參數(shù)資料
型號(hào): HV301
廠商: Supertex, Inc.
英文描述: Hotswap, Controllers with Circuit Breaker
中文描述: 熱插拔控制器與斷路器
文件頁(yè)數(shù): 12/21頁(yè)
文件大小: 664K
代理商: HV301
12
HV301/HV311
When the details of the load ENABLE circuitry is not known,
using an optocoupler always provides a safe solution
(
Application Circuit 4
).
Application Information, cont’d.
Application Circuit 5
Filtering Voltage Spikes on Input Supply
In some systems over voltage spikes of very short duration may
exist. For these systems a small capacitor may be added from
the OV pin to the V
EE
pin to filter the voltage spikes (
Application
Circuit 5
).
Application Circuit 4
VDD
UV
OV
VEE
4
SENSE GATE
RAMP
-48V
Cload
+5V
HV311
8
3
2
COM
1
GND
Optocoupler
R4
60m
R1
487k
R2
6.81k
R3
9.76k
Q1
IRF530
C1
10nF
5
7
6
DC/DC
PWM
CONVERTER
PWRGD / PWRGD
ENABLE / ENABLE
Note: capacitor may be needed to slow PWRGD dv/dt if
oscillations are observed when V
IN
is close to OV.
VDD
UV
OV
VEE
SENSE GATE
RAMP
-48V
R4
12.5m
R1
487k
R2
6.81k
R3
9.76k
Q1
IRF530
Cload
+5V
HV301/
HV311
8
3
2
5
7
4
COM
1
GND
C1
10nF
C2
6
PWRGD / PWRGD
DC/DC
PWM
CONVERTER
ENABLE / ENABLE
Note: capacitor may be needed to slow PWRGD dv/dt if
oscillations are observed when V
IN
is close to OV.
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