BTS7040-1EPA
PROFET™ +2 12V
Application Information
10.2
External Components
Table 23 Suggested Component values
Reference
Value
Purpose
RIN
4.7 kΩ
Protection of the microcontroller during Overvoltage and Reverse Polarity
Necessary to switch OFF BTS7040-1EPA output during Loss of Ground
RDEN
RPD
4.7 kΩ
47 kΩ
Protection of the microcontroller during Overvoltage and Reverse Polarity
Necessary to switch OFF BTS7040-1EPA output during Loss of Ground
Output polarization (pull-down)
Ensures polarization of BTS7040-1EPA outputs to distinguish between
Open Load and Short to VS in OFF Diagnosis
ROL
1.5 kΩ
Output polarization (pull-up)
Ensures polarization of BTS7040-1EPA output during Open Load in OFF
diagnosis
COUT
T1
10 nF
Protection of BTS7040-1EPA output during ESD events and BCI
Switch the battery voltage for Open Load in OFF diagnosis
Filtering of voltage spikes on the battery line
BC 807
100 nF
47 nF
CVS
CVSGND
Buffer capacitor for fast transient
See Table 5 (P_4.3.0.7) for the boundary conditions
A placeholder on PCB layout is recommended
DZ2
33 V TVS Diode Transient Voltage Suppressor diode
Protection during Overvoltage and in case of Loss of Battery while driving
an inductive load
CVS2
–
Filtering / buffer capacitor located at VBAT connector
SENSE resistor
RSENSE
RIS_PROT
1.2 kΩ
4.7 kΩ
Protection during Overvoltage, Reverse Polarity, Loss of Ground
Value to be tuned according to microcontroller specifications
DZ1
7 V Z-Diode
Protection of microcontroller during Overvoltage
RADC
4.7 kΩ
Protection of microcontroller ADC input during Overvoltage, Reverse
Polarity, Loss of Ground
Value to be tuned according to microcontroller specifications
CSENSE
RGND
220 pF
Sense signal filtering
A time constant (RADC * CSENSE) longer than 1 µs is recommended
47 Ω
Protection in case of Overvoltage and Loss of Battery while driving
inductive loads
10.3
Further Application Information
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Please contact us for information regarding the Pin FMEA
For further information you may contact http://www.infineon.com/
Data Sheet
54
Rev. 1.10
2020-12-14
INFINEON [ Infineon ]
