JPS5482051A - Smooth start circuit for switching regulators - Google Patents

Smooth start circuit for switching regulators

Info

Publication number
JPS5482051A
JPS5482051A JP14822677A JP14822677A JPS5482051A JP S5482051 A JPS5482051 A JP S5482051A JP 14822677 A JP14822677 A JP 14822677A JP 14822677 A JP14822677 A JP 14822677A JP S5482051 A JPS5482051 A JP S5482051A
Authority
JP
Japan
Prior art keywords
voltage
resistors
output voltage
output
circuit
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
JP14822677A
Other languages
Japanese (ja)
Inventor
Junichiro Miyamoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14822677A priority Critical patent/JPS5482051A/en
Publication of JPS5482051A publication Critical patent/JPS5482051A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dc-Dc Converters (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE: To enable smooth start and prevent a bad effect to the external by setting up a minimum of two voltage spliting resistors and clamping resistors each, one switch, and a charge and dischange circuit in the error detection section of a power supply control section.
CONSTITUTION: Switching elements are turned ON and OFF by the pulse width modulated output corresponding to the deviation between output voltage Eo and reference voltage Vref and the output voltage Eo is stabilized. The output voltage detection circuit for this case consists of two resistors R3 and R4, clamping diodes D1 and D2, and a charge and discharge capacitor C1. The delta wave voltage overlapping with the arbitrary reference voltage Vref and the terminal voltage eb of the capacitor C1 are compared by a comparison circuit 14 as shown in (a) at the start time when a switch Q1 closes and the switching element is turned ON and OFF by the pulse width modulated output as shown in (b), then output voltage slow rises as shown in (c).
COPYRIGHT: (C)1979,JPO&Japio
JP14822677A 1977-12-12 1977-12-12 Smooth start circuit for switching regulators Pending JPS5482051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14822677A JPS5482051A (en) 1977-12-12 1977-12-12 Smooth start circuit for switching regulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14822677A JPS5482051A (en) 1977-12-12 1977-12-12 Smooth start circuit for switching regulators

Publications (1)

Publication Number Publication Date
JPS5482051A true JPS5482051A (en) 1979-06-29

Family

ID=15448088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14822677A Pending JPS5482051A (en) 1977-12-12 1977-12-12 Smooth start circuit for switching regulators

Country Status (1)

Country Link
JP (1) JPS5482051A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151876A (en) * 1982-03-03 1983-09-09 Hitachi Ltd Control method for pulse width modulation inverter
JPS63154274A (en) * 1986-12-16 1988-06-27 Miyachi Electric Co Inverter type resistance welding machine
JPH02273072A (en) * 1989-03-02 1990-11-07 Philips Gloeilampenfab:Nv Electric source circuit
US7049879B2 (en) 2002-07-12 2006-05-23 Denso Corporation Power supply circuit with control of rise characteristics of output voltage
JP2011239647A (en) * 2010-05-13 2011-11-24 Denso Corp Power converter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151876A (en) * 1982-03-03 1983-09-09 Hitachi Ltd Control method for pulse width modulation inverter
JPS63154274A (en) * 1986-12-16 1988-06-27 Miyachi Electric Co Inverter type resistance welding machine
JPH02273072A (en) * 1989-03-02 1990-11-07 Philips Gloeilampenfab:Nv Electric source circuit
US7049879B2 (en) 2002-07-12 2006-05-23 Denso Corporation Power supply circuit with control of rise characteristics of output voltage
JP2011239647A (en) * 2010-05-13 2011-11-24 Denso Corp Power converter

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