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.
  • TPS54229  -  Looking for a device with less output current? Try the TPS54229.
  • TPS54339  -  Looking for a device with higher input voltage? Try theTPS54339.
  • TPS54394  -  Looking for a dual output device? Try the TPS54394.
  • TPS54325  -  Looking for a device with Power-good? Try the TPS54325.

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

View more

Parametrics Compare all products in Buck converters (integrated switch)

 
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 TPS54229 TPS54229E TPS54239 TPS54239E TPS54329E TPS54339 TPS54339E
4.5     4.5     4.5     4.5     4.5     4.5     4.5     4.5    
18     18     18     23     23     18     23     23    
0.76     0.76     0.76     0.76     0.76     0.76     0.76     0.76    
7     7     7     7     7     7     7     7    
3     2     2     2     2     3     3     3    
1     1     1     1     1     1     1     1    
650     650     650     600     600     650     600     600    
650     650     650     600     600     650     600     600    
0.8     0.8     0.85     0.6     0.6     0.8     0.85     0.6    
Enable
Synchronous Rectification    
Enable
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
Enable
Synchronous Rectification    
Enable
Light Load Efficiency
Synchronous Rectification    
D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2     D-CAP2    
85     90     90     90     90     85     90     90    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
SO PowerPAD | 8     SO PowerPAD | 8     SO PowerPAD | 8     SO PowerPAD | 8     SO PowerPAD | 8     SO PowerPAD | 8     SO PowerPAD | 8     SO PowerPAD | 8    
Converter     Converter     Converter     Converter     Converter