Title :
A novel active feedback flyback [inductive load driver]
Author :
Wouters, Jan ; Sevenhans, Jan ; Van Hoogenbemt, Stefaan ; Fernandez, Thierry ; Biggs, Jeff ; Das, Carl ; Dupont, Steven
Author_Institution :
IMEC, Leuven, Belgium
Abstract :
This paper presents an inductive load driver. The circuit is realised in a standard low-voltage CMOS process. As the coil free-wheels when the driver is switched off, the circuit clamps the output voltage at 100 mV above the power supply. Hence no high-voltage technology or high-voltage tolerant circuit is required. 73 drivers are integrated in an ASIC, controlling 73 relays for a test access function on a POTS/ADSL splitter filter board. The driver also performs output voltage slope control and has an elegant, effective short-circuit protection.
Keywords :
CMOS integrated circuits; application specific integrated circuits; circuit feedback; driver circuits; power integrated circuits; relay control; voltage control; 30 mA; ASIC; POTS/ADSL splitter filter test access function; feedback loop stability; free-wheeling coil; inductive flyback handling; inductive load driver; low-side driver; low-voltage CMOS; output voltage clamping; output voltage slope control; relay control; short-circuit protection; CMOS process; CMOS technology; Circuit testing; Clamps; Coils; Driver circuits; Feedback; Power supplies; Switching circuits; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2004. ESSCIRC 2004. Proceeding of the 30th European
Print_ISBN :
0-7803-8480-6
DOI :
10.1109/ESSCIR.2004.1356702
