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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | 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年 5月 6日 |
Application note | Semiconductor and IC Package Thermal Metrics (Rev. D) | PDF | HTML | 2024年 3月 25日 | |
Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 2021年 4月 8日 | ||
Application note | Calculating Efficiency (Rev. A) | 2020年 3月 6日 | ||
Application note | Minimizing Output Ripple During Startup (Rev. A) | 2019年 5月 20日 | ||
Selection guide | SWIFT DC/DC Converters Selector Guide (Rev. G) | 2019年 2月 6日 | ||
Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
Application note | Minimizing Output Ripple During Startup | 2017年 6月 22日 | ||
User guide | TPS54678EVM-155 6-A, SWIFT™ Regulator Evaluation Module | 2012年 6月 13日 | ||
Application note | Understanding Thermal Dissipation and Design of a Heatsink | 2011年 5月 4日 |
設計與開發
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TPS54678EVM-155 — TPS54678 評估模組
TPS54678 Unencrypted PSpice Transient Model Package (Rev. A)
PMP4481 — 3-6Vin、0.6-3.3Vo/6A Pico 模組參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WQFN (RTE) | 16 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點