UCC2897APWR
Active110-V ACTIVE CLAMP CURRENT MODE PWM CONTROLLER WITH P-CHANNEL CLAMP FET AND LINE OV PROTECTION
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UCC2897APWR
Active110-V ACTIVE CLAMP CURRENT MODE PWM CONTROLLER WITH P-CHANNEL CLAMP FET AND LINE OV PROTECTION
Technical Specifications
Parameters and characteristics for this part
| Specification | UCC2897APWR |
|---|---|
| Clock Sync | True |
| Control Features | Soft Start, 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] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Isolation Capable, Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 20-TSSOP |
| Package / Case [x] | 0.173 " |
| Package / Case [y] | 4.4 mm |
| Supplier Device Package | 20-TSSOP |
| Synchronous Rectifier | True |
| Topology | Forward Converter, Flyback |
| Voltage - Supply (Vcc/Vdd) [Max] | 16 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 8.5 V |
UCC2897 Series
110-V active clamp current mode PWM controller with P-channel clamp FET and line OV protection
| Part | Operating Temperature [Min] | Operating Temperature [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Supplier Device Package | Function | Number of Outputs | Package / Case | Package / Case [y] | Package / Case [x] | Duty Cycle (Max) [Max] | Clock Sync | Output Type | Mounting Type | Output Configuration | Frequency - Switching | Topology | Output Phases | Synchronous Rectifier | Control Features |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | -40 °C | 105 °C | 8.5 V | 14.5 V | 20-TSSOP | Step-Up/Step-Down | 1 | 20-TSSOP | 4.4 mm | 0.173 " | 74 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Enable On Time Control Soft Start | ||
 Texas Instruments | -40 C | 125 °C | 8.5 V | 16 V | 20-QFN (4x4) | Step-Up/Step-Down | 1 | 20-VFQFN Exposed Pad | 70 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Current Limit Enable Soft Start | ||||
 Texas Instruments | -40 °C | 105 °C | 8.5 V | 14.5 V | 20-TSSOP | Step-Up/Step-Down | 1 | 20-TSSOP | 4.4 mm | 0.173 " | 74 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Enable On Time Control Soft Start | ||
Texas Instruments | -40 °C | 105 °C | 8.5 V | 14.5 V | 20-TSSOP | Step-Up/Step-Down | 1 | 20-TSSOP | 4.4 mm | 0.173 " | 74 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Enable On Time Control Soft Start | ||
Texas Instruments | -40 C | 125 °C | 8.5 V | 16 V | 20-TSSOP | Step-Up/Step-Down | 1 | 20-TSSOP | 4.4 mm | 0.173 " | 70 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Current Limit Enable Soft Start | ||
 Texas Instruments | -40 °C | 105 °C | 8.5 V | 14.5 V | 20-QFN (4x4) | Step-Up/Step-Down | 1 | 20-WFQFN Exposed Pad | 74 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Enable On Time Control Soft Start | ||||
Texas Instruments | -40 C | 125 °C | 8.5 V | 16 V | 20-QFN (4x4) | Step-Up/Step-Down | 1 | 20-VFQFN Exposed Pad | 70 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Current Limit Enable Soft Start | ||||
Texas Instruments | -40 °C | 105 °C | 8.5 V | 14.5 V | 20-QFN (4x4) | Step-Up/Step-Down | 1 | 20-WFQFN Exposed Pad | 74 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Enable On Time Control Soft Start | ||||
Texas Instruments | -40 °C | 105 °C | 8.5 V | 14.5 V | 20-TSSOP | Step-Up/Step-Down | 1 | 20-TSSOP | 4.4 mm | 0.173 " | 74 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Enable On Time Control Soft Start | ||
Texas Instruments | -40 C | 125 °C | 8.5 V | 16 V | 20-TSSOP | Step-Up/Step-Down | 1 | 20-TSSOP | 4.4 mm | 0.173 " | 70 % | Transistor Driver | Surface Mount | Isolation Capable Positive | 250 kHz | Flyback Forward Converter | 1 | Current Limit Enable Soft Start |
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 | $ 3.72 | |
| 10 | $ 2.44 | |||
| 25 | $ 2.11 | |||
| 100 | $ 1.73 | |||
| 250 | $ 1.55 | |||
| 500 | $ 1.44 | |||
| 1000 | $ 1.35 | |||
| Digi-Reel® | 1 | $ 3.72 | ||
| 10 | $ 2.44 | |||
| 25 | $ 2.11 | |||
| 100 | $ 1.73 | |||
| 250 | $ 1.55 | |||
| 500 | $ 1.44 | |||
| 1000 | $ 1.35 | |||
| N/A | 3109 | $ 2.78 | ||
| Tape & Reel (TR) | 2000 | $ 1.27 | ||
| 4000 | $ 1.21 | |||
| 6000 | $ 1.17 | |||
| Texas Instruments | LARGE T&R | 1 | $ 2.07 | |
| 100 | $ 1.71 | |||
| 250 | $ 1.23 | |||
| 1000 | $ 0.93 | |||
Description
General part information
UCC2897 Series
The UCC2897A PWM controller simplifies implementation of the various active clamp or reset and synchronous rectifier switching power topologies.
The UCC2897A is a peak current-mode fixed-frequency high-performance pulse-width modulator. The controller includes the logic and the drive capability for the P-channel auxiliary switch along with a simple method of programming the critical delays for proper active-clamp operation.
Features include an internal programmable slope compensation circuit, precise DMAXlimit, and a synchronizable oscillator with an internal-timing capacitor. An accurate line-monitoring function also programs the ON and OFF transitions of the converter with regard to the bulk input voltage, VIN.
Documents
Technical documentation and resources