TPS5402
- 3.5-V to 28-V Wide Input Voltage Range
- Up to 1.7-A Maximum Continuous Output Loading Current
- Pulse Skipping Mode to Achieve High Light Load Efficiency
- High Light Load Efficiency
- Frequency Spread Spectrum to Reduce EMI
- Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor
(Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz) - Frequency Spread Spectrum to Ease EMI Issue
- Peak Current-Mode Control
- Cycle-by-CycleOver Current Protection
- External Soft Start
- Available in SOIC8 Package
The TPS5402 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 3.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.
TPS5402 also features a light load pulse skipping mode, which allows for a power loss reduction from the input power supply to the system at light loading.
The switching frequency of the converters can be set from 50 kHz to 1.1 MHz with an external resistor. Frequency spread spectrum operation is introduced for EMI reduction.
A cycle-by-cycle current limit with frequency fold back protects the IC at over loading condition.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 | |
|---|---|---|---|---|---|---|
| * | 데이터 시트 | Monolithic Non-Synchronous Step-Down Regulator With Integrated MOSFET . datasheet | 2012. 9. 12 | |||
| 애플리케이션 노트 | Lead-Acid Charger and LED Driver using TPS5402 (Rev. A) | 2013. 6. 13 |
설계 및 개발
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TPS5402EVM — TPS5402 평가 모듈
The TPS5402EVM is a fully assembled and tested circuit for evaluating the TPS5402 non-synchronous step-down SWIFT™ converter. The EVM converts a 3.5-V to 28-V input voltage to a regulated 3.3-V output voltage that delivers up to 1.7 A. The TPS5402EVM is designed with an external fixed (...)
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The PMP4408 is a universal AC input, 120W flyback converter reference design. The LM5023 Quasi Resonant Flyback converter was chosen to get 2 high-efficiency isolated outputs. Additionally a downstream Buck converter, the TPS5402 enables 2 high-efficiency non-isolated outputs. The QR Flyback design (...)
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.