TPS40040
- 2.25-V to 5.5-V Input
- Output Voltage from 0.6 V to 90% of VIN
- High-Side Drive for N-Channel FET
- Supports Pre-Biased Outputs
- Adaptive Anti-Cross Conduction Gate Drive
- 1%, 0.6-V Reference
- Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
- Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
- Hiccup Restart from Faults
- Voltage Mode Control
- Active Low Enable
- Thermal Shutdown Protection at 145°C
- 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
- APPLICATIONS
- Point of Load
- Telecommunications
- DC to DC Modules
- Set Top Boxes
PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.
The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.
One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.6-ms calibration time, the output voltage is allowed to rise for a 4-ms soft start. During operation, the selected SCP threshold voltage is compared to the upper MOSFET’s voltage drop during its ON time to determine whether there is an overload condition.
The packaging of the TPS40040/1 is unique in that the PowerPAD™ is used as an electrical ground connection as well as a thermal connection.
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 | Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller データシート (Rev. D) | 2007/12/12 | |||
| アナログ デザイン ジャーナル | Control-Mode Quick Reference Guide (Rev. B) | PDF | HTML | 2023/08/29 | |||
| セレクション・ガイド | 電源 IC セレクション・ガイド 2018 (Rev. R 翻訳版) | 英語版 (Rev.R) | 2018/09/13 | |||
| セレクション・ガイド | DC/DC Buck Controller Solutions Selection Guide | 2018/02/06 | ||||
| アプリケーション・ノート | Analysis and Design of Input Filter for DC-DC Circuit | 2017/11/27 | ||||
| EVM ユーザー ガイド (英語) | A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter | 2006/04/10 |
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。
TPS40040 TINA-TI Average Reference Design (Rev. A)
TPS40040 Unencrypted PSpice Transient Model Package (Rev. A)
TPS40040/1 Unencrypted PSpice Average Model Package (Rev. A)
SLUC263 — Type III Compensation Calculation Tool
| 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 |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
購入と品質
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