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TPS51222

アクティブ

ノート PC 電源向け、3V ~ 32V、デュアル出力、ピーク電流モード、同期整流降圧コントローラ

この製品には新バージョンがあります。

open-in-new 代替品と比較
比較対象デバイスと類似の機能
TPS51397A アクティブ 4.5V ~ 24V 入力、10A の同期整流降圧レギュレータ Upgraded adjustable soft start with a lower IQ and an extended positive operating temperature range in a smaller package.

製品詳細

Vin (min) (V) 4.5 Vin (max) (V) 32 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode current mode Topology Buck Rating Catalog Vout (min) (V) 1 Vout (max) (V) 12 Features Enable, Frequency synchronization, Light Load Efficiency, Phase Interleaving, Power good, Synchronous Rectification Iq (typ) (µA) 800 Duty cycle (max) (%) 99 Number of phases 1
Vin (min) (V) 4.5 Vin (max) (V) 32 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode current mode Topology Buck Rating Catalog Vout (min) (V) 1 Vout (max) (V) 12 Features Enable, Frequency synchronization, Light Load Efficiency, Phase Interleaving, Power good, Synchronous Rectification Iq (typ) (µA) 800 Duty cycle (max) (%) 99 Number of phases 1
WQFN (RTV) 32 25 mm² 5 x 5
  • Input Voltage Range: 4.5 V to 32 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
  • Current Mode Architecture
  • 180° Phase Shift Between Channels
  • Resistor or Inductor DCR Current Sensing
  • Current Monitor Output for Each Channel
  • Adaptive Zero Crossing Circuit
  • Powergood Output for Each Channel
  • OCL/OVP/UVP/UVLO Protections
  • Thermal Shutdown (Non-Latch)
  • Output Discharge Function
  • Integrated Boot Strap MOSFET Switch
  • QFN-32 (RTV) Package
  • Input Voltage Range: 4.5 V to 32 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
  • Current Mode Architecture
  • 180° Phase Shift Between Channels
  • Resistor or Inductor DCR Current Sensing
  • Current Monitor Output for Each Channel
  • Adaptive Zero Crossing Circuit
  • Powergood Output for Each Channel
  • OCL/OVP/UVP/UVLO Protections
  • Thermal Shutdown (Non-Latch)
  • Output Discharge Function
  • Integrated Boot Strap MOSFET Switch
  • QFN-32 (RTV) Package

The TPS51222 is a dual synchronous buck regulator controller with two 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 TPS51222 supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The high duty cycle (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 TPS51222 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51222 is available in the 32-pin 5 × 5 QFN package and is specified from -40°C to 85°C.

The TPS51222 is a dual synchronous buck regulator controller with two 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 TPS51222 supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The high duty cycle (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 TPS51222 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51222 is available in the 32-pin 5 × 5 QFN package and is specified from -40°C to 85°C.

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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 Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller データシート 2009年 1月 7日

購入と品質

記載されている情報:
  • 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
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

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