JPH02237461A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPH02237461A
JPH02237461A JP5537789A JP5537789A JPH02237461A JP H02237461 A JPH02237461 A JP H02237461A JP 5537789 A JP5537789 A JP 5537789A JP 5537789 A JP5537789 A JP 5537789A JP H02237461 A JPH02237461 A JP H02237461A
Authority
JP
Japan
Prior art keywords
circuit section
terminal
inverting
output
chopper 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
JP5537789A
Other languages
Japanese (ja)
Inventor
Yasuro Tezuka
手塚　泰朗
Youshichirou Endou
遠藤　洋七郎
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
NEC Miyagi Ltd
Original Assignee
NEC Corp
NEC Miyagi 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, NEC Miyagi Ltd filed Critical NEC Corp
Priority to JP5537789A priority Critical patent/JPH02237461A/en
Publication of JPH02237461A publication Critical patent/JPH02237461A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To suppress increase of size due to increase of the number of parts by providing a step-up functional section and an inverting functional section thereby facilitating production of output voltage having inverted input voltage polarity. CONSTITUTION:A step-up chopper circuit section 3 comprises an inductor L1, a switching transistor Q1, a commutation diode D1 and a capacitor C1, where one terminal of an input power source 1 is connected through L1, D1 with an inverting chopper circuit section 4 while the other terminal thereof is connected with the emitter of Q1 and one terminal of C1, the collector of Q1 is connected with the joint of L1 and D1, + terminal of C1 is connected with the output of D1, and the base of Q1 is connected with a PWM control circuit section 2. By such arrangement, an output voltage having inverted input voltage polarity can be obtained easily without increasing the number of parts and the scale of the circuitry.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はスイッチングレギュレー夕に関し、特に１次，
２次間の絶縁を必要としないチヨ・ｙＢ一方式スイッチ
ングレギュレー夕において絶対値が入力電圧値より大き
く且つ入力電圧の極性を反転した出力を得るスイッチン
グレギュレータに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a switching regulator, and particularly to a switching regulator.
The present invention relates to a Chiyo-yB one-way switching regulator that does not require insulation between secondary voltages, and which obtains an output whose absolute value is larger than the input voltage value and whose polarity is inverted from the input voltage.

〔従来の技術〕[Conventional technology]

チョッパー方式スイッチングレギュレー夕は変圧器を用
いていないので小型化に適し、スイッチング方式により
シリーズレギュレー夕より効率がよいという特長をもっ
ており、ステップダウン，ステップアップ及びインバー
テイングの各回路をＰＷＭ制御にて実現できるが、イン
バーテイング機能においては出力絶対値が入力絶対値以
下となっていた． 〔発明が解決しようとする課題〕 上述した従来のチョッパー方式インバーテイングスイッ
チングレギュレータは、出力電圧絶対値が入力電圧絶対
値以下となっているので、出力電圧の絶対値が入力電圧
絶対値より大きく且つ極性を反転した出力を得るには、
変圧器を用いる必要があり、部品点数の増大により大型
化してしまうという欠点がある。Chopper type switching regulators are suitable for miniaturization as they do not use a transformer, and have the advantage of being more efficient than series regulators due to the switching method, and each step-down, step-up, and inverting circuit is realized using PWM control. However, in the inverting function, the output absolute value was less than the input absolute value. [Problems to be Solved by the Invention] In the conventional chopper type inverting switching regulator described above, the absolute value of the output voltage is less than the absolute value of the input voltage. To obtain an output with inverted polarity,
It requires the use of a transformer, which has the disadvantage of increasing the size due to the increased number of parts.

