Texas Instruments TPS61230EVM-089, Руководство пользователя, Страница: 2 / 12

Introduction
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1.2 Performance Specification
Table 1 provides a summary of the TPS61230EVM-089 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 2.3 3.6 5.5 V
Output voltage PWM mode 4.9 5.0 5.1 V
PFM mode 5.035
Output current V
IN
≥ 3.3V 0 2100 mA
UVLO rising voltage JP1 installed 3.0 V
UVLO falling voltage JP1 installed 2.7 V
1.3 Modifications
Because the primary goal of the EVM is to demonstrate the small size of the TPS61230 power supply
solution, capacitors and inductors with small footprints were chosen. These capacitors and inductors were
carefully selected to maximize efficiency and minimize ripple, while minimizing overall solution size.
Changing components could improve or degrade EVM performance.
1.3.1 Fixed Output Voltage Operation
U1 can be replaced with the fixed output-voltage version of the IC for evaluation. For fixed-voltage version
operation, replace R7 with 0-
Ω resistor and remove R5.
1.3.2 Feedforward Capacitor for Better Load Transient
C7 is provided as a feedforward capacitor for optimized load transient response, when needed.
2 Setup
This section describes how to properly use the TPS61230EVM-089.
2.1 Input/Output Connector Descriptions
J1 – VIN Positive input connection from the input supply for the EVM
J2 – S+/S– Input voltage sense connections. Measure the input voltage at this point.
J3 – GND Return connection from the input supply for the EVM
J4 – VOUT Output voltage connection
J5 – S+/S– Output voltage sense connections. Measure the output voltage at this point.
J6 – GND Output return connection.
J7 – PG Power good connection for measurement
JP1 – UVLO Under voltage threshold and hysteresis program pin. Put the jumper across it to use a
user defined value, pull off the jumper to use an internal value.
JP2 – EN EN pin input jumper. Place the jumper across ON and EN to turn on the IC. Place the
jumper across OFF and EN to turn off the IC.
2.2 Setup
To operate the EVM, set jumpers JP1 and JP2 to the desired positions per Section 2.1 . Connect the input
supply to J1 and J3 and connect the load to J4 and J6.
2 TPS61230EVM-089 Evaluation Module SLVU761A – October 2013 – Revised March 2014
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