IXHQ100PI Ver la hoja de datos (PDF) - IXYS CORPORATION

Número de pieza

componentes Descripción

Fabricante

IXHQ100PI

Negative Voltage Hot Swap Controller with Active Power Filter

IXYS CORPORATION 

Graph 9: Gate Voltage vs. Supply Voltage

16

14

12

10

8

6

0 20 40 60 80 100 120

Supply Voltage (V)

IXHQ 100PI

IXHQ 100SI

Graph 10: Typical Noise Attenuation

20

10

0

-10

-20

-30

-40

-50

-60

-70

1e+1 1e+2 1e+3 1e+4 1e+5 1e+6

Frequency (Hz)

Pin Descriptions

PIN # SYMBOL

1

INV

15 GSNSin

2

VCCin

3 SHNToff

4

CAPin

5

VDROP

6

SLOPE

7

OFFTM

8

AGND

FUNCTION

Invert

Input

Ground Sense

Input

Supply Voltage

Shunt Off

Active low-

pass filter

capacitor input

Active filter

offset voltage

Slope input

Off-time

Ground

DESCRIPTION

The invert input controls GSNSin’s polarity. When

invert input is high compared to AGND, then GSNSin

low indicates an insertion/removal event. When invert

input is low, then GSNSin high indicates an

insertion/removal event.

The INV pin controls the polarity sense of this input.

A 3uA internal pull-up current source causes logic

high when there is no connection at this pin. With INV

low or connected to AGND, a GSNSin low (or

connected to AGND) will keep RSTout and GATE

low, and the external power switch, Q1, off. A

disconnected GSNSin pin or when Vcc is applied to it

will allow normal operation

Positive power-supply voltage input.

This pin serves to control the enabling of the shunt

circuit. When the pin is high compared to AGND, then

the shunt regulator is in off position. A low level at

this pin activates the shunt regulator.

The output of the power active filter tracks this pin.

Adding an external RC network matching the input

noise with respect to the 3db point of the filter could

reduce the noise to a minimum.

This pin sets the drop out MOSFET voltage across the

active filter.

This input controls the current slope during power up

and controls inrush currents. Adding external

capacitors to this pin allow regulation and adjustment

of the rate of the current slope.

The OFFTM pin sets the delay time between power-

down and restart of IXHQ100. Delay time can be

increased by adding external capacitors to this pin.

The IXHQ100 system zero reference pin.

5

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