UCC2893D
Active110-V ACTIVE CLAMP CURRENT MODE PWM CONTROLLER WITH N-CHANNEL CLAMP FET AND 0.75V CS THRESHOLD
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UCC2893D
Active110-V ACTIVE CLAMP CURRENT MODE PWM CONTROLLER WITH N-CHANNEL CLAMP FET AND 0.75V CS THRESHOLD
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Technical Specifications
Parameters and characteristics for this part
| Specification | UCC2893D |
|---|---|
| Clock Sync | True |
| Control Features | Ramp, Soft Start, On Time Control, Enable, Current Limit |
| Duty Cycle (Max) [Max] | 70 % |
| Frequency - Switching | 250 kHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive, Isolation Capable |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 16-SOIC |
| Synchronous Rectifier | False |
| Topology | Forward Converter, Flyback |
| Voltage - Supply (Vcc/Vdd) [Max] | 16 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 8.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 3.79 | |
| 10 | $ 3.41 | |||
| 40 | $ 3.22 | |||
| 120 | $ 2.79 | |||
| 280 | $ 2.65 | |||
| 520 | $ 2.38 | |||
| 1000 | $ 2.00 | |||
| 2520 | $ 1.90 | |||
| 5000 | $ 1.83 | |||
| Texas Instruments | TUBE | 1 | $ 2.86 | |
| 100 | $ 2.51 | |||
| 250 | $ 1.76 | |||
| 1000 | $ 1.42 | |||
Description
General part information
UCC2893 Series
The UCC2891/2/3/4 family of PWM controllers is designed to simplify implementation of the various active clamp/reset switching power topologies.
The UCC289x is a peak current-mode, fixedfrequency, high-performance pulse width modulator. It includes the logic and the drive capability for the auxiliary switch with a simple method of programming the critical delays for proper active clamp operation.
The UCC2891/3 includes a 110-V start-up regulator for initial start-up and to provide keep-alive power during stand-by.
Documents
Technical documentation and resources