TPS54428
- D-CAP2™ Mode Enables Fast Transient
Response - Low Output Ripple and Allows Ceramic Output
Capacitor - Wide VIN Input Voltage Range: 4.5 V to 18 V
- Output Voltage Range: 0.76 V to 7.0 V
- Highly Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications
– 70 mΩ (High Side) and 53 mΩ (Low Side) - High Efficiency, Less Than 10 µA at Shutdown
- High Initial Bandgap Reference Accuracy
- Adjustable Soft Start
- Pre-Biased Soft Start
- 650-kHz Switching Frequency (fSW)
- Cycle By Cycle Over Current Limit
- Auto-Skip Eco-mode™ for High Efficiency at Light
Load
The TPS54428 is an adaptive on-time D-CAP2™ mode synchronous buck converter.
The TPS54428 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution.
The main control loop for the TPS54428 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components.
The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads.
Eco-mode™ allows the TPS54428 to maintain high efficiency during lighter load conditions.
The TPS54428 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input.
The output voltage can be programmed between 0.76 V and 7.0 V.
The device also features an adjustable soft start time.
The TPS54428 is available in 8-pin DDA package and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.
관심 가지실만한 유사 제품
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀.
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TPS54428 4.5-V to 18-V Input, 4-A Synchronous Step-Down Converter With Eco-Mode™ datasheet (Rev. D) | PDF | HTML | 2016. 1. 20 | |
| 애플리케이션 노트 | Optimize Output Filter on D-CAP2 for Stability Improvement | 2017. 6. 13 | |||
| 애플리케이션 노트 | D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- | 2013. 1. 2 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
TPS54428EVM-052 — 자동 건너뛰기 에코 모드를 지원하는 TPS54428 동기 스텝다운 컨버터용 평가 모듈
The TPS54428EVM-052 is a fully assembled and tested circuit for evaluating the TPS54428 synchronous step-down converter. The EVM operates from a 4.5-V to 18-V input and provides a 1.05-V output up to 4 A. The main control loop of TPS54428 uses D-CAP2™ mode control, which provides a very fast (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.