參數(shù)資料
型號： ISL6160IB-T
廠商： INTERSIL CORP
元件分類： 電源管理
英文描述： InfiniBand +12V Bulk and +5V Auxiliary Power Controller
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
封裝： PLASTIC, MS-012AB, SOIC-14
文件頁數(shù)： 5/11頁
文件大?。?/td> 262K
代理商： ISL6160IB-T
5
ISL6160 Description and Operation
The ISL6160 is the first power supply sequencer for the
emerging InfiniBand module (IM) hot swap application. This IC
controls both the +12V VB(ulk) and +5V VA(ux) supplies
providing soft start during hot insertion and overcurrent (OC)
protection during operation.
For VB control and protection, the ISL6160 features include an
accurate current detecting comparator, current limiting for the
range of both 25W and 50W capable power ports, a current
regulated time delay to latch off and soft start turn-on ramp.
These features are all programmable with a minimum of
external passive components. The ISL6160 also includes
severe overcurrent protection that immediately shuts down the
MOSFET switch should there be a shorted IM load.
The VB_ON pin provides on-off control of the external VB
switch once VB_IN > 9V. Driving this pin high causes the gate
pin to charge the external gate capacitor with a 10uA current
setting the soft start ramp rate. Large capacitive loads can thus
be safely turned on with no inrush current spiking nor disruption
of the voltage supply rail.
The VB load current passes through an external current sense
resistor. When the voltage across the sense resistor exceeds
the user programmed ISET voltage threshold, the controller
enters current regulation (CR). The regulated current level is
fixed by the R
ISET
and R
SENSE
resistors. See Table 1 for
R
ISET
programming resistor value and the resulting nominal
CR threshold voltage.
During CR, the CTIM pin starts charging the time-out capacitor
with a 20
μ
A current source and the controller enters the delay
time to latch-off period. This feature allows transient currents
that exceed the designed limit to pass without immediately
CTIM PARAMETERS
C
TIM
Charging Current
C
TIM
Fault Pull-Up Current
Current Limit Time-Out Threshold Voltage
C
TIM
_ichg0
C
TIM
_ichg6
C
TIM
_Vth
V
CTIM
= 0V
V
CTIM
= 6V
CTIM Voltage
16
20
23
μ
A
5
8
11
mA
1.3
1.8
2.3
V
+5V AUXILIARY SUPPLY CONTROL
VA Integrated Switch On Resistance
r
DS(ON)
V
IN
= 5V, I
OUT
= 0.4A, T
A
= T
J
= 25
o
C
T
A
= T
J
= 85
o
C
V
IN
= 5V, Switch Disabled, No Load
R
L
= 10
,
C
L
= 0.1
μ
F, 10%-90%
R
L
= 10
,
C
L
= 0.1
μ
F, 90%-10%
R
L
= 10
,
C
L
= 0.1
μ
F, 90%-10%
-
0.125
0.150
-
0.160
0.200
Disabled Output Voltage
V
OUT_DIS
t_vout_rt
-
300
450
mV
V
OUT
Rising Rate
Slow V
OUT
turn-off rate
Fast V
OUT
turn-off rate
CURRENT CONTROL
-
8
-
V/mS
Toff_svout
-
8
-
V/mS
Toff_fvout
-
4
-
V/uS
Current Limit
Ilim
0.75
1
1.25
A
OC Regulation Settling Time
Tsett_ocr
R
L
= 5
,
C
L
= 0.1
μ
F to Within 10% of CR
R
L
< 1
,
C
L
= 0.1
μ
F to Within 10% of CR
-
1.5
-
ms
μ
s
Severe OC Regulation Settling Time
Tsett_socr
-
100
-
Over Current Latch-off Time
t
OC_loff
-
12
ms
I/O PARAMETERS
Fault Output Voltage
Vfault_hi
I
OUT
= 10mA
V
IN
= 5.5V
V
IN
= 4.5V
ENABLE = 0V to 5V, V
IN
= 5V, T
J
> 25
o
C
-
-
0.3
V
ENABLE High Threshold
Ven_vih
2.0
-
-
V
ENABLE Low Threshold
Ven_vil
-
-
0.8
V
μ
A
ENABLE Input Current
Ien_i
-0.5
-
0.5
BIAS PARAMETERS
Enabled VA_Iin Current
I
en_VA
I
dis_VA
V
UVLO
UV
HYS
Switches Closed, VA_Out = OPEN, T
J
>0
o
C
Switches Open, VA_Out = OPEN
-
120
200
μ
A
μ
A
Disabled VA_Iin Current
-
1
5
Undervoltage Lockout Threshold
VIN Rising, Switch Enabled
1.7
2.25
2.5
V
UV Hysteresis
50
100
-
mV
Electrical Specifications
Nominal VB = +12V, VA = +5V, T
A
= T
J
= -40
o
C - 85
o
C, Unless Otherwise Specified
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
S
TABLE 1.
NOMINAL REGULATION LEVEL
(R
SENSE
= 0.020
)
R
ISET
RESISTOR
1.0k
2.8k
3.48k
5.6k
NOTE: Nominal Vth = R
ISET
x 20
μ
A.
NOMINAL
OC Vth
20mV
56mV
70mV
112mV
CURRENT (A)
1
2.8
3.5
5.6
POWER (W)
12
33.6
42
67.2
ISL6160
相關PDF資料
PDF描述
ISL6160 Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC -40 to 85
ISL6160CB Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC -40 to 85
ISL6160CB-T InfiniBand +12V Bulk and +5V Auxiliary Power Controller
ISL6160CBZA Octal D-Type Transparent Latches With 3-State Outputs 20-PDIP -40 to 85
ISL6160CBZA-T Octal D-Type Transparent Latches With 3-State Outputs 20-PDIP -40 to 85
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