BTS 3160D Infineon Technologies, BTS 3160D Datasheet - Page 18

• Manufacturer Part Number: BTS 3160D
• Manufacturer: Infineon Technologies

Specifications of BTS 3160D

• Switch Type: Low Side
• Power Switch Family: BTS3160D
• Input Voltage: -0.3 to 5.3V
• Power Switch On Resistance: 8mOhm
• Output Current: 7.8A
• Number Of Outputs: Single
• Mounting: Surface Mount
• Supply Current: 1.6mA
• Package Type: TO-252
• Operating Temperature (min): -40C
• Operating Temperature (max): 150C
• Operating Temperature Classification: Automotive
• Pin Count: 4 +Tab
• Packages: PG-TO252-5
• Channels: 1.0
• Vds (max): 40.0 V
• Id(nom): 7.8 A
• Rds (on) (max): 10.0 mOhm
• Id(lim) (min): 70.0 A
• Lead Free Status / RoHS Status: Compliant

6.3
When switching off inductive loads with low-side switches, the Drain Source voltage V
potential, because the inductance intends to continue driving the current.
The BTS3160D is equipped with a voltage clamp mechanism that keeps the Drain-Source voltage V
level. See
Figure 15
Figure 16
While demagnetization of inductive loads, energy has to be dissipated in the BTS3160D. This energy can be
calculated with following equation:
Following equation simplifies under assumption of R
Datasheet
E
E
=
=
V
1
-- -
2
LI
DS(CL)
L
2
Figure 15
⋅



⋅
Inductive Output Clamp
Output Clamp
Switching an inductance
1
V
---------------------------------- - ln
–
bb
---------------------------------- -
V
bb
–
R
V
High
Low
V
V
–
Von
L
V
DAZ
bb
DS(CL)
for more details.
V
bb
IN
I
D
DS(CL)
⋅






1
–
---------------------------------- -
V
bb
R
–
L
V
⋅
DS(CL)
I
L



+
I
L
L
⋅
= 0
------
R
L
18
L
Overtemperature or
short circuit detected
Drain
GND
Smart Low Side Power Switch
t
t
t
HITFET - BTS3160D
OutputClamp.emf
Induc tiv eLoad.emf
D
Rev. 1.1, 2008-02-28
rises above battery
Power Stage
D
at a certain