High Efficient Single Inductor Buck-Boost Converter with 1-A Switches  - TPS63031

TPS63031 (ACTIVE)

High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

 

Description

The TPS6303x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-ion or Li-polymer battery. Output currents can go as high as 600 mA while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed frequency, pulse width modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters power-save mode to maintain high efficiency over a wide load current range. The power-save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1000 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery.

The TPS6303x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 10-pin VSON package measuring 2.5 mm × 2.5 mm (DSK).

Features

  • Input Voltage Range: 1.8 V to 5.5 V
  • Fixed and Adjustable Output Voltage Options from
    1.2 V to 5.5 V
  • Up to 96% Efficiency
  • 800-mA Output Current at 3.3 V in Step-Down
    Mode (VIN = 3.6 V to 5.5 V)
  • Up to 500-mA Output Current at 3.3 V in Boost
    Mode (VIN > 2.4 V)
  • Automatic Transition Between Step-Down and
    Boost Mode
  • Device Quiescent Current less than 50 µA
  • Power-Save Mode for Improved Efficiency at Low
    Output Power
  • Forced Fixed Frequency Operation and
    Synchronization Possible
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Available in a Small 2.5-mm × 2.5-mm 10-Pin
    VSON Package (QFN)

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Parametrics Compare all products in Buck/Boost, Inverting or Split-Rail Converter (Integrated Switch)

 
Topology
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Duty Cycle (Max) (%)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Special Features
Operating Temperature Range (C)
Rating
Package Group
Approx. Price (US$)
TPS63031 TPS63000 TPS63001 TPS63002 TPS63010 TPS63011 TPS63012 TPS63020 TPS63021 TPS63030 TPS63036 TPS63060 TPS63061
Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost    
1.8     1.8     1.8     1.8     2     2     2     1.8     1.8     1.8     1.8     2.5     2.5    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     12     12    
3.3     1.2     3.3     5     1.2     2.8     2.9     1.2     3.3     1.2     1.2     2.5     5    
3.3     5.5     3.3     5     5.5     3.3     3.4     5.5     3.3     5.5     5.5     8     5    
1     1.8     1.8     1.8     2.2     2.2     2.2     4     4     1     1     2.25     2.25    
100     100     100     100     100     100     100     100     100     100     100     100     100    
2200     1250     1250     1250     2200     2200     2200     2200     2200     2200     2200     2200     2200    
2600     1500     1500     1500     2400     2400     2400     2600     2600     2600     2600     2600     2600    
0.025     0.04     0.04     0.04     0.04     0.04     0.04     0.05     0.05     0.025     0.025     0.03     0.03    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
SON     VSON     VSON     VSON     DSBGA     DSBGA     DSBGA     VSON     VSON     SON     DSBGA     WSON     WSON    
0.82 | 1ku     0.95 | 1ku     0.95 | 1ku     0.95 | 1ku     1.00 | 1ku     1.00 | 1ku     1.00 | 1ku     1.30 | 1ku     1.30 | 1ku     0.82 | 1ku     0.82 | 1ku     1.25 | 1ku     1.25 | 1ku    

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