UCC28950
- Enhanced Wide Range Resonant Zero Voltage Switching (ZVS) Capability
- Direct Synchronous Rectifier (SR) Control
- Light-Load Efficiency Management Including
- Burst Mode Operation
- Discontinuous Conduction Mode (DCM), Dynamic SR On and Off Control with Programmable Threshold
- Programmable Adaptive Delay
- Average or Peak Current Mode Control With Programmable Slope Compensation and Voltage Mode Control
- Naturally Handles Pre-Biased Start Up With DCM Mode
- Closed Loop Soft Start and Enable Function
- Programmable Switching Frequency up to 1 MHz with Bi-Directional Synchronization
- (±3%) Cycle-by-Cycle Current Limit Protection With Hiccup Mode Support
- 150-µA Start-Up Current
- VDD Undervoltage Lockout
- Wide Temperature Range –40°C to +125°C
The UCC28950 enhanced phase-shifted controller builds upon Texas Instrument’s industry standard UCx895 phase-shifted controller family with enhancements that offer best in class efficiency in today’s high performance power systems. The UCC28950 implements advanced control of the full-bridge along with active control of the synchronous rectifier output stage.
The primary-side signals allow programmable delays to ensure ZVS operation over wide-load current and input voltage range, while the load current naturally tunes the secondary-side synchronous rectifiers switching delays, maximizing overall system efficiency.
The UCC28950 also offers multiple light-load management features including burst mode and dynamic SR on/off control when transitioning in and out of Discontinuous Current Mode (DCM) operation, ensuring ZVS operation is extended down to much lighter loads.
In addition, the UCC28950 includes support for current or voltage mode control. Programmable switching frequency up to 1 MHz and a wide set of protection features including cycle-by-cycle current limit, UVLO and thermal shutdown. A 90-degree phase-shifted interleaved synchronized operation can be easily arranged between two converters.
The UCC28950 is available in TSSOP-24 package.
For all available packages, see the orderable addendum at the end of the datasheet.관심 가지실만한 유사 제품
비교 대상 장치보다 업그레이드된 기능을 지원하는 드롭인 대체품
기술 자료
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
UCC27714EVM-551 — UCC27714 600W 위상 전환 풀 브리지 컨버터 평가 모듈
This 600W EVM was designed to demonstrate how the UCC28950 control IC, UCC27524A and UCC27714 gate drivers could be used in a phase shifted full bridge converter that achieves ZVS from 50 to 100% load.
UCC28950 and UCC28951 TINA-TI Startup Reference Design (Rev. A)
UCC28950 and UCC28951 TINA-TI Steady State Reference Design (Rev. A)
SLUC222 — UCC28950 Excel Design Tool
지원되는 제품 및 하드웨어
제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
하드웨어 개발
평가 보드
PMP7246 — PSFB ZTE 및 HSHB를 지원하는 36~60Vin, 350W 저속 드레인 변조 전원 컨버터 레퍼런스 디자인
PMP8606 — 300W 풀 브리지 위상 전환(FBPS) DC/DC 전원 공급 장치 레퍼런스 디자인
PMP6712 — PoE 전원 공급용(PSE) 듀얼 채널 풀 브리지 컨버터(30A에서 54V)
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
TSSOP (PW) | 24 | 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