TPS54229E 4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-Mode | TI.com

TPS54229E
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-Mode

 

Recommended alternative parts

  • TPS54229  -  Looking for a device with non Eco-mode™? Try the TPS54229.
  • TPS54329E  -  Looking for a device with more output current? Try the TPS54329E.
  • TPS54239E  -  Looking for a device with higher input voltage? Try the TPS54239E.
  • TPS54294  -  Looking for a dual output device? Try the TPS54294.
  • TPS54226  -  Looking for a device with Power-good? Try the TPS54226.

Description

The TPS54229E is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54229E 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 TPS54229E 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 TPS54229E to maintain high efficiency during lighter load conditions. The TPS54229E 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 TPS54229E 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
    – 160 mΩ (High Side) and 110 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
  • Auto-Skip Eco-mode™ for High Efficiency at Light Load

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WEBENCH® Designer TPS54229E

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.765 to 7V
Iout  A ≤ 2A
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)
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)    
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)    
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     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
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