TLE7234E Infineon Technologies, TLE7234E Datasheet - Page 16

• Manufacturer Part Number: TLE7234E
• Description: IC DRIVER SPI 8CH HS/LS 24-SSOP
• Manufacturer: Infineon Technologies
• Type: High Side/Low Side Driverr

Specifications of TLE7234E

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 900 mOhm, 1.6 Ohm
• Current - Peak Output: 1A
• Voltage - Supply: 9 V ~ 16 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 24-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SP000297861

6.3
When switching off inductive loads with low-side switches, the potential at pin OUT rises to
because the inductance intends to continue driving the current. For the high-side channels, the potential at pin
OUT drops below ground potential to
device, see
clamping energy
Figure 5
Maximum Load Inductance
During demagnetization of inductive loads, energy has to be dissipated in the TLE7234E. This energy can be
calculated with following equations:
These equations simplify under the assumption of
The maximum energy, which is converted into heat, is limited by the thermal design of the component.
Data Sheet
E
E
E
E
=
=
=
=
V
(
1
-- -
2
1
-- -
2
V
LI
LI
D(CL)
bb
L
L
–
2
2
V
⋅
⋅
⋅






S(CL)
Inductive Output Clamp
Figure 5
Output Clamp Implementation
1
1
V
------------------------------- - ln
–
–
bb
V
------------------------------- -
V
--------------- -
V
bb
)
–
E
V
R
bb
S(CL)
⋅
high side
channel
V
AR
bb
L
V
–
D(CL)
V
V
--------------- - ln
V
DS(CL)
see electrical characteristics
bb
V
S(CL)



R
S(CL)
for details. Nevertheless, the maximum allowed load inductance is limited by the max.
D(CL)
L
⋅
⋅
GND






1



–
1
------------------------------- -
V
–
bb
R
--------------- -
V
R
S(CL)
L
–
L
⋅
V
⋅
I
I
L
D(CL)
L



VBB
OUT
V
+
S(CL)
I



L
+
. The voltage clamping is necessary to prevent destruction of the
V
⋅
I
I
S
S
------
R
L
L
I
L
L
⋅
“E
R
------
R
L
L
L
L,
R
AR
= 0:
L
16
” on Page
High-side
Low-side
low side
channel
High-side
Low-side
V
DS(CL)
10.
GND
OUT
V
I
D
D
I
L
OutputClamp.emf
Rev. 1.0, 2008-10-30
L,
R
L
V
DS(CL)
Power Stages
TLE7234E
potential,
(1)
(2)
(3)
(4)