SLUC487 — UCC28740 Design Calculator
지원되는 제품 및 하드웨어
제품
AC/DC 및 DC/DC 컨트롤러(외장 FET)
- UCC28740 — 2차 측면 조절(SSR)을 지원하는 정전압, 정전류(CVCC) 플라이백 컨트롤러
- UCC28740-Q1 — HV 시동 및 옵토커플러 피드백이 통합된 오토모티브 초저 대기, 플라이백 컨트롤러
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.
| 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 |
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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 (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 7 | Ultra Librarian |
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