DC-DC converter that bring out theperformance of SiC gate drive

Rev A
TAM-GDM-00059

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Issued on 1st Jan ‘24 Unit division HQ JapanAll Rights Reserved.

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DC-DC converter that bring out the performance of SiC gate drive
Index1) DC-DC converter that bring out the performance of SiC gate drive
1-1. When, Why, we started development gate drivers
1-2. Application
1-3. Product configuration
1-4. Features of DC-DC converter
1-5. Comparison and expansion
1-6. Product line up2) Introduction of One Tamura

Appendix) Contact person

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DC-DC converter that bring out the performance of SiC gate drive
1-1. Why ??

Circuitdesign
Technology

Transformer
TechnologyEMI/EMC
Solution
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Potting
Technology

MarketAwareness3

DC-DC converter that bring out the performance of SiC gate drive
1-1. When ??

2016

2017

2018

2019

2020

2021

2022

2023

2024
For Traction
Infrastructure

IGBT

2LG-C

2EG-C

2DD of

2PG/2QG

DC-DC convertor

2LG-C Parallel

2CG-D for IGBT
Mitsubishi (2in1)
FUJI (2in1)

FUJI (2in1)

Infineon (2in1)

Infineon (2in1)

SiC 2DM/2DUfor SiC

2CG-B + 2RB

2DD ofMitsubishi
Mitsubishi (2in1)

2EG-B(LV100(HV))

2CG-B + 2RB

DC-DC convertor
Mitsubishi
ROHM

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2CG-B for SiC

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Infineon

ROHM

Wolfspeed(LV100(HV))

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DC-DC converter that bring out the performance of SiC gate drive
1-2. Application

Motor Controller

Inverter

PVWindGENERAL-PURPOSE INVERTER

Photovoltaic Power Generation

Wind Power Generation

Robotics

Grid/SVG
Electric grid

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Welding

UPS

Welding Machine

Uninterruptible Power Supply

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EV Charger
EV StandESS
Energy Storage System5DC-DC converter that bring out the performance of SiC gate drive
1-3. Product Configuration

ProductDC/DC Converter

Gate Driver Module

Gate Driver Unit

Function

2in1 PM designated
DC/DC Converter

DC/DC Converter+ Gate drive

Gate Driver Module+ Gate resistors
Protective function

Block diagram

Gatedrive

Gatedrive

Gatedrive

DC/DCConverter

DC/DCConverter

DC/DCConverter

Gatedrive

Gatedrive

Gatedrive

Appearance
2DD series
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2CG-B/D series
6

DC-DC converter that bring out the performance of SiC gate drive
1-4. Features of DC-DC converter

Features of All-SiC Power Module

Feature① Short circuit tolerance is lower than Si
Feature② VGS(+) :On resistance does not decrease at 15V
VGS(−) :Low tolerance（Less than −5~4V）

DC-DCconverter
solves allproblems!

Feature③ High frequency operation is possible

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DC-DC converter that bring out the performance of SiC gate drive
1-4. Features of DC-DC converter
Feature① Low threshold voltage VGS (th)（1V~3V)IGBT is
6V~7V

Beware of malfunctions
from IGBTSupport with a DC-DC converter ･･･Reduction of isolation capacitance
Reduction of isolation capacitancedV/dt

9pF (TYP)

2DD(DC/DC)

No malfunction
at high dV/dt
Controller

DriverVO(+)
VO1+

DriverInoiseInoise＝Cstray X
dV/dt
SiC 1200V/300A
No malfunctions !
VGSL

VIN(+)
VIN+
Step-down
Circuit

VIN(−)
VIN-

OVP

Rd

COM1COM

Dz

VO(−)
VO1-

8pF

VGS(+)
VO2+(TYP)

OTP

Main
Control

OCP

Rd

COM
COM2DzVGS(−)VO2-

VGSH
VDS : 200V/div

VDS
dV/dt＝15KV/us
ID : 100A/div
t : 100ns/div

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ID

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9pF (TYP)
8DC-DC converter that bring out the performance of SiC gate drive
1-4. Features of DC-DC converter
Feature② VGS(+) :On resistance does not decrease at 15V
VGS(−) :Low tolerance（Less than −5~4V）

