C-017. DC-DC Step-Up Down Converter Vo=400V,
Io=40A
ROHM Solution Simulator Schematic Information
Simulation Parameters2023. Feb
64UG132E Rev.004

Simulation Circuit

Component
nameComponent

Default

Vin1

Input voltage

200VdcVo

Output voltage

400VdcIo

Output current

40Adc

fsw1

Switching frequency

50kHz

Tj

Temperature

100°C

Vd1-4+

Gate Drive voltage H

18V

10 – 20V

Vd1-4-

Gate Drive voltage L-4V-4 – 0V

Vdin

Signal voltage level

5V

Component
Name

Component

Default

Q1,2

SiC Power Module

SelectableVo

Simulation
Setting Range

Io10 – 800V

Q1

R1

L1

Vin1

10k – 300kHz

Q2
ILC1RoDevices
Simulation
Setting Range
fsw1
Vdin

GD-IC1Gate Driver

BM61S41RFV-C

R sink1

Resistor for sink

ESR18 1Ω

0.1 -R source1

Resistor for source

ESR18 2Ω

0.1 -L1

Inductor

100µH

10µH - 2mH

C1

Capacitor

20µF

Ro

Output Resistor{Vo/Io}1µF - 1mF

R sink1

GD-IC1

Vd1-

Vd1+

R sink3

GD-IC3

Vd3-

R source3

Vd3+

R sink2

GD-IC2

Vd2-© 2022 ROHM Co., Ltd.

R source1

R source2

Vd2+

R sink4

GD-IC4Vd4-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-017. DC-DC Step-Up Down Converter Vo=400V,
Io=40A
ROHM Solution Simulator Schematic Information
2023. Feb
64UG132E Rev.004

Selectable Devices
Component
nameComponent

Product No.

featureQ1

SiC Power Module

BSM080D12P2C008 (*)

800V, 120A

BSM120D12P2C005

1200V, 120A

* 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
Vin=200 ～ 800V Vo=400V
Io=40A Tj=100℃

Io, IL (0～2.00ms)

Expansion （1.90ms～2.00ms）

2023. Feb
64UG132E Rev.004

Vin=800V
Blue : IL(A)Blue : IL(A)Orange : Io(A)(1.90～2.00ms)

Orange : Io(A)

Vin=400V

Blue : IL(A)Blue : IL(A)Orange : Io(A)Orange : Io(A)

Vin=200V© 2022 ROHM Co., Ltd.

Blue : IL(A)Blue : IL(A)Orange : Io(A)Orange : Io(A)P. 3

Efficiency, Power Dissipation 1
ROHM Solution Simulator Schematic Information

100100Efficiency (%)

9896

94

90

Efficiency (%)

Efficiency : 100×Po/Pin
9694

900400100200Pd(W)

300

400

500

600

700

800

9000400

Power Dissipation

Q1300

Power Dissipation (W)Power Dissipation (W)2023. Feb
64UG132E Rev.004

92

92

Q2200

1000

100

100

200

300

400 500
Vin (V)

600

700

800

900

200

300

400

500

600

700

800

900

700

800

900

Power Dissipation

Pd(W)

300

200

Q1100

Q200© 2022 ROHM Co., Ltd.

Vin=400V Io=40A
Tj=100℃

98

Efficiency : 100×Po/Pin
Efficiency ( %)Efficiency ( %)Vo : 200V～800V

Vo=400V Io=40A
Tj=100℃

Vin : 200V～800V0100

200300400 500
Vo (V)

600

P. 4

Efficiency, Power Dissipation 2
ROHM Solution Simulator Schematic Information

Tj : -25℃～125℃
100

Vin=200V Vo=400V
Io=40A100

Efficiency (%)

Efficiency ( %)Efficiency ( %)96

Efficiency : 100×Po/Pin
94

96

94

90

90
-200204060

80100120-40140400

Power Dissipation

Pd(W)Power Dissipation (W)-40Power Dissipation (W)Efficiency : 100×Po/Pin92

92

Q1300

Q2200

100

0-200Pd(W)20406080100120140100120140Power Dissipation

300200

Q1100

Q20-40-200204060

Tj (℃)© 2022 ROHM Co., Ltd.

2023. Feb
64UG132E Rev.004

Efficiency (%)

9898

400

Vin=800V Vo=400V
Io=40A

80

100

120140-40-20020406080

Tj (℃)

P. 5

How to change the devices

ROHM Solution Simulator Schematic Information
2023. Feb
64UG132E Rev.004

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

Select Properties

Pull down “SpiceLib Part”

Select the productP. 6

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
64UG132E 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. 7

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