〔課題を解決するための手段〕[Means to solve the problem]

本発明のスイッチングレギュレー夕は、チョッパー方式
スイッチングレギュレー夕において、ステップアップ機
能部と、インバーティング機能部とを備えることを特徴
とする。The switching regulator of the present invention is a chopper type switching regulator, and is characterized in that it includes a step-up function section and an inverting function section.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する．第１図
は本発明の一実施例を示す回路図であり、１は入力電圧
源、２は汎用のＰＷＭ制御回路部、３はステップアップ
チョッパー回路部、４はステップアップチョッパー回路
部３をステップアップ電圧を入力とするインバーティン
グチョッパー回路部、５は負荷である。Next, the present invention will be explained with reference to the drawings. FIG. 1 is a circuit diagram showing an embodiment of the present invention, in which 1 is an input voltage source, 2 is a general-purpose PWM control circuit section, 3 is a step-up chopper circuit section, and 4 is a step-up chopper circuit section 3. The inverting chopper circuit unit receives the up voltage as input, and 5 is a load.

ステップアップチョッパー回路部３はインダクタ（以下
Ｌｌ），スイッチングトランジスタ（以下Ｑ１），転流
ダイオード（以下Ｄ１）及びコンデンサ（以下Ｃｌ）か
らなり、入力電源１の一方の端子はＬｌ，ＤＩを介して
インバーティングチョッパー回路部４に接続され、入力
電源１の他方の端子はＱ＋のエミッタ＋ＣＩの一端子と
接続され、Ｌ，ｔとＤ１の接続点にＱｌのコレクタが接
続され、Ｄ１の出力に０１の十端子が接続され、Ｑ１の
ベースはＰＷＭ制御回路部２と接続されている。The step-up chopper circuit section 3 consists of an inductor (hereinafter referred to as Ll), a switching transistor (hereinafter referred to as Q1), a free-wheeling diode (hereinafter referred to as D1), and a capacitor (hereinafter referred to as Cl), and one terminal of the input power supply 1 is connected via Ll and DI. It is connected to the inverting chopper circuit section 4, the other terminal of the input power supply 1 is connected to the emitter of Q+ + one terminal of CI, the collector of Ql is connected to the connection point of L, t and D1, and the output of D1 is connected to 01 The base of Q1 is connected to the PWM control circuit section 2.

また、インバーテイングチョツパー回路部４は、スイッ
チングトランジスタ（以下Ｑ２）．インダクタ（以下Ｌ
２），転流ダイオード（以下Ｄ２　）及びコンデンサ（
以下Ｃ２　）からなり、Ｑ２のエミッタはステップアッ
プチョッパー回路部３の出力，ＰＷＭ制御回路部２と接
続され、Ｑ２のベースはＰＷＭ制御回路部２と接続され
、Ｑ２のコレクタはＬ２，Ｄ２と接続され、Ｄ２の十端
子はＣ２の一端子，ＰＷＭ制御回路部２と接続され、Ｃ
２は負荷５と並列に接続されている。The inverting chopper circuit section 4 also includes a switching transistor (hereinafter referred to as Q2). Inductor (hereinafter L)
2), commutating diode (hereinafter referred to as D2) and capacitor (
The emitter of Q2 is connected to the output of the step-up chopper circuit section 3 and the PWM control circuit section 2, the base of Q2 is connected to the PWM control circuit section 2, and the collector of Q2 is connected to L2 and D2. The ten terminal of D2 is connected to one terminal of C2, the PWM control circuit section 2, and the
2 is connected in parallel with the load 5.

このように構成した本実施例の動作は周知のチョッパー
動作であり、ステップアップチョツバー回路部３におい
て入力電圧をｖ．，Ｃ１の電圧をＶ，′，スイッチング
デュティーをＤとすると、次の関係式が成立する。The operation of this embodiment configured in this way is a well-known chopper operation, in which the input voltage is changed to v. , C1 is V,', and the switching duty is D, the following relational expression holds true.

Ｖｌ　’　＝ｖ＋　／　（Ｉ　　Ｄ）　　　　　　　・
・・・・・（１）またインバーティングチョッパー回路
部４において０２の電圧を”０＋スイッチングデュテイ
ーをＤ′とすると、次の関係式が成立する。Vl' = v+ / (ID) ・
(1) In addition, in the inverting chopper circuit section 4, if the voltage of 02 is "0" and the switching duty is D', the following relational expression holds true.

Ｖｏ　＝Ｄ’　Ｖｌ　　’　／　（１