DAK-18 Power Integrations, DAK-18 Datasheet - Page 22

• Manufacturer Part Number: DAK-18
• Description: KIT DESIGN ACCELERATOR MODEM
• Manufacturer: Power Integrations
• Type: Design Accelerator Kit (DAK)r

Specifications of DAK-18

• Contents: Power Supply, Samples, PCB, Software and Documentation
• For Use With/related Products: TOP234P
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 596-1002

10 W, Multiple Output, Isolated Power Supply
12 Load Transient Response (75% to 100% Load Step)
Transient response is measured by changing the load, at twice the input line frequency,
from 75% and 100%. The peak of the output voltage response is controlled by the output
capacitor ESR while the recovery time is controlled by the output filter and the loop
response.
Figure 16 - 3.3 V and 5 VDC Response to 3.3 V
The stability of the power supply under various line and load conditions can be confirmed
by observing the phase margin at crossover (0 dB) and the attenuation (-dB) at positive
feedback (≥360
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
Load Step 75% - 100%
(1.125 A to 1.5 A) at 85 VAC
(5 V @ 0.9 A).
º
Phase).
Figure 18 - Worst Case Phase Margin and Gain (Full Load VAC).
3.3
5 V
0.5 A / div
Figure 17 - 3.3 V and 5 VDC Response to 5 V
72.8
Load Step 75% - 100%
(0.9 A to 0.675 A) at 85 VAC
(3.3 V @ 1.5 A).
0
Phase margin
3.3
0.5 A / div
5 V
05-Dec-2002
32dB Attenuation
Page 22 of 28