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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | 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年 5月 13日 |
| Application note | Intelligent LLC SR Control Using C2000 and UCD7138 (Rev. A) | PDF | HTML | 2022年 6月 27日 | |
| Technical article | Power Tips: How GaN devices boost resonant converter efficiency | PDF | HTML | 2016年 8月 25日 | |
| Application note | Using UCD7138 and UCD3138A for Advanced Synchronous Rectification Control (Rev. B) | 2015年 10月 23日 | ||
| Technical article | Is your power supply smart enough to be cool | PDF | HTML | 2015年 5月 21日 |
設計與開發
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UCD3138ALLCEVM150 — UCD3138A LLC 評估模組
The UCD3138ALLCEVM150 is an evaluation module (EVM) board, functioning as an LLC resonant half-bridge dc-dc converter and digitally controlled by control card UCD3138ACCEVM149. This EVM is used to evaluate digital power control using UCD3138A in LLC resonant half-bridge dc-dc conversion (...)
PMP23340C2K — 使用 C2000™ MCU 的 48V 至 12V GaN 型 1.1kW 1/8 磚型電源模組參考設計
PMP23340UCD — 使用數位電源隔離控制器的 48V 至 12V GaN 型 1.1kW 1/8 磚型電源模組參考設計
TIDM-1001 — 使用 C2000™ MCU 的雙相交錯式 LLC 諧振轉換器參考設計
此設計實作數位控制 500W 雙相交錯式 LLC 諧振轉換器。系統由單個 C2000™ 微控制器 (MCU) TMS320F280025C 控制，此微控制器也可在所有操作模式下為所有電力電子切換裝置產生 PWM 波形。此設計採用創新的電流共享技術，可準確實現相位間的電流平衡。
附註： ControlSUITE 中提供使用 F2837x 裝置的此設計的較舊版本。
TIDA-00512 — 340W 數位控制 LLC 諧振半橋 DC/DC 電源轉換參考設計
| 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
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。