Texas Instruments Integrated 5 A, 24 V Wide Input Range Boost DC/DC Regulator Evaluation Module TPS55330EVM-017 TPS55330EVM-017 데이터 시트
제품 코드
TPS55330EVM-017
Test Setup and Results
3.2
Maximum Output Current
After adjusting input or output voltage settings, verify the maximum output current pursuant to the
equations given on the data sheet (
equations given on the data sheet (
).
3.3
Slow-Start Time
Adjust the slow-start time by changing the value of C3. The EVM uses C3 = 0.047 µF, as recommended
on the data sheet, avoiding any overshoot during start-up. A larger capacitance increases the slow-start
time while a smaller capacitance decreases it.
on the data sheet, avoiding any overshoot during start-up. A larger capacitance increases the slow-start
time while a smaller capacitance decreases it.
3.4
Other Modifications
Please see data sheet recommendations and equations when changing the switching frequency,
input/output voltage range, input inductor, output capacitors or compensation.
input/output voltage range, input inductor, output capacitors or compensation.
4
Test Setup and Results
This section describes how to properly connect, set up, and use the EVM. Included are test results typical
for the evaluation module covering efficiency, output voltage regulation, load transients, loop response,
output ripple, input ripple, start-up and shut-down.
for the evaluation module covering efficiency, output voltage regulation, load transients, loop response,
output ripple, input ripple, start-up and shut-down.
4.1
Input/Output Connections
The EVM is provided with input and output connectors and test points as shown in
. Connect a
power supply capable of supplying 5 A to J6 through a pair of 20-AWG wires. The jumper across JP1 in
the ON position (1-2) must be in place. Connect the load to J7 through a pair of 20-AWG wires. The
maximum load-current capability must be at least 2.1 A. Minimize wire lengths to reduce losses in the
wires. Header J1 provides a place to monitor the V
the ON position (1-2) must be in place. Connect the load to J7 through a pair of 20-AWG wires. The
maximum load-current capability must be at least 2.1 A. Minimize wire lengths to reduce losses in the
wires. Header J1 provides a place to monitor the V
IN
input voltages with J3 providing a convenient ground
reference. Use J2 to monitor the output voltage with J4 as the ground reference.
Table 3. EVM Connectors and Test Points
Reference Designator
Function
J1
2-pin header for V
IN
input voltage connections
J2
2-pin header for V
OUT
input voltage connections
J3, J4
2-pin header for GND connections
J5
2-pin header for synchronizing signal and ground
J6
V
IN
input voltage connector. (See
for V
IN
range.)
JP1
3-pin header for enable. Jumper installed from pins 1-2 enables and from pins 2-3 disables.
TP1
SW test point
TP2
Test point between voltage divider network and output. Used for loop-response measurements.
TP3
COMP test point
TP4
Output voltage test point at V
OUT
connector
TP5
GND test point at V
OUT
connector
3
SLVU930 – July 2013
TPS55330EVM-017 2.9-V to 4.2-V Input, 5.0-V Output Boost Evaluation
Module
Copyright © 2013, Texas Instruments Incorporated