Data Sheet

35

Rev. 1.0, 2008-10-30

TLE7238GS

Application Information

11

Application Information

Note: The following information is given as a hint for the implementation of the device only and shall not be

regarded as a description or warranty of a certain functionality, condition or quality of the device.

Figure 14 shows a simplified application circuit. Vdd need to be externally reverse polarity protected.

Figure 14

Application Diagram

Note: This is a very simplified example of an application circuit. The function must be verified in the real application.

The circuit above shows a example of using this device in a automotive target application.

D1,C1 are used for blocking negative disturbances from Battery supply.

D2 is optional for loss of battery if no other circuit on this battery feed can limit the voltage to the negative max.

rating of the device (-16 V) .

D3 is limiting the battery voltage below the maximum rated positive voltage of the

C2 is for EMC and to stabilize the digital driver, recommended value is 47nF.

There are no resistors to the µC needed due to the internal reverse polarity protection.

For further information you may contact http://www.infineon.com/

SO

SCLK

SI

CS

GND

VDD

Application_LGS.emf

OUT0

OUT1

OUT6

OUT7

Vbat

Lowside

Loads

SPI uC

PWM

C1

C2

VBB

Highside

Loads

OUT2

OUT3

D4

S4

D5

S5

PWM

LHO

IN2

IN1

LHI

SUB

Cooling area

D1

D2

D3