Electrical And Optical Characteristics And Performance; Main Power Supply; Input Characteristics; Output Characteristics - Acer A231H Service Manual

Acer
3.

Electrical and Optical Characteristics and Performance

3.1 Main Power Supply

3.1.1 Input characteristics

Items
AC Input Voltage range
AC Input Voltage rating
AC input frequency range
AC input frequency rating
AC Input Current
Inrush Current
AC-DC power Efficiency
Note2. Before each test, the buck capacitor need to be discharged.
Before each test, it must be 10 minutes at least after the latest test.
Hot star not component be damaged.

3.1.2 Output characteristics

Items
Ripple and Noise
DC Output Voltage
DC output loading
capability
Rise Time
Dynamic load change
Hold-up time
Overshoot
Turn on delay time
Power management
Note3: Paralleled a 0.1uF ceramic Cap. And 47uF aluminum Cap. Between the end of DC loading side,
Measured band-width=20MHz. Ripple voltage of +25V is less than 1500mv when enter into burst mode.
3.1.3 Protection characteristics
OPP
SCP(short circuit protection)
OVP(Over voltage protection)
Condition
Universal input full range
Universal input full range
90~264Vac
100~240Vac
100Vac
240Vac
100Vac,cold star,25°C
240Vac,cold star,25°C
DC output full loading
Condition
+25V output
+5V output
Audio 5V output
+25V output
+5V output
Audio 5V output
25V loading:0.3A~1.4A
5V loading:0.75A~1.5A
Audio 5V: 0A~1.2A
25v loading:0.1A~1.5A
5V loading: 0A
AC input: 100V~240V
Protection
90~264Vac
100~240Vac
47~63Hz
50~60Hz
1.5A(max)
0.8A(max)
35A (max)
70A(max)
≥80%
Spec
<800mv
<500mv
<500mv
<480mv
<100mv
<100mv
Vcc25V:23.2V~28V
Vcc5V: 4.75V~5.25V
Audio 5V: 4.95V~5.45V
Vcc25V: 23.8V~30V
Vcc5V: 4.75V~5.25V
Vcc5V/1.8A,
Vcc25V/1.4A
Audio 5V: 1.5A
<20mS
>10mS
<10%
2S
Condition
nominal AC input
with auto-recovery function
Auto recovery
Acer –LCD-A231H
Spec
See Note2
Note
With system See note 3
With dummy Load
For system active
For power saving or DC
off
See Table-1
Spec
60W ( min )
<output capacitor voltage
Note