TPS63070RNMR Buck-Boost Converter, 2V-16V Wide input voltage

The TPS63070RNMR is a buck-boost converter with high efficiency and low quiescent current that is appropriate for situations where the input voltage can be greater or lower than the output voltage. In both boost and buck modes, output currents can reach 2 A. To achieve maximum efficiency, the buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller with synchronous rectification.

The converter enters Power Save Mode at low load currents to maintain high efficiency over a wide load current range. To save battery life, the converter can be turned off. The load is separated from the battery during the shutdown. A 2.5mm x 3mm QFN packaging is available for the device.

TPS63070RNMR Pinout

TPS63070RNMR Symbol

TPS63070RNMR Footprint

TPS63070RNMR 3D Model

• Input Voltage Range: 2.0 V to 16 V

• Output Voltage Range: 2.5 V to 9 V

• Up to 95% Efficiency

• +/- 1% dc accuracy in PWM mode

• +3% / -1% dc accuracy in PFM mode

• 2 A Output Current in Buck Mode

• 2 A Output Current in Boost Mode

• (VIN = 4 V; Vout = 5 V)

• Precise ENABLE input allows

• User-defined Undervoltage lockout

• Exact sequencing

• Automatic Transition between Step Down and Boost Mode

• Typical Device Quiescent Current: 50 µA

• Fixed and Adjustable Output Voltage Options

• Output Discharge Option

• Power save Mode for Improved Efficiency at Low Output Power

• Forced Fixed Frequency Operation at 2.4 MHz and Synchronization Option

• Power Good Output

• VSEL simply allows output voltage change

• Load Disconnect During Shutdown

• Overtemperature Protection

• Input / Output Overvoltage Protection

• Available in QFN Package

TPS63070RNMR Application Circuit

A Buck-Boost converter converts a positive DC input voltage to a negative DC output voltage. The operation of the circuit is determined by the MOSFET's conduction state: On-state: The current flowing through the inductor increases, and the diode becomes blocked.

• Advantages:

Buck-boost converters are more efficient since they have fewer, smaller external components. They can step-up or step-down voltages with only a few components, and they have a reduced working duty cycle and higher efficiency across a wide range of input and output voltages.

• Disadvantages:

Because the input current and charging current of the output capacitor are not continuous, the filter size and EMI concerns are increased. Due to the inversion of the output, a complex sensing and feedback circuit is created.

Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top 10 semiconductor companies worldwide based on sales volume.