UCC28701
- < 30-mW No-Load Power for 5-Star Rating
- Primary-Side Regulation (PSR) Eliminates Opto-Coupler
- ±5% Voltage and Current Regulation
- 130-kHz Maximum Switching Frequency Enables High-Power
Density Charger Designs - Quasi-Resonant Valley-Switching Operation for Highest
Overall Efficiency - Patent-Pending Frequency-Jitter Scheme to Ease EMI
Compliance - Wide VDD Range Allows Small Bias Capacitor
- Clamped Gate-Drive Output for MOSFET
- Protection Functions: Overvoltage, Low-Line, and
Overcurrent - Programmable Cable Compensation (UCC28700 Only)
- NTC Resistor Interface (UCC28701, UCC28702 and UCC28703
Only) With Fixed Cable Compensation Options - SOT-23 Package
The UCC28700 family of flyback power supply controllers provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current. Low start-up current, dynamically controlled operating states and a tailored modulation profile support very low standby power without sacrificing start-up time or output transient response.
Control algorithms in the UCC28700 family allow operating efficiencies to meet or exceed applicable standards. The output drive 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 controllers have a maximum switching frequency of 130 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28700 allows the level of cable compensation to be programmed. The UCC28701, UCC28702, and UCC28703 devices allow remote temperature sensing using a Negative Temperature Coefficient (NTC) resistor while providing fixed cable-compensation levels.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | UCC2870x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. A) | PDF | HTML | 2014. 12. 12 | |
| 애플리케이션 노트 | Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips | PDF | HTML | 2021. 8. 31 | ||
| 애플리케이션 노트 | Minimize Standby Consumption for UCC287XX Family | 2019. 8. 1 | |||
| 애플리케이션 노트 | Selecting Electrolitic Bus Capacitor for Universal Input | 2018. 7. 17 | |||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | |||
| 애플리케이션 노트 | Troubleshooting TI PSR controllers | 2016. 10. 3 | |||
| 백서 | Control Challenges for Low Power AC/DC Converters | 2015. 10. 2 | |||
| 백서 | Control Challenges for Low Power AC/DC Converters (PPT) | 2015. 10. 2 | |||
| 애플리케이션 노트 | Is Your IGBT Gate-Driver Power Supply Optimized | 2015. 3. 12 | |||
| 애플리케이션 노트 | UCC28700 5-W USB Flyback Design Review (Rev. C) | 2014. 2. 21 | |||
| 추가 자료 | Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter | 2013. 10. 29 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
UCC28711EVM-160 — UCC28711 평가 모듈
SLUC381 — MathCAD Design Tool
SLUC408 — UCC28700 Excel 97 Design Tool
PMP12082 — 3상 AC 입력, 삼중 출력 바이어스 전원 레퍼런스 디자인
TIDA-00182 — 8출력을 지원하는 강화 절연 IGBT 게이트 드라이브 플라이백 전원 공급 장치 레퍼런스 디자인
This reference design provides reinforced isolated positive and negative voltage rails required for Insulated Gate Bipolar Transistor (IGBT) gate drivers from a single 24-volt DC input supply. Utilizing a flyback isolated control topology, this reference design provides isolation compliant to (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.