CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1.
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2. All voltages are relative to GND, unless otherwise specified.
Electrical Specifications
PARAMETER
12V CONTROL SECTION
Current Limit Threshold Voltage
(Voltage Across Sense Resistor)
V
DD
= 12V, C
VG
= 0.01F, C
TIM
= 0.1F, R
SENSE
= 0.1, C
BULK
= 220F, ESR = 0.5,
T
A
= T
J
= 0°C to 70°C, Unless Otherwise Specified
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
IL12V
V
IL12V
3XV
iL12V
3XV
IL12V
20%iLrt
10%iLrt
1%iLrt
RT
SHORT
t
ON12V
I
ON12V
3XdisI
12V
VUV
V12VG
R
ILIM
=10k
R
ILIM
= 5k
R
ILIM
=10k
R
ILIM
= 5k
200% Current Overload, R
ILIM
= 10k,
R
SHORT
= 6.0
200% Current Overload, R
ILIM
= 10k,
R
SHORT
= 6.0
200% Current Overload, R
ILIM
= 10k,
R
SHORT
= 6.0
C
12VG
= 0.01F
C
12VG
= 0.01F
C
12VG
= 0.01F
12VG = 18V
92
47
250
100
-
-
-
-
-
8
0.5
10.5
100
53
300
165
2
4
10
500
12
10
0.75
10.8
17.3
108
59
350
210
-
-
-
1000
-
12
-
11.0
17.9
mV
mV
mV
mV
s
s
s
ns
ms
A
A
V
V
3X Current Limit Threshold Voltage
(Voltage Across Sense Resistor)
20%
Current Limit Response Time
(Current within 20% of Regulated Value)
10%
Current Limit Response Time
(Current within 10% of Regulated Value)
1%
Current Limit Response Time
(Current within 1% of Regulated Value)
Response Time To Dead Short
Gate Turn-On Time
Gate Turn-On Current
3X Gate Discharge Current
12V Undervoltage Threshold
Qpumped 12VG Voltage
3.3V/5V CONTROL SECTION
Current Limit Threshold Voltage
(Voltage Across Sense Resistor)
3X Current Limit Threshold Voltage
(Voltage Across Sense Resistor)
20%
Current Limit Response Time
(Current within 20% of regulated value)
10%
Current Limit Response Time
(Current within 10% of Regulated Value)
1%
Current Limit Response Time
(Current within 1% of Regulated Value)
Response Time To Dead Short
Gate Turn-On Time
C
PUMP
= 0.1F
16.8
V
IL5V
3XV
IL5V
R
ILIM
=10k
R
ILIM
= 5k
R
ILIM
=10k
R
ILIM
= 5k
200% Current Overload, R
ILIM
= 10k,
R
SHORT
= 2.5
200% Current Overload, R
ILIM
= 10k,
R
SHORT
= 2.5
200% Current Overload, R
ILIM
= 10k,
R
SHORT
= 2.5
92
47
250
100
-
-
-
-
-
100
53
300
155
2
4
10
500
5
108
59
350
210
-
mV
mV
mV
mV
s
-
s
-
s
800
-
ns
ms
RT
SHORT
t
ON5V
C
VG
= 0.01F
C
VG
= 0.01F
FN4419 Rev 6.00
March 2004
Page 4 of 15
HIP1012A
Electrical Specifications
PARAMETER
Gate Turn-On Current
3X Gate Discharge Current
5V Undervoltage Threshold
3.3V Undervoltage Threshold
3.3/5VG High Voltage
V
DD
= 12V, C
VG
= 0.01F, C
TIM
= 0.1F, R
SENSE
= 0.1, C
BULK
= 220F, ESR = 0.5,
T
A
= T
J
= 0°C to 70°C, Unless Otherwise Specified
(Continued)
SYMBOL
I
ON5V
3XdisI
5V
VUV
3.3V
VUV
3/5VG
TEST CONDITIONS
C
VG
= 0.01F
C
VG
= 0.01F, PWRON = Low
MIN
8
0.5
4.35
2.65
11.2
TYP
10
0.75
4.5
2.8
11.9
MAX
12
-
4.65
2.95
-
UNITS
A
A
V
V
V
SUPPLY CURRENT AND IO SPECIFICATIONS
V
DD
Supply Current
V
DD
POR Rising Threshold
V
DD
POR Falling Threshold
Current Limit Time-Out
PWRON Pull-up Voltage
PWRON Rising Threshold
PWRON Hysteresis
PWRON Pull-Up Current
Current Limit Time-Out Threshold (C
TIM
)
C
TIM
Charging Current
C
TIM
Discharge Current
C
TIM
Pull-Up Current
R
ILIM
Pin Current Source Output
Charge Pump Output Current
Charge Pump Output Voltage
Charge Pump Output Voltage - Loaded
Charge Pump POR Rising Threshold
Charge Pump POR Falling Threshold
T
ILIM
PWRN_V
PWR_Vth
PWR_hys
PWRN_I
C
TIM
_Vth
C
TIM
_I
C
TIM
_disI
C
TIM
_disI
R
ILIM
_Io
Qpmp_Io
Qpmp_Vo
Qpmp_VIo
Qpmp+Vth
Qpmp-Vth
C
PUMP
= 0.1F, C
PUMP
= 16V
No load
Load current = 100A
V
CTIM
= 8V
C
TIM
= 0.1F
PWRON pin open
I
VDD
4
9.5
9.3
16
1.8
1.1
0.1
60
1.8
8
1.7
3.5
90
320
17.2
16.2
15.6
15.2
8
10.0
9.8
20
2.4
1.5
0.2
80
2
10
2.6
5
100
560
17.4
16.7
16
15.7
10
10.7
10.3
24
3.2
2
0.3
100
2.2
12
3.5
6.5
110
800
-
-
16.5
16.2
mA
V
V
ms
V
V
V
A
V
A
mA
mA
A
A
V
V
V
V
HIP1012A Description and Operation
The HIP1012A is a multifeatured dual power supply distribution
controller, including programmable current limiting regulation
and time to latch off. Additionally the HIP1012A operates both
as a +3.3V and 5V or a +5V and +12V power supply controller
with each mode having appropriate UnderVoltage (UV) fault
notification levels.
Upon initial power up HIP1012A 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
HIP1012A turns on in a soft start mode protecting the supply
rail from sudden current loading. If either PWRON pin is
pulled low the HIP1012A will be in true hot swap mode. Both
PWRON pins must be high to turn off the HIP1012A thus
isolating the power supply from the load through the external
FETs.
At 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). 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 Overcurrent (OC) voltage threshold value,
(see Table 1) the controller enters current regulation. At this
time the time-out capacitor, C
TIM
, starts charging with a 10A
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
TIM
pin (pin 10) to
ground and is characterized by a lowered gate drive voltage to
the appropriate external N-Channel MOSFET. Once C
TIM
charges to 2V, an internal comparator is tripped resulting in
分立器件
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