TPS63024 High Efficiency 1.5A Single Inductor Buck-Boost Converter | TI.com

TPS63024 (ACTIVE)

High Efficiency 1.5A Single Inductor Buck-Boost Converter

 

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Description

The TPS63024 are high efficiency, low quiescent current buck-boost converters suitable for application where the input voltage is higher or lower than the output. Output currents can go as high as 1.5A in boost mode and as high as 3A in buck mode. The maximum average current in the switches is limited to a typical value of 3A. The TPS63024 regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring a seamless transition between modes. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range. There is a PFM/PWM pin that allows the user to choose between automatic PFM/PWM mode operation and forced PWM operation. During PWM mode a fixed-frequency of typically 2.5MHz 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 20-pin WCSP package measuring 1.766 mm x 2.086mm.

Features

  • Real Buck or Boost operation with automatic and seamless transition between Buck and Boost operation
  • 2.3V to 5.5V input voltage range
  • 1.5A Continuous Output Current : VIN≥ 2.5V, VOUT= 3.3V
  • Adjustable and fixed output voltage
  • Efficiency up to 95% in Buck or Boost mode and up to 97% when VIN=VOUT
  • 2.5MHz typical switching frequency
  • 35µA operating quiescent current
  • Integrated Soft –Start
  • Power Save Mode
  • True shutdown function
  • Output capacitor discharge function
  • Over-Temperature Protection and Over current Protection
  • Wide capacitance selection
  • Small 1.766 mm x 2.086mm, 20-pin WCSP

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Parametrics Compare all products in Buck-boost, inverting & split-rail converters (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)
Features
Iq (Typ) (mA)
Iout (Max) (A)
Rating
Type
Operating temperature range (C)
Package Group
TPS63024 TPS63010 TPS630241 TPS630242 TPS630250 TPS630251 TPS630252 TPS63027 TPS63050 TPS63805
Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost    
2.3     2     2.3     2.3     2.3     2.3     2.3     2.3     2.5     1.3    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5    
2.5     1.2     2.9     3.3     2.3     2.9     3.3     1     2.5     1.8    
3.6     5.5     2.9     3.3     3.6     2.9     3.3     5.5     5.5     5.0    
3     2.2     3     3     4.5     4.5     4.5     4.5     1     4.5    
100     100     100     100     100     100     100     100     100     100    
2500     2200     2500     2500     2500     2500     2500     2500     2500     2500    
2500     2400     2500     2500     2500     2500     2500     2500     2500     2500    
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
Dynamic Voltage Scaling
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Output Discharge    
Adjustable Current Limit
Enable
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
Enable
Light Load Efficiency
Load Disconnect
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed    
0.035     0.04     0.035     0.035     0.035     0.035     0.035     0.035     0.045     0.011    
1.5     0.8     1.5     1.5     2     2     2     2     0.5     2    
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