HV301/HV311
Optocoupler
Rload
GND
8
V
DD
1
PWRGD
R1
487kW
ENABLE
+5V
3
2
UV
Cload
R2
6.81kW
HV311
DC/DC
PWM
CONVERTER
COM
OV
R3
9.76kW
RAMP
V
SENSE GATE
EE
7
4
5
6
C1
10nF
-48V
R4
12.5mW
Q1
IRF530
Nt O:Vceꢂeca tpVmeyVbOViOOdOdV tVsltwVPWRGDVdv/d VafVge O
tscalle atisVeptuidVepOVtbsOpvOdVwhOiVꢀINVasVcltsOV tVꢁꢀLꢁ.
Application Circuit 3
WhOiV hOVdO ealsVtfV hOVltedVENABLEVcapcua pyVasVit Vkitwi,
usaigVeiVtꢂ tctuꢂlOpVelweysVꢂptvadOsVeVsefOVstlu atiAV(pplication
Circuit 4).
Filtering Voltage Spikes on Input Supply
IiVstmOVsys OmsVtvOpVvtl egOVsꢂakOsVtfVvOpyVshtp Vdupe atiVmey
Oxas .VVFtpV hOsOVsys OmsVeVsmellVceꢂeca tpVmeyVbOVeddOdVfptm
hOVꢁꢀVꢂaiV tV hOVꢀ VꢂaiV tVfal OpV hOVvtl egOVsꢂakOsV(Application
EE
Circuit 5).
Optocoupler
GND
8
V
DD
1
PWRGD / PWRGD
R1
487kW
ENABLE / ENABLE
+5V
3
2
UV
Cload
R2
HV311
6.81kW
DC/DC
PWM
COM
OV
CONVERTER
R3
9.76kW
RAMP
V
SENSE GATE
EE
7
4
5
6
C1
10nF
-48V
R4
60mW
Q1
IRF530
Application Circuit 4
Nt O:Vceꢂeca tpVmeyVbOViOOdOdV tVsltwVPWRGDVdv/d VafVge O
tscalle atisVeptuidVepOVtbsOpvOdVwhOiVꢀINVasVcltsOV tVꢁꢀLꢁ.
A092605
11
SUPERTEX [ Supertex, Inc ]
