of the second output voltage from the monitoring module unit and to adjust the voltage to the magnitude of the second output voltage; a switch control module unit connected to the power supply module unit, the correction module unit, and the main chip unit, and configured to switch a switch between the power supply module unit and the main chip unit and a switch between the correction module unit and the main chip unit in accordance with an instruction from the main chip unit; and a main chip unit that, when the first output voltage is abnormal, instructs the switching control module unit to switch the switching between the first output voltage receiving unit of the main chip unit and the correction module unit to be on and the switching between the first output voltage receiving unit of the main chip unit and the first output voltage output unit of the power module unit to be off, and when the second output voltage is abnormal, instructs the switching control module unit to switch the switching between the second output voltage receiving unit of the main chip unit and the correction module unit to be on and the switching between the second output voltage receiving unit of the main chip unit and the second output voltage output unit of the power module unit to be off.
In the second aspect of the power supply device according to the present invention, in the first aspect, it is preferable that the main chip unit instructs the switching control module unit to switch the switching between the first output voltage receiving unit of the main chip unit and the first output voltage output unit of the power module unit to be on and the switching between the first output voltage receiving unit of the main chip unit and the correction module unit to be off when the first output voltage is normal, and the main chip unit instructs the switching control module unit to switch the switching between the second output voltage receiving unit of the main chip unit and the second output voltage output unit of the power module unit to be on and the switching between the second output voltage receiving unit of the main chip unit and the correction module unit to be off when the second output voltage is normal.
A third aspect of the power feeding device according to the present invention is the first or second aspect, wherein the first input voltage is preferably 6.5V, the first output voltage is preferably 5V, and the second output voltage is preferably 3.3V.
A fourth aspect of the method for controlling a power supply apparatus according to the present invention includes the steps of: a step in which the power module section adjusts the first input voltage to a first output voltage and outputs the adjusted first input voltage from the first output voltage output section, and adjusts the first input voltage to a second output voltage and outputs the adjusted first input voltage from the second output voltage output section; a step in which a monitoring module unit monitors whether or not the first output voltage output from the first output voltage output unit and the second output voltage output from the second output voltage output unit are normal, and notifies the power module unit of the result of the monitoring; a step in which the power module unit, when receiving the abnormality of the first output voltage from the monitoring module unit, issues an instruction to a correction module unit so that the correction module unit takes the second output voltage as an input voltage and adjusts the second output voltage to the magnitude of the first output voltage for output, and when receiving the abnormality of the first output voltage, the power module unit issues an instruction to a switch control module unit so that a switch between a first output voltage receiving unit of the main chip unit and the correction module unit is turned on and a switch between the first output voltage receiving unit of the main chip unit and the first output voltage output unit of the power module unit is turned off; and a step in which the power module unit instructs the correction module unit to output the first output voltage as an input voltage and adjust the first output voltage to the magnitude of the second output voltage when receiving the abnormality of the second output voltage from the monitoring module unit, and the main chip unit instructs the switching control module unit to switch the switch between the second output voltage receiving unit of the main chip unit and the correction module unit to be on and the switch between the second output voltage receiving unit of the main chip unit and the second output voltage output unit of the power module unit to be off when receiving the abnormality of the second output voltage.
In the fourth aspect, the fifth aspect of the method for controlling a power feeding device according to the present invention preferably further includes: a step in which the main chip section issues an instruction to the switching control module section to switch the switching control module section such that the switch between the first output voltage receiving section of the main chip section and the first output voltage output section of the power module section is on and the switch between the first output voltage receiving section of the main chip section and the correction module section is off when the first output voltage is normal; and a step in which the main chip section issues an instruction to the switching control module section to switch the switching control module section to on-state of the switch between the second output voltage receiving section of the main chip section and the second output voltage output section of the power module section and off-state of the switch between the second output voltage receiving section of the main chip section and the correction module section, when the second output voltage is normal.
