ISL6150IB Intersil, ISL6150IB Datasheet - Page 7

• Manufacturer Part Number: ISL6150IB
• Description: IC CTRLR HOT PLUG NEG VOLT 8SOIC
• Manufacturer: Intersil
• Type: Hot-Swap Controllerr

Specifications of ISL6150IB

• Applications: General Purpose, VoIP
• Internal Switch(s): No
• Voltage - Supply: 36 V ~ 72 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ISL6140/ISL6150 Block Diagram
Typical Values for a representative
system; which assumes:
36V to 72V supply range; 48 nominal; UV = 37V;
OV = 71V
1A of typical current draw; 2.5A overcurrent
100µF of load capacitance (CL); equivalent RL of 48Ω
(R = V/I = 48V/1A)
R
R
R
R
R
R
C
C
Q
1
2
3
4
5
6
1
2
1
: 0.02Ω (1%)
: 10Ω (5%)
: 18kΩ (5%)
: 562kΩ (1%)
: 9.09kΩ (1%)
: 10kΩ (1%)
: 150nF (25V)
: 3.3nF (100V)
: IRF530 (100V, 17A, 0.11Ω)
-48V IN
GND
R
R
R
4
5
6
2 OV
3 UV
V
(1.223V)
UVL
4 V
+
-
V
, V
EE
EE
7
OVH
+
-
V
V
CB
R
EE
1
+
+
-
-
(50mV)
5 SENSE
+
-
ISL6140, ISL6150
VOLTAGE) AND
V
CC
GENERATOR
REFERENCE
(INTERNAL
C
1
V
8 V
EE
GATE DRIVE
LOGIC AND
DD
R
2
Q
Applications: Quick Guide to
Choosing Component Values
(See Block Diagram for reference)
This section will describe the minimum components
needed for a typical application, and will show how to
select component values. (Note that “typical” values
may only be good for this application; the user may
have to select some component values to match the
system). Each block will then have more detailed
explanation of how it works, and alternatives.
R
overvoltage (OV) trip points. When the power supply
ramps up and down, these trip points (and their 20mV
nominal hysteresis) will determine when the gate is
allowed to turn on and off (the UV and OV do not affect
the PWRGD output). The input power supply is divided
down such that when each pin is equal to the trip point
(nominal is 1.223V), the comparator will switch.
V
V
The values of R
will give trip points of UV = 37V and OV = 71V.
Q
to the output load, when properly enabled. It needs to
1
V
V
V
V
6 GATE
4
UV
OV
1 -
CC
PG
UVL
CB
R
, R
3
(50mV)
(1.7V)
= 1.223 (R
is the FET that connects the input supply voltage
= 1.223 (R
, V
5
C
, R
2
OVH
6
- together set the Under-Voltage (UV) and
PWRGD/PWRGD
OUTPUT DRIVE
7 DRAIN
4
+
-
= 562k, R
4
4
V
V
EE
+ R
+ R
PG
(1.7V)
5
5
+ R
+ R
5
= 9.09k, and R
6
6
)/(R
)/(R
1 PWRGD (6150)
1 PWRGD (6140)
5
6
CL
)
+ R
-48V
6
GND
)
6
RL
OUT
LOAD
= 10k
FN9039.4