TPS54325 4.5V 至 18V 输入、3A 同步降压 SWIFT™ 转换器 | 德州仪器 TI.com.cn

TPS54325
此产品已上市,且可供购买。 可提供某些产品的较新替代品。
4.5V 至 18V 输入、3A 同步降压 SWIFT™ 转换器

 

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描述

The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 device enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution.

The main control loop for the TPS54325 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS54325 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VCC input , and from 2.0-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54325 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.

特性

  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VCC Input Voltage Range: 4.5 V to 18 V
  • Wide VIN Input Voltage Range: 2.0 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized for
    Lower Duty Cycle Applications – 120 mΩ (High Side)
    and 70 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output

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WEBENCH® Designer TPS54325

  最小   最大 范围
输入电压  V 4.5 to 18.0V
输出电压  V 0.765 to 5.5V
输出电流  A ≤ 3A
环境温度  °C -40 to 85°C

参数

与其它产品相比 降压转换器(集成开关) 邮件 下载到电子表格中
Part number 立即下单 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 Type Package size: mm2:W x L (PKG)
TPS54325 立即下单 4.5     18     0.76     5.5     3     1     700     700     0.85     Enable
Power Good
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     HTSSOP | 14     Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)    
TPS54326 立即下单 4.5     18     0.76     5.5     3     1     700     700     0.85     Enable
Light Load Efficiency
Power Good
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     HTSSOP | 14
VQFN | 16    
Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
TPS54327 立即下单 4.5     18     0.76     7     3     1     700     700     0.8     Enable
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     65     -40 to 85     Catalog     SO PowerPAD | 8
VSON | 10    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS54328 立即下单 4.5     18     0.76     7     3     1     700     700     0.8     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     65     -40 to 85     Catalog     SO PowerPAD | 8
VSON | 10    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
10VSON: 9 mm2: 3 x 3 (VSON | 10)