UCC28250
- Prebiased Start-up
- Synchronous Rectifier Control Outputs With Programmable Delays (Including Zero Delay Support)
- Voltage Mode Control With Input Voltage Feed-Forward or Current Mode Control
- Primary or Secondary-Side Control
- 3.3-V, 1.5% Accurate Reference Output
- 1-MHz Capable Switching Frequency
- 1% Accurate Cycle-by-Cycle Overcurrent Protection with Matched Duty Cycle Outputs
- Programmable Soft-Start and Hiccup Restart Timer
- Thermally Enhanced 4-mm × 4-mm QFN-20 Package and 20-pin TSSOP Package
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.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | UCC28250 Advanced PWM Controller With Prebias Operation datasheet (Rev. D) | PDF | HTML | 2015/06/28 |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| Application note | Differences Between the UCC28251 and UCC28250 and Evaluation of the UCC28251 in (Rev. A) | 2013/02/15 | ||
| EVM User's guide | Using the UCC28250EVM-564 (Rev. A) | 2011/10/07 | ||
| EVM User's guide | Using the UCC28250EVM-501 Half Bridge DC-DC Converter with Primary Side Control (Rev. B) | 2010/12/07 | ||
| Application note | Designing UCC28250 as a Secondary Side Control with a Pre-Bias Condition | 2010/11/24 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
UCC28250EVM-501 — 1차측 제어의 UCC28250 고급 PWM 컨트롤러용 평가 모듈
UCC28250EVM-564 — 2차측 제어로 프리바이어스드 부하 연산 기능이 있는 UCC28250 고급 PWM 컨트롤러용 평가 모듈
UCC28250 Unencrypted PSPICE Average Model Package (Rev. A)
PMP8878 — 1/8 브릭 절연 DC/DC 텔레콤 전원 모듈 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| TSSOP (PW) | 20 | Ultra Librarian |
| VQFN (RGP) | 20 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치