Introduction
2
SLVUBE7 – March 2018
Copyright © 2018, Texas Instruments Incorporated
TLV62585PEVM-030 Evaluation Module
1
Introduction
The TLV62585XDRL device is a high-frequency, synchronous, step-down converter optimized for a small
solution size and high efficiency. With an input voltage range of 2.5 V to 5.5 V, common battery
technologies are supported. The devices focus 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
Power Save Mode
operation at light load to maintain high efficiency over the entire load-current
range. The internal compensation circuit allows a compact solution and small external components.
Together with its adaptive off-time control architecture, excellent load transient performance, and output
voltage regulation, accuracy is achieved. The device is available in a SOT-563 package.
1.1
Background
The TLV62585PEVM-030 uses the TLV62585XDRL step-down converter and it is set to 1.8-V output. The
EVM operates with full-rated performance with an input voltage between 2.5 V and 5.5 V.
1.2
Performance Specification
provides a summary of the TLV62585PEVM-030 performance specifications. All specifications are
given for an ambient temperature of 25°C.
Table 1. Performance Specification Summary
Specification
Test Conditions
MIN
TYP
MAX
Unit
Input voltage
2.5
5.5
V
Output voltage
1.8
V
Output current
0
3
A
1.3
Modifications
The PCB for this EVM is designed to accommodate additional output capacitors C5 and C6 as well as an
additional input capacitor C1.
1.3.1
Input and Output Capacitors
C5 and C6 are provided for additional output capacitors. These capacitors are not required for proper
operation but can be used to reduce the output voltage ripple and to improve the load transient response.
The total output capacitance must remain within the recommended range in
Synchronous Buck Converter in 2-mm × 2-mm QFN Package
for proper operation.
1.3.2
Adjustable-Output IC U1 Operation
U1 is configured for evaluation of the adjustable-output version. This unit is set to 1.8 V. Resistors R1 and
R2 can be used to set the output voltage between 0.6 V and Vin. For recommended values, see
TLV62585 3-A High Efficiency Synchronous Buck Converter in 2-mm × 2-mm QFN Package
.