Texas Instruments TPS53015 Evaluation Module TPS53015EVM-126 TPS53015EVM-126 Datenbogen
Produktcode
TPS53015EVM-126
TP7
TP8
Test Setup
5
Test Setup
5.1
Test Equipment
Voltage Source:
•
VIN: The input voltage source VIN should be a 0-V to 30-V variable DC source capable of supplying 2
A
A
DC
. Connect VIN to J1 as shown in
Multimeters:
•
V1: VIN at TP1 (VIN) and TP2 (GND), 0-V to 30-V voltmeter.
•
V2: VOUT at TP7 (VOUT) and TP8 (GND).
•
A1: VIN input current, 0 A
DC
to 2 A
DC
Ammeter.
Output Load: The output load should be an electronic constant resistance mode load capable of 0 A
DC
to
8 A
DC
at 1.05 V.
Oscilloscope: A digital or analog oscilloscope can be used to measure the output ripple. The oscilloscope
should be set for 1-M
should be set for 1-M
Ω
impedance, 20-MHz bandwidth, AC coupling, 1-µs/division horizontal resolution,
50-mV/division vertical resolution. Test points TP7 and TP8 can be used to measure the output ripple
voltage by placing the oscilloscope probe tip through TP7 and holding the ground barrel on TP8 as shown
in
voltage by placing the oscilloscope probe tip through TP7 and holding the ground barrel on TP8 as shown
in
. Using a leaded ground connection may induce additional noise due to the large ground loop.
Figure 2. Tip and Barrel Measurement for VOUT Ripple
Fan: Some of the components in this EVM may approach temperatures of 85ºC during operation. A small
fan capable of 200 LFM to 400 LFM is recommended to reduce component temperatures while the EVM is
operating. The EVM should not be probed while the fan is not running.
fan capable of 200 LFM to 400 LFM is recommended to reduce component temperatures while the EVM is
operating. The EVM should not be probed while the fan is not running.
Recommended Wire Gauge:
•
VIN to J1: The 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).
wire less than 4 feet (2 feet input, 2 feet return).
•
J2 to LOAD: The minimum recommended wire size is 1x AWG #16, with the total length of wire less
than 4 feet (2 feet output, 2 feet return)
than 4 feet (2 feet output, 2 feet return)
5
SLUU944 – June 2012
Single Synchronous Step-Down Controller for Low-Voltage Power Rails
Copyright © 2012, Texas Instruments Incorporated