TLE 6208-3 G

Data Sheet

5

2001-05-10

1.5

Circuit Description

Figure 2 shows a block schematic diagram of the module. There are 3 halfbridge drivers

on the right-hand side. An HS driver and an LS driver are combined to form a halfbridge

driver in each case. The drivers communicate via the internal data bus with the logic and

the other control and monitoring functions: undervoltage (UV), overvoltage (OV),

overtemperature (TSD), charge pump and fault detect.

Two connection interfaces are provided for supply to the module: All power drivers are

connected to the supply voltage

V

These are monitored by overvoltage and

undervoltage comparators with hysteresis, so that the correct function can be checked

in the application at any time.

The logic is supplied by the

V

generated Power-On Reset (POR) to initialize the module at power-on. The advantage

of this system is that information stored in the logic remains intact in the event of short-

term failures in the supply voltage

V

following

V

information is stored, and can be read out via the interface. The same logically applies

for overvoltage. “Interference spikes” on

V

The situation is different in the case of undervoltage on the

V

occurs, then the internally stored data is deleted, and the output levels are switched to

high-impedance status (tristate). The module is initialized by

V

CC

following restart

(Power-On Reset = POR).

read in via the DI data input, and this is synchronized with the clock input CLK. The status

Protocol

). It is also possible to connect two TLE 6208-3 G in a daisy chain configuration.

The DO data output of one device is connected with the DI data input of the second

device. In this configuration these two devices are controlled with a single CSN chip

select and using a 32-bit wide control word.

The transmission cycle begins when the chip is selected with the CSN input (H to L). If

the CSN input changes from L to H then the word which has been read in becomes the

control word. The DO output switches to tristate status at this point, thereby releasing the

DO bus circuit for other uses.

The INH inhibit input can be used to cut off the complete module. This reduces the

current consumption to just a few

µA, and results in the loss of any data stored. The

output levels are switched to tristate status. The module is reinitialized with the internally

generated POR (Power-On Reset) at restart.

This feature allows the use of this module in battery-operated applications (vehicle body

control applications).