Texas Instruments TLV62080 User Manual

TLV62080, 1.2-A, High-Efficiency, Step-Down Converter in
This user's guide describes the TLV62080 evaluation module (EVM) and explains how to perform a stand-
alone evaluation or interface with a host or system. The converter is designed to deliver up to 1200 mA of
continuous current to the output. The TLV62084 shares the same EVM by swapping the IC. The
TLV62084 delivers up to 2-A continuous output current.
1 Introduction
2 Considerations for Evaluating the TLV62080
3 Test Summary
4 Schematic, Physical Layout and Bill of Materials
1 Introduction
The TLV62080 focuses on high-efficiency, step-down conversion over a wide output current range. At
medium-to-heavy loads, the converter operates in PWM mode and automatically enters the PFM or
power-save mode of operation at light-load currents to maintain high efficiency over the entire load current
range. To address the requirements of powering supply rails, the internal compensation circuit allows a
large selection of external output capacitor values, ranging from 10 µF up to 100 µF. The TLV62080
operates at a nominal frequency of 3 MHz. With its DCS-Control™ architecture, excellent load transient
performance, and output voltage regulation, accuracy is achieved. The robust architecture and safety
features allow perfect system integration. The device is available in a 2-mm × 2-mm package with thermal
pad.
2 Considerations for Evaluating the TLV62080
This integrated circuit (IC) has two modes of operation. The PWM/PFM mode is selected when the load
current is greater than half the ripple current (in continuous conduction mode). At light loads, when the
inductor current is discontinuous, the IC automatically goes into PFM mode and delivers fewer pulses,
trying to keep a tight regulation with low ripple.
3 Test Summary
The TLV62080EVM-641 board requires an adjustable dc power supply with up to a 6-V output and ≥ 600
mA for powering the input to the EVM, and a resistive output load between 825 Ω and 5 Ω. Choose the
proper power rating for the load resistor, P = V
test setup connections and jumper settings selections are configured for a stand-alone evaluation, but can
be changed to interface with external hardware such as a system load and microcontroller.
SLVU640A – December 2011 – Revised February 2014
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TLV62080, 1.2-A, High-Efficiency, Step-Down Converter in 2-mm × 2-mm
Copyright © 2011–2014, Texas Instruments Incorporated
SLVU640A – December 2011 – Revised February 2014
2-mm × 2-mm SON Package
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/R. Use at least 2× the calculated power dissipation. The
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