Features
Over temperature protection (with auto-restart)
Over current shutdown
Active clamp
E.S.D protection
Status feedback
Open load detection
Logic ground isolated from power ground
IPS5451/IPS5451S
Data Sheet No.PD60159-K
Description
The IPS5451/IPS5451S are fully protected five terminal
high side switch with built in short circuit, over-tempera-
ture, ESD protection, inductive load capability and
diagnostic feedback. The over-current protection latches
off the device if the output current exceeds Ishutdown.
It can be reset by turning the input pin low. The over-
temperature protection turns off the high side switches
if the junction temperature exceeds Tshutdown. It will
automatically restart after the junction has cooled 7
o
C
below Tshutdown. A diagnostic pin is provided for status
feedback of over-current, over-temperature and open
load detection. The double level shifter circuitry allows
large offsets between the logic ground and the load
ground.
Product Summary
R
ds(on)
25m
(max)
V
clamp
50V
I
shutdown
35A
I
open load
1A
Typical Connection
FULLY PROTECTED HIGH SIDE POWER MOSFET SWITCH
Packages
5 Lead
TO220 - IPS5451
5 Lead
SMD220 - IPS5451S
Truth Table
Op. Conditions
Normal
Normal
Open load
Open load
Over current
Over current
Over-temperature
Over-temperature
In
H
L
H
L
H
L
H
L
Out
H
L
H
X
L
L (cycling)
L
L (latched)
Dg
H
H
L
H
L
H
L (cycling)
H
Load
Logic
signal
control
Logic
Logic Gnd
Load Gnd
Vcc
Out
Gnd
In
Dg
+ 5v
Status
feedback
+ VCC
Rdg
Rin
15K
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IPS5451/IPS5451S
2
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(1) Limited by junction temperature (pulsed current limited also by internal wiring)
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Rth 1
Thermal resistance junction to case
--
a
Rth 2
Thermal resistance junction to ambient
--
##
a
Rth 1
Thermal resistance with standard footprint
--
60
a
Rth 2
Thermal resistance with 1" square footprint
--
35
a
Rth 3
Thermal resistance junction to case
--
#
a
Thermal Characteristics
TO-220
D
2
PAK (SMD220)
o
C/W
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters
are referenced to GROUND lead. (TAmbient = 25
o
C unless otherwise specified).
Symbol Parameter
Min.
Max.
Units
Test Conditions
Vout
Maximum output voltage
Vcc-45 Vcc+0.3
Voffset
Maximum logic ground to load ground offset Vcc-45 Vcc+0.3
Vin
Maximum Input voltage
-0.3
5.5
Iin, max
Maximum IN current
-5
10
mA
Vdg
Maximum diagnostic output voltage
-0.3
5.5
V
Idg, max
Maximum diagnostic output current
-1
10
mA
Isd
cont.
Diode max. continuous current
(1)
(rth=62
o
C/W) IPS5451
--
2.8
(rth=80
o
C/W) IPS5451S
--
2.2
Isd
pulsed
Diode max. pulsed current
(1)
--
45
ESD1
Electrostatic discharge voltage
(Human Body)
--
4
C=100pF, R=1500
,
ESD2
Electrostatic discharge voltage
(Machine Model)
--
0.5
C=200pF, R=0
,
L=10
H
Pd
Maximum power dissipation
(1)
(rth=62
o
C/W) IPS5451
--
2
(rth=80
o
C/W) IPS5451S
--
1.56
Tj max.
Max. storage & operating junction temp.
-40
+150
Tlead
Lead temperature (soldering 10 seconds)
--
300
Vcc max. Maximum Vcc voltage
--
45
V
V
A
kV
W
o
C
IPS5451/IPS5451S
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Recommended Operating Conditions
These values are given for a quick design. For operation outside these conditions, please consult the application notes.
Symbol Parameter
Min.
