Tiny Single Inductor Buck Boost Converter - TPS63050

TPS63050 (ACTIVE)

Tiny Single Inductor Buck Boost Converter

 

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Description

The TPS6305x family of devices is a high efficiency, low quiescent-current buck-boost converter, suitable for applications where the input voltage is higher or lower than the output.

Continuous output current can go as high as 500 mA in boost mode and as high as 1 A in buck mode. The maximum average current in the switches is limited to a typical value of 1 A. The TPS6305x family of devices regulate the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage, ensuring seamless transition between modes.

The buck-boost converter is based on a fixed-frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain the highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range.

The PFM/PWM pin allows the user to select between automatic-PFM/PWM mode operation and forced-PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. 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 device is packaged in a 12-pin DSBGA and in a 12-pin HotRod package.

Features

  • Real Buck or Boost with Seamless Transition
    Between Buck and Boost Mode
  • 2.5 V to 5.5 V Input Voltage Range
  • 0.5-A Continuous Output Current: VIN ≥ 2.5 V,
    VOUT = 3.3 V
  • Adjustable and Fixed Output Voltage Version
  • Efficiency > 90% in Boost Mode and > 95% in
    Buck Mode
  • 2.5-MHz Typical Switching Frequency
  • Adjustable Average Input Current Limit
  • Adjustable Soft-Start Time
  • Device Quiescent Current < 60 µA
  • Power Save Mode
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Small 1.6mm × 1.2mm, 12-pin WCSP and
    2.5mm × 2.5mm 12-pin HotRod package

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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$)
TPS63050 TPS630250 TPS63051 TPS63060 TPS63070
Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost     Buck/Boost    
2.5     2.3     2.5     2.5     2    
5.5     5.5     5.5     12     16    
2.5     2.3     3.3     2.5     2.5    
5.5     3.6     3.3     8     9    
1     4     1     2.25     3.6    
100       100     100     100    
2500     2500     2500     2200     2100    
2500     2500     2500     2600     2800    
0.045     0.035     0.045     0.03     0.05    
Adjustable Current Limit
Enable
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
Adjustable Current Limit
Enable
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Output Discharge
Power Good
Synchronous Rectification
UVLO Fixed
Voltage Margining    
-40 to 85     -40 to 85     -40 to 85     -40 to 85      
Catalog     Catalog     Catalog     Catalog     Catalog    
DSBGA
VQFN-HR    
DSBGA
VQFN-HR    
DSBGA
VQFN-HR    
WSON     VQFN-HR    
0.74 | 1ku     1.10 | 1ku     0.74 | 1ku     0.95 | 1ku     1.15 | 1ku    
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New! Interactive Design
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WEBENCH® Designer TPS63050

  Min   Max Range
Vin  V 2.5 to 5.5V
Vout  V 2.5 to 5.5V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C


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