TPS54540
- High Efficiency at Light Loads with Pulse Skipping Eco-mode™
- 92-mΩ High-Side MOSFET
- 146 µA Operating
Quiescent Current and
2 µA Shutdown Current - 100 kHz to 2.5 MHz Fixed Switching Frequency
- Synchronizes to External Clock
- Low Dropout at Light Loads with Integrated BOOT Recharge FET
- Adjustable UVLO Voltage and Hysteresis
- 0.8 V 1% Internal Voltage Reference
- 8-Terminal HSOP with PowerPAD™ Package
- –40°C to 150°C TJ Operating Range
- Create a Custom Design using the TPS54540 with the WEBENCH® Power Designer
The TPS54540 is a 42 V, 5 A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 45V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The output voltage start up ramp is internally controlled to provide a controlled start up and eliminate overshoot.
A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.
The TPS54540 is available in an 8-terminal thermally enhanced HSOP PowerPAD™ package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode™ datasheet (Rev. B) | PDF | HTML | 2016. 3. 20 | |
| 애플리케이션 노트 | NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B | 2019. 4. 5 | |||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | |||
| 애플리케이션 노트 | Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) | 2013. 9. 16 | |||
| 애플리케이션 노트 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012. 10. 26 | |||
| 애플리케이션 노트 | Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator (Rev. A) | 2012. 10. 26 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
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SLVC452 — TPS54360 and TPS54361 Family Design Excel Tool
SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator
The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
PMP30224 — 스마트 증폭기를 위한 산업용 전원 공급 장치 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.