C-019. DC-DC Phase-Shift Buck ConverterROHM
Vo=12V,
Io=250A
Solution Simulator Schematic Information
Simulation Parameters2023. Feb
64UG133E Rev.004

Simulation Circuit

Component
nameComponent

Default

Simulation
Setting Range

Vin1

Input voltage

800Vdc10 – 800VVo

Output voltage

12Vdc

Io

Output current

250Adcfsw1

Switching frequency

50kHz

Tj

Temperature

100°C

Vd1-4+

Gate Drive voltage H

18V

Vdin

Signal voltage level

5V

Lp / Ls

Transformer

500µ/200n/200nH K=1.0

Q1

10k – 300kHz

IQ1D

Q3

VH Ia

Vin1

Lp / LsVL IbDefault

Q1-4

SiC MOSFET

Selectable

D1,2_1-10

SBD

Selectable

GD-IC1-4

Gate Driver

BM61S41RFV-C

L2IoVoRo

IQ4S

Simulation
Setting Range

R sink1-4

Resistor for sink

ESR18 2Ω0.1 -R source1-4

Resistor for source

ESR18 5Ω

0.1 -L1

Inductor

20µH

10µH - 2mH

L2

Inductor

10µH

1µH - 1mHRo

Output Resistor{Vo/Io}© 2022 ROHM Co., Ltd.

D2

Q4

Q2

IQ2S
Component

D1

L1

10 – 20V

DevicesComponent
Name

IQ3D

fsw1
Vdin

GD-IC1

R sink1
R source1

GD-IC3

Vd3+

Vd1+

GD-IC2

R sink2
R source2

Vd2+

R sink3
R source3

GD-IC4

R sink4
R source4

Vd4+

Note: The Loss_calc component is a utility module to support power loss calculation and does not affect the simulation
P. 1
results of circuit operation or performance.

C-019. DC-DC Phase-Shift Buck ConverterROHM
Vo=12V,
Io=250A
Solution Simulator Schematic Information
Selectable Devices

2023. Feb
64UG133E Rev.004

Selectable Devices

Component
nameComponent

Product No.

featureComponent
nameComponent

Product No.

featureQ1-8

SiC MOSFETSCT2080KE

1200V, 80mΩ, 40A

D1,2_1-10

SBDRB088T Series

10A, 30V～150V, Low IR

SCT2120AF

650V, 120mΩ, 29A

RB160VAM-40

1A, 40V, Low Vf

SCT2160KE

1200V, 160mΩ, 22A

RB218T Series

20A, 30V～150V, Low IR

SCT2280KE

1200V, 280mΩ, 14A

RB228T Series

30A, 30V～150V, Low IR

SCT2450KE

1200V, 450mΩ, 10A

RB238T Series (*)

40A, 30V～150V, Low IR

SCT2750NY

1700V, 750mΩ, 6A

RB298T100NZ

30A, 100V, Low IR

SCT2H12NZ

1700V, 1150mΩ, 3.7A

RBQ10T Series

10A, 45V～100V, Low Vf

SCT3017AL

650V, 17mΩ, 118A

RBQ20T Series

20A, 45V～100V, Low VfSCT3022AL

650V, 22mΩ, 93A

RBQ30T Series

30A, 45V～100V, Low Vf

SCT3022KL

1200V, 22mΩ, 95A

RBR10T Series

10A, 30V～60V, Low Vf

SCT3030AL

650V, 30mΩ, 70A

RBR20T Series

20A, 30V～60V, Low Vf

SCT3030KL

1200V, 30mΩ, 72A

RBR30T Series

30A, 30V～60V, Low Vf

SCT3040KL

1200V, 40mΩ, 55A

SCT3060AL

650V, 60mΩ, 39A

SCT3080AL

650V, 80mΩ, 30A

SCT3080KL

1200V, 80mΩ, 31A

SCT3105KL

1200V, 105mΩ, 24A

SCT3120AL

650V, 120mΩ, 21A

SCT3160KL (*)

1200V, 160mΩ, 17A* Default device* Default device© 2022 ROHM Co., Ltd.

Note) We have not been able to confirm operation with all combinations. Please read the disclaimer carefully.

P. 2

Simulation Waveform
ROHM Solution Simulator Schematic Information
Io, Vo (0～0.90ms)

Vin=800V Vo=12V
Io=250A Tj=100℃

Ia, Ib, VH, VL （820µs～900µs）
Ia(A)

Io(A)

2023. Feb
64UG133E Rev.004

Green : IQ1D(A)Orange : Io(A)Purple : IQ2S(A)VH(V)

Red: VH(V)

Vo(V)

VL(V)

Red : Vo(V)

Brown : VL(V)

Ib(A)

Green : IQ3D(A)Purple : IQ4S(A)© 2022 ROHM Co., Ltd.

P. 3

Efficiency, Power Dissipation
ROHM Solution Simulator Schematic Information
Vin=800V Vo=12V
Tj=100℃

Po : 360W～840W
100

100

Efficiency (%)

Efficiency ( %)Efficiency ( %)96

Efficiency : 100×Po/Pin
94

96

Efficiency : 100×Po/Pin
94

90

90
300

400

Pd(W)

500

600

700

800

900

20

Power Dissipation

15

D1,D2

10-40

1000

Power Dissipation (W)200Power Dissipation (W)Efficiency (%)

92

92

Q1,Q2

515200

300

400

500

600
Po(W)

700

800

900

1000

020406080100120

14020406080100120140

D1,D2105Q1,Q2
Q3,Q4

00-20Pd(W)Q3,Q4© 2022 ROHM Co., Ltd.

2023. Feb
64UG133E Rev.004

9898

20

Vin=800V Vo=12V
Io=50A

Tj : -25℃～125℃-40-200Tj(℃)

P. 4

How to change the devices

ROHM Solution Simulator Schematic Information
2023. Feb
64UG133E Rev.004

Right-click on the device© 2022 ROHM Co., Ltd.

Select Properties

Pull down “SpiceLib Part”

Select the productP. 5

Loss Calculation Model

ROHM Solution Simulator Schematic Information

Loss Calculation Model outputs the instantaneous value of power loss and its integration.

Loss calculation model ‘Loss_calc’

2023. Feb
64UG133E Rev.004

Waveform example

Vds of MOSFET

Id of MOSFET

Vgs of MOSFET

𝑙𝑜𝑠𝑠_𝑜𝑢𝑡 𝑡 = 𝐼 𝑡 × 𝑉 𝑡𝑡

loss_out

𝑙𝑜𝑠𝑠_𝑖𝑛𝑡𝑒𝑔_𝑜𝑢𝑡 = න 𝑙𝑜𝑠𝑠_𝑜𝑢𝑡 𝑡 𝑑𝑡
0

loss_integ_out

I : Current through p1 to p1s
V : Voltage between p1s and p2© 2022 ROHM Co., Ltd.

P. 6

NoticeNotes
1) The information contained herein is subject to change without notice.
2) Before you use our Products, please contact our sales representative and verify the latest specifications :3) Although ROHM is continuously working to improve product reliability and quality, semiconductors can break down and malfunction due to various factors.
Therefore, in order to prevent personal injury or fire arising from failure, please take safetymeasures such as complying with the derating characteristics, implementing redundant andfire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have noresponsibility for any damages arising out of the use of our Poducts beyond the rating specified byROHM.
4) Examples of application circuits, circuit constants and any other information contained herein areprovided only to illustrate the standard usage and operations of the Products. The peripheral
conditions must be taken into account when designing circuits for mass production.
5) The technical information specified herein is intended only to show the typical functions of andexamples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly,
any license to use or exercise intellectual property or other rights held by ROHM or any otherparties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use ofsuch technical information.
6) The Products specified in this document are not designed to be radiation tolerant.
7) For use of our Products in applications requiring a high degree of reliability (as exemplifiedbelow), please contact and consult with a ROHM representative : transportation equipment (i.e.
cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety
equipment, medical systems, servers, solar cells, and power transmission systems.
8) Do not use our Products in applications requiring extremely high reliability, such as aerospaceequipment, nuclear power control systems, and submarine repeaters.
9) ROHM shall have no responsibility for any damages or injury arising from non-compliance withthe recommended usage conditions and specifications contained herein.
10) ROHM has used reasonable care to ensure the accuracy of the information contained in thisdocument. However, ROHM does not warrants that such information is error-free, and ROHM
shall have no responsibility for any damages arising from any inaccuracy or misprint of suchinformation.
11) Please use the Products in accordance with any applicable environmental laws and regulations,such as the RoHS Directive. For more details, including RoHS compatibility, please contact aROHM sales office. ROHM shall have no responsibility for any damages or losses resulting
non-compliance with any applicable laws or regulations.
12) When providing our Products and technologies contained in this document to other countries,
you must abide by the procedures and provisions stipulated in all applicable export laws andregulations, including without limitation the US Export Administration Regulations and the Foreign
Exchange and Foreign Trade Act.
13) This document, in part or in whole, may not be reprinted or reproduced without prior consent ofROHM.

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R1102B