TPS63811 2.5-A high-efficient buck-boost converter with I²C interface for dynamic voltage scaling | TI.com

TPS63811
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
2.5-A high-efficient buck-boost converter with I²C interface for dynamic voltage scaling

 

Description

The TPS63810 and TPS63811 are high efficiency, high output current buck-boost converters fully programmable through I2C. Depending on the input voltage, they automatically operate in boost, buck or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage.

The transitions between modes happen at defined thresholds and avoid unwanted toggling within the modes to reduce output voltage ripple.

Two registers, accessible through I2C, set the output voltage, and a VSEL pin selects which output voltage register is active. Thus the devices can support dynamic voltage scaling. If the output voltage register is changed during operation or the VSEL pin is toggled, the device transits in a defined, programmable ramp-rate.

Features

  • Input voltage range: 2.2 V to 5.5 V
  • Output voltage range: 1.8 V to 5.2 V
    • I2C-configurable during operation and shutdown
    • VSEL pin to toggle between two output voltage presets
  • Output current
    • Up to 2.5 A for VI ≥ 2.5 V, VO = 3.3 V
    • Up to 2.5 A for VI ≥ 2.8 V, VO = 3.5 V
  • High efficiency over entire load range
    • Low 13-µA operating quiescent current
    • Automatic power save mode and forced PWM mode (I2C-configurable)
  • Peak current mode buck-boost architecture
    • Defined transitions between buck, buck-boost and boost operation
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature and overvoltage protection
    • True load disconnect during shutdown
    • Forward and backward current limit
  • Two device options:
    • TPS63810: Pre-programmed output voltages (3.3 V, 3.45 V)
    • TPS63811: Program output voltages prior to start-up
  • Solution size of < 20 mm2 with only four external components

All trademarks are the property of their respective owners.

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS63811

  Min   Max Range
Vin  V 2.2 to 5.5V
Vout  V 1.825 to 5.2V
Iout  A ≤ 2.5A
Ambient Temp  °C -40 to 125°C

Parametrics

Compare all products in Buck-boost, inverting & split-rail converters (integrated switch) Email Download to Excel
Part number Order 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
TPS63811 Order now Buck-Boost     1.9     5.5     1.825     5.2     5.8     100     500     3100     Dynamic Voltage Scaling
Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed    
0.013     2.5     Catalog     Converter     -40 to 85     DSBGA | 15    
TPS63020 Order now Buck-Boost     1.8     5.5     1.2     5.5     4     100     2200     2600     Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
0.05     2     Catalog     Converter     -40 to 85     VSON | 14    
TPS630250 Order now Buck-Boost     2.3     5.5     2.3     3.6     4.5     100     2500     2500     Enable
Light Load Efficiency
Load Disconnect
Output Discharge
Synchronous Rectification
UVLO Fixed    
0.035     2     Catalog     Converter     -40 to 85     DSBGA | 20
VQFN-HR | 14    
TPS63027 Order now Buck-Boost     2.3     5.5     1     5.5     4.5     100     2500     2500     Enable
Light Load Efficiency
Output Discharge    
0.035     2     Catalog     Converter     -40 to 85     DSBGA | 25    
TPS63050 Order now Buck-Boost     2.5     5.5     2.5     5.5     1     100     2500     2500     Adjustable Current Limit
Enable
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification
UVLO Fixed    
0.045     0.5     Catalog     Converter     -40 to 85     DSBGA | 12
VQFN-HR | 12    
TPS63070 Order now