Max. Units
Vcc
Continuous Vcc voltage
5.5
18
VIH
High level input voltage
4
5.5
VIL 1
Low level input voltage
-0.3
0.9
Iout
Continuous output current
(TAmbient = 85
o
C, Tj = 125
o
C, Rth = 62
o
C/W) IPS5451
--
4
(TAmbient = 85
o
C, Tj = 125
o
C, Rth = 80
o
C/W) IPS5451S
--
3.5
Iout
Continuous output current
Tc=85
o
C (TCase = 85
o
C, IN = 5V, Tj = 125
o
C, Rth = 5
o
C/W)
--
14
Rin
Recommended resistor in series with IN pin
4
6
Rdg
Recommended resistor in series with DG pin
10
20
V
A
k
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Rds(on)
ON state resistance Tj = 25
o
C
--
19
25
@Tj=25
o
C
Rds(on)
ON state resistance @ Vcc = 6V
--
22
30
(Vcc=6V)
Rds(on)
ON state resistance Tj = 150
o
C
--
32
--
Vin = 5V, Iout = 14A
@Tj=150
o
C
Vcc oper. Functional operating range
5.5
--
18
V
clamp 1
Vcc to OUT clamp voltage 1
45
49
--
Id = 10mA
(see Fig.1 & 2)
V
clamp 2
Vcc to OUT clamp voltage 2
--
50
60
Vf
Body diode forward voltage
--
0.9
1.2
Id = 14A, Vin = 0V
Iout
Output leakage current
--
10
50
Vout = 0V, Tj = 25
o
C
leakage
Icc off
Supply current when OFF
--
10
50
Vin = 0V, Vout = 0V
Icc on
Supply current when ON
--
3.5
10
mA
Vin = 5V
Icc ac
Ripple current when ON (AC RMS)
--
20
--
A
Vin = 5V
Vdgl
Low level diagnostic output voltage
--
0.1
0.4
V
Idg = 1.6 mA
Idg
Diagnostic output leakage current
--
1.5
10
Vdg = 4.5V
leakage
Vih
IN high threshold voltage
a
2.7
3.4
Vil
IN low threshold voltage
1
2.0
a
Iin, on
On state IN positive current
--
30
80
A
Vin = 4V
Vccuv+
Vcc UVLO positive going threshold
--
4.7
5.5
Vccuv-
Vcc UVLO negative going threshold
3.0
4.4
--
Inhyst.
Input hysteresis
0.2
0.6
1.5
Static Electrical Characteristics
(Tj = 25
o
C, Vcc = 14V unless otherwise specified.)
m
Vin = 5V, Iout = 14A
Id = Ishutdown
(see Fig.1 & 2)
Vin = 5V, Iout = 7A
A
V
V
V
A
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Functional Block Diagram
All values are typical
Switching Electrical Characteristics
Vcc = 14V, Resistive Load = 1
, T
j
= 25
o
C, (unless otherwise specified).
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Tdon
Turn-on delay time
--
5
20
Tr1
Rise time to Vout = Vcc - 5V
--
4
20
Tr2
Rise time from the end of Tr1
to Vout = 90% of Vcc
--
65
150
dV/dt (on) Turn ON dV/dt
--
3
6
V/
s
Eon
Turn ON energy
--
3
--
mJ
Tdoff
Turn-off delay time
--
65
150
Tf
Fall time to Vout = 10% of Vcc
--
8
20
dV/dt (off) Turn OFF dV/dt
--
5
10
V/
s
Eoff
Turn OFF energy
--
0.75
--
mJ
See figure 3
s
s
See figure 4
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Tsd+
Over-temp. positive going threshold
--
165
--
o
C
See fig. 2
Tsd-
Over-temp. negative going threshold
--
158
--
o
C
See fig. 2
I
sd
Over-current threshold
22
35
50
A
See fig. 2
I
open load
Open load detection threshold
0.3
1
2
A
Treset
Minimum time to reset protections
--
50
--
Vin = 0V
Protection Characteristics
s
Tdg Blanking time before considering Dg -- 7 100
s Part turned on with Vin =5V
2.0 V
2.6 V
+
-
S
R
Q
Level
shift
driver
Charge
pump
35 A
Tj
158C
VCC
IN
50V
Over
temperature
Over
current
VOUT
GND
DG
5.5V
5.5V
62 V
165C
40
200 K
4.2 V
4.5 V
+
-
Under voltage
lock out
Open load
22 mV
IPS5451/IPS5451S
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Lead Assignments
Part Number
IPS5451
IPS5451S
1 2 3 4 5
5 Lead - TO220
3 (Vcc)
5 Lead - D
2
PAK (SMD220)
3 (Vcc)
1 2 3 4 5
1 - Ground
2 - In
3 - Vcc
4 - DG
5 - Out
Figure 1 - Active clamp waveforms
T clamp
V clamp
( + Vcc )
( see Appl . Notes to evaluate power dissipation )
0 V
Vin
Iout
Out
Figure 2 - Protection timing diagram
Tsd+
(160 )
OI
I shutdown
T
T shutdown +
t < T reset
t > T reset
5 V
0 V
T shutdown -
I shutdown
Vin
Iout
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