TPS51220
- Input Voltage Range: 4.5 V to 28 V
- Output Voltage Range: 1 V to 12 V
- Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio Skip)
- Programmable Droop Compensation
- Voltage Servo Adjustable Soft Start
- 200 kHz to 1 MHz Fixed Frequency PWM
- Selectable Current/D-CAP Mode Architecture
- 180° Phase Shift Between Channels
- Resistor or Inductor DCR Current Sensing
- Powergood Output for Each Channel
- OCL/OVP/UVP/UVLO Protections (OVP Disable Option)
- Thermal Shutdown (Non-Latch)
- Output Discharge Function (Disable Option)
- Integrated Boot Strap MOSFET Switch
- QFN-32 (RHB)
- APPLICATIONS
- Notebook Computer System and I/O Bus
- Point of Load in LCD TV, MFP
The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 28 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out of phase. The TPS51220 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220 is available in the 32 pin 5x5 QFN package and is specified from -40°C to 85°C.
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 | Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Pwr Controlle データシート (Rev. C) | 2009/07/03 | |||
| アプリケーション・ノート | Mosfet Driver Circuit Design Guide for TPS512xx (Rev. A) | 2019/04/01 | ||||
| アプリケーション・ノート | Independent Rail Dual Buck Converter using TPS51220 | 2013/11/22 | ||||
| アプリケーション・ノート | Intel Core i3, i5, i7 [Arrandale] Reference Design | 2010/07/21 |
設計と開発
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TPS51220EVM — TPS51220 を使用する TPS51220EVM、高性能、同期整流、降圧コンバータ 評価モジュール
The TPS51220 is a dual peak-current mode, synchronous step-down controller with three low-dropout (LDO) regulators. It is optimized for 5 V/3.3 V notebook system power supplies. A 99% duty cycle operation enables designers to complete Li-ion battery applications from 2-cells to (...)
TPS51220(A) Unencrypted PSpice Average Model Package (Rev. A)
| 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 |
|---|---|---|
| VQFN (RHB) | 32 | Ultra Librarian |
購入と品質
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