Table of Contents
Advertisement
ADP1046A 100Watt
Evaluation board
Figure 48 - Transient Analysis, 0.1A - 5A step load, 48VDC, SR disabled at light
Green trace: AC coupled output Voltage
Red trace: Output current, 2A/div, 5ms/div
Additional things to try:
a)
Tweaking the light load transient response (0-500mA step load).
b)
Increasing the crossover frequency and measure transient response.
c)
Measuring transient response under different load steps.
d)
Increasing the phase margin to 60 degrees by cancelling the double pole of the output LC filter by the two zeros of
the Type 3 compensation.
e)
Measuring the transient response (0.2A - 8A) by enabling the light load mode at 0.0A (SR always enabled) thus
keeping the output inductor in CCM regardless of the load.
f)
Measuring the dynamic response at an increased switching frequency of 200KHz.
load
Rev. 1.3 | Page 30 of 55
Figure 49 - Transient Analysis, 0.1A - 5A step load, 48VDC, SR enabled at light
Green trace: AC coupled output Voltage
Red trace: Output current, 2A/div, 5ms/div
PRD1386
load
Advertisement
Table of Contents
