Features
Over temperature protection (with auto-restart)
Short-circuit protection (current limit)
Active clamp
E.S.D protection
Status feedback
Open load detection
Logic ground isolated from power ground
IPS521G
Data Sheet No.PD 60157-H
Description
The IPS521G is a fully protected five terminal high side
switch with built in short circuit, over-temperature, ESD
protection, inductive load capability and diagnostic
feedback. The output current is controlled when it
reaches Ilim value. The current limitation is activated
until the thermal protection acts. The over-tempera-
ture protection turns off the high side switch if the
junction temperature exceeds Tshutdown. It will au-
tomatically restart after the junction has cooled 7
o
C
below Tshutdown. A diagnostic pin is provided for
status feedback of short-circuit, over-temperature
and open load detection. The double level shifter
circuitry allows large offsets between the logic ground
and the load ground.
Package
Product Summary
R
ds(on)
100m
(max)
V
clamp
50V
I
Limit
10A
V
open load
3V
Typical Connection
FULLY PROTECTED HIGH SIDE POWER MOSFET SWITCH
8 Lead SOIC
Load
Logic
signal
control
Logic
Logic Gnd
Load Gnd
Vcc
Out
Gnd
In
Dg
+ 5v
Status
feedback
+ VCC
Output pull-up resistor
Rdg
Rin
15K
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
H
L
L (cycling)
L
L (limiting)
Dg
H
L
H
H
L
L
L
L
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1
IPS521G
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
Rth1
Thermal resistance with standard footprint
--
a
Rth2
Thermal resistance with 1" square footprint
--
&
a
Thermal Characteristics
8 Lead SOIC
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. (Tj = 25
o
C unless otherwise specified).
Symbol Parameter
Min.
Max.
Units
Test Conditions
Vout
Maximum output voltage
Vcc-50 Vcc+0.3
Voffset
Maximum logic ground to load ground offset Vcc-50 Vcc+0.3
Vin
Maximum Input voltage
-0.3
5.5
Iin, max
Maximum positive 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. permanent current
(1)
(rth = 125
o
C/W)
--
1.4
Isd
pulsed
Diode max. pulsed current
(1)
--
10
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=125
o
C/W)
--
1
W
Tj max.
Max. storage & operating junction temp.
-40
+150
Vcc max.
Maximum Vcc voltage
--
50
V
V
A
kV
o
C
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
35
VIH
High level input voltage
4
5.5
VIL
Low level input voltage
-0.3
0.9
Iout
Continuous output current
Tc=85
o
C (TAmbient = 85
o
C, Tj = 125
o
C, Rth = 100
o
C/W)
--
1.6
A
Rin
Recommended resistor in series with IN pin
4
6
Rdg
Recommended resistor in series with DG pin
10
20
V
k
IPS521G
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3
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Rds(on)
ON state resistance Tj = 25
o
C
--
80
100
@Tj=25
o
C
Rds(on)
ON state resistance @ Vcc = 6V
--
80
100
(Vcc=6V)
Rds(on)
ON state resistance Tj = 150
o
C
--
125
160
Vin = 5V, Iout = 5A
@Tj=150
o
C
Vcc oper. Operating voltage range
5.5
--
35
V
clamp 1
Vcc to OUT clamp voltage 1
50
55
--
Id = 10mA
(see Fig.1 & 2)
V
clamp 2
Vcc to OUT clamp voltage 2
--
56
65
Vf
Body diode forward voltage
--
0.9
1.2
Id = 2.5A, Vin = 0V
Icc off
Supply current when OFF
--
13
50
A
Vin = 0V, Vout = 0V
Icc on
Supply current when ON
--
0.6
2
mA
Vin = 5V
Icc ac
Ripple current when ON (AC RMS)
--
20
--
A
Vin = 5V
Vdgl
Low level diagnostic output voltage
--
0.4
--
V
Idg = 1.6 mA
Ioh
Output leakage current
--
50
120
Vout = 6V
Iol
Output leakage current
0
--
25
Vout = 0V
Idg
leakage
Diagnostic output leakage current
--
--
10
Vdg = 5.5V
Vih
IN high threshold voltage
--
2.2
3
Vil
IN low threshold voltage
1
1.9
--
Iin, on
On state IN positive current
--
70
200
A
Vin = 5V
In hyst.
Input hysteresis
0.1
0.25
0.5
V
Static Electrical Characteristics
(Tj = 25
o
C, Vcc = 14V unless otherwise specified.)
m
Vin = 5V, Iout = 5A
Id = Isd
(see Fig.1 & 2)
V
Vin = 5V, Iout = 2.5A
A
V
Switching Electrical Characteristics
Vcc = 14V, Resistive Load = 2.8
, T
j
= 25
o
C, (unless otherwise specified).
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Tdon
Turn-on delay time
a
10
40
Tr1
Rise time to Vout = Vcc - 5V
a
25
60
Tr2
Rise time Vcc - 5V to Vout = 90% of Vcc
--
130
200
dV/dt (on) Turn ON dV/dt
a
0.7
2
V/
s
Eon
Turn ON energy
--
1500
--
J
Tdoff
Turn-off delay time
--
35
70
Tf
Fall time to Vout = 10% of Vcc
--
16
50
dV/dt (off) Turn OFF dV/dt
a
0.9
3
V/
s
Eoff
Turn OFF energy
--
250
--
J
Tdiag
Vout to Vdiag propagation delay
--
5
15
s
See figure 6
See figure 3
s
s
See figure 4
IPS521G
4
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Lead Assignments
8 Lead SOIC
1
GND IN DG OUT
Vcc Vcc Vcc Vcc
Symbol Parameter
Min.
Typ.
Max. Units Test Conditions
Ilim
Internal current limit
7
10
14
A
Vout = 0V
Tsd+
Over-temp. positive going threshold
--
165
--
o
C
See fig. 2
Tsd-
Over-temp. negative going threshold
--
158
--
o
C
See fig. 2
V
sc
Short-circuit detection voltage (3)
2
3
4
V
See fig. 2
V
open load
Open load detection threshold
2
3
4
V
Protection Characteristics
(3) Referenced to Vcc
Functional Block Diagram
2. 2 V
2. 7 V
+
-
Level
shift
driver
Charge
pum p
10 A
VCC
IN
50 V
Ov er
Cu rr en t
li mi t
VO UT
GN D
DG
7 V
7 V
62 V
4 0
200 K
+
-
Op en l oad
3 V
-
+
3 V
Tj
158 C
te mp er atu re
165 C
Sh or t- cir cu it
All values are typical
IPS521G
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Figure 1 - Active clamp waveforms
Figure 2 - Protection timing diagram
Tsd+
(160 )
Vin
Iout
Ilim.
T
5 V
0 V
Tsd-
T shutdown
limiting
cycling
Ids
Out
Vin
T clamp
V clamp
( + Vcc )
( see Appl . Notes to evaluate power dissipation )
0 V
Iout
Figure 4 - Switching times definition (turn-off)
Vin
Vout
90%
10%
Td off
Tf
dV/dt off
Figure 3 - Switching times definition (turn-on)
Turn on energy with a resistive or an
inductive load
Vin
Vout
Vcc - 5V
90%
Vcc
10%
Td on
Tr 1
Tr 2
dV/dt on
Iout1
Iout2
Eon2
Resistive load
Inductive load
Eon1
E1(t)
E2 (t)
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