HV311LG datasheet(16/21 Pages) SUTEX

tên linh kiện	HV311LG

Giải thích chi tiết về linh kiện	Hotswap, Controllers with Circuit Breaker

PDF	21 Pages

Scroll/Zoom	100%

nhà sản xuất	SUTEX [Supertex, Inc]

Trang chủ	http://www.supertex.com

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16 / 21 page

HV301/HV311

Reverse Polarity Protection

The UV and OV pins are protected against reverse polarity input

supplies by internal clamping diodes and the fault currents are

sufficiently limited by the impedance of the external resistor

divider, however, a low current diode with a 100V breakdown

rating must be inserted in series with the V

DD pin.

Application Information, cont’d.

This method (shown in Application Circuit 12) will protect the

hotswap control circuit however, due to the intrinsic diode in the

external MOSFET, the load will not be protected from reverse

polarity voltages.

Application Circuit 12

VDD

VEE

SENSE GATE

RAMP

-48V

12.5m

Ω

487k

Ω

6.81k

Ω

9.76k

Ω

IRF530

Cload

+5V

HV311

COM

GND

10nF

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.

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