UCC28089DR
ActivePRIMARY-SIDE PUSH-PULL OSCILLATOR WITH DEAD-TIME CONTROL
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UCC28089DR
ActivePRIMARY-SIDE PUSH-PULL OSCILLATOR WITH DEAD-TIME CONTROL
Technical Specifications
Parameters and characteristics for this part
| Specification | UCC28089DR |
|---|---|
| Clock Sync | True |
| Control Features | Frequency Control, Dead Time Control |
| Duty Cycle (Max) [Max] | 50 % |
| Frequency - Switching [Max] | 1 MHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 105 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Isolation Capable, Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 0.154 in |
| Package / Case | 8-SOIC |
| Package / Case | 3.9 mm |
| Supplier Device Package | 8-SOIC |
| Synchronous Rectifier | False |
| Topology | Push-Pull |
| Voltage - Supply (Vcc/Vdd) [Max] | 14 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 | N/A | 1736 | $ 2.55 | |
| Texas Instruments | LARGE T&R | 1 | $ 1.88 | |
| 100 | $ 1.55 | |||
| 250 | $ 1.12 | |||
| 1000 | $ 0.84 | |||
Description
General part information
UCC28089 Series
The UCC28089 is a versatile BiCMOS controller for dc-to-dc or off-line fixed-frequency switching power supplies. The UCC28089 has dual alternating output stages in dual-alternating push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop and duty cycle is limited to less than 50%.
The UCC28089 is optimized for use as the primary-side companion controller for a cascaded converter that has secondary-side control. The device incorporates dead-time programming. The synchronization output also provides dead-time information. The retry and soft-start duration scales with the oscillator clock frequency for high performance fault recovery.
The UCC28089 also provides primary side under-voltage protection (UVLO), and over-current protection. Both the soft start and retry after fault durations scale with oscillator frequency for high performance. The turn-on/off UVLO thresholds are 10.5 V/8.0 V.
Documents
Technical documentation and resources
