Texas Instruments Evaluation Module for TPS5432 3A Synchronous Step-Down Converter TPS5432EVM-116 TPS5432EVM-116 데이터 시트
제품 코드
TPS5432EVM-116
V = 200 mV/div (ac coupled)
IN
Time = 1 µs/div
PH = 2 V/div
V
= 1 V/div
OUT
Time = 2 ms/div
EN = 2 V/div
V
= 5 V/div
IN
SS = 2 V/div
Test Setup and Results
2.8
Input Voltage Ripple
The TPS5432EVM-116 input voltage ripple is shown in
. The output current is the rated full load
of 3 A and V
IN
= 5 V. The ripple voltage is measured directly across the input capacitors.
Figure 8. TPS5432EVM-116 Input Ripple
2.9
Powering Up
2.9.1
Power Up Relative to V
IN
The start-up waveform shown in
shows start-up is relative to VIN rising. The input voltage is
initially applied, and when the input reaches the undervoltage lockout threshold, the start-up sequence
begins and the output ramps up at the externally set rate toward the set value of 1.8 V. The input voltage
for this plot is 5 V with a 1
begins and the output ramps up at the externally set rate toward the set value of 1.8 V. The input voltage
for this plot is 5 V with a 1
Ω
load.
Figure 9. TPS5432EVM-116 Start-Up Relative to V
IN
8
TPS5432EVM-116 3-A, SWIFT™ Regulator Evaluation Module
SLVU674 – March 2012
Copyright © 2012, Texas Instruments Incorporated