The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2000
Filed:
Jan. 27, 2000
TDK Corporation, Tokyo, JP;
Abstract
A switching power supply capable of executing output voltage stabilizing control with a high degree of reliability even when the DC output voltage is at DC 2V or lower. A DC--DC converter unit 1 converts a DC input voltage Vin to DC through switching and outputs a DC output voltage Vo for a load 10 through output lines 71 and 72. An auxiliary power unit 3, which is electrically linked to the DC--DC converter unit 1, outputs a DC voltage Va through an auxiliary source output line 30 having a potential that is negative relative to the potential at the lower-potential output line 72. An output voltage detection unit 2, connected between the higher-potential output line 71 and the auxiliary source output line 30, detects a DC voltage (Vo+Va) manifesting between them and provides the detection signal to a control unit 4 via a photocoupler 9. The control unit 4 implements output voltage stabilizing control on the DC--DC converter unit 1.