Texas Instruments CSD86330EVM-717 - Evaluation Module CSD86330EVM-717 CSD86330EVM-717 Datenbogen
Produktcode
CSD86330EVM-717
TP6
TP5
Metal Ground Barrel
Probe Tip
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Test Setup
5
Test Setup
5.1
Test Equipment
Voltage Source: The input voltage source V
IN
should be a 0-V to 13.2-V variable DC source capable of
supplying 4 A
DC
. Connect V
IN
to board as shown in
Multimeters:
•
•
V1: V
IN
at TP1 (V
IN
) and TP2 (GND).
•
V2: V
OUT
at TP5 (V
OUT
) and TP6 (GND).
•
A1: V
IN
input current.
Output Load: The output load should be an electronic constant resistance mode load capable of 0 A
DC
to
10 A
DC
at 1.2 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 TP5 and TP6 can be used to measure the output ripple
voltage by placing the oscilloscope probe tip through TP5 and holding the ground barrel TP6 as shown in
voltage by placing the oscilloscope probe tip through TP5 and holding the ground barrel TP6 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 V
OUT
Ripple
Fan: Some of the components in this EVM may approach temperatures of 60°C 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 if 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 if the fan is not running.
Recommended Wire Gauge:
•
•
VIN to VIN1(12-V input): The recommended wire size is 1x AWG #18 per input connection, with the
total length of wire less than 4 feet (a 2 foot input and a 2 foot return).
total length of wire less than 4 feet (a 2 foot input and a 2 foot return).
VOUT1 to LOAD: The recommended wire size is 1x AWG #18, with the total length of wire less than 4
feet (a 2 foot input and a 2 foot return).
feet (a 2 foot input and a 2 foot return).
5
SLUU480 – February 2011
Synchronous Buck NexFET Power Block
© 2011, Texas Instruments Incorporated