5
Latch Halt Function for Over-voltage Protection
6
Thermal Shutdown (TSD) to Halt Latch at Overheating
The onboard protection circuits described above reduce the number of components
required and thus simplify design.
3-4
Standby Function
The standby mode is selected by simply dropping the voltage at the Z/C ((1) pin) to 3.5V or less.
The MR2000 Series supports an ideal standby mode employing a method developed by Shindengen
based on the use of small intermittent output ripples. Fig.7 and Fig.8 show the input voltage Pin,
and the waveform at Po = 1.1W (11V, 0.1A), for a worldwide input Po = 100W power supply for
TV applications.
Standby Po - Pin
2.5
Input voltage Pin [W]
2
1.5
1
0.5
0
0
0.5
1
AC110V
AC230V
1.5
Output voltage Po [W]
Fig.7 Input Voltage in Standby Mode
Vo:2V/DIV
V
CE
:200V/DIV
0V
I
CE
:1A/DIV
TimeBase:500
s/DIV
0A
Fig.8 Waveform in Standby Mode
Password Vol.02-06-e MR2000 Series
P
.06
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