Electronic circuit module and vehicle including the same

Patent metadata

Field	Value
Publication number	US-10911041-B2
Application number	US-201715834576-A
Country	US
Kind code	B2
Filing date	Dec 7, 2017
Priority date	Sep 29, 2017
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

An electronic circuit module is provided. The electronic circuit module prevents damage by efficiently detecting an overcurrent in the electronic circuit module using an SiC MOSFET. The electronic circuit module includes an input unit that is configured to input a reference voltage and a switching unit that is configured to output a first voltage based on a current flow. A converter is configured to output a second voltage based on the first voltage and the reference voltage. An output unit is configured to compare a magnitude of the reference voltage with a magnitude of the second voltage to output a feedback signal when the second voltage is greater than the reference voltage.

First claim

What is claimed is:

1. An electronic circuit module, comprising:
an input unit configured to input a reference voltage;
a switching unit configured to output a first voltage based on a current flow;
a converter configured to output a second voltage based on the first voltage and the reference voltage; and
an output unit configured to compare a magnitude of the reference voltage with a magnitude of the second voltage to output a feedback signal when the second voltage is greater than the reference voltage,
wherein the convertor includes:
a comparator configured to compare a magnitude of a first division voltage obtained by dividing the first voltage by a predetermined ratio with a magnitude of a division reference voltage obtained by dividing the reference voltage by a predetermined ratio to output a third voltage; and
an adder configured to output the voltage based on the third voltage and the first division voltage.

2. The electronic circuit module of claim 1 ,
wherein the convertor is configured to output the second voltage whose ratio of a variation to a variation of the current is greater than a ratio of a variation of the first voltage to the variation of the current when the current is greater than a predetermined value.

3. The electronic circuit module of claim 1 , wherein the comparator includes a resistor and is configured to adjust a magnitude of the third voltage using the resistor.

4. The electronic circuit module of claim 1 , further comprising: a controller configured to receive the first voltage from the switching unit to adjust a time required for the second voltage to reach the reference voltage.

5. The electronic circuit module of claim 4 , wherein the input unit is configured to input a source current to the controller, and the controller includes a capacitive element and is configured to receive the source current to adjust the time required for the second voltage to reach the reference voltage based on the source current and capacitance of the capacitive element.

6. The electronic circuit module of claim 1 , wherein the switching unit includes a MOSFET configured to operate based on a magnitude of the flowing current and a diode connected to the MOSFET, wherein the switching unit is configured to output the first voltage by combining a voltage at both ends of the MOSFET with a voltage at both ends of the at least one diode.

7. The electronic circuit module of claim 1 , wherein the convertor includes a capacitive element configured to reduce noise of the second voltage.

8. An electronic circuit system, comprising:
an input unit configured to input a reference voltage;
a switching unit configured to output a first voltage based on a current;
a converter configured to output a second voltage based on the first voltage and the reference voltage; and
an output unit configured to compare a magnitude of the reference voltage with a magnitude of the second voltage to output a feedback signal when the second voltage is greater than the reference voltage,
wherein the convertor includes:
a comparator configured to compare a magnitude of a first division voltage obtained by dividing the first voltage by a predetermined ratio with a magnitude of a division reference voltage obtained by dividing the reference voltage by a predetermined ratio to output a third voltage; and
an adder configured to output the second voltage based on the third voltage and the first division voltage.

9. The electronic circuit system of claim 8 , wherein the convertor is configured to output the second voltage whose ratio of a variation to a variation of the current is greater than a ratio of a variation of the first voltage to the variation of the current when the current is greater than a predetermined value.

10. A vehicle, comprising:
an input unit configured to input a reference voltage;
a switching unit configured to output a first voltage based on a current flow;
a converter configured to output a second voltage based on the first voltage and the reference voltage; and
an output unit configured to compare a magnitude of the reference voltage with a magnitude of the second voltage to output a feedback signal when the second voltage is greater than the reference voltage,
wherein the convertor includes:
a comparator configured to compare a magnitude of a first division voltage obtained by dividing the first voltage by a predetermined ratio with a magnitude of a division reference voltage obtained by dividing the reference voltage by a predetermined ratio to output a third voltage; and
an adder configured to output the second voltage based on the third voltage and the first division voltage.

11. The vehicle of claim 10 , wherein the convertor is configured to output the second voltage whose ratio of a variation to a variation of the current is greater than a ratio of a variation of the first voltage to the variation of the current when the current is greater than a predetermined value.

12. The vehicle of claim 10 , wherein the comparator includes a resistor and is configured to adjust a magnitude of the third voltage by using the resistor.

13. The vehicle of claim 10 , further comprising: a controller configured to receive the first voltage from the switching unit to adjust a time required for the second voltage to reach the reference voltage.

14. The vehicle of claim 13 , wherein:
the input unit is configured to input a source current to the controller; and
the controller includes a capacitive element and is configured to receive the source current to adjust the time required for the second voltage to reach the reference voltage based on the source current and capacitance of the capacitive element.

15. The vehicle of claim 10 , wherein the switching unit includes a MOSFET configured to operate based on a magnitude of the current flow and a diode connected to the MOSFET, wherein the switching unit is configured to output the first voltage by combining a voltage at a first end and a second end of the MOSFET with a voltage at a first end and a second end of the diode to output the first voltage.

16. The vehicle of claim 10 , wherein the convertor includes a capacitive element configured to reduce noise of the second voltage.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Postech Acad Ind Found

Inventors

• Jang Jiwoong
• Lee Ki Jong
• Shin Sangcheol
• Jang Ki Young
• Jeong Kangho
• Nam Kwang Hee
• Kim Sung Jin

Classifications

• H03K17/08116 Primary

  in composite switches (H03K17/0812, H03K17/0814 take precedence) · CPC title

• B60R16/02

  electric {constitutive elements} · CPC title

• Y02B70/10

  Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes · CPC title

• H02M1/0054

  Transistor switching losses (periodically suspending operation of switching converter in low power mode H02M1/0035) · CPC title

• H03K2217/0027

  Measuring means of, e.g. currents through or voltages across the switch · CPC title