TLE7241E Datasheet, PDF (66/71 Pages) Infineon Technologies AG – Dual Channel Constant Current Control Solenoid Driver

TLE 7241E
6
Application
Application
VPWR
+5V
Rbat (2)
Cbat
(4)
2.5V ref
Cref
Cvdd
+5V or 3.3V
VDD
BAT
REF
Cout1(3)
OUT1
VSO
NEG1
Cso
Rso
(5)
POS1
PGND1
Cng1
(3)
Cps1
(3)
SO _TLE7241
μController
Tri-Core
TC17XX
Rdft (1).
DEFAULT
SI
SCK
CSB
TEST
OUT2
Cout2 (3)
NEG2
POS2
PGND2
GND
Cng2
(3)
Cps2
(3)
VPWR/
RECIRC
Rsns1
SOL1
Csol1
VPWR/
RECIRC
Rsns2
SOL2
Csol2
Figure 30 Application Circuit
Note: This is a very simplified example of an application circuit. The function must be
verified in the real application
1. Recommended for applications with microcontroller I/O voltage levels less than
5.0 V. The resistor will limit the microcontroller input current when the adjacent pins
DEFAULT and V_DD are shorted together.
2. Required for applications that do not provide a reverse battery protected BAT supply.
R_BAT may also be required to limit the BAT pin current during BAT voltage transient
events (e. g. ISO pulses).
3. May be required for module level compliance with EMC specifications, but they are
not required for TLE7241 functionality or stability.
4. Connect to the REF pin directly to GND to enable the internal 2.5 V voltage reference.
5. Optional. Defines SO signal voltage when the SO pin has failed as an open circuit.
Note: In case of an unused channel, the OUTx, NEGx, and POSx pins should be
connected together.
Data Sheet
66
Rev. 1.1, 2009-01-19