28V, 0.5A Step-Down Converter with SNOOZE Mode - TPS62175

TPS62175 (ACTIVE)

28V, 0.5A Step-Down Converter with SNOOZE Mode

Description

The TPS6217x is a high efficiency synchronous step-down DC/DC converter, based on the DCS-Control™ topology.

With a wide operating input voltage range of 4.75 V to 28 V, the device is ideally suited for systems powered from multi cell Li-Ion as well as 12 V and even higher intermediate supply rails, providing up to 500-mA output current.

The TPS6217x automatically enters power save mode at light loads, to maintain high efficiency across the whole load range. As well, it features a sleep mode to supply applications with advanced power save modes like ultra low power micro controllers. The power good output may be used for power sequencing and/or power on reset.

The device features a typical quiescent current of 22 µA in normal mode and 4.8 µA in sleep mode. In sleep mode, the efficiency at very low load currents can be increased by as much as 20%. In shutdown mode, the shutdown current is less than 2 µA and the output is actively discharged.

The TPS6217x, available in an adjustable and a fixed output voltage version, is packaged in a small 2-mm × 3-mm 10-pin WSON package.

Features

  • DCS-Control™ Topology
  • Input Voltage Range 4.75 V to 28 V
  • Quiescent Current Typically 4.8 µA (Sleep Mode)
  • 100% Duty Cycle Mode
  • Active Output Discharge
  • Power Good Output
  • Output Current of 500 mA
  • Output Voltage Range 1 VDC to 6 V
  • Switching Frequency of Typically 1 MHz
  • Seamless Power Save Mode Transition
  • Undervoltage Lockout
  • Short Circuit Protection
  • Over Temperature Protection
  • Available in 2-mm × 3-mm 10-pin WSON Package

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Parametrics Compare all products in Step-Down (Buck) Converter

 
Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Topology
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Compensation
Special Features
Brand
Preset Vout (V)
Vref Accuracy (Typ) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS62175 TPS62150 TPS62160 TPS62170 TPS62171 TPS62172 TPS62173 TPS62177
1     1     1     1     1     1     1     1    
4.7     3     3     3     3     3     3     4.7    
28     17     17     17     17     17     17     28    
1     0.9     0.9     0.9     1.8     3.3     5     3.3    
6     6.3     6     6     1.8     3.3     5     3.3    
0.5     1     1     0.5     0.5     0.5     0.5     0.5    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
Buck
Inverting Buck-Boost    
  2500                
1     1.7     1.8     1.05     1.05     1.05     1.05      
0.0048     0.017     0.017     0.017     0.017     0.017     0.017     0.0048    
100     100     100     100     100     100     100     100    
Fixed     Adjustable     Fixed     Fixed     Fixed     Fixed     Fixed      
Internal     Internal     Internal     Internal     Internal     Internal     Internal      
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining    
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification    
DCS-Control     DCS-Control     DCS-Control     DCS-Control     DCS-Control     DCS-Control     DCS-Control      
        1.8     3.3     5      
1.8     1.8     3     3     3     3     3      
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
10WSON     16QFN     8VSSOP
8WSON    
8WSON     8WSON     8WSON     8WSON     10WSON    
0.70 | 1ku     0.85 | 1ku     0.80 | 1ku     0.60 | 1ku     0.60 | 1ku     0.60 | 1ku     0.60 | 1ku     0.70 | 1ku    
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WEBENCH® TPS62175
    Min   Max   Range  
  Vin V 4.75 to 28.0V  
  Vout V 1.0 to 6.0V  
  Iout A ≤ 0.5A  
  Ambient Temp °C -40 to 85°C  
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