TPS54328 具有 Eco-mode™ 的 4.5V 至 18V 输入、3A 同步降压 SWIFT™ 转换器™ | 德州仪器 TI.com.cn

TPS54328 (正在供货)

具有 Eco-mode™ 的 4.5V 至 18V 输入、3A 同步降压 SWIFT™ 转换器™

 

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描述

The TPS54328 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54328 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components.

The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads. Eco-mode allows the TPS54328 to maintain high efficiency during lighter load conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt 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 input (VIN).

The output voltage can be programmed from 0.76 V to 7 V. The device also features an adjustable soft start time. The TPS54328 is available in 8-pin DDA and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.

特性

  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
    • 100 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 Overcurrent Limit
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load

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WEBENCH® Designer TPS54328

  最小   最大 范围
输入电压  V 4.5 to 18.0V
输出电压  V 0.765 to 7V
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)
TPS54328 立即下单 4.5     18     0.76     7     3     1     700     700     0.8     Enable
Light Load Efficiency
Synchronous Rectification    
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)    
TPS54227 立即下单 4.5     18     0.76     7     2     1     700     700     0.8     Enable
Synchronous Rectification    
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)    
TPS54228 立即下单 4.5     18     0.76     7     2     1     700     700     0.8     Enable
Light Load Efficiency
Synchronous Rectification    
D-CAP2     65     -40 to 85     Catalog     SO PowerPAD | 8
SOIC | 8
VSON | 10    
Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS54327 立即下单 4.5     18     0.76     7     3     1     700     700     0.8     Enable
Synchronous Rectification    
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)    
TPS54427 立即下单 4.5     18     0.76     7     4     1     650     650     0.95     Enable
Synchronous Rectification    
Current Mode