A novel active feedback flyback with only 100-mV inductive overshoot for a standard low-voltage CMOS inductive load driver, in a single-chip controller for 73 relays in a POTS/ADSL splitter application

Author

Wouters, Jan F J ; Sevenhans, Jan ; Hoogenbemt, Stefaan Van ; Fernandez, Thierry ; Biggs, Jeff ; Das, Carl ; Dupont, Steven A M

Author_Institution

Interuniversity Microelectron. Centre, Leuven, Belgium

Volume

40

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

1541

Lastpage

1548

Abstract

This paper presents an inductive load driver. The circuit is realized in a standard low-voltage CMOS process: as the coil freewheels 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; low-power electronics; overcurrent protection; overvoltage protection; short-circuit currents; 100 mV; ADSL; ASIC; POTS; active feedback flyback; coil; driver circuits; inductive load driver; inductive overshoot; low-voltage CMOS; overcurrent protection; overvoltage protection; short-circuit protection; single-chip controller; splitter filter board; test access function; voltage slope control; CMOS process; Circuit testing; Clamps; Coils; Driver circuits; Feedback; Power supplies; Relays; Switching circuits; Voltage; CMOS; driver circuits; flyback; inductive load; low-side driver; overcurrent protection; overvoltage protection; short-circuit protection; slope control;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2005.847494

Filename

1458999