HV302 Supertex Inc, HV302 Datasheet - Page 3

• Manufacturer Part Number: HV302
• Description: Sequencing Hotswap Controllers
• Manufacturer: Supertex Inc

Power Good Outputs
V
V
I
Dynamic Characteristics
t
t
Note 1:
Note 2:
*IRF530 is a registered trademark of International Rectifier.
Pinout
PWRGD Logic
PWRGD-x(lk)
GATEHLOV
GATEHLUV
PWRGD-x(hi)
PWRGD-x(lo)
HV302
HV312
PWRGD-D (HV302)
PWRGD-D (HV312)
PWRGD-C (HV302)
PWRGD-C (HV312)
PWRGD-B (HV302)
PWRGD-B (HV312)
PWRGD-A (HV302)
PWRGD-A (HV312)
Model
________
________
________
________
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: [phone] Fax: [phone] www.supertex.com
This timing depends on the threshold voltage of the external N-Channel MOSFET. The higher its threshold is, the longer this timing.
This voltage depends on the characteristics of the external N-Channel MOSFET.
Power Good Pin Breakdown Voltage
Power Good Pin Output Low Voltage
Maximum Leakage Current
OV Comparator Transition
UV Comparator Transition
VEE
OV
UV
INACTIVE (Not Ready)
INACTIVE (Not Ready)
ACTIVE (Ready)
ACTIVE (Ready)
4
5
6
7
1
2
3
Condition
(Referenced to V
EE
PWRGD-A/B/C/D
pin)
0
1
1
0
14
13
12
11
10
9
8
VDD
TD
TC
TB
RAMP
GATE
SENSE
HI Z
HI Z
V
V
EE
EE
90
<1.0
3
0.5
Pin Description
PWRGD-D – This Power Good Output Pin is held inactive on initial
power application and goes active a programmed time delay after
PWRGD-C goes active.
PWRGD-C – This Power Good Output Pin is held inactive on initial
power application and goes active a programmed time delay after
PWRGD-B goes active.
PWRGD-B – This Power Good Output Pin is held inactive on initial
power application and goes active a programmed time delay after
PWRGD-A goes active.
PWRGD-A – This Power Good Output Pin is held inactive on initial
power application and goes active when the external MOSFET is
fully turned on.
OV – This Over Voltage (OV) 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 (UV) 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
the circuit.
V
the circuit.
TD – The resistor connected from this pin to V
delay from PWRGD-C going active to PWRGD-D going active.
TC – The resistor connected from this pin to V
delay from PWRGD-B going active to PWRGD-C going active.
TB – The resistor connected from this pin to V
delay from PWRGD-A going active to PWRGD-B going active.
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
Pin programs the servo control current limit and the circuit breaker
trip limit.
EE
DD
– This pin is the negative terminal of the power supply input to
500
500
– This pin is the positive terminal of the power supply input to
0.8
10
ns
ns
V
V
A
V
to
= 3V for an IRF530.
PWRGD-x = HI Z
I
V
Rev. D
PWRGD
PWRGD
= 1mA, PWRGD-x = LOW
= 90V, PWRGD-x = HI Z
EE
EE
EE
pin sets the time
pin sets the time
pin sets the time
04/17/02
EE