TPS40074
電圧フィード フォワード機能搭載、ミッドレンジ入力、同期整流降圧コントローラ
TPS40074
- Operation Over 4.5-V to 28-V Input Range
- Fixed-Frequency Voltage-Mode Controller
- Integrated Unity Gain Amplifier for Remote Output Sensing
- Predictive Gate Drive™ Generation II for Improved Efficiency
- < 1% Internal 700-mV Reference
- Input Voltage Feed Forward Control
- Prebiased Output Compatible
- Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs
- Switching Frequency Programmable to 1 MHz
- 20-Pin QFN Package
- Thermal Shutdown Protection
- Software Design Tool and EVM Available
- APPLICATIONS
- Power Modules
- Networking/Telecom
- Industrial
- Servers
Predictive Gate Drive is a trademark of Texas Instruments.
The TPS40074 is a mid voltage, wide input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user programmable functions, including; soft start, UVLO, operating frequency, voltage feed-forward and high-side FET sensed short circuit protection.
The TPS40074 incorporates MOSFET gate drivers for external N-channel high side and synchronous rectifier (SR) MOSFETs. The gate drive logic incorporates second generation predictive anti-cross conduction circuitry to prevent simultaneous high side and synchronous rectifier conduction, while minimizing to eliminating current flow in the body diode of the SR FET. The TPS40074 allows for starting into pre-biased outputs by not allowing the synchronous rectifier FET to turn on until the commanded voltage during soft start is greater than the existing pre-bias voltage.
The TPS40074 uses voltage feed-forward control techniques to provide good line regulation over a wide input voltage range, and fast response to input line transients. Voltage feed-forward also provides nearly constant power stage gain with input variation to ease loop compensation of wide input range designs. The externally programmable short circuit protection provides fault current limiting, as well as hiccup mode operation for low power dissipation in the presence of a shorted output. The TPS40074 is packaged in a 20-pin QFN package for better thermal performance at higher voltages and frequencies, as well as reduced footprint.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | Midrange Input Synchronous Buck Controller With Voltage Feed-Forward データシート (Rev. B) | 2006年 8月 21日 | |||
* | エラッタ | TPS40074 Errata | 2006年 7月 14日 | |||
ユーザー・ガイド | TPS40074 Buck Controller Evaluation Module User's Guide (Rev. A) | PDF | HTML | 2022年 1月 21日 |
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。
パッケージ | ピン数 | ダウンロード |
---|---|---|
VQFN (RHL) | 20 | オプションの表示 |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 材質成分
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点