HV301 SUTEX [Supertex, Inc], HV301 Datasheet - Page 14

• Manufacturer Part Number: HV301
• Description: Hotswap, Controllers with Circuit Breaker
• Manufacturer: SUTEX [Supertex, Inc]

Application Information, cont’d.
If separate resistor dividers are used for OV and UV, then only
the positive (V
connected to the short pin (Application Circuit 8).
If a system requires the use of a short connector pin on the
negative supply lead to guarantee that the power pins are fully
Note: capacitor may be needed to slow PWRGD dv/dt if
oscillations are observed when V
Note: capacitor may be needed to slow PWRGD dv/dt if
oscillations are observed when V
DD
) end of the UV resistor divider should be
GND
-48V
GND
-48V
GND
-48V
IN
IN
Long
Pin
is close to OV.
Long
Pin
is close to OV.
6.81kΩ
9.76kΩ
Long
Pin
16.2K
487kΩ
Long
Pin
475K
Short
Pin
Short
Pin
R1
R2
R1
R2
R3
R3
511K
R4
10K
6.2V
3
2
OV
UV
3
2
RAMP
8
V DD
7
UV
OV
RAMP
V DD
8
7
C1
10nF
C1
10nF
V EE
4
12.5mΩ
4
V EE SENSE
12.5mΩ
HV311
14
PWRGD / PWRGD
R4
HV311
R5
PWRGD / PWRGD
SENSE GATE
5
mated before the hotswap control circuit is enabled and a single
resistor divider string (R1, R2 and R3) is used, then a 6.2V to 10V
zener diode must be connected from the UV pin to the V
as seen below in Application Circuit 9.
5
6
IRF530
IRF530
GATE
Q1
6
Q1
1
1
Cload
ENABLE / ENABLE
Cload
ENABLE / ENABLE
CONVERTER
CONVERTER
DC/DC
PWM
DC/DC
PWM
Application Circuit 8
Application Circuit 9
+5V
COM
+5V
COM
HV301/HV311
EE
pin,