HITFET
=
BTS 149
Smart Lowside Power Switch
Features
•
Logic Level Input
•
Input Protection (ESD)
•=Thermal
shutdown with latch
•
Overload protection
•
Short circuit protection
•
Overvoltage protection
•
Current
Product Summary
Drain source voltage
On-state resistance
Current limit
Nominal load current
Clamping energy
V
DS
R
DS(on)
I
D(lim)
I
D(ISO)
E
AS
60
18
30
19
V
mΩ
A
A
6000 mJ
limitation
•
Status feedback with external input resistor
•
Analog driving possible
Application
•
All kinds of resistive, inductive and capacitive loads in switching or
linear applications
•
µC compatible power switch for 12 V and 24 V DC applications
•
Replaces electromechanical relays and discrete circuits
General Description
N channel vertical power FET in Smart SIPMOS
chip on chip tech-
nology. Fully protected by embedded protected functions.
V bb
+
LOAD
M
D rain
2
1
IN
dv /d t
lim ita tio n
C u rre n t
lim ita tio n
O ve rvoltag e
p rotection
ESD
O v erloa d
pro te ctio n
O ve r-
te m pe rature
p ro te ctio n
S ho rt c ircu it
S h ort circ uit
p rotection
p ro te ctio n
S o u rce
3
H IT F E T
Page 1
19.05.2000
BTS 149
Maximum Ratings at Tj = 25 °C unless otherwise specified
Parameter
Drain source voltage
Drain source voltage for short circuit protection
Continuous input current
1)
-0.2V
≤
V
IN
≤
10V
V
IN
< -0.2V or
V
IN
> 10V
Operating temperature
Storage temperature
Power dissipation
T
C
= 25 °C
Unclamped single pulse inductive energy
I
D(ISO)
= 19 A
Electrostatic discharge
voltage
(Human Body Model)
V
ESD
according to MIL STD 883D, method 3015.7 and
EOS/ESD assn. standard S5.1 - 1993
Load dump protection
V
LoadDump2)
=
V
A
+
V
S
V
IN
=low or high;
V
A
=13.5 V
t
d
= 400 ms,
R
I
= 2
Ω,
I
D
=0,5*19A
t
d
= 400 ms,
R
I
= 2
Ω,
I
D
= 19A
DIN humidity category, DIN 40 040
IEC climatic category; DIN IEC 68-1
V
LD
110
92
E
40/150/56
3000
V
E
AS
6000
mJ
T
j
T
stg
P
tot
Symbol
V
DS
V
DS(SC)
I
IN
no limit
|
I
IN
|
≤
2
- 40 ... +150
- 55 ... +150
178
W
°C
Value
60
32
mA
Unit
V
Thermal resistance
junction - case:
junction - ambient:
SMD version, device on PCB:
3)
R
thJC
R
thJA
R
thJA
0.7
75
45
K/W
1In case of thermal shutdown a minimum sensor holding current of 500 µA has to be guaranteed (see also page 3).
2
V
Loaddump is setup without the DUT connected to the generator per ISO 7637-1 and DIN 40839
3 Device on 50mm*50mm*1.5mm epoxy PCB FR4 with 6cm 2 (one layer, 70µm thick) copper area for Drain connection.
PCB mounted vertical without blown air.
Page 2
19.05.2000
BTS 149
Electrical Characteristics
Parameter
at T
j
=25°C, unless otherwise specified
Characteristics
Drain source clamp voltage
T
j
= - 40 ...+ 150°C,
I
D
= 10 mA
Off state drain current
V
DS
= 32 V,
T
j
= -40...+150 °C,
V
IN
= 0 V
Input threshold voltage
I
D
= 3,9 mA
Input current - normal operation,
I
D
<I
D(lim)
:
V
IN
= 10 V
V
IN
= 10 V
Input current - after thermal shutdown,
I
D
=0 A:
V
IN
= 10 V
Input holding current after thermal shutdown
1)
T
j
= 25 °C
T
j
= 150 °C
On-state resistance
V
IN
= 5 V,
I
D
= 19 A,
T
j
= 25 °C
V
IN
= 5 V,
I
D
= 19 A,
T
j
= 150 °C
On-state resistance
V
IN
= 10 V,
I
D
= 19 A,
T
j
= 25 °C
V
IN
= 10 V,
I
D
= 19 A,
T
j
= 150 °C
Nominal load current (ISO 10483)
V
IN
= 10 V,
V
DS
= 0.5 V,
T
C
= 85 °C
I
D(ISO)
R
DS(on)
-
-
19
14
25
18
36
A
R
DS(on)
-
-
18
30
22
44
I
IN(3)
I
IN(H)
500
300
-
-
-
-
mΩ
1500
3000
6000
I
IN(1)
-
-
-
400
100
1000
µA
V
IN(th)
1.3
1.7
2.2
V
V
DS(AZ)
I
DSS
60
-
-
-
73
25
V
µA
Symbol
min.
Values
typ.
max.
Unit
Input current - current limitation mode,
I
D
=I
D(lim)
:
I
IN(2)
1If the input current is limited by external components, low drain currents can flow and heat the device.
Auto restart behaviour can occur.
Page 3
19.05.2000
BTS 149
Electrical Characteristics
Parameter
at T
j
=25°C, unless otherwise specified
Characteristics
Initial peak short circuit current limit
V
IN
= 10 V,
V
DS
= 12 V
Current limit
1)
V
IN
= 10 V,
V
DS
= 12 V,
t
m
= 350 µs,
T
j
= -40...+150 °C
Dynamic Characteristics
Turn-on time
Turn-off time
Slew rate on
Slew rate off
V
IN
to 90%
I
D
:
V
IN
to 10%
I
D
:
70 to 50%
V
bb
:
t
on
t
off
-dV
DS
/dt
on
dV
DS
/dt
off
-
-
-
-
40
70
1
1
100
170
3
3
V/µs
µs
R
L
= 1
Ω,
V
IN
= 0 to 10 V,
V
bb
= 12 V
R
L
= 1
Ω,
V
IN
= 10 to 0 V,
V
bb
= 12 V
R
L
= 1
Ω,
V
IN
= 0 to 10 V,
V
bb
= 12 V
50 to 70%
V
bb
:
R
L
= 1
Ω,
V
IN
= 10 to 0 V,
V
bb
= 12 V
I
D(lim)
30
40
55
I
D(SCp)
-
130
-
A
Symbol
min.
Values
typ.
max.
Unit
Protection Functions
Thermal overload trip temperature
Unclamped single pulse inductive energy
I
D
= 19 A,
T
j
= 25 °C,
V
bb
= 32 V
I
D
= 19 A,
T
j
= 150 °C,
V
bb
= 32 V
T
jt
E
AS
6000
1800
-
-
-
-
150
165
-
°C
mJ
Inverse Diode
Inverse diode forward voltage
I
F
= 5*19A,
t
m
= 300
µS,
V
IN
= 0 V
V
SD
-
1.1
-
V
1Device switched on into existing short circuit (see diagram Determination of I D(lim)). If the device is in on condition
and a short circuit occurs, these values might be exceeded for max. 50 µs.
Page 4
19.05.2000
BTS 149
Block Diagramm
Terms
Inductive and overvoltage output clamp
D
RL
I IN
1
IN
HITFET
S
3
2
ID
VDS Vbb
V
Z
D
S
HITFET
VIN
Short circuit behaviour
Input circuit (ESD protection)
V IN
I D(SCp)
IN
ID
ESD-ZD
I
Source
I D(Lim)
ESD zener diodes are not designed
for DC current > 2 mA @
V
IN
>10V.
t0
tm
t1
t2
t0:
Turn on into a short circuit
tm: Measurementpoint for
I
D(lim)
t1: Activation of the fast temperature sensor and
t2:
regulation of the drain current to a level where
the junction temperature remains constant.
Thermal shutdown caused by the second
temperature sensor, achieved by an
integrating measurement.
Page 5
19.05.2000
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