TDA5241 Datasheet, PDF (16/19 Pages) NXP Semiconductors – Brushless DC motor drive circuit

Philips
Semiconductors
Brushless DC motor drive circuit
Product specification
TDA5241
RELIABILITY
It is necessary to protect high current circuits and the output stages are protected in two ways:
.Current limiting of the 'lower' output transistors. The 'upper' output transistors use the same base current as the
conducting 'lower' transistor (+15%). This means that the current to and from the output stages is limited.
.Thermal protection of the six output transistors is achieved by each transistor having a thermal sensor that is active
when the transistor is switched on. The transistors are switched off when the local temperature becomes too high.
March 1997
16/19