TPS63021 High Efficiency Single Inductor Buck-Boost Converter with 4A Switch | TI.com

TPS63021
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High Efficiency Single Inductor Buck-Boost Converter with 4A Switch

 

Description

The TPS6302x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, a one-cell Li-ion or Li-polymer battery, supercapacitors or other supply rails. Output currents up to 3 A are supported. When using batteries, they can be discharged down to below 2 V. 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 4 A. 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 TPS6302x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 14-pin VSON package measuring 3 mm × 4 mm (DSJ).

Features

  • Input voltage range: 1.8 V to 5.5 V
  • Adjustable output voltage: 1.2 V to 5.5 V
  • Output current for VIN > 2.5 V, VOUT = 3.3 V: 2 A
  • High efficiency over the entire load range
    • Operating quiescent current: 25 µA
    • Power save mode with mode selection
  • Average current mode buck-boost architecture
    • Automatic transition between modes
    • Fixed frequency operation at 2.4 MHz
    • Synchronization possible
  • Power good output
  • Safety and robust operation features
    • Overtemperature, overvoltage protection
    • Load disconnect during shutdown
  • Create a custom design using the

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  Min   Max Range
Vin  V 1.8 to 5.5V
Vout  V 3.3 to 3.3V
Iout  A ≤ 3A
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
TPS63021 Order now Buck-Boost     1.8     5.5     3.3     3.3     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