C-005. DC-DC Boost Synchro Converter 2-Phase
ROHM Solution Simulator Schematic Information
Vo=500V, Io=10A
Simulation Parameters2023. Feb
64UG122E Rev.004

Simulation Circuit

Component
nameComponent

Default

Simulation
Setting Range

Vin1

Input voltage

250VdcVo

Output voltage

500VdcIo

Output current

10Adc

fsw1,2

Switching frequency

50kHz

Tj

Temperature

100°C

Vd1-4+

Gate Drive voltage H

15V

10 – 20V

Vd1-4-

Gate Drive voltage L-4V

-4 – 0V

Vdin

Signal voltage level

5V

Component

Default

Io
Q1

Id1

Q3Vo

Id3

IL110k – 300kHz

IL2L1

L2Iin
Q2

Vin1

Id2

C1Ro

Q4

DevicesComponent
Name

Simulation
Setting Range

Vdin

R sink1

GD-IC1

Q1-4

SJ-MOSFET

Selectable

GD-IC1-4

Gate Driver

BM61M41RFV-C

R sink1-4

Resistor for sink

ESR18 2Ω

0.1 -Vd1-

R source1-4

Resistor for source

ESR18 5Ω0.1 -GD-IC2

L1,2Inductor

500µH

10µH - 2mH

C1

Capacitor

10µF

1µF - 1mF

Ro

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

R sink3

GD-IC3R source1

Vd1+

Vd3-

R sink2

fsw1

Vd2-

R source3

Vd3+
R sink4

GD-IC4

R source2

Vd2+
fsw2

Vd4-

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-005. DC-DC Boost Synchro Converter 2-Phase
ROHM Solution Simulator Schematic Information
Vo=500V, Io=10A
2023. Feb
64UG122E Rev.004

Selectable Devices
Component
nameComponent

Product No.

featureQ1 – Q4

SJ-MOSFET

R6004JNX

600V, 4A

R6006JNX

600V, 6A

R6009JNX

600V, 9A

R6018JNX

600V, 18A

R6020JNX

600V, 20A

R6025JNX

600V, 25A

R6030JNZ4 (*)

600V, 30A

R6050JNZ4600V, 50A* 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 1
ROHM Solution Simulator Schematic Information
Io, Iin, IL (0～3.00ms)

Vin=250V Vo=500V
Io=10A Tj=100℃

Io, Iin, Id, IL （1.96ms～2.00ms）
Red : Iin(A)Io, Iin(A)Io, Iin(A)2023. Feb
64UG122E Rev.004

Red : Iin(A)Orange : Io(A)Orange : Io(A)(1.96～2.00ms)

Id(A)

IL(A)
Blue : IL1(A)Blue : Id1(A)Green : Id3(A)Green : IL2(A)IL(A)

Blue : IL1(A)Green : IL2(A)© 2022 ROHM Co., Ltd.

P. 3

Simulation Waveform2
ROHM Solution Simulator Schematic Information
Q1_Loss1, Pd1, Vds1, Id1

Q2_Loss2, Pd2, Vds2, Id2

Vin=200Vac Iin=7.5Aac
Vo=500Vdc Tj=100℃

Loss2(mJ)

Loss1(mJ)

Vin=200Vac Iin=7.5Aac
Vo=500Vdc Tj=100℃

2023. Feb
64UG122E Rev.004

Switching Loss(off)Loss1(mJ)Loss2(mJ)

Switching Loss(on)Conduction Loss

Pd2(W)

Vds1(V)

Vds2(V)

Id1(A)

Id2(A)

Vds1(V)

Pd1(W)© 2022 ROHM Co., Ltd.

P. 4

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

Vin=250V Io=10A
Tj=100℃

Vo : 300V～600V
100

100

Vin=250V
Vo=500V Io=10A

2023. Feb
64UG122E Rev.004

Efficiency (%)

Efficiency (%)
98

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

98
96
94

200

300

Pd(W)

400

500

600

-4070050

Power Dissipation

40

Power Dissipation (W)Power Dissipation (W)949090

Q2,Q4302010Q1,Q3-20020406080100120140160120140160

Power Dissipation

Pd(W)

40

Q2,Q4302010Q1,Q300200300

400500Vo (V)© 2022 ROHM Co., Ltd.

96929250

Efficiency : 100×Po/Pin

600

700

-40-20020406080

100

Tj (℃)

P. 5

How to change the devices

ROHM Solution Simulator Schematic Information
2023. Feb
64UG122E 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
64UG122E 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

NoticeNotes1) 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 a
ROHM 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