JPS6454785U - - Google Patents

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Publication number
JPS6454785U
JPS6454785U JP14880387U JP14880387U JPS6454785U JP S6454785 U JPS6454785 U JP S6454785U JP 14880387 U JP14880387 U JP 14880387U JP 14880387 U JP14880387 U JP 14880387U JP S6454785 U JPS6454785 U JP S6454785U
Authority
JP
Japan
Prior art keywords
pulse width
width control
dead time
control terminal
zener diode
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.)
Granted
Application number
JP14880387U
Other languages
Japanese (ja)
Other versions
JPH0545110Y2 (en
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 filed Critical
Priority to JP1987148803U priority Critical patent/JPH0545110Y2/ja
Publication of JPS6454785U publication Critical patent/JPS6454785U/ja
Application granted granted Critical
Publication of JPH0545110Y2 publication Critical patent/JPH0545110Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ａは本考案の一実施例の回路図、第１図
ｂは第１図ａに示す回路の起動信号とＤ・Ｔ端子
電位のタイムチヤート、第２図は従来のソフトス
タート回路の回路図、第３図は第２図に示す回路
の起動信号とＤ・Ｔ端子電位のタイムチヤートで
ある。 １：ＰＷＭ・ＩＣ電源、２：ＰＷＭ・ＩＣ、３
：コンデンサ、４：抵抗、５：抵抗、６：スイツ
チング素子、７：ツエナーダイオード、８：ダイ
オード、９：抵抗。 Figure 1a is a circuit diagram of an embodiment of the present invention, Figure 1b is a time chart of the activation signal and D/T terminal potential of the circuit shown in Figure 1a, and Figure 2 is a diagram of a conventional soft start circuit. The circuit diagram, FIG. 3, is a time chart of the activation signal and D/T terminal potentials of the circuit shown in FIG. 2. 1: PWM/IC power supply, 2: PWM/IC, 3
: Capacitor, 4: Resistor, 5: Resistor, 6: Switching element, 7: Zener diode, 8: Diode, 9: Resistor.

Claims (1)

【実用新案登録請求の範囲】 他励方式のパルス幅制御スイツチングレギユレ
ータのパルス幅制御ＩＣのデツトタイムコントロ
ール端子を利用したソフトスタート回路において
、 上記パルス幅制御ＩＣの電源と並列に抵抗及び
スイツチング素子よりなる直列回路を接続し、該
スイツチング素子と並列にツエナーダイオードを
接続すると共に、該ツエナーダイオードのカソー
ド側をパルス幅制御ＩＣのデツトタイムコントロ
ール端子及びデツトタイムコントロール端子に接
続されたコンデンサに接続することを特徴とする
パルス幅制御スイツチングレギユレータのソフト
スタート回路。[Claims for Utility Model Registration] In a soft start circuit using a dead time control terminal of a pulse width control IC of a separately excited pulse width control switching regulator, a resistor is connected in parallel with the power supply of the pulse width control IC. A series circuit consisting of a switching element is connected, a Zener diode is connected in parallel with the switching element, and the cathode side of the Zener diode is connected to a dead time control terminal of a pulse width control IC and a capacitor connected to the dead time control terminal. A soft start circuit for a pulse width control switching regulator.
JP1987148803U 1987-09-29 1987-09-29 Expired - Lifetime JPH0545110Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987148803U JPH0545110Y2 (en) 1987-09-29 1987-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987148803U JPH0545110Y2 (en) 1987-09-29 1987-09-29

Publications (2)

Publication Number Publication Date
JPS6454785U true JPS6454785U (en) 1989-04-04
JPH0545110Y2 JPH0545110Y2 (en) 1993-11-17

Family

ID=31420455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987148803U Expired - Lifetime JPH0545110Y2 (en) 1987-09-29 1987-09-29

Country Status (1)

Country Link
JP (1) JPH0545110Y2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523867U (en) * 1978-07-29 1980-02-15
JPS58103872A (en) * 1981-12-15 1983-06-21 Matsushita Electric Ind Co Ltd Power source
JPS59195985U (en) * 1983-06-03 1984-12-26 澤藤電機株式会社 Soft start circuit for high voltage power supply

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523867B2 (en) * 1971-12-27 1980-06-25

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523867U (en) * 1978-07-29 1980-02-15
JPS58103872A (en) * 1981-12-15 1983-06-21 Matsushita Electric Ind Co Ltd Power source
JPS59195985U (en) * 1983-06-03 1984-12-26 澤藤電機株式会社 Soft start circuit for high voltage power supply

Also Published As

Publication number Publication date
JPH0545110Y2 (en) 1993-11-17

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