HV301 Ver la hoja de datos (PDF) - Supertex Inc

Número de pieza

componentes Descripción

Fabricante

HV301

Hot Swap Controller (Negative Supply Rail)

Supertex Inc 

GND

R1

487kW

R2

6.81kW

R3

9.76kW

-48V

8

VDD

3 UV

2 OV

HV301/HV311

PWRGD / PWRGD

1

HV301/

HV311

ENABLE / ENABLE

Cload

DC/DC

PWM

CONVERTER

+5V

COM

RAMP VEE

7

4

C2

C1

10nF

SENSE GATE

5

6

R4

12.5mW

Q1

IRF530

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

oscillations around are observed when VIN is close to OVLO.

Application Circuit 5

Unfortunately this will also cause some delay in responding to UV

conditions. If this UV delay is not acceptable, then separate

resistor dividers can be provided for OV and UV with a capacitor

connected from OV pin to the VEE pin (Application Circuit 6).

Using Short Connector Pin

In some systems short connector pins are used to guarantee that

the power pins are fully mated before the hot swap control circuit

is enabled. For these systems the positive (VDD) end of the R1,

R2, and R3 resistor divider should be connected to the short pin

(Application Circuit 7).

GND

R1

475kΩ

R2

16.2kΩ

-48V

8

VDD

PWRGD / PWRGD 1

3

UV

R3

511kΩ

2

OV

R4

10kΩ

HV311

ENABLE / ENABLE

Cload

DC/DC

PWM

CONVERTER

+5V

COM

RAMP VEE

7

4

SENSE GATE

5

6

C2

C1

10nF

R5

12.5mΩ

Q1

IRF530

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

oscillations around are observed when VIN is close to OVLO.

12

Application Circuit 5

A092605

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