The design of an automotive low drop out regulator IC utilizing a depletion mode high voltage DMOS pass element

Author

Wrathall, Robert ; Franck, Stephen

Author_Institution

Siliconix Inc., Santa Clara, CA, USA

fYear

1994

fDate

20-21 Oct 1994

Firstpage

17

Lastpage

22

Abstract

In this paper the design of a new low dropout voltage regulator utilizing a high voltage depletion mode NMOS device as a pass element is described. A novel method of compensation is utilized which allows the circuit to be stable over a wide range of output capacitance and ESR. A watchdog timer is included with this circuit. The regulator is capable of sourcing 500 ma in regulation but is limited by forward drop and power dissipation

Keywords

MIS devices; MOS integrated circuits; automotive electronics; compensation; power integrated circuits; timing circuits; voltage regulators; automotive low drop out regulator IC; band gap reference; compensation; depletion mode high voltage DMOS pass element; error amplifier; forward drop; high voltage depletion mode NMOS device; power dissipation; watchdog timer; Automotive engineering; Circuits; Feedback amplifiers; Frequency; Impedance; Low voltage; MOS devices; Power dissipation; Regulators; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics in Transportation, 1994. [Proceedings]

Conference_Location

Dearborn, MI

Print_ISBN

0-7803-1839-0

Type

conf

DOI

10.1109/PET.1994.572351

Filename

572351