EPR-000014 Datasheet, PDF (18/28 Pages) Power Integrations, Inc. – Engineering Prototype Report - 3 W Universal Input TinySwitch-II TNY264 Power Supply

EPR-000014 – 9 V, 0.33 A, 3 W TNY264 Adapter
22-Feb-2002
9 Waveform Scope Plots
The following bench data was collected with a Yokogawa DL1540L oscilloscope, Kikusui
electronic load and at an AC input frequency of 50 Hz.
9.1 Output Ripple Measurement Results
Output ripple measurement at worst-case 265 V_AC is presented across the loading range,
20 MHz oscilloscope bandwidth. In all cases, output ripple is maintained below
100 mVp-p. See Figure 15 for details of scope probe. The output ripple waveshape is a
function of AC input voltage and load and may vary with the TNY264 operating mode.
V_{OUT_AC}
Load: 0% / 0 A
V_{OUT_AC}
Load: 50% / 0.17 A
V_{OUT_AC}
Load: 100% / 0.33 A
Figure 14. Output Ripple (265 V_AC, 0 A, 0.17 A & 0.33 A Loading, 50 mV/div)
Power Integrations, Inc.
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