Key Features

The AS8410 builds up a complete PWM DC Motor current regulation loop with an external n-channel power FET. A full diagnosis of motor failures with stand-alone failure handling procedures is integrated.

One of the most important features of this ASSP namely in automotive applications is the slew rate regulated switching of the external power FET. This technology enables two features of the DC motor regulator, which was up to now impossible to realise at the same time:

? An excellent EMC behaviour (very low RF emission in the whole frequency range)

? A high power efficiency > 95 (fall / rise time

A short overview of the main features of the AS8410 is given here below:

Main properties:

? Complete PWM DC motor regulator with an external power FET

? Single voltage supply in the range VB = 6 V … 35 V (Vpumpmax = 45 V)

? Analogue motor current regulation loop (two modes: set value as digital duty ratio of a low frequency (e.g. 10 Hz) or as an analogue voltage in the range Vin = 0 … 5 V)

? High power efficiency of the whole regulator module (> 95 )

? Low RF emission in the whole frequency range

? Fully protected, analogue / digital failure handling procedures (see below: Security functions)

? Simple programming possibilities for different classes of DC motors and different operating modes (set value input, over temperature-handling procedure)

? Applicable directly on the automotive board supply battery (burst and surge)

? Automatic sleep mode controlled by the set value