HV301/HV311
Application Information cont’d.
Latched Operation
For those applications that need to disable the automatic retry
capability, the following circuit disables the auto retry feature.
GND
8
V
DD
PWRGD / PWRGD
1
R1
487kΩ
ENABLE / ENABLE
Cload
3
2
+5V
UV
R2
6.81kΩ
HV301 / HV311
DC/DC
PWM
CONVERTER
COM
OV
R3
9.76kΩ
RAMP
7
V
SENSE GATE
EE
4
5
6
2.5MΩ
-48V
Q1
IRF530
R4
12.5mΩ
Note: capacitor may be needed to slow PWRGD dv/dt if
oscillations are observed when VIN is close to OV.
Application Circuit 17
20