UCC24624
- 230-V VD pins rating
- 23-ns turn-off delay to support LLC operating above resonant frequency and up to 625-kHz switching frequency
- Proportional gate drive to extend the SR conduction time
- Adjustable turn-off threshold for minimum body diode conduction
- Automatic standby mode detection with 180 µA of low standby current
- Wide 4.25-V to 26-V VDD operation range with internal clamp
- Adaptive turn-on delay for better DCM ring rejection
- Two-channel interlock to prevent shoot-through
- Integrated 1.5-A source and 4-A sink capability gate driver for N-channel MOSFETs
- 8-pin SOIC package
The UCC24624 high-performance synchronous rectifier (SR) controller is dedicated for LLC resonant converters to replace the lossy diode output rectifiers with SR MOSFETs and improve the overall system efficiency.
The UCC24624 SR controller uses drain-to-source voltage sensing method to achieve on and off control of the SR MOSFET. Proportional gate drive is implemented to extend the SR conduction time, minimize the body diode conduction time. To compensate for the offset voltage caused by the SR MOSFET parasitic inductance, the UCC24624 implements an adjustable positive turn-off threshold to accommodate different SR MOSFET packages. UCC24624 has a built-in 475-ns on-time blanking and a fixed 650-ns off-time blanking to avoid SR false turn-on and turn-off. UCC24624 also integrates a two-channel interlock function that prevents the two SRs from being on at the same time. With 230-V voltage-sensing pins and 28-V ABS maximum VDD rating, it can be directly used in converters with output voltage up to 24.75 V. The internal clamp allows the controller to support 36-V output voltage easily by adding an external current limiting resistor on VDD.
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기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | UCC24624 Dual-Channel Synchronous Rectifier Controller for LLC Resonant Converters datasheet (Rev. C) | PDF | HTML | 2022/02/28 |
| Technical article | 고주파 공진 컨버터 설계 고려 사항, 2부 | PDF | HTML | 2024/03/15 | |
| Application note | Configs of Secondary Rectifier Circuit for LLC Resonant Converter Using UCC24624 | PDF | HTML | 2021/12/21 | |
| Application note | Design Considerations With Dual-Channel SR Controller UCC24624 | 2020/06/04 | ||
| Technical article | How to reduce audible noise and power consumption at standby in your AC/DC design | PDF | HTML | 2020/04/22 | |
| EVM User's guide | PFCLLCSREVM-034 User Guide | 2019/07/26 | ||
| Technical article | Three considerations for achieving high efficiency and reliability in industrial A | PDF | HTML | 2019/04/04 | |
| EVM User's guide | The UCC24624EVM-015 LLC Gate Driver Evaluation Module (Rev. A) | 2018/12/04 | ||
| Application note | Improving ZVS and efficiency in LLC converters | 2018/11/05 | ||
| Application brief | Boosting LLC Resonant Converter Efficiency by Using the UCC24624 | 2018/10/23 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
PFCLLCSREVM034 — UCC28056B, UCC256404 및 UCC24624를 지원하는 AC-절연 DC EVM
PFCLLCSREVM034 is a 168-W AC/DC supply with a transition-mode power-factor-correction front end and isolated half-bridge LLC resonant converter with synchronous rectification. This EVM accepts AC input from 90 Vrms to 264 Vrms and outputs 12-V DC with 168-W full-load output power.
UCC24624EVM — UCC24624 LLC 게이트 드라이버 평가 모듈
TIDA-010080 — 5G 텔레콤 정류기를 위한 500W, >94.5% 효율성 아날로그 제어 AC/DC 레퍼런스 디자인
TIDA-010081 — 5G 텔레콤 정류기를 위한 >95% 효율, 1kW 아날로그 제어 AC/DC 레퍼런스 설계
PMP21683 — 48V/550W 공진 컨버터 레퍼런스 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | 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