UCC28250RGPT
ActiveADVANCED HALF-BRIDGE/FULL-BRIDGE PWM CONTROLLER WITH PRE-BIAS OPERATION
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UCC28250RGPT
ActiveADVANCED HALF-BRIDGE/FULL-BRIDGE PWM CONTROLLER WITH PRE-BIAS OPERATION
Technical Specifications
Parameters and characteristics for this part
| Specification | UCC28250RGPT |
|---|---|
| Clock Sync | False |
| Control Features | Frequency Control, Soft Start, Enable, Current Limit, Ramp |
| Frequency - Switching [Max] | 1.15 MHz |
| Frequency - Switching [Min] | 85 kHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | PWM Signal |
| Package / Case | 20-VFQFN Exposed Pad |
| Supplier Device Package | 20-QFN (4x4) |
| Synchronous Rectifier | True |
| Topology | Half-Bridge, Push-Pull, Full-Bridge |
| Voltage - Supply (Vcc/Vdd) [Max] | 17 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.7 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 | $ 5.04 | |
| 10 | $ 4.53 | |||
| 25 | $ 4.28 | |||
| 100 | $ 3.71 | |||
| Digi-Reel® | 1 | $ 5.04 | ||
| 10 | $ 4.53 | |||
| 25 | $ 4.28 | |||
| 100 | $ 3.71 | |||
| Tape & Reel (TR) | 250 | $ 2.47 | ||
| 500 | $ 2.35 | |||
| Texas Instruments | SMALL T&R | 1 | $ 3.81 | |
| 100 | $ 3.33 | |||
| 250 | $ 2.34 | |||
| 1000 | $ 1.88 | |||
Description
General part information
UCC28250 Series
The UCC28250 PWM controller is designed for high power density applications that may have stringent prebiased start-up requirements. The integrated synchronous rectifier control outputs target high-efficiency and high-performance topologies such as half-bridge, full-bridge, interleaved forward, and push-pull. The UCC27200 half-bridge drivers and UCC2732X MOSFET drivers used in conjunction with the UCC28250 provide a complete power converter solution.
Externally programmable soft-start, used in conjunction with an internal prebiased start-up circuit, allows the controller to gradually reach a steady-state operating point under all output conditions. The UCC28250 can be configured for primary or secondary-side control and either voltage or current mode control can be implemented.
The oscillator operates at frequencies up to 2 MHz, and can be synchronized to an external clock. Input voltage feedforward, cycle-by-cycle current limit, and a programmable hiccup timer allow the system to stay within a safe operation range. Input voltage, output voltage and temperature protection can be implemented. Dead time between primary-side switch and secondary-side synchronous rectifiers can be independently programmed.
Documents
Technical documentation and resources