UCD7138DRST
ActiveSINGLE-CHANNEL SYNCHRONOUS RECTIFIER DRIVER WITH BODY-DIODE CONDUCTION SENSING
Deep-Dive with AI
Search across all available documentation for this part.
UCD7138DRST
ActiveSINGLE-CHANNEL SYNCHRONOUS RECTIFIER DRIVER WITH BODY-DIODE CONDUCTION SENSING
Technical Specifications
Parameters and characteristics for this part
| Specification | UCD7138DRST |
|---|---|
| Channel Type | Single |
| Current - Peak Output (Source, Sink) [custom] | 6 A |
| Current - Peak Output (Source, Sink) [custom] | 4 A |
| Driven Configuration | Low-Side |
| Gate Type | N-Channel MOSFET |
| Input Type | Inverting |
| Logic Voltage - VIL, VIH | 1.08 V, 1.93 V |
| Mounting Type | Surface Mount |
| Number of Drivers | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Rise / Fall Time (Typ) [custom] | 4 ns |
| Rise / Fall Time (Typ) [custom] | 3.5 ns |
| Supplier Device Package | 6-SON (3x3) |
| Voltage - Supply [Max] | 18 V |
| Voltage - Supply [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.60 | |
| 10 | $ 2.33 | |||
| 25 | $ 2.20 | |||
| 100 | $ 1.87 | |||
| Digi-Reel® | 1 | $ 2.60 | ||
| 10 | $ 2.33 | |||
| 25 | $ 2.20 | |||
| 100 | $ 1.87 | |||
| Tape & Reel (TR) | 250 | $ 1.76 | ||
| 500 | $ 1.54 | |||
| 1250 | $ 1.28 | |||
| 2500 | $ 1.19 | |||
| 6250 | $ 1.14 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.95 | |
| 100 | $ 1.61 | |||
| 250 | $ 1.16 | |||
| 1000 | $ 0.87 | |||
Description
General part information
UCD7138 Series
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.
Documents
Technical documentation and resources