A sixth aspect of the method for controlling a power feeding device according to the present invention is the fourth or fifth aspect, wherein the first input voltage is 6.5V, the first output voltage is 5V, and the second output voltage is 3.3V
A storage medium according to a seventh aspect of the present invention stores a program for executing the method for controlling a power supply apparatus according to the fourth to sixth aspects.
Effects of the invention
According to the power feeding device and the control method of the power feeding device of the present invention, even when the 5V output or the 3.3V output of the power IC is abnormal, the output can be stabilized, and it is possible to ensure normal power feeding to the main chip unit to operate the main chip unit normally, thereby enabling the vehicle to enter the safe mode.
Drawings
Fig. 1 is a circuit diagram for explaining a power feeding device according to an embodiment of the present invention.
Fig. 2 is a flowchart for explaining a method of controlling a power feeding device according to an embodiment of the present invention.
Fig. 3 is a schematic block diagram for explaining a connection relationship between the respective block units of the power supply device according to the embodiment of the present invention.
Fig. 4 is a schematic block diagram showing a connection relationship between respective block units of the conventional power supply device.
Fig. 5 is a circuit diagram showing one example of a conventional power supply device.
Detailed Description
Next, preferred embodiments of a power feeding device and a method for controlling a power feeding device according to the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals.
< overall Structure of Power supply apparatus >
Fig. 1 is a circuit diagram for explaining a power feeding device according to an embodiment of the present invention.
The power supply device 10 of the present invention is provided in, for example, a Transmission Control Unit (TCU) of an automobile, and is used as a power chip of the transmission control unit. As shown in fig. 1, the power supply device 10 includes a power module unit 100, a monitoring module unit 200, a correction module unit 300, a switch control module unit 400, and a main chip unit 500; in addition, the power supply apparatus 10 further includes a first transistor MOSFET1, a second transistor MOSFET2, a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4. Although shown in fig. 1: the first transistor MOSFET1, the second transistor MOSFET2, the first resistor R1, the second resistor R2, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 are disposed outside the power module portion 100, but the power module portion 100 may be considered to include the first transistor MOSFET1, the second transistor MOSFET2, the first resistor R1, the second resistor R2, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4.
The power module unit 100 is composed of a power IC (the power IC100 is sometimes referred to by the reference numeral 100) having a VDD3 terminal, a VDD4 terminal, a VDD3_ SEL terminal, a VDD4_ SEL terminal, an Enable1 terminal, an Enable2 terminal, and a GND terminal.
The monitoring module unit 200 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6.
The correction module 300 includes an IC module 301, a feedback module 302, a first inductor L1, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, and a ninth capacitor C9. The IC module 301 has a SW terminal, a Vin1 terminal, an EN1 terminal, a Vin2 terminal, an EN2 terminal, a BSTOUT terminal, a Vout1 terminal, a BYP1 terminal, a FB1 terminal, a Vout2 terminal, a BYP2 terminal, and a FB2 terminal.
The switch control block section 400 includes a third transistor MOSFET3, a fourth transistor MOSFET4, a fifth transistor MOSFET5, and a sixth transistor MOSFET6.
The main chip unit 500 has a Vin terminal (5V), a VCC terminal (3.3V), a VSS terminal, a VDD CON3 terminal, and a VDD CON4 terminal. Further, a tenth capacitor C10 is connected between the VCC terminal and the VSS terminal.
Next, the operation of each module and the connection relationship between the modules will be described in detail.
(Power supply Module part 100)
The VDD3 terminal of the power supply IC100 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to the gate of the first transistor MOSFET 1. The drain of the first transistor MOSFET1 is connected to an input voltage of 6.5V. The source of the first transistor MOSFET1 is connected to one end of the third resistor R3 of the monitoring module section 200, one end of the first capacitor C1, one end of the second capacitor C2, the source of the third transistor MOSFET3 of the switching control module section 400, and the Vin2 terminal of the IC module 301.
The power supply IC100 outputs a high-frequency PWM wave through the VDD3 terminal, controls on/off of the first transistor MOSFET1, that is, controls a duty ratio of the PWM wave, adjusts the input voltage 6.5V to 5V, and outputs the adjusted voltage to the switching control module unit 400.
