hip1012 Intersil Corporation, hip1012 Datasheet - Page 5

• Manufacturer Part Number: hip1012
• Description: Dual Power Distribution Controller
• Manufacturer: Intersil Corporation

Electrical Specifications
HIP1012 Description and Operation
The HIP1012 is a multi featured dual power supply
distribution controller, including programmable current
limiting regulation and time to latch off. Additionally the
HIP1012 operates both as a +3.3V and 5V or a +5V and
+12V power supply controller with each mode having
appropriate Under Voltage (UV) fault notification levels.
Upon initial power up HIP1012 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 HIP1012 turns on in a soft start mode
protecting the supply rail from sudden current loading. If
either PWRON pin is pulled low the HIP1012 will be in true
hot swap mode. Both PWRON pins must be high to turn off
the HIP1012 thus isolating the power supply from the load
through the external FETs.
Gate Turn-On Time
Gate Turn-On Current
3X Gate Discharge Current
5V Under Voltage Threshold
3.3V Under Voltage Threshold
3.3/5VG High Voltage
SUPPLY CURRENT AND IO SPECIFICATIONS
V
V
V
Current Limit Time-Out
PWRON Pull-up Voltage
PWRON Rising Threshold
PWRON Hysteresis
PWRON Pull-Up Current
Current Limit Time-Out Threshold (C
C
C
C
R
Charge Pump Output Current
Charge Pump Output Voltage
Charge Pump Output Voltage - Loaded
Charge Pump POR Rising Threshold
Charge Pump POR Falling Threshold
DD
DD
DD
TIM
TIM
TIM
ILIM
Supply Current
POR Rising Threshold
POR Falling Threshold
Charging Current
Discharge Current
Pull-Up Current
Pin Current Source Output
PARAMETER
5
V
Unless Otherwise Specified (Continued)
TIM
DD
)
= 12V, C
Qpmp_VIo
Qpmp+Vth
PWR_hys
Qpmp_Vo
Qpmp-Vth
PWR_Vth
C
C
C
SYMBOL
PWRN_V
Qpmp_Io
3.3V
PWRN_I
R
5V
C
3/5VG
TIM
TIM
TIM
t
I
3XdisI
T
ILIM
VG
ON5V
ON5V
I
VDD
TIM
ILIM
VUV
_disI
_disI
VUV
_Vth
= 0.01 F, C
_Io
_I
HIP1012, HIP1012A
C
C
C
C
PWRON pin open
V
C
No load
Load current = 100 A
CTIM
VG
VG
VG
TIM
PUMP
TIM
= 0.01 F
= 0.01 F
= 0.01 F, PWRON = Low
= 0.1 F
= 8V
= 0.1 F, C
= 0.1 F, R
TEST CONDITIONS
SENSE
At turn-on, the gate capacitor of each external N-Channel
MOSFET is charged with a 10 A current source. These
capacitors create a programmable ramp (soft turn-on). A
charge pump supplies the gate drive for the 12V supply
switch driving that gate to 17V.
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 controller enters current regulation.
At this time the time-out capacitor, C
a 10 A current source and the controller enters the time out
period. The length of the time out period is set by the single
external capacitor (see Table 2) placed from the C
(pin 10) to ground and is characterized by a lowered gate
drive voltage to the appropriate external N-Channel
MOSFET. Once C
is tripped resulting in both N-Channel MOSFETs being
latched off.
PUMP
= 16V
= 0.1 , C
BULK
TIM
= 220 F, ESR = 0.5 , T
charges to 2V, an internal comparator
4.35
2.65
11.2
17.2
16.2
15.6
15.2
MIN
320
0.5
9.5
9.3
1.8
1.1
0.1
1.8
1.7
3.5
16
60
90
8
4
8
-
TYP
0.75
11.9
10.0
17.4
16.7
15.7
100
560
4.5
2.8
9.8
2.4
1.5
0.2
2.6
10
20
80
10
16
TIM
5
8
2
5
, starts charging with
A
= T
MAX
4.65
2.95
10.7
10.3
16.5
16.2
100
110
800
3.2
0.3
2.2
3.5
6.5
12
10
24
12
J
2
-
-
-
-
-
= 0
o
TIM
C to 70
UNITS
mA
mA
mA
pin
ms
ms
A
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A
A
o
C,