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HV301_05 Datasheet(数据表) 3 Page - Supertex, Inc

部件型号  HV301
说明  Hot Swap Controller (Negative Supply Rail)
下载  20 Pages
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制造商  SUTEX [Supertex, Inc]
网页  http://www.supertex.com
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HV301 Datasheet(HTML) 3 Page - Supertex, Inc

 
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3
HV301/HV311
A092605
Absolute Maximum Ratings
V
EE reference to VDD pin
+0.3V to -100V
V
PWRGD referenced to VEE Voltage
-0.3V to +100V
V
UV and VOV referenced to VEE Voltage
-0.3V to +12V
Operating Ambient Temperature
-40°C to +85°C
Operating Junction Temperature
-40°C to +125°C
Storage Temperature Range
-65°C to +150°C
Pinout
Pin Description
PWRGD – The Power Good Output Pin is held inactive on initial
power application and will go active when the external MOSFET
is fully turned on. This pin may be used as an enable control
when connected directly to a PWM power module.
OV – This Over Voltage sense pin, when raised above its high
threshold will immediately cause the GATE pin to be pulled low.
The GATE pin will remain low until the voltage on this pin falls
below the low threshold limit, initiating a new start-up cycle.
UV – This Under Voltage sense pin, when below its low threshold
limit will immediately cause the GATE pin to be pulled low. The
GATE pin will remain low until the voltage on this pin rises above
the high threshold limit, initiating a new start-up cycle.
V
EE – This pin is the negative terminal of the power supply input
to the circuit.
V
DD – This pin is the positive terminal of the power supply input
to the circuit.
RAMP – This pin provides a current output so that a timing ramp
voltage is generated when a capacitor is connected.
GATE – This is the Gate Driver Output for the external N-
Channel MOSFET.
SENSE – The current sense resistor connected from this pin to
V
EE Pin programs the circuit breaker trip limit.
PWRGD (HV301)
PWRGD (HV311)
OV
UV
VEE
VDD
RAMP
GATE
SENSE
1
2
3
4
8
7
6
5
General Description, cont’d.
PWRGD Logic
inactive state. Thereafter a programmable auto-retry timer will
hold the device off to allow the pass element to cool before
resetting and restarting. The auto-retry can be disabled using a
single resistor if desired.
The HV301/311 includes a current mode servo-circuit which can
be used as a return to limit during input voltage steps such as
would be seen in a diode “ORed” situation when power switches
back to regulated supply from battery operation.The HV301/311
allows independent programming of the trigger level of this
phenomenon so that it may be set at a different level to the
current limit level if desired. Under all circumstances the maxi-
mum servo period is limited to 100ms to protect the pass
element.
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