HV301 datasheet(13/20 Pages) SUTEX

13 / 20 page

HV301/HV311

A092605

VDD

VEE

SENSE GATE

RAMP

-48V

12.5mΩ

487kΩ

6.81kΩ

9.76kΩ

IRF530

Cload

+5V

HV301/

HV311

COM

GND

10nF

Long

Short

Long

GND

DC/DC

PWM

CONVERTER

PWRGD / PWRGD

ENABLE / ENABLE

Note: capacitor may be needed to slow PWRGD dv/dt if gate

oscillations around are observed when V

IN is close to OVLO.

Application Circuit 6

If separate resistor dividers are used for OV and UV, then only the

positive (V

DD) end of the UV resistor divider should be 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

Application Circuit 8

mated before the hot swap 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

EE pin,

as seen below in Application Circuit 9.

VDD

VEE SENSE GATE

RAMP

-48V

IRF530

475KΩ

16.2KΩ

511KΩ

Cload

+5V

HV311

COM

GND

10nF

12.5mΩ

10KΩ

Long

Short

GND

DC/DC

PWM

CONVERTER

PWRGD / PWRGD

ENABLE / ENABLE

Note: capacitor may be needed to slow PWRGD dv/dt if gate

oscillations around are observed when V

IN is close to OVLO.

HV301 Datasheet(PDF) 13 Page - Supertex, Inc

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