C-004. DC-DC Boost Synchro Converter Vo=800V,
Io=20A
ROHM Solution Simulator Schematic Information
Simulation Parameters2023. Feb
64UG121E Rev.004

Simulation Circuit

Component
nameComponent

Default

Vin1

Input voltage

250VdcVo

Output voltage

800VdcIo

Output current

20Adc

fsw1

Switching frequency

50kHz

Tj

Temperature

100°C

Vd1,2+

Gate Drive voltage H

18V

10 – 20V

Vd1,2-

Gate Drive voltage L-4V-4 – 0V

Vdin

Signal voltage level

5V

Component
Name

Component

Default

Q1

SiC Power Module

Selectable

GD-IC1,2

Gate Driver

BM61S41RFV-C

R sink1,2

Resistor for sink

ESR18 1Ω

0.1 -R source1,2

Resistor for source

ESR18 2Ω

0.1 -Io

Simulation
Setting Range

VoId
Q1
L1

10k – 300kHzC1RoIin
Vin1

Devices
Simulation
Setting Range

R sink1

GD-IC1

L1

Inductor

100µH

10µH - 2mH

C1Capacitor

20µF

1µF - 1mF

Ro

Output Resistor{Vo/Io}Vd1-

R source1

Vd1+
R sink2

GD-IC2

Vd2-

fsw1

R source2

Vd2+

Vdin
© 2022 ROHM Co., Ltd.

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-004. DC-DC Boost Synchro Converter Vo=800V,
Io=20A
ROHM Solution Simulator Schematic Information
2023. Feb
64UG121E 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
Io, Iin (0～3.00ms)

Vin=250V Vo=800V
Io=20A Tj=100℃

Io(A)Io, Id, Q1-VGS, Iin （2.94ms～3.00ms）

2023. Feb
64UG121E Rev.004

Io(A)Orange : Io(A)Orange : Io(A)

Id(A)

Green : Id(A)(2.94～3.00ms)

Q1-VGS(V)Brown : High side(V)

Iin(A)
Brown : Low side(V)Red : Iin(A)

Iin(A)
Red : Iin(A)© 2022 ROHM Co., Ltd.

P. 3

Efficiency, Power Dissipation
ROHM Solution Simulator Schematic Information
Tj : -25℃～125℃

Vin=250V Io=20A
Tj=100℃

Vo : 300V～800V100100

Efficiency (%)

969492969490

300

300

400500

600

700

800

900-40300

Pd(W)

200

Q1100-20020406080100120140100120140

Power Dissipation

Pd(W)Power Dissipation
Power Dissipation (W)200Power Dissipation (W)Efficiency : 100×Po/Pin

92

90

Q1

200

100

00200
© 2022 ROHM Co., Ltd.

Efficiency (%)

98

Efficiency : 100×Po/Pin
Efficiency ( %)Efficiency ( %)98

Vin=250V
Vo=800V Io=20A

2023. Feb
64UG121E Rev.004

300

400

500
600Vo (V)

700

800

900-40-20020406080

Tj (℃)

P. 4

How to change the devices

ROHM Solution Simulator Schematic Information
2023. Feb
64UG121E 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
64UG121E 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