TPS54678
- Two 12-mΩ (typical) MOSFETs for high-efficiency 6-A continuous output current
- 200-kHz to 2-MHz Switching frequency
- 0.6-V ±1% Voltage reference over temperature (–40°C to 150°C)
- Synchronizes to external clock
- Start-Up with prebiased voltage
- Power good output
- Adjustable slow start and sequencing
- Cycle-by-cycle current limit and hiccup current protection
- Adjustable input voltage UVLO
- Thermally enhanced 16-pin 3-mm × 3-mm WQFN (RTE)
- Create a custom design using the TPS54678 with the WEBENCH® Power Designer
TPS54678 device is a full-featured 6-V, 6-A, synchronous step-down current mode converter with two integrated MOSFETs.
TPS54678 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced WQFN package.
TPS54678 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.
Efficiency is maximized through the integrated 12-mΩ MOSFETs. Using the enable (EN) pin, shutdown supply current is reduced by disabling the device.
The output voltage start-up ramp is controlled by the soft-start (SS) pin that can also be configured for sequencing or tracking. Monotonic start-up is achieved with prebiased voltage. Undervoltage lockout can be increased by programming the threshold with a resistor divider on the enable pin. An open-drain power good signal indicates the output is within 93% to 105% of its nominal voltage.
Cycle-by-cycle current limit, hiccup overcurrent protection and thermal shutdown protect the device during an overcurrent condition.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TPS54678 2.95-V to 6-V Input, 6-A Synchronous Step-Down SWIFT™ Converter With Hiccup Current Limit datasheet (Rev. B) | PDF | HTML | 2019/05/06 |
| Application note | Semiconductor and IC Package Thermal Metrics (Rev. D) | PDF | HTML | 2024/03/25 | |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 2021/04/08 | ||
| Application note | Calculating Efficiency (Rev. A) | 2020/03/06 | ||
| Application note | Minimizing Output Ripple During Startup (Rev. A) | 2019/05/20 | ||
| Selection guide | SWIFT DC/DC Converters Selector Guide (Rev. G) | 2019/02/06 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| Application note | Minimizing Output Ripple During Startup | 2017/06/22 | ||
| User guide | TPS54678EVM-155 6-A, SWIFT™ Regulator Evaluation Module | 2012/06/13 | ||
| Application note | Understanding Thermal Dissipation and Design of a Heatsink | 2011/05/04 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
TPS54678EVM-155 — TPS54678 평가 모듈
TPS54678 TINA TI Steadystate Reference Design
TPS54678 Unencrypted PSpice Average Model Package (Rev. A)
TPS54678 Unencrypted PSpice Transient Model Package (Rev. A)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WQFN (RTE) | 16 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치