Texas Instruments 32A Single Output, Two Phase Stackable Synchronous Buck Converter Evaluation Module TPS40140EVM-003 TPS40140EVM-003 Datenbogen
Produktcode
TPS40140EVM-003
www.ti.com
Test Set Up
4
Test Set Up
4.1
Recommended Test Equipment
4.1.1
Voltage Source
V
IN
The input voltage source (V
IN
) should be a 0 V to 15V variable DC source capable of 10 A
DC
. Connect VIN
to J1 as shown in
.
4.1.2
Meters
V1: V
IN
, 0 V to 15V voltmeter
V2: V
OUT
, 0 V to 5V voltmeter
I1: 0 V to 10A current meter
4.1.3
Load
LOAD
The Output Load (LOAD) should be an Electronic Constant Current Mode Load capable of 0–40Adc at
1.5V
The Output Load (LOAD) should be an Electronic Constant Current Mode Load capable of 0–40Adc at
1.5V
4.1.4
Oscilloscope
A Digital or Analog Oscilloscope can be used to measure the ripple voltage on V
OUT
. The Oscilloscope
should be set for 1M
Ω
impedance, 20MHz Bandwidth, AC coupling, 1
m
s/division horizontal resolution,
10mV/division vertical resolution for taking output ripple measurements. Test points TP9 and TP10 can be
used to measure the output ripple voltage by placing the oscilloscope probe tip through TP9 and holding
the ground barrel to TP10 as shown in
used to measure the output ripple voltage by placing the oscilloscope probe tip through TP9 and holding
the ground barrel to TP10 as shown in
. Using a leaded ground connection may induce additional
noise due to the large ground loop area.
4.1.5
Recommended Wire Gauge
V
IN
to J1
The connection between the source voltage, V
IN
and J1 of the EVM can carry as much as 6 Amps DC.
The minimum recommended wire size is 1x AWG #16 per input connection, with the total length of wire
less than 4 feet (2 feet input, 2 feet return).
less than 4 feet (2 feet input, 2 feet return).
J3, J4 to LOAD (Power)
The power connection between J3 and J4 of the EVM and LOAD can carry as much as 32Adc. The
minimum recommended wire size is 2x AWG #14, with the total length of wire less than 4 feet (2 feet
output, 2 feet return).
The power connection between J3 and J4 of the EVM and LOAD can carry as much as 32Adc. The
minimum recommended wire size is 2x AWG #14, with the total length of wire less than 4 feet (2 feet
output, 2 feet return).
5
SLVU219A – August 2007 – Revised November 2010
Using the TPS40140EVM-003 A 32-A Single Output Two-Phase Stackable
Synchronous Buck Converter
Copyright © 2007–2010, Texas Instruments Incorporated