UCC29950
- High Efficiency PFC and Half-Bridge Resonant LLC Combo Controller
- Continuous Conduction Mode (CCM) Boost Power Factor Correction
- Supports Self-Bias or Auxiliary (external) Bias Mode of Operation
- PFC Loops Fully Internally Compensated
- PFC Stage Design in 3 Easy Steps
(design voltage feedback, current feedback and power stage) - Fixed 100-kHz PFC Frequency with Dithering for Ease of EMI Compliance
- True Input Power Limit, Independent of Line Voltage
- Fixed LLC Frequency Operating Range of 70 kHz to 350 kHz
- Dead-Time Varied Across Load Range for LLC Half-Bridge Power Stage to Extend ZVS Range
- Three-Level LLC Over-Current Protection
- Hiccup Mode Operation for Continuous Overload and Short-Circuit Power Protection
- Low Standby Power Consumption Enabled by Active Control of High-Voltage Start-Up MOSFET and X-Cap Discharge Function
- Built In Soft-Start and Converter Sequencing to Simplify Design
- AC Line Brownout Protection, with Fail Indicator
- PFC Bus Over-Voltage and Under-Voltage Protection
- Over-Temperature Protection
- External Gate Drivers for Scalability with Power Level
- SOIC-16 Package
The UCC29950 provides all the control functionality for an AC-to-DC converter with a CCM boost Power Factor Correction (PFC) stage followed by an LLC converter stage. The controller is optimized to allow ease of use.
Proprietary CCM PFC algorithms enable the system to achieve high efficiency, smaller converter size with high power factor. The integrated LLC controller enables a high-efficiency DC-to-DC conversion stage utilizing soft switching for low EMI noise. Integration of PFC control and LLC control in a combo controller allows the control algorithms to take advantage of information from both stages.
The controller includes a control circuit for start-up using a Depletion Mode MOSFET with internal device power management that minimizes external component requirements and helps lower system implementation costs.
To further reduce the standby power an X-Cap discharge circuit is integrated. The UCC29950 implements a complete suite of system protection functions, including AC line brownout, PFC bus under voltage PFC and LLC, over current and thermal shutdown.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | UCC29950 CCM PFC and LLC Combo Controller datasheet (Rev. A) | PDF | HTML | 2015/03/20 |
Technical article | Power Tips: Centralized control makes power supply design easier | PDF | HTML | 2015/12/18 | |
EVM User's guide | Using the UCC29950EVM-631 300-W PFC/LLC Off-Line PSU Module (Rev. A) | 2015/03/11 | ||
Application note | LLC Design for UCC29950 | 2015/02/16 | ||
More literature | Designing an LLC Resonant Half-Bridge Power Converter | 2011/07/26 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
PMP11303 — 고효율 350W AC/DC 전원 공급 장치 레퍼런스 디자인
PMP30192 — 콤보 IC를 지원하는 범용 입력, 360W PFC+LLC 레퍼런스 설계
PMP11237 — 단일 계층 PCB 및 UCC29950 LLC+PFC 콤보 컨트롤러를 지원하는 전원 공급 장치 레퍼런스 디자인
TIDA-00520 — 300W PFC 플러스 공진 LLC 하프 브리지 컨트롤러 오프라인 AC/DC PSU 모듈
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
SOIC (D) | 16 | 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