JPS6454785U - - Google Patents
Info
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000003079 width control Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
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)
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.
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)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523867B2 (en) * | 1971-12-27 | 1980-06-25 |
-
1987
- 1987-09-29 JP JP1987148803U patent/JPH0545110Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| 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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