The VDD4 terminal of the power supply IC100 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to the gate of the second transistor MOSFET 2. The drain of the second transistor MOSFET2 is connected to the input voltage of 6.5V. The source of the first transistor MOSFET1 is connected to one end of the fifth resistor R5, one end of the third capacitor C3, one end of the fourth capacitor C4 of the monitoring module section 200, the source of the fifth transistor MOSFET5 of the switching control module section 400, and the Vin1 terminal of the IC module 301.
The power supply IC100 outputs a high-frequency PWM wave through the VDD4 terminal, controls on/off of the second transistor MOSFET2, that is, controls a duty ratio of the PWM wave, adjusts the input voltage 6.5V to 3.3V, and outputs the adjusted voltage to the switching control module unit 400.
The VDD3_ SEL terminal of the power supply IC100 is connected to the other end of the third resistor R3 of the monitoring module unit 200 and one end of the fourth resistor R4 of the monitoring module unit 200, and the other end of the fourth resistor R4 is connected to the GND (ground) terminal of the power supply IC 100. The VDD4_ SEL terminal of the power supply IC100 is connected to the other end of the fifth resistor R5 of the monitoring module unit 200 and one end of the sixth resistor R6 of the monitoring module unit 200, and the other end of the sixth resistor R6 is connected to the GND terminal of the power supply IC 100.
(monitoring module part 200)
The monitoring module 200 divides the voltage by the third resistor R3 and the fourth resistor R4, and feeds back the divided voltage to the VDD3_ SEL terminal of the power IC100 to monitor whether the output voltage 5V is normal. The monitoring module part 200 divides the voltage by the fifth resistor R5 and the sixth resistor R6, and feeds back the divided voltage to the VDD4_ SEL terminal of the power IC100 to monitor whether the output voltage 3.3V is normal.
(correction module 300)
In the correction module unit 300, the Vin1 terminal of the IC module 301 is connected to the source of the second transistor mosfet t2, and the Vin2 terminal of the IC module 301 is connected to the source of the first transistor mosfet t 1. The EN1 terminal of the IC module 301 is connected to the Enable1 terminal of the power IC100, and the EN2 terminal of the IC module 301 is connected to the Enable2 terminal of the power IC 100. The terminal Vout1 of the IC module 301 is connected to the source of the fourth transistor MOSFET4 of the switch control module section 400, and the terminal Vout2 of the IC module 301 is connected to the source of the sixth transistor MOSFET6 of the switch control module section 400. The FB1 terminal and the FB2 terminal of the IC module 301 are connected to the feedback module 302.
In the correction module unit 300, the first inductor L1 is connected between the SW terminal and the Vin1 terminal of the IC module 301, the fifth capacitor C5 is connected between the Vout1 terminal and the BYP1 terminal of the IC module 301, the sixth capacitor C6 is connected between the BSTOUT terminal and the BYP1 terminal of the IC module 301, and the seventh capacitor C7 is connected between the Vout2 terminal and the BYP2 terminal of the IC module 301. The eighth capacitor C8 is connected between the Vout1 terminal of the IC module 301 and the ground, and the ninth capacitor C9 is connected between the Vout2 terminal of the IC module 301 and the ground. The capacitance values of the eighth capacitor C8 and the ninth capacitor C9 are, for example, 1 μ F or more.
When the VDD3_ SEL terminal of the power IC100 monitors the output voltage 5V as a voltage abnormality, a high level signal is output from the Enable1 terminal of the power IC100 to the EN1 terminal of the IC module 301, and the IC module 301 starts operating. At this time, the IC module 301 uses a normal 3.3V voltage as an input voltage of the IC module 301, and adjusts the 3.3V voltage to a 5V voltage by the combined action of the Boost (Boost) function portion in the IC module 301, the first inductor L1, and the feedback module 302, and outputs the voltage from the Vout1 terminal.
When the VDD4_ SEL terminal of the power IC100 monitors that the output voltage is 3.3V and the voltage is abnormal, a high level signal is output from the Enable2 terminal of the power IC100 to the EN2 terminal of the IC module 301, and the IC module 301 starts to operate. At this time, the IC module 301 takes the normal 5V voltage as the input voltage of the IC module 301, and the 5V voltage is adjusted to 3.3V by the Low Dropout Regulator (LDO) function portion of the IC module 301 and the feedback module 302, and is outputted from the Vout2 terminal.
(switch control module part 400 and main chip part 500)
In the switch control block unit 400, the source of the third transistor MOSFET3 is connected to the source of the first transistor MOSFET1, the gate of the third transistor MOSFET3 is connected to the VDD CON4 terminal of the main chip unit 50, and the drain of the third transistor MOSFET3 is connected to the Vin terminal of the main chip unit 50. The source of the fourth transistor MOSFET4 is connected to the Vout1 terminal of the IC module 301, the gate of the fourth transistor MOSFET4 is connected to the VDD CON4 terminal of the main chip section 50, and the drain of the fourth transistor MOSFET4 is connected to the Vin terminal of the main chip section 50.
The source of the fifth transistor MOSFET5 is connected to the source of the second transistor MOSFET2, the gate of the fifth transistor MOSFET5 is connected to the VDD CON3 terminal of the main chip part 50, and the drain of the fifth transistor MOSFET5 is connected to the VCC terminal of the main chip part 50. The source of the sixth transistor MOSFET6 is connected to the Vout2 terminal of the IC module 301, the gate of the sixth transistor MOSFET6 is connected to the VDD CON3 terminal of the main chip section 50, and the drain of the sixth transistor MOSFET6 is connected to the VCC terminal of the main chip section 50.
When the VDD3_ SEL terminal of the power IC100 monitors that the output voltage 5V is normal, the VDD CON4 terminal of the main chip part 500 outputs a high level signal to turn on the third transistor MOSFET3 and turn off the fourth transistor MOSFET4, and at this time, the normal 5V voltage is output from the power module part 100 to the Vin terminal of the main chip part 500 through the third transistor MOSFET3 of the switch control module part 400.
When the VDD3_ SEL terminal of the power IC100 monitors the output voltage 5V and the voltage is abnormal, the VDD CON4 terminal of the main chip part 500 outputs a low level signal to turn off the third transistor MOSFET3 and turn on the fourth transistor MOSFET4, and at this time, the 5V voltage corrected by the correction module part 300 is output from the Vout1 terminal of the IC module 301 of the correction module part 300 to the Vin terminal of the main chip part 500 through the fourth transistor MOSFET4 of the switch control module part 400.
When the VDD4_ SEL terminal of the power IC100 monitors that the output voltage 3.3V is normal, the VDD CON3 terminal of the main chip part 500 outputs a high level signal to turn on the fifth transistor MOSFET5 and turn off the sixth transistor MOSFET6, and at this time, the normal 3.3V voltage is output from the power module part 100 to the VCC terminal of the main chip part 500 through the fifth transistor MOSFET5 of the switch control module part 400.
When the VDD4_ SEL terminal of the power IC100 monitors that the output voltage is 3.3V, the VDD CON3 terminal of the main chip part 500 outputs a low level signal to turn off the fifth transistor MOSFET5 and turn on the sixth transistor MOSFET6, and at this time, the Vout2 terminal of the IC module 301 of the correction module part 300 outputs the 3.3V voltage corrected by the correction module part 300 to the VCC terminal of the main chip part 500 through the sixth transistor MOSFET6 of the switch control module part 400.
Fig. 3 is a schematic block diagram for explaining a connection relationship between the respective block units of the power supply device according to the embodiment of the present invention. Fig. 4 is a schematic block diagram showing a connection relationship between respective block units of the conventional power supply device. Fig. 5 is a circuit diagram showing one example of a conventional power supply device.
The power supply apparatus 10 shown in fig. 3 according to the present invention is configured by adding a correction module unit 300 and a switching control module unit 400 to a power module unit 100', a monitoring module unit 200', and a main chip unit 500' in the conventional power supply apparatus shown in fig. 4 and 5. In the power supply device 10 of the present invention, the power module unit 100, the monitoring module unit 200, the correction module unit 300, and the switching control module unit 400 are connected to each other, and the main chip unit 500 is connected to the switching control module unit 400.
With the power supply device according to the above-described embodiment of the present invention, even when an abnormality occurs in the 5V output or the 3.3V output of the power IC100, the output can be stabilized, and normal power supply to the main chip unit 500 can be ensured to operate normally, so that the vehicle can enter the safety mode.
< description of control method of Power feeding apparatus >
Fig. 2 is a flowchart for explaining a method of controlling a power feeding device according to an embodiment of the present invention.
As shown in fig. 2, when the flow starts (step ST 101), the power module 100 adjusts the input voltage 6.5V to 3.3V/5V and outputs the adjusted voltage to the switching control module 400 (step ST 102). Then, the monitoring module part 200 divides the voltage by the third resistor R3 and the fourth resistor R4, and feeds back the divided voltage to the VDD3_ SEL terminal of the power IC100 to monitor whether the output voltage 5V is normal; and the divided voltage is fed back to the VDD4_ SEL terminal of the power IC100 through the fifth and sixth resistors R5 and R6 to monitor whether the output voltage 3.3V is normal (step ST 103).
Then, the power supply IC100 compares the divided voltage fed back to the VDD3_ SEL terminal of the power supply IC100 (i.e., the divided voltage of the output voltage 5V) with the reference voltage by the comparator, and determines that the output voltage 5V is normal if the divided voltage is the same as the reference voltage, and determines that the output voltage 5V is abnormal if the divided voltage is different from the reference voltage (step ST 104).
If it is determined in step ST104 that the output voltage 5V is normal (yes in step ST 104), the VDD CON4 terminal of the main chip unit 500 outputs a high level signal to turn on the third transistor MOSFET3 and turn off the fourth transistor MOSFET4, and at this time, the normal 5V voltage is output from the power module unit 100 to the Vin terminal of the main chip unit 500 via the third transistor MOSFET3 of the switching control module unit 400 (step ST 105). Then, the flow ends (step ST 106).
If it is determined in step ST104 that the output voltage 5V is abnormal (no in step ST 104), the VDD CON4 terminal of the main chip part 500 outputs a low level signal to turn off the third transistor MOSFET3 and turn on the fourth transistor MOSFET4 (step ST 107). At this time, the IC module 301 uses the normal 3.3V voltage as the input voltage of the IC module 301, and adjusts the 3.3V voltage to 5V voltage by the combined action of the Boost (Boost) function portion in the IC module 301, the first inductor L1, and the feedback module 302, and outputs the voltage from the Vout1 terminal (step ST 108). Then, the 5V voltage corrected by the correction module 300 is output from the Vout1 terminal of the IC module 301 of the correction module 300 to the Vin terminal of the main chip 500 via the fourth transistor MOSFET4 of the switching control module 400 (step ST 109). Then, the flow ends (step ST 110).
Further, the power supply IC100 compares the divided voltage fed back to the VDD4_ SEL terminal of the power supply IC100 (i.e., the divided voltage of the output voltage 3.3V) with the reference voltage by the comparator, and determines that the output voltage 3.3V is normal if the divided voltage is the same as the reference voltage, and determines that the output voltage 3.3V is abnormal if the divided voltage is different from the reference voltage (step ST 111).
If it is determined in step ST111 that the output voltage 3.3V is normal (yes in step ST 111), the VDD CON3 terminal of the main chip part 500 outputs a high level signal to turn on the fifth transistor MOSFET5 and turn off the sixth transistor MOSFET6, and at this time, the normal 3.3V voltage is output from the power module part 100 to the VCC terminal of the main chip part 500 via the fifth transistor MOSFET5 of the switching control module part 400 (step ST 112). Then, the flow ends (step ST 113).
When it is determined in step ST111 that the output voltage 3.3V is abnormal (no in step ST 111), the VDD CON3 terminal of the main chip part 500 outputs a low level signal to turn off the fifth transistor MOSFET5 and turn on the sixth transistor MOSFET6 (step ST 114). At this time, the IC module 301 uses the normal 5V voltage as the input voltage of the IC module 301, and the 5V voltage is adjusted to 3.3V by the Low Dropout Regulator (LDO) function part of the IC module 301 and the feedback module 302, and is output from the Vout2 terminal (step ST 115). Then, the voltage of 3.3V corrected by the correction module 300 is output from the Vout2 terminal of the IC module 301 of the correction module 300 to the VCC terminal of the main chip unit 500 via the sixth transistor MOSFET6 of the switching control module 400 (step ST 116). Then, the flow ends (step ST 117).
By adopting the control method of the power supply device according to the above-described embodiment of the present invention, even when an abnormality occurs in the 5V output or the 3.3V output of the power IC100, the output can be stabilized, and normal power supply to the main chip part 500 can be ensured to operate normally, so that the vehicle can enter the safe mode.
In addition, in the present invention, a storage medium stores a program for executing the above-described control method of the power supply apparatus. The type of the storage medium is not particularly limited, and for example, a hard disk, an optical disk such as a CD-ROM/MO/MD/DVD/CD-R, a semiconductor memory such as an IC card, a mask ROM/EPROM/EEPROM/flash ROM, or the like can be used.
As described above, the present invention has been described in detail, but the above description is merely exemplary in all aspects, and the present invention is not limited thereto. Countless variations not illustrated are to be construed that may be envisaged without departing from the scope of the invention.
Industrial applicability of the invention
The power supply device and the control method thereof can be widely applied to devices such as a power chip of a Transmission Control Unit (TCU) of an automobile.
Description of the reference symbols
10. Power supply device
100. 100' power module part
200. 200' monitoring module part
300. Correction module part
301 IC module
302. Feedback module
400. Switch control module part
500. 500' main chip part
R1 first resistor
R2 second resistance
R3 third resistance
R4 fourth resistor
R5 fifth resistor
R6 sixth resistor
C1 First capacitor
C2 Second capacitor
C3 Third capacitor
C4 Fourth capacitance
C5 Fifth capacitor
C6 Sixth capacitor
C7 Seventh capacitor
C8 Eighth capacitor
C9 Ninth capacitor
C10 The tenth capacitor
L1 first inductor
MOSFET1 first transistor
MOSFET2 second transistor
MOSFET3 third transistor
MOSFET4 fourth transistor
MOSFET5 fifth transistor
MOSFET6 sixth transistor.
Claims (7)
1. A power supply device, comprising:
a power module unit for adjusting a first input voltage to a first output voltage and outputting the adjusted first input voltage from the first output voltage output unit, and adjusting a second input voltage to a second output voltage and outputting the adjusted first input voltage from the second output voltage output unit;
a monitoring module unit connected to the power module unit, for monitoring whether the first output voltage output from the first output voltage output unit and the second output voltage output from the second output voltage output unit are normal, and notifying the power module unit of a monitoring result;
a correction module unit connected to the power module unit and the monitoring module unit, the power module unit issuing a command to the correction module unit to cause the correction module unit to output a voltage having the second output voltage as an input when receiving the abnormality of the first output voltage from the monitoring module unit and to adjust the voltage to the magnitude of the first output voltage, and the power module unit issuing a command to the correction module unit to cause the correction module unit to output a voltage having the first output voltage as an input when receiving the abnormality of the second output voltage from the monitoring module unit and to adjust the voltage to the magnitude of the second output voltage;
a switch control module unit connected to the power supply module unit, the correction module unit, and the main chip unit, and configured to switch a switch between the power supply module unit and the main chip unit and a switch between the correction module unit and the main chip unit in accordance with an instruction from the main chip unit; and
and a main chip unit that, when the first output voltage is abnormal, issues an instruction to the switch control module unit to switch the switch between the first output voltage receiving unit of the main chip unit and the correction module unit to be on and the switch between the first output voltage receiving unit of the main chip unit and the first output voltage output unit of the power module unit to be off, and when the second output voltage is abnormal, issues an instruction to the switch control module unit to switch the switch between the second output voltage receiving unit of the main chip unit and the correction module unit to be on and the switch between the second output voltage receiving unit of the main chip unit and the second output voltage output unit of the power module unit to be off.
2. The power supply device according to claim 1,
the main chip section, when the first output voltage is normal, issues an instruction to the switching control module section to switch the switching control module section such that the switch between the first output voltage receiving section of the main chip section and the first output voltage output section of the power module section is on and the switch between the first output voltage receiving section of the main chip section and the correction module section is off,
when the second output voltage is normal, the main chip unit issues an instruction to the switching control module unit to switch the switching control module unit to on state of the switch between the second output voltage receiving unit of the main chip unit and the second output voltage output unit of the power module unit and off state of the switch between the second output voltage receiving unit of the main chip unit and the correction module unit.
3. The power supply device according to claim 1 or 2,
the first input voltage is 6.5V, the first output voltage is 5V, and the second output voltage is 3.3V.
4. A control method of a power supply apparatus, comprising the steps of:
a step in which the power module adjusts the first input voltage to a first output voltage and outputs the adjusted first input voltage from the first output voltage output unit, and adjusts the first input voltage to a second output voltage and outputs the adjusted first input voltage from the second output voltage output unit;
a step in which a monitoring module unit monitors whether or not the first output voltage output from the first output voltage output unit and the second output voltage output from the second output voltage output unit are normal, and notifies the power module unit of the result of the monitoring;
a step in which the power module unit instructs a correction module unit to output the second output voltage as an input voltage and adjust the second output voltage to the first output voltage when receiving the abnormality of the first output voltage from the monitoring module unit, and the main chip unit instructs a switching control module unit to switch a switch between a first output voltage receiving unit of the main chip unit and the correction module unit to be on and a switch between the first output voltage receiving unit of the main chip unit and the first output voltage output unit of the power module unit to be off when receiving the abnormality of the first output voltage; and
and a step in which the power module unit instructs a correction module unit to output the first output voltage as an input voltage and adjust the first output voltage to the magnitude of the second output voltage when receiving the abnormality of the second output voltage from the monitoring module unit, and the main chip unit instructs a switching control module unit to switch a switch between a second output voltage receiving unit of the main chip unit and the correction module unit to be on and a switch between the second output voltage receiving unit of the main chip unit and the second output voltage output unit of the power module unit to be off when receiving the abnormality of the second output voltage.
5. The method for controlling a power supply device according to claim 4, further comprising the steps of:
a step in which the main chip section issues an instruction to the switching control module section to switch the switching control module section such that the switch between the first output voltage receiving section of the main chip section and the first output voltage output section of the power module section is on and the switch between the first output voltage receiving section of the main chip section and the correction module section is off when the first output voltage is normal; and
and a step in which the main chip section issues an instruction to the switching control module section to switch the switching control module section to a state in which the switch between the second output voltage receiving section of the main chip section and the second output voltage output section of the power module section is on and the switch between the second output voltage receiving section of the main chip section and the correction module section is off, when the second output voltage is normal.
6. The control method of a power supply device according to claim 4 or 5,
the first input voltage is 6.5V, the first output voltage is 5V, and the second output voltage is 3.3V.
7. A storage medium storing a program for executing the control method of the power supply apparatus according to any one of claims 4 to 6.
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| CN202110424587.9A CN115224937B (en) | 2021-04-20 | 2021-04-20 | Power supply device, control method for power supply device, and storage medium |
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| CN202110424587.9A CN115224937B (en) | 2021-04-20 | 2021-04-20 | Power supply device, control method for power supply device, and storage medium |
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| CN115224937B (en) | 2024-05-24 |
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