계산 툴
데이터시트
UCC28740-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: -40.C to +125.C
- Device HBM classification level 2: ±2 kV
- Device CDM classification level C4B: ±750 V
- Funcitonal Safety-Capable
- Documentation available to aid functional safety system design
- Less than 10-mW no-load power capability
- Enables ±1% voltage regulation and ±5% current regulation across line and load
- 700-V startup switch
- 100-kHz maximum switching frequency enables high-power-density charger designs
- Resonant-ring valley-switching operation for highest overall efficiency
- Frequency dithering to ease EMI compliance
- Clamped gate-drive output for MOSFET
- Overvoltage, low-line, and over current protection functions
- Create a custom design using the UCC28740-Q1 with the WEBENCH Power Designer
The UCC28740-Q1 isolated-flyback power-supply controller regulates the output using an optical coupler to provide fast transient response to large-load steps.
An internal 700-V startup switch, dynamically controlled operating states, and a tailored modulation profile support ultra-low standby power without sacrificing startup time or output transient response.
Control algorithms in the UCC28740-Q1 allow operating efficiencies to meet or exceed applicable standards. The drive output interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley-switching reduces switching losses. Modulation of switching frequency and primary current-peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.
The controller has a maximum switching frequency of 100 kHz and always maintains control of the peak-primary current in the transformer. Protection features keep primary and secondary component stresses in check. A minimum switching frequency of 170 Hz facilitates the achievement of less than 10-mW no-load power.
기술 문서
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모두 보기6 | 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | UCC28740-Q1 Ultra Low Standby, Flyback Controller for Automotive, with Integrated HV Startup and Optocoupler Feedback datasheet (Rev. C) | PDF | HTML | 2020/12/08 |
| White paper | Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters | PDF | HTML | 2023/10/11 | |
| Application brief | Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C) | PDF | HTML | 2023/02/16 | |
| Functional safety information | UCC28740-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 2020/11/11 | |
| Application note | Minimize Standby Consumption for UCC287XX Family | 2019/08/01 | ||
| Analog Design Journal | Agency requirements for stand-by power consumption w/ offline and PoL converters | 2016/01/26 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
평가 보드
UCC28740EVM-525 — UCC28740EVM-525 평가 모듈
The UCC28740EVM-525 evaluation module is a 10W off-line discontinuous mode (DCM) flyback converter that provides constant-voltage (CV) and constant-current (CC) output regulation. It uses optical coupler feedback for tight voltage regulation and improved the transient response to large load steps (...)
사용 설명서: PDF
레퍼런스 디자인
PMP41009 — 350V~1,000V DC 입력, 56W 플라이백 절연 전력 공급 장치 레퍼런스 설계
이 레퍼런스 설계는 절연 14V 및 56W 출력에 유사 공진 플라이백 토폴로지를 제공합니다. 전원 공급 장치에는 350V~1,000V DC 입력에서 전원을 공급할 수 있습니다. 이 설예에서는 캐스코드 MOSFET와 플라이백 컨트롤러 UCC28740-Q1을 사용합니다. 라인 및 부하 조정은 ±1% 이내의 정밀성으로 조정됩니다. 피크 효율은 입력 1,000V, 출력 56W에서 84.6%입니다.
Test report: PDF
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| SOIC (D) | 7 | 옵션 보기 |
주문 및 품질
포함된 정보:
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
포함된 정보:
- 팹 위치
- 조립 위치