HLK-PM03 AC-DC 220V to 3.3V 1A 3W Step Down Buck isolated power supply module

Items

Technical Parameters

Units

Notes

No-load rated output

voltage

3.3±0.1

Vdc

Full-load rated output

voltage

3.3±0.2

Vdc

Short time maximum

output current

≥1100

mA

Rated output current

1000

mA

Voltage regulation

±0.2

%

Load regulation

±0.5

%

Input low voltage efficiency

Vin=115Vac, Output full load ≥72

%

Input high voltage efficiency

Vin=230Vac, Output full load ≥72

%

Output ripple and noise

(mVp-p)

≤100

Rated input voltage, output full load. With 20MHz

bandwidth oscilloscope, Load side 10uF and 0.1uF

capacitance test.

mV

Switching on/off overshoot amplitude

 (Rated input voltage, output plus 10% load)≤ 5

%VO

Output over-current protection

Output maximum load 110-150%

A

Output short circuit protection

Direct short circuit in normal output and automatic return to normal operation after removal of short circuit

No-damage to the whole device