小型、10A、8V~14V 入力、SWIFT™ シリーズ・キャパシタ降圧コンバータ - TPS54A20

TPS54A20 (供給中)

小型、10A、8V~14V 入力、SWIFT™ シリーズ・キャパシタ降圧コンバータ

 

推奨代替製品

  • TPSM84A21  -  The TPSM84A21 power module speeds up your time to market for output voltages from 0.55V to 1.35V.
  • TPSM84A22  -  The TPSM84A22 power module speeds up your time to market for output voltages from 1.2V to 2V.

 

 

概要

The TPS54A20 is a two-phase, synchronous series capacitor buck converter designed for small size, low voltage applications from a 12-V input rail. This topology uniquely merges a switched capacitor circuit with a two phase buck converter. Advantages include automatic current balancing between the inductors, lower switching losses which enable high frequency (HF) operation, and voltage step-down through the series capacitor. Small, low profile inductors used with the TPS54A20 significantly reduce total solution area and height. An adaptive on-time control architecture provides fast transient response and accurate voltage regulation at up to 10-MHz operating frequency. Fixed frequency operation during steady state is maintained through the use of a phase lock loop (PLL) to lock switching signals to a reference oscillator.

特長

  • Two-phase, Synchronous Series Capacitor Buck
    Converter
  • Automatic Current Balancing Between Phases
  • 2-MHz to 5-MHz Per Phase Switching Frequency
  • 14-ns Minimum On-Time
  • 0.51-V to 2-V Output Voltage Range with ±0.5%
    Feedback Reference Voltage
  • Input Overvoltage Lockout for 17-V Surge
    Protection
  • Adjustable Current Limit with Auto Restart
    (Hiccup)
  • Synchronizes to an External Clock
  • Fixed Frequency in Steady State
  • Adaptive On-Time Control
  • Internal Feedback Loop Compensation
  • Internal Gate Drive LDO with External Supply
    Option
  • EN Pin Allowing for Adjustable Input UVLO
  • Selectable Soft-Start Time
  • Monotonic Startup with Pre-biased Output
  • Output Power Good Indicator (Open Drain)
  • Output Overvoltage/Undervoltage Protection

詳細を表示

機能一覧 他の製品と比較 降圧型コンバータ (スイッチ内蔵)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS54A20
8   
14   
0.5   
2   
10   
1   
4000   
10000   
5   
Adjustable Current Limit
Enable
Frequency Synchronization
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Constant on-time (COT)   
25   
-40 to 125   
Catalog   
VQFN-HR   
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WEBENCH® Designer TPS54A20

  最小   最大 範囲
入力電圧  V 8.0 to 14.0V
出力電圧  V 0.5 to 2.0V
負荷電流  A ≤ 10A
周囲温度  °C -40 to 125°C


電源占有面積 部品コスト 効率


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