UCD7138
- Low-Side Gate Driver With Body-Diode
Conduction Sensing - Gate Turnoff Edge Body-Diode Conduction
Reporting - Gate Turnon Edge Delay Optimization
- Works Together With the Dead-Time
Compensation (DTC) Module in the UCD3138A
Family of Digital Power Controllers:- Automatic or Manual Dead-Time Adjustment of
Gate Turnon and Turnoff Edges - Negative Current Protection
- Automatic or Manual Dead-Time Adjustment of
- –150-mV Body-Diode Conduction Sensing
Threshold - Able to Sense Body Diode Conduction Times as
Low as 10 ns - 4-A Peak-Source and 6-A Peak-Sink Drive
Current - Fast Propagation Delays (14-ns Typical)
- Fast Rise and Fall Times (5-ns Typical)
- Up to 2-MHz Operating Frequency
- 4.5-V to 18-V Supply Range
- Rail-to-Rail Drive Capability
- VCC Undervoltage Lockout (UVLO)
- 6-Pin 3-mm × 3-mm WSON-6 Package
The UCD7138 device is a 4-A and 6-A single-channel MOSFET driver with body-diode conduction sensing and reporting and is a high performance driver that allows the Texas Instruments UCD3138A digital PWM controller to achieve advanced synchronous-rectification (SR) control. The device contains a high-speed gate driver, a body-diode conduction-sensing circuit, and a turnon delay optimization circuit. The device is suitable for high-power, high-efficiency isolated converter applications where SR dead-time optimization is desired.
The UCD7138 device offers asymmetrical rail-to-rail 4-A source and 6-A sink peak-current drive capability. The short propagation delay and fast rise and fall time allows efficient operation at high frequencies. An internal high-speed comparator with a –150-mV threshold detects the body-diode conduction and reports the information to the UCD3138A digital-power controller. The UCD7138 device is capable of sensing body-diode conduction time as low as 10 ns. The SR turnon edge is optimized by the UCD7138 device. The SR turnoff edge is optimized by the UCD3138A digital-power controller which analyzes the body-diode conduction information reported by the UCD7138 DTC pin.
The benefits of the chipset include maximizing system efficiency by minimizing body-diode conduction time, robust and fast negative-current protection, and a simple interface.
기술 자료
설계 및 개발
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패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
WSON (DRS) | 6 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치