Test/Review of Flypower 1A PS08B050K (Enerpower)

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HKJ
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Location: Copenhagen, Denmark
Test/Review of Flypower 1A PS08B050K (Enerpower)

Flypower 1A PS08B050K (Enerpower)
DSC_3727
Official specifications:


  • Input: 100-240VAC 50/60Hz
  • Output: 5.0V 1000mA

I got it from Enerpower
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Measurements


  • Power consumption when idle is 0.08 watt
  • Usb port coding is usb charger (DCP)

Flypower%201A%20PS08B050K%20load%20sweep
The overload protection kicks in at 1.5A.
Flypower%201A%20PS08B050K%20load%20test
There is no problem supplying 1A for one hour.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
Temp2991
M1: 43,8°C, M2: 42,9°C, HS1: 75,0°C
HS1 is the transformer.
Temp2992
M1: 56,5°C, M2: 45,0°C, HS1: 62,9°C
Here HS1 is the rectifier diode.
Temp2993
M1: 37,8°C, HS1: 49,3°C
Temp2994
M1: 42,8°C, M2: 41,5°C, HS1: 74,7°C
Again HS1 is the rectifier diode.
Temp2995
M1: 63,2°C, HS1: 69,2°C
The two hot spots are the transformer and the rectifier diode.
10ohm
Noise at 0.5A load is 13mV rms and 370mVpp
5ohm
Noise at 1A load is 18mV rms and 370mVpp
Tear down
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Putting pressure on the charger in my vice did open it.
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The chargers uses a resistor as a fuse and has a discrete bridge rectifier, between the two mains capacitors there is an inductor.
There is also a inductor between the two output capacitors.
This circuit do not use any opto feedback and to not have a safety capacitor between mains and low volt side.
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The two inductors can be easily seen from this side.
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U1 is the mains switcher IC.
D7 is the rectifier diode, the white stuff is probably to get better heat transfer to the case.
Notice the missing resistor below the usb connector, they are for models with Apple coding.
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There is fairly good isolation distance between mains and low volt side.
Testing with 2500 volt and 5000 volt between mains and low volt side, did not show any safety problems.
Conclusion
A fairly standard 1A charger, no problems and no fancy functions.
Notes
The charger was supplied by Enerpower for review.
Index of all tested USB power supplies/chargers
Read more about how I test USB power supplies/charger

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

acml
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Joined: 06/12/2014 - 09:06
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Thanks for the review.