Title :
A method for overvoltage protection of a motor driver IC
Author :
Trafton, Fredrick ; Ziemer, Kevin
Author_Institution :
Storage Products Group, Texas Instruments Inc., Dallas, TX, USA
Abstract :
This paper describes a circuit technique that allows semiconductor power devices to be safely used in an IC whose worst-case voltage requirements exceed the breakdown voltages of the power devices. The supply voltage is sensed and the circuit is placed into a non-operational but safe mode of operation (Turtle Mode™). Device data is shown for a hard disk drive servo IC implementing this technique.
Keywords :
disc drives; driver circuits; hard discs; overvoltage protection; power integrated circuits; power semiconductor devices; semiconductor device breakdown; breakdown voltages; circuit technique; hard disk drive servo IC; motor driver IC; overvoltage protection; safe mode operation; semiconductor power devices; worst-case voltage requirements; Clamps; Costs; Hard disks; Induction motors; Power supplies; Power system protection; Scanning probe microscopy; Servomechanisms; Servomotors; Voltage control;
Conference_Titel :
Power Semiconductor Devices and ICs, 2005. Proceedings. ISPSD '05. The 17th International Symposium on
Print_ISBN :
0-7803-8890-9
DOI :
10.1109/ISPSD.2005.1487966
