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

TPS54302 (ACTIVE)

4.5-V to 28-V Input, 3-A Output, EMI Friendly Synchronous Step-Down Converter

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

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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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
TPS54302 TPS54202 TPS54308 TPS54335A TPS54336A TPS56637
4.5     4.5     4.5     4.5     4.5     4.5    
28     28     28     28     28     28    
0.6     0.6     1     0.8     0.8     0.6    
26     26     26     25     25     16    
3     2     3     3     3     6    
1     1     1     1     1     1    
290     390     350     50     340     500    
510     590     350     1500     340     500    
0.04     0.04     0.3     0.6     0.6     0.125    
Enable
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Enable
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Enable
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable    
Enable
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable    
Enable
Forced Pulse Width Modulation (FPWM) Mode
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     D-CAP3    
100     100     100     90     90     91    
-40 to 125     -40 to 125     -40 to 125     -40 to 150     -40 to 150     -40 to 125    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
SOT-23-THIN | 6     SOT-23-THIN | 6     SOT-23-THIN | 6     SO PowerPAD | 8
VSON | 10    
SO PowerPAD | 8
VSON | 10    
VQFN-HR | 10    
Converter     Converter     Converter     Converter     Converter     Converter    
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  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


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