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.
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設計與開發
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封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WSON (DRS) | 6 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點