KR-20260065319-A - BIPOLARITY POWER APPARATUS FOR GATE DRIVER OF INTEGRATED CHARGING CONTROL UNIT

Abstract

The present invention relates to a bipolar power supply for a gate driver of an integrated charging control unit (ICCU) using a small number of switches and transformers in an electric vehicle, and is characterized by comprising: a primary side circuit (110) of a converter including a first switch (M1) that receives DC power; a secondary side circuit (120) of a converter including a first transformer (T1) in which the secondary side of the first transformer is branched into five windings; and a secondary side circuit (130) of a converter including a second transformer (T2) in which the secondary side of the second transformer is branched into five windings.

Inventors

• 강래원

Assignees

• 영화테크(주)

Dates

Publication Date

20260508

Application Date

20241101

Claims (10)

1. In a bipolar power supply for a gate driver of an integrated charging control unit (ICCU) using a small number of switches and transformers in an electric vehicle, A primary circuit (110) of a converter including a first switch (M1) that receives DC power; A secondary circuit (120) of a converter including a first transformer (T1), wherein the secondary side of the first transformer is branched into five windings; and A bipolar power supply for a gate driver of an integrated charging control device, characterized by being configured to include a second transformer (T2) and a secondary circuit (130) of a converter in which the secondary side of the second transformer is branched into five windings.
2. In paragraph 1, The bipolar power supply for the gate driver of the above integrated charge control unit (ICCU) is, A bipolar power supply for a gate driver of an integrated charging control device, characterized by further comprising a clamp (140) installed on the primary side (110) of the converter and connected between the input power (+) terminal and the drain terminal of the first switch (M1).
3. In paragraph 1, The output of the secondary circuit (120) of the converter including the first transformer (T1) can be used as the gate driver power supply for the interleaved totem-pole power factor correction (PFC) of the on-board charger (OBC) and the DC/DC converter, and A bipolar power supply for a gate driver of an integrated charging control device, characterized in that the output of the secondary circuit (130) including the second transformer (T2) can be used as a gate driver power supply for the DC/DC converter of the OBC (On Board Charger) and LDC (Low DC-DC Converter).
4. In paragraph 1, The above power supply is, A bipolar power supply for a gate driver of an integrated charge control device characterized by the use of a flyback converter.
5. In paragraph 1, The bipolar power supply for the gate driver of the above-mentioned integrated charge control device is, A bipolar power supply for a gate driver of an integrated charge control device, characterized by being configured to include a rectifier circuit.
6. In paragraph 1, The bipolar power supply for the gate driver of the above-mentioned integrated charge control device is, A bipolar power supply for a gate driver of an integrated charge control device, characterized by being configured to include a Low Drop Out (LDO) for stable power supply.
7. In paragraph 1, The bipolar power supply for the gate driver of the above-mentioned integrated charge control device is, A bipolar power supply for a gate driver of an integrated charge control device, characterized by being configured to include a Zener diode.
8. In a bipolar power supply for a gate driver of an integrated charging control unit (ICCU) using a small number of switches and transformers in an electric vehicle, A primary side circuit (110) of a converter including a first switch (M1) that receives DC power; A secondary side circuit (120) of a first transformer comprising a first transformer (T1), a rectifier circuit (122) composed of a diode and a capacitor connected to each of the five secondary side windings of the first transformer (T1), an LDO (Low Drop Out, 150) connected to each of the rectifier circuits (122), a voltage smoothing circuit section (124) in which two capacitors connected to each of the LDOs are configured in series, and a Zener diode (126), which is a constant voltage diode connected to one of the capacitors of each of the voltage smoothing circuit sections (124); and A bipolar power supply for a gate driver of an integrated charging control device, characterized by being composed of a second transformer (T2), a rectifier circuit (132) consisting of a diode and a capacitor connected to each of the five secondary windings of the second transformer (T2), an LDO (Low Drop Out, 150-1) connected to each of the rectifier circuits (132), a voltage smoothing circuit section (134) in which two capacitors connected to each of the LDOs are configured in series, and a secondary circuit (130) of the second transformer comprising a Zener diode (136) which is a constant voltage diode connected to one of the capacitors of each of the voltage smoothing circuit sections (134).
9. In paragraph 8, The bipolar power supply for the gate driver of the above-mentioned integrated charge control device is, A bipolar power supply for a gate driver of an integrated charging control device, characterized by further comprising a clamp (140) installed on the primary side (110) of the converter and connected between the input power (+) terminal and the drain terminal of the first switch (M1).
10. In paragraph 8, The above power supply is, A bipolar power supply for a gate driver of an integrated charge control device characterized by the use of a flyback converter.

Description

Bipolar power apparatus for gate driver of integrated charging control unit The present invention relates to a power supply for a gate driver of an integrated charging control device applied to an electric vehicle, and is capable of providing bipolar power required for driving an integrated charging system using a small number of switches and transformers. The prior art related to the present invention is disclosed in FIG. 1. FIG. 1 shows a conventional Integrated Charging Control Unit (hereinafter simply referred to as 'ICCU'), which is configured to include an Interleaved Totem-Pole Power Factor Correction, an LLC Converter, and a Phase Shift Full-Bridge Converter Topology (PSFB) for driving the ICCU. And the above ICCU includes 14 power semiconductor devices, and requires 7 power supplies with floating ground to drive the 7 switches located on the top of each converter leg. In addition, three power supplies with a common ground are required to drive the seven switches located at the bottom. And the above ICCU supplies power to the gate driver, which is connected to the gate terminal of the switch, respectively. Figure 2 shows a conventional power supply required for driving the switch of the ICCU. A conventional power supply for driving multiple switches has 10 positive (+/-) outputs, and the grounds of each output are insulated from each other. And the above power supply supplies seven isolated bipolar power supplies to the gate drivers for the upper seven of the 14 power semiconductor switches constituting the ICCU, and the ground of each power supply is separated. In addition, three isolated bipolar power supplies are supplied to the gate drivers for the remaining seven lower switches, and each converter is connected by sharing one ground. Thus, conventional power supplies require 10 isolated power supplies, and bipolar power supplies must be used to increase the switching efficiency of the SIC FET (Field Effect Transistor). Conventional ICCUs and power supply units configured as described above use bootstrap circuits, pulse transformers, etc. for power supply to existing gate drivers, but have the disadvantage of having limitations in turn-on time and difficulty in applying various switching patterns. In addition, there is a problem that in order to increase the switching efficiency of the SIC FET, a bipolar driving power supply is required, and 10 power supplies isolated from each other are required. FIG. 1 is a configuration diagram of an integrated charging control device according to the prior art, FIG. 2 is a power supply configuration diagram of an integrated charging control device according to the prior art, FIG. 3 is a configuration diagram of a bipolar power supply for a gate driver of an integrated charging control device according to the present invention. Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. As shown in FIG. 3, the bipolar power supply for a gate driver of an integrated charging control unit (ICCU) according to the present invention is configured to include a primary side circuit (110) of a converter including a first switch (M1) that receives DC power, a secondary side circuit (120) of a converter including a first transformer (T1), and a secondary side circuit (130) of a converter including a second transformer (T2). And a flyback converter is used for the power supply. The secondary side circuit (120) of the converter including the first transformer (T1) comprises the first transformer (T1), a rectifier circuit (122) composed of a diode and a capacitor connected to each of the five secondary side windings of the first transformer (T1), an LDO (Low Drop Out, 150) connected to each of the rectifier circuits (122), a voltage smoothing circuit section (124) composed of two capacitors connected to each of the LDOs in series, and a Zener diode (126), which is a constant voltage diode connected to one of the capacitors of each of the voltage smoothing circuit sections (124). And the secondary side circuit (130) of the converter including the second transformer (T2) is configured to include the second transformer (T2), a rectifier circuit (132) composed of a diode and a capacitor connected to each of the five secondary side windings of the second transformer (T2), an LDO (Low Drop Out, 150-1) connected to each of the rectifier circuits (132), a voltage smoothing circuit section (134) composed of two capacitors connected to each of the LDOs in series, and a Zener diode (136), which is a constant voltage diode connected to one of the capacitors of each of the voltage smoothing circuit sections (134). In addition, 10 output power supplies are generated, and the 10 output power supplies can be used as driving power supplies for the gate driver of the integrated charging control device. And the first switch (M1) above uses a Metal-Oxide Semiconductor Field-Effect Transistor (MOSFET) switch, the source terminal is