C-002. DC-DC Boost Converter Vo=800V, ROHM
Io=20A
Solution Simulator Schematic Information
Simulation Parameters2023. Feb
64UG119E Rev.004

Simulation Circuit

Component
nameComponent

Default

Simulation
Setting Range

Vin1

Input voltage

250VdcVo

Output voltage

800VdcIo

Output current

20Adc

fsw

Switching frequency

50kHz

Tj

Temperature

100°C

Vd1

Gate Drive voltage H18V

Vdin

Signal voltage level

5V

Component
Name

Component

Default

Q1

SiC Power Module

BSM120C12P2C201(1200V, 134A, Chopper)

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

20µH

10µH - 2mH

C1Capacitor

20µF

1µF - 1mFRo

Output Resistor{Vo/Io}Q1

L1

10k – 300kHz

IfIo

C1VoRoIin
10 – 20V

Vin1

Devices© 2022 ROHM Co., Ltd.

Simulation
Setting Range
R sink1
R source1

GD-IC1

fsw

Vd1

Vdin

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.

Simulation Waveform
ROHM Solution Simulator Schematic Information
Io, Iin (0～5ms)

Io, If, Q1-VGS, Iin （4.94ms～5.00ms）

Vin=250V Vo=800V Io=20A
fsw=50kHz Tj=100℃

2023. Feb
64UG119E Rev.004

Io(A)

Io(A)

Orange : Io(A)Orange : Io(A)(4.94～5.00ms)

If(A)Q1-VGS(V)Brown : Q1-VGS(V)

Iin(A)

Red : Iin(A)Q1-VGS(V)

Iin(A)

Green : If1(A)Red : Iin(A)© 2022 ROHM Co., Ltd.

P. 2

Efficiency, Power Dissipation 1
ROHM Solution Simulator Schematic Information
Vin : 250V～600V
10010098
Efficiency ( %)Efficiency : 100×Po/Pin

969496949090

300

300

500600300

700

400500600

700

800

900

800

900300Pd(W)200400Power Dissipation

Power Dissipation

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

9292

Q1

1000200

Q1

1000200300

400500Vin (V)© 2022 ROHM Co., Ltd.

Vin=250V Io=20A
Tj=100℃

Efficiency (%)

Efficiency (%)

98
Efficiency ( %)Vo : 400V～800V

Vo=800V Io=20A
Tj=100℃

2023. Feb
64UG119E Rev.004

600

700

300

400

500

600
Vo (V)

700

P. 3

Efficiency, Power Dissipation 2ROHM Solution Simulator Schematic Information
Tj : -25℃～125℃
100

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

2023. Feb
64UG119E Rev.004

Efficiency (%)

Efficiency ( %)98

Efficiency : 100×Po/Pin
96
94
92
90-40

Power Dissipation (W)

300

-20

0

2040

60

80

100

120

140

100120140

Power Dissipation

Pd(W)
Q1

200

100

0-40

-20020406080

Tj (℃)© 2022 ROHM Co., Ltd.

P. 4

How to change the devices

ROHM Solution Simulator Schematic Information
2023. Feb
64UG119E 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
64UG119E 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