TPS54329 4.5V to 18V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode | TI.com

TPS54329 (ACTIVE) 4.5V to 18V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode

 

Recommended alternative parts

  • TPS54329E  -  Looking for a device with Eco-mode™? Try the TPS54329E.
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Description

The TPS54329 is an adaptive on-time D-CAP2 mode synchronous buck converter. TheTPS54329 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 TPS54329 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54329 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 VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54329 is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.

Features

  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7.0 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 100 mΩ (High Side) and 74 mΩ (Low Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 650-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit

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WEBENCH® Designer TPS54329

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.765 to 7V
Iout  A ≤ 3A
Ambient Temp  °C -40 to 85°C

Parametrics

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Part number Order 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)
TPS54329 Order now 4.5     18     0.76     7     3     1     650     650     0.8     Enable
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     85     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54229 Order now 4.5     18     0.76     7     2     1     650     650     0.8     Enable
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54229E Order now 4.5     18     0.76     7     2     1     650     650     0.85     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54239 Order now 4.5     23     0.76     7     2     1     600     600     0.6     Enable
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54239E Order now 4.5     23     0.76     7     2     1     600     600     0.6     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog