ROHM Launches a MOSFET with Wide-SOA for Automotive Safety Functions
ROHM Co., Ltd., a semiconductor manufacturer, has developed the RS4P063BPHZG, a 100V MOSFET specifically engineered for automotive safety functions and protection circuits. This device is designed to achieve a Wide-SOA (Safe Operating Area) across a broad voltage range and is housed in the standard HPLF5060 (5060-size) package, a footprint already widely used in automotive applications.
The product's development is driven by the increasing demands of vehicle electrification, which necessitate automotive systems capable of supporting higher voltages and currents. Within this evolving landscape, safety functions and protection circuits are critical, as they can be exposed to momentary high-power loads during abnormal or emergency conditions. Consequently, the MOSFETs driving these circuits must be capable of withstanding a wide Safe Operating Area.
The RS4P063BPHZG addresses this critical requirement through a design that effectively suppresses secondary breakdown, a common failure mechanism that can otherwise limit a MOSFET's ability to handle high-power transients. This design approach results in approximately five times the SOA tolerance of standard equivalent-sized products, as measured under test conditions of VDS = 100V and a pulse width (PW) of 100 microseconds. This performance positions the RS4P063BPHZG as offering industry-leading Wide-SOA capabilities.
Beyond its electrical performance, ROHM has prioritized practical design benefits by retaining the standard 5060-size package. This compatibility allows engineers to evaluate the RS4P063BPHZG as a replacement part against existing board layouts, thereby reducing engineering workload and the costs typically associated with design changes. This product extends ROHM's established expertise in Wide-SOA products, previously supplied to AI server and industrial power supply markets, into the automotive sector, with plans for further expansion of its automotive Wide-SOA MOSFET portfolio.
Source Link: Press Release
Specifications
| Product | Voltage Rating | Package | SOA Improvement |
|---|---|---|---|
| RS4P063BPHZG | 100V | HPLF5060 (5060-size) | Approx. 5x the SOA tolerance of standard equivalent-sized products (VDS=100V, PW=100μs) |
Key Features
- 100V-rated MOSFET engineered specifically for use in automotive safety functions and protection circuits.
- Achieves Wide-SOA (Safe Operating Area) performance across a broad voltage range, positioned by ROHM as industry-leading.
- Housed in the standard HPLF5060 (5060-size) package, a footprint already in wide use across existing automotive component designs.
- Incorporates a design that effectively suppresses secondary breakdown, addressing a failure mode that can otherwise constrain SOA performance.
- Delivers approximately five times the SOA tolerance of standard equivalent-sized products under test conditions of VDS=100V and PW=100 microseconds.
- Simplifies replacement evaluation for engineers working against existing automotive board layouts due to its standard-size package.
- Helps reduce the engineering workload and cost typically involved in redesigning circuits to accommodate a new component.
- Builds directly on ROHM's existing track record of delivering Wide-SOA products for AI server and industrial power supply applications.
- Some of ROHM's prior Wide-SOA products have been selected as recommended components by a global cloud platform provider.
- Forms part of a broader automotive Wide-SOA MOSFET lineup that ROHM is developing, which also includes devices in HPLF8080 and TOLG packages.
- ROHM has indicated an intent to continue expanding its portfolio of automotive safety-function and protection-circuit MOSFETs.
Applications
- Airbag inflator ignition circuits
- Seat belt pretensioner drive circuits
- Pyro-fuse drive circuits for battery cutoff
- Other automotive safety functions and protection circuits exposed to short-duration high-current and high-voltage stress
Availability
The ROHM RS4P063BPHZG is an automotive single N-channel MOSFET listed on ROHM’s official product site. As the ROHM pages are currently returning an access-denied response, I’m not adding specific stock status, sampling information, production availability, or lead-time figures that I cannot verify from the source.
