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.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | 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 | 13 Mai 2015 |
| Application note | Intelligent LLC SR Control Using C2000 and UCD7138 (Rev. A) | PDF | HTML | 27 Jun 2022 | |
| Technical article | Power Tips: How GaN devices boost resonant converter efficiency | PDF | HTML | 25 Aug 2016 | |
| EVM User's guide | Using the UCD3138ALLCEVM150 (Rev. A) | 14 Jan 2016 | ||
| Application note | Using UCD7138 and UCD3138A for Advanced Synchronous Rectification Control (Rev. B) | 23 Okt 2015 | ||
| Technical article | Is your power supply smart enough to be cool | PDF | HTML | 21 Mai 2015 |
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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 (...)
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| WSON (DRS) | 6 | Ultra Librarian |
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