HV301/HV311
GND
8
V
DD
PWRGD / PWRGD
1
R1
475kΩ
ENABLE / ENABLE
Cload
3
2
+5V
UV
R2
R3
HV301/
HV311
16.2kΩ
511kΩ
DC/DC
PWM
CONVERTER
COM
OV
R4
10kΩ
RAMP
V
4
SENSE GATE
EE
7
5
6
R6
C1
10nF
-48V
R5
12.5mΩ
Q1
IRF530
Nt O:Vceꢂeca tpVmeyVbOViOOdOdV tVsltwVPWRGDVdv/d VafVge O
tscalle atisVeptuidVepOVtbsOpvOdVwhOiVꢀINVasVcltsOV tVꢁꢀLꢁ.
Application Circuit 11
Reverse Polarity Protection
ThOVUꢀVeidVꢁꢀVꢂaisVepOVꢂpt Oc OdVegeais VpOvOpsOVꢂtlepa yVaiꢂu
suꢂꢂlaOsVbyVai OpielVclemꢂaigVdatdOsVeidV hOVfeul VcuppOi sVepO
suffacaOi lyVlama OdVbyV hOVamꢂOdeicOVtfV hOVOx OpielVpOsas tp
davadOp,VhtwOvOp,VeVltwVcuppOi VdatdOVwa hVeV100ꢀVbpOekdtwi
pe aigVmus VbOVaisOp OdVaiVsOpaOsVwa hV hOVꢀDDVꢂai.
ThasVmO htdV(shtwiVaiVApplication Circuit 12)VVwallVꢂpt Oc V hO
ht VsweꢂVcti ptlVcapcua VhtwOvOp,VduOV tV hOVai paisacVdatdOVaiV hO
Ox OpielVMꢁSFET,V hOVltedVwallVit VbOVꢂpt Oc OdVfptmVpOvOpsO
ꢂtlepa yVvtl egOs.
D1
GND
8
V
DD
PWRGD / PWRGD
1
R1
487kΩ
ENABLE / ENABLE
Cload
+5V
3
2
UV
R2
HV311
6.81kΩ
DC/DC
PWM
CONVERTER
COM
OV
R3
9.76kΩ
RAMP
7
V
4
SENSE GATE
EE
5
6
C1
10nF
-48V
R4
12.5mΩ
Q1
IRF530
Nt O:Vceꢂeca tpVmeyVbOViOOdOdV tVsltwVPWRGDVdv/d VafVge O
tscalle atisVeptuidVepOVtbsOpvOdVwhOiVꢀINVasVcltsOV tVꢁꢀLꢁ.
Application Circuit 12
A092605
15
SUPERTEX [ Supertex, Inc ]
