Datasheet

TMC8460-BI Datasheet (V1.00 / 2016-Sep-01)

6.9.13 Emergency Switch Input Off-State

The emergency switch input MFC_nES of the TMC8460-BI can be configured to disable the MOSFET power

stage immediately, e.g., under control of an external over current comparator (or similar trigger).

nES is thereby used as external trigger. It is low active and contains an internal pull down resistor. For

normal operation it must be actively pulled high externally.

When pulled to ground, MFC_nES terminates the actual PWM cycle and brings the low side and high

side gate outputs into off-state. The off-state is defined by the PWM_POLARITIES register using bits 0

(low sides) and bit 1 (high sides).

PWM_POLARITIES(0)

= 0  0 = off / 1 = on

PWM_POLARITIES(0)

= 1  1 = off / 0 = on