計算工具
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.
技術文件
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檢視所有 7 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS54540 4.5-V to 42-V Input, 5 A, Step Down DC-DC Converter with Eco-mode™ datasheet (Rev. B) | PDF | HTML | 2016年 3月 20日 |
| Application note | NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B | 2019年 4月 5日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) | 2013年 9月 16日 | ||
| EVM User's guide | Evaluation Module for the TPS54540 Step-Down Converter | 2013年 2月 1日 | ||
| Application note | Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator (Rev. A) | 2012年 10月 26日 | ||
| Application note | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012年 10月 26日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
TPS54540EVM-558 — TPS54540 降壓 DC-DC 轉換器評估模組
The Texas Instruments TPS54540EVM-558 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54540 Step-Down Converter. The EVM operates from an 6V to 42V input (12V nominal) and provides a 3.3V output at 5A.
使用指南: PDF
模擬型號
TPS54540 Unencrypted PSpice Average Model Package (Rev. A)
SLVMA28A.ZIP (205 KB) - PSpice Model
模擬型號
TPS54540 Unencrypted PSpice Transient Model Package (Rev. A)
SLVM871A.ZIP (125 KB) - PSpice Model
計算工具
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 (...)
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
訂購與品質
內含資訊：
- 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
內含資訊：
- 晶圓廠位置
- 組裝地點