Texas Instruments Isolated Flyback Topology Module for TPS55340 TPS55340EVM-148 TPS55340EVM-148 데이터 시트
제품 코드
TPS55340EVM-148
C1: SW (10.0 V/div)
Timebase: 50 ns/div
C1: PH (10 V/div)
C2: V
IN
AC coupled (200 mV/div)
Timebase: 2.00 µs/div
C1: PH (10 V/div)
C2: V
IN
AC coupled (50 mV/div)
Timebase: 2.00 µs/div
Test Setup and Results
4.6
Input Voltage Ripple
shows the TPS55340EVM-148 input voltage ripple. The output current is the rated full load of
2.5A at V
IN
= 12V. The ripple is measured directly across the input capacitor C2.
shows the TPS55340EVM-148 input voltage ripple operating in DCM. The input voltage is 12V
and the output is loaded with 20
Ω
(250mA).
Figure 10. Input Voltage Ripple
Figure 11. DCM Input Voltage Ripple
4.7
Voltage Overshoot on SW Pin
shows the voltage overshoot on the SW pin with 200MHz bandwidth. This is measured with 24V
input voltage and 2.5A output current.
Figure 12. SW Pin Voltage Overshoot
8
TPS55340EVM-148, 8V to 24V Input, 5V Output Flyback Evaluation Module
SLVU751A – July 2012 – Revised June 2013
Copyright © 2012–2013, Texas Instruments Incorporated