TPS54302 4.5-V to 28-V Input, 3-A Output, EMI Friendly Synchronous Step-Down Converter | TI.com

TPS54302
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
4.5-V to 28-V Input, 3-A Output, EMI Friendly Synchronous Step-Down Converter

 

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Description

The TPS54302 is a 4.5-V to 28-V input voltage range, 3-A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5-ms internal soft start to reduce component count.

By integrating the MOSFETs and employing the SOT-23 package, the TPS54302 achieves the high power density and offers a small footprint on the PCB.

Advanced Eco-mode implementation maximizes the light load efficiency and reduces the power loss.

In the TPS54302, the frequency spread spectrum operation is introduced for EMI reduction.

Cycle-by-cycle current limit in both high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.

Features

  • 4.5-V to 28-V Wide Input Voltage Range
  • Integrated 85-mΩ and 40-mΩ MOSFETs for 3-A, Continuous Output Current
  • Low 2-μA Shutdown, 45-μA Quiescent Current
  • Internal 5-mS Soft-Start
  • Fixed 400-kHz Switching Frequency
  • Frequency Spread Spectrum to Reduce EMI
  • Advanced Eco-mode Pulse Skip
  • Peak Current Mode Control
  • Internal Loop Compensation
  • Overcurrent Protection for Both MOSFETs with Hiccup Mode Protection
  • Over Voltage Protection
  • Thermal Shutdown
  • SOT-23 (6) Package

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WEBENCH® Designer TPS54302

  Min   Max Range
Vin  V 4.5 to 28.0V
Vout  V 0.6 to 25V
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)
TPS54302 Order now 4.5     28     0.6     26     3     1     400     400     0.04     Enable
Light Load Efficiency
Pre-Bias Start-Up
Spread Spectrum
Synchronous Rectification
UVLO Adjustable
Soft Start Fixed    
Current Mode     100     -40 to 125     Catalog     SOT-23-THIN | 6     Converter     6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)    
TPS54202 Order now 4.5     28     0.6     26     2     1     500     500     0.04     Enable
Light Load Efficiency
Pre-Bias Start-Up
Spread Spectrum
Synchronous Rectification
UVLO Adjustable
Soft Start Fixed    
Current Mode     100     -40 to 125     Catalog     SOT-23-THIN | 6     Converter     6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)    
TPS54202H Order now 4.5     28     0.6     26     2     1     500     500     0.04     Enable
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Soft Start Fixed    
Current Mode     100     -40 to 125     Catalog     SOT-23-THIN | 6     Converter     6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)    
TPS54308 Order now 4.5     28     1     26     3     1     350     350     0.3     Enable
Forced PWM
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Soft Start Fixed    
Current Mode     100     -40 to 125     Catalog     SOT-23-THIN | 6     Converter     6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)    
TPS54335A Order now 4.5     28     0.8     24     3     1     50     1500     0.6     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Fixed    
Current Mode     90     -40 to 150     Catalog