JPS5687119A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPS5687119A
JPS5687119A JP16502179A JP16502179A JPS5687119A JP S5687119 A JPS5687119 A JP S5687119A JP 16502179 A JP16502179 A JP 16502179A JP 16502179 A JP16502179 A JP 16502179A JP S5687119 A JPS5687119 A JP S5687119A
Authority
JP
Japan
Prior art keywords
circuit
voltage
current
output
feedback
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16502179A
Other languages
Japanese (ja)
Inventor
Yoshihiko Kizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16502179A priority Critical patent/JPS5687119A/en
Publication of JPS5687119A publication Critical patent/JPS5687119A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To set the output voltage of other circuit to the regular voltage or higher even though the load of the output circuit in a feedback side circuit becomes zero or light with other output voltage turned to the regulator voltage or lower, by flowing the bleeder current according to the lowered voltage to the feedback side circuit.
CONSTITUTION: The bleeder consisting of the resistance RD, NPN transistor TRQ1 and load L1 is provided at the output terminal of the output circuit A1 which performs a voltage feedback. On the other hand, the voltage comparing circuit 7 is provided to the output circuit A2 which performs no voltage feedback to detect the change of the output voltage of the circuit A1. When the output voltage V2 of the circuit A2 becomes lower than the reference voltage VRE, the voltage corresponding to the lowered voltage is delivered from the circuit 7. Thus the bleeder current Id flow to the feedback side circuit. As a result, the current Id flows when the output circuit current I1 of the circuit A1 becomes lower than the minimum current ILO to set the current I1 to the current I1 to the current ILO or higher. Accordingly, the output voltage of the circuit A2 can be set to the regular level or higher even though the load of the circuit A1 becomes zero.
COPYRIGHT: (C)1981,JPO&Japio
JP16502179A 1979-12-19 1979-12-19 Switching regulator Pending JPS5687119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16502179A JPS5687119A (en) 1979-12-19 1979-12-19 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16502179A JPS5687119A (en) 1979-12-19 1979-12-19 Switching regulator

Publications (1)

Publication Number Publication Date
JPS5687119A true JPS5687119A (en) 1981-07-15

Family

ID=15804329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16502179A Pending JPS5687119A (en) 1979-12-19 1979-12-19 Switching regulator

Country Status (1)

Country Link
JP (1) JPS5687119A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046770A (en) * 1983-08-24 1985-03-13 Nippon Chemicon Corp Power source
US4521842A (en) * 1982-07-28 1985-06-04 Reliance Electric Company Circuit for controlling the volt-ampere characteristic of a load sharing power supply at no load and for inserting a preload
JPS60177682U (en) * 1984-05-01 1985-11-26 株式会社リコー Switching type stabilized power supply
JPH03198655A (en) * 1989-12-25 1991-08-29 Fuji Elelctrochem Co Ltd Multioutput switching power supply

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521842A (en) * 1982-07-28 1985-06-04 Reliance Electric Company Circuit for controlling the volt-ampere characteristic of a load sharing power supply at no load and for inserting a preload
JPS6046770A (en) * 1983-08-24 1985-03-13 Nippon Chemicon Corp Power source
JPS60177682U (en) * 1984-05-01 1985-11-26 株式会社リコー Switching type stabilized power supply
JPH03198655A (en) * 1989-12-25 1991-08-29 Fuji Elelctrochem Co Ltd Multioutput switching power supply

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