IGBT’s Gate driver cannot
be usedSupport with a DC-DC converter ･･･Constant voltage control of VGS
Input voltage：13V~28V

Output voltage（etc.）：+18V、−3V

repression

VO1+
VO(+)

VIN(+)
VIN+
Step-down
CircuitVINVIN(−)

OVP

Rd

COM1COM

Dz

VO1VO(−)−3V

VO2+
VGS(+)+18V

OTP

MainControl

OCP

Rd

COM2COM

Dz

VGS(−)
VO2-Controls the gate voltage to be constant even for input fluctuations
The gate voltage is constant even for output fluctuations(SW frequency, QG of power module)
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+18V−3VImproved SiC reliability
Low loss operation9DC-DC converter that bring out the performance of SiC gate drive
1-4. Features of DC-DC converter
Feature③ High frequency operation is possible

Drive power needs to be increased

Support with a DC-DC converter ･･･Output capacity considering SiC power module
Frequency （KHz）

220
200

ID=120A

180

1200V
120A

160

ID=604A

140
VDS=1080V

120
1200V
600A100806040Gate driver derating curve

20001SiC

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2341200V
300A
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56789IGBT

1011121314 15QG（uC）
1700V
1800A

10DC-DC converter that bring out the performance of SiC gate drive
1-5. Comparison and expansion

Advantage of Tamura DC-DC converter for SiC gate drive (2DD)Item

TAMURA

Company AAdvantages

Output power

4W

3W

〇

Input Voltage

13.5-26.4V
Wide range

5V / 12V / 24V
each of ±5%〇Isolation capacitance

9pF

10pF

〇Gatedrive
DC-DCconverter
Gatedrive

DC-DC converter
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DC-DC converter that bring out the performance of SiC gate drive
1-5. Comparison and expansion

Deployment example of DC-DC converter for SiC gate drive (2DD)

Drive circuit

Drive circuit

AC Output

Drive circuit

Drive circuit

DC Input
EV Charger(DC-AC section)

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DC-DC converter that bring out the performance of SiC gate drive
1-6. Product line up
DC-DC converter 2DD series
MODEL

Output

2DD151008C

2DD151507C

2DD180407C

2DD180206C

2DD1504xxC

Output voltage(+)

+15V

+15V

+18V+18V+15V

Output voltage(-)

-10V

-15V

-4V-2V-4V

Rated load

0.16A

0.11A

0.16A

0.16A

(0.16A)

Output power

4.0W

3.3W

3.5W

3.2W

(3.0W)

2

Number of output

Input

DC13.5~26.4V

Input voltage

Primary to secondary AC5KV / Secondary to secondary AC4KV

Withstand voltage

Insulation

Protection

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Insulation resistance

DC500V 100mΩ min

Isolation capacitance

9pF (TYP)

Over current protection

Auto recovery

Over temperature
protection

Auto recovery

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13DC-DC converter that bring out the performance of SiC gate drive
Index1) DC-DC converter that bring out the performance of SiC gate drive
1-1. When, Why, we started development gate drivers
1-2. Application
1-3. Product configuration
1-4. Features of DC-DC converter
1-5. Comparison and expansion
1-6. Product line up2) Introduction of One Tamura

Appendix) Contact person

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All Rights Reserved.

14

Introduction of One Tamura (General application)
Gate driver
Device technology

Circuit technology

Module technology
Current sensor

Ga2O3
Gate Driver Unit
Novel Crystal Technology, Inc.

Soldering technology
Electric Chemicals
Soldering material
Die attach material
TIM material

Power electronics technology
and main products

Reactor Trans Coil
Large reactor/transformer

Reflow soldering system

Automotive reactor
Reactor for PF（2 in 1）

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Passive components

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Toroidal coil

SW-Trans

15

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