High power 8-bit phase-shift high-reliability driver for avionic applications

The TLC6A598 device is a monolithic, high-voltage,

high-current power 8-bit shift register designed for use in systems that require relatively

high load power, such as LEDs.

The device contains a built-in voltage clamp on

the outputs for inductive transient protection.

Power driver applications include relays,

solenoids, and other high-current or high-voltage

loads. Each open-drain DMOS transistor features an

independent chopping current-limiting circuit to

prevent damage in the case of a short circuit.

This device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit

D-type storage register. Outputs are low-side, open-drain DMOS transistors with output

ratings of 50 V and 350-mA continuous sink-current capabilities. A built-in load open or

load short diagnostic mechanism provides enhanced safety protection. The device provides a

cycle redundancy check to verify register values in the shift registers. In read-back mode,

the device provides 6 bits of the CRC remainder. The MCU can read back the CRC remainder and

check if the remainder is correct to determine whether the communication loop between MCU

and device is good.

The TLC6A598 characterization is for operation

over the operating ambient temperature range of −55°C to 125°C.