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 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | UCD7138 4-A and 6-A Single-Channel Synchronous-Rectifier Driver With Body-Diode Conduction Sensing and Reporting datasheet (Rev. B) | PDF | HTML | 2015/05/13 |
| Application note | Intelligent LLC SR Control Using C2000 and UCD7138 (Rev. A) | PDF | HTML | 2022/06/27 | |
| Technical article | Power Tips: How GaN devices boost resonant converter efficiency | PDF | HTML | 2016/08/25 | |
| EVM User's guide | Using the UCD3138ALLCEVM150 (Rev. A) | 2016/01/14 | ||
| Application note | Using UCD7138 and UCD3138A for Advanced Synchronous Rectification Control (Rev. B) | 2015/10/23 | ||
| Technical article | Is your power supply smart enough to be cool | PDF | HTML | 2015/05/21 |
설계 및 개발
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UCD3138ALLCEVM150 — UCD3138A LLC 평가 모듈
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| 패키지 | 핀 | 다운로드 |
|---|---|---|
| WSON (DRS) | 6 | 옵션 보기 |
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