Preliminary Datasheet TLE6288 R

Vp2

Page 4

13.01.2003

current limitation), Overtemperature, ESD at all pins and overvoltage at the power outputs (zener

clamping).

Output Stage Control: Parallel Control and SPI Control

A Boolean operation (either AND or OR) is performed on each of the parallel inputs IN 1..6 and respec-

tive SPI data bits, in order to determine the states of the respective outputs. The type of Boolean op-

eration performed is programmed via the serial interface. Both, parallel inputs and respective SPI da-

tabits are high active.

Truth table

parallel

Input

SPI

Bit

Output

OR

Output

AND

0

0

OFF

OFF

0

1

ON

OFF

1

0

ON

OFF

1

1

ON

ON

Each output is independently controlled by an output latch and a common reset line FSIN, which dis-

ables all outputs. A logic high input ‘data bit’ turns the respective output channel ON, a logic low ‘data

bit’ turns it OFF.

Overtemperature Behavior:

Each channel has an overtemperature sensor and is individually protected against overtemperature.

As soon as overtemperature occurs the channel is immediately turned off. In this case here are two

different behavoirs of the affected channel that can be selected by SPI (for all channels generally).

Autorestart: as long as the input signals of the channel remains on (e.g. parallel input high) the chan-

nel turns automatically on again after cooling down.

Latching: After overtemperature shutdown the channel stays off until the this ovetemperature latch is

reset by a new L H transition of the input signal.

Note: These overtemperature sensors of the channels are only active if the channel is turned on.

An additional overtemperature sensor is located in the logic of the device. I monitors permanently the

IC temperature. As soon as the IC temperature reaches a specified level an overtemperature fault will

be indicated.

1

Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are

OR

AND

Output

Driver

IN 1…6

Serial Input bits 6 -11 of command

„Channels on / off „