IXHQ100 IXYS [IXYS Corporation], IXHQ100 Datasheet - Page 5

• Manufacturer Part Number: IXHQ100
• Description: Negative Voltage Hot Swap Controller with Active Power Filter
• Manufacturer: IXYS [IXYS Corporation]

Pin Descriptions
Pin Descriptions
Pin Descriptions
Pin Descriptions
Pin Descriptions
16
14
12
10
Graph 9: Gate Voltage vs. Supply Voltage
Graph 9: Gate Voltage vs. Supply Voltage
Graph 9: Gate Voltage vs. Supply Voltage
Graph 9: Gate Voltage vs. Supply Voltage
Graph 9: Gate Voltage vs. Supply Voltage
8
6
0
PIN #
20
15
1
2
3
4
5
6
7
8
Supply Voltage (V)
40
SYMBOL
SHNToff
VDROP
GSNSin
OFFTM
SLOPE
VCCin
AGND
CAPin
INV
60
80
Supply Voltage Positive power-supply voltage input.
capacitor input
Ground Sense
offset voltage
FUNCTION
Active filter
Active low-
Slope input
Shunt Off
pass filter
Off-time
Ground
Invert
100
Input
Input
120
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
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
-10
-20
-30
-40
-50
-60
-70
20
10
1e+1 1e+2 1e+3 1e+4 1e+5 1e+6
0
DESCRIPTION
Graph 10: Typical Noise Attenuation
Graph 10: Typical Noise Attenuation
Graph 10: Typical Noise Attenuation
Graph 10: Typical Noise Attenuation
Graph 10: Typical Noise Attenuation
Frequency (Hz)
IXHQ 100PI
IXHQ 100SI