3.5V to 28V Input, 2A, 1MHz Step-Down Converter with Eco-mode - TPS54232

TPS54232 (ACTIVE)

3.5V to 28V Input, 2A, 1MHz Step-Down Converter with Eco-mode

 

Recommended alternative parts

  • TPS54332  -  Looking for a device with more output current? Try the TPS54332.
  • TPS54239E  -  Looking for a device with lower input voltage? Try theTPS54239E.
  • TPS54231  -  Looking for a device with lower switching frequency? Try theTPS54231.

Description

The TPS54232 is a 28-V, nonsynchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse-skipping Eco-Mode feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54232 is available in an 8-pin SOIC package.

Features

  • 3.5-V to 28-V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8 V
  • Integrated 80-mΩ High-Side MOSFET Supports
    up to 2-A Continuous Output Current
  • High Efficiency at Light Loads with a Pulse
    Skipping Eco-Mode
  • Fixed 1-MHz Switching Frequency
  • Typical 1-µA Shutdown Quiescent Current
  • Adjustable Slow-Start Limits Inrush Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency Fold
    Back and Thermal Shutdown Protection
  • Available in 8-Pin SOIC Package
  • Supported by WEBENCH Software Tool
    (http://www.ti.com/lsds/ti/analog/webench/overview.page)

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Parametrics Compare all products in Buck Converter (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
TPS54232 TPS54231 TPS54233 TPS54331 TPS54332 TPS54334 TPS54335A TPS54336A TPS54531
3.5    3.5    3.5    3.5    3.5    4.2    4.5    4.5    3.5   
28    28    28    28    28    28    28    28    28   
0.8    0.8    0.8    0.8    0.8    0.8    0.8    0.8    0.8   
25    25    25    25    25    25    25    25    25   
2    2    2    3    3.5    3    3    3    5   
1    1    1    1    1    1    1    1    1   
1000    570    300    570    1000    570    50    340    570   
1000    570    300    570    1000    570    1500    340    570   
0.085    0.075    0.075    0.11    0.082    0.6    0.6    0.6    0.11   
Enable
Light Load Efficiency
UVLO Adjustable   
Enable
Light Load Efficiency
UVLO Adjustable   
Enable
Light Load Efficiency
UVLO Adjustable   
Enable
Light Load Efficiency
UVLO Adjustable   
Enable
Light Load Efficiency
UVLO Adjustable   
Enable
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable   
Enable
Light Load Efficiency   
Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode   
90    90    90    90    90    90    90    90    90   
-40 to 150    -40 to 150    -40 to 150    -40 to 150    -40 to 150    -40 to 85    -40 to 150    -40 to 150    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
SOIC    SOIC    SOIC    SO PowerPAD
SOIC   
SO PowerPAD    SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD
VSON   
SO PowerPAD   
New! Interactive Design
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WEBENCH® Designer TPS54232

  Min   Max Range
Vin  V 3.5 to 28.0V
Vout  V 0.8 to 25V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 150°C


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