HIP1013 Ver la hoja de datos (PDF) - Renesas Electronics
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HIP1013 Datasheet PDF : 7 Pages
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HIP1013
Typical Performance Curves (Continued)
102.5
102.0
12 OC VTth
101.5
101.0
5 OC Vth
10.2
VDD LOW TO HIGH
10.0
9.8
VDD HIGH TO LOW
100.5
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 7. OC VOLTAGE THRESHOLD WITH = RILIM 10k
HIP1013 Description and Operation
The HIP1013 offers the designer a cost efficient 5V and 12V
true hot plug controller. This device drives two external
N-Channel MOSFET switches and uses a charge pump to
provide 17V to drive the gate of the 12V supply switch. The
HIP1013 features Over Current (OC) programing with a single
external resistor, RILIM and during turn-on, the gate capacitor
of each external N-Channel MOSFET is charged with a 10A
current source. These capacitors create a programmable ramp
(soft turn-on).
Upon initial power up, the HIP1013 can either isolate the
voltage supply from the load by holding the external N-Channel
MOSFET switches off or apply the supply rail voltage directly
to the load for true hot swap capability. In either case the
HIP1013 turns on in a soft start mode protecting the supply rail
from sudden current loading.
The load currents pass through two external current sense
resistors. When the voltage across either resistor exceeds the
user programmed Over Current (OC) voltage threshold value,
(see Table 1) the HIP1013 controller turns both N-Channel
MOSFETs off in 2s.
TABLE 1.
RILIM RESISTOR
NOMINAL OC VTH
15K
150mv
10K
100mV
7.5K
75mV
4.99K
50mV
NOTE: Nominal OC Vth = RILIM x 10 A
The HIP1013 is reset by a rising edge on either PWRON pin
and is turned on by either PWRON pin being driven low. The
HIP1013 can control either +12V/5V or +3.3V/+5V supplies.
Tying the PWRON1 pin to VDD, invokes the +3.3V/+5V voltage
mode. In this mode, the external charge pump capacitor is not
needed and CPUMP, pin 11 is also tied directly to VDD. Upon
9.6
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
FIGURE 8. POWER ON RESET VOLTAGE THRESHOLD
any OC or Under Voltage (UV) condition the PGOOD fault
indicating signal will pull low when tied high through a resistor
to the logic supply.
HIP1013 Application Considerations
There is no unique and specific HIP1013 application
evaluation board. Since the HIP1013 is pin compatible with
the HIP1012 device, you can substitute a HIP1013 for the
existing HIP1012 in either of the HIP1012EVAl1 or EVAL2
boards. Otherwise contact your Intersil Corporation sales office
and an already modified board will be provided. Although pin
compatible to the HIP1012, the HIP1013 is a less featured dual
power supply distribution controller and does not include
programmable current limiting regulation and delay time to
latch off.
Random resets can also occur if the HIP1013 (PINS 8 and 14)
sense pins are pulled below ground when turning off a highly
inductive load. Place a large load capacitor (10-50F) on the
output to eliminate unintended resets.
Physical layout of RSENSE resistors is critical to avoid the
possibility of false over current occurrences. Ideally trace
routing between the RSENSE resistors and the HIP1013 VS and
VISEN pins are direct and as short as possible with zero
current in the sense lines.
CORRECT
INCORRECT
TO HIP1013
VS AND VISEN
TO HIP1013
VS AND VISEN
CURRENT
SENSE RESISTOR
FN4516 Rev 3.00
August 2004
Page 6 of 7
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