TPS54040
- 3.5-V to 42-V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a Pulse
Skipping Eco-Mode™ - 116-µA Operating Quiescent Current
- 1.3-µA Shutdown Current
- 100-kHz to 2.5-MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start/Sequencing
- UV and OV Power Good Output
- Adjustable UVLO Voltage and Hysteresis
- 0.8-V Internal Voltage Reference
- MSOP10 Package With PowerPAD™
- Supported by SwitcherPro Software Tool
(http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
The TPS54040 device is a 42-V, 0.5-A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated output supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.
Under voltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.
The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | TPS54040 0.5-A, 42-V Step Down DC/DC Converter with Eco-Mode™ データシート (Rev. B) | PDF | HTML | 2016/01/15 | ||
| アプリケーション・ノート | Understanding Eco-mode(TM) Operation | 2016/12/05 | ||||
| アプリケーション・ノート | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015/03/05 | ||||
| アプリケーション・ノート | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013/04/17 | ||||
| アプリケーション・ノート | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012/10/26 | ||||
| アプリケーション・ノート | Level Shifting Control for an Inverting Buck-boost | 2012/10/10 | ||||
| ホワイト・ペーパー | Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) | 2012/03/28 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
TPS54040EVM-456 — TPS54040、42V 入力、5V 出力、0.5A 評価モジュール
SLVC432 — TPS54x40 and TPS54x60 Buck Design Spreadsheet
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 (...)
SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download
The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.
This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
購入と品質
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。