8
Test points
Table 8.
Test points
Voltage reference
Name
Description
Referenced to high voltage
(connected to mains voltage)
Line
Mains voltage line
Neutral
Mains voltage neutral (after input switch and fuse)
Drain
Viper drain
L_ZVS
Line on optocoupler for ZVS function
N_ZVS
Neutral on optocoupler for ZVS function
COMP
Viper comp pin
VCC_AC
Positive non regulated auxiliary power supply point
GND_AC
Reference non regulated auxiliary power supply point
G1I
T1 gate signal
G2I
T2 gate signal
G3I
T3 gate signal
OUT1
T1 A2 voltage
OUT2
T2 OUT voltage
OUT3
T3 OUT voltage
Referenced to insulated voltage
(insulated from mains voltage)
VDD
Power supply (5V or 3.3V)
3.3V OUT
3.3V power supply
GND
GND
5VDC
5V power supply
VOUT
Flyback output voltage
ZVS
ZVS signal
G1
T1 gate signal
G2
T2 gate signal
G3
T3 gate signal
LED1
LED1 signal
LED2
LED2 signal
LED3
LED3 signal
MODE
MODE signal
LED4
LED4 signal
T1
T1 push button signal
T2
T2 push button signal
T3
T3 push button signal
TP+
TP+ push button signal
TP-
TP- push button signal
Power Time +
Power Time + push button signal
Power Time -
Power Time - push button signal
UM2304
Test points
UM2304
-
Rev 3
page 34/46