ROHM 1700V SiC- MOSFET built-in AC / DC converter (BM2SC124FP2-LBZE2) analysis plan

● Overview
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The BM2SC12xFP2-LBZ series is a sample from ROHM from May 2021. It is an
AC / DC converter SIP (System In Package) with a built-in 1700V withstand voltage SiC- MOSFET that was shipped .
This is the industry’s first IC that combines a SiC MOSFET and a control circuit optimized for auxiliary power supplies of industrial equipment into a
small surface mount package (TO263).
Since it is a surface-mounted package that can handle up to 48W output without a heat sink, it contributes to reducing the number of parts and mounting costs at the factory, and the
control circuit has low noise and high efficiency compared to the general PWM method. Since it uses a pseudo-resonance method that can operate,
it is possible to minimize the effects of noise.　

● 　Product 　features
————————————————————————————————————————————————————————————————————————– Pseudo-resonance method (low EMI) 　Normally, switching transistors are used with 600-800V MOSFETs. 　ROHM uses 　1700V transistors, probably because 1700V MOSFETs can eliminate the snubber circuit (or active clamp) on the primary side of the transformer 　. 　As a result, it has the effect of low heat generation, the mounting area is small, and the BOM cost is low.

● Analysis schedule, price
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Two types of control IC circuit analysis reports are planned.

〇 1700V SiC-MOS FET structure analysis report
　・ Package cross-section analysis, SEM-EDX analysis
　・ SiC- MOSFET cross-section analysis: Cell part, chip end part cross-section SEM observation
　・ SiC- MOSFET plane analysis: Wiring connection, layout confirmation
　・ ROHM discrete product Comparison with
report price (approximate): 500,000 yen (excluding tax)　

〇Control IC circuit analysis report
　・ Circuit analysis (partial circuit analysis) 　　See attached for
　　specific analysis points of circuit configuration of pre-driver and pre-driver power supply path 　・ Structural analysis Logic part cross-sectional analysis, high withstand voltage transistor part cross-sectional analysis

Report price (approximate): 1.1 million yen (excluding tax)　

Please check the attached materials with the above contents.

If you are interested in this report, would like to hear a detailed explanation, etc.,
please contact contact@ltec.biz or our sales staff.
Regarding this analysis, if there are only a few people who are interested, we may not carry out the analysis.