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VS Switch & Sequence Discharge Circuit
15
Chapter 09
page
Start Up Sequence
Switch Off Sequence
LLC is switched off
LLC has started
Or +5V standby is switched off
Or Power OK line drops
Pulses are aligned and rectified by D6054 & D6055
VS drops & Power OK Line will drop
Power OK line is H T7058 conducts
VSA_Control Line will be High
VSA_Control is Low
T7058 will block
T7059 & T7052 are blocked
T7059 conducts
T7050 blocks
T7050 conducts
T7052 conducts andVS is directly discharged,
P7
while VA is discharged if VS is lower than VA
Vs is switched
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