UCC28089
- Push-Pull Oscillator With Programmable Deadtime
- High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability
- Can be Used in Push-Pull, Half-Bridge, or Full-Bridge Topologies
- Oscillator Synchronization Output
- Low Start-Up Current of 130 µA and 1.4-mA Typical Run Current
- Over-Current Shutdown
- Digitally Controlled Over-Current/Retry Feature
- Undervoltage Lockout With Hysteresis
- APPLICATIONS
- High Efficiency Cascaded Converters
- Inverters
- Electronic Ballasts
- Uninterruptable Power Supplies (UPS)
- AC or DC Links
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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | Primary-Side Push-Pull Oscillator with Dead-Time Control datasheet (Rev. A) | 2006. 8. 25 | ||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 |
설계 및 개발
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
주문 및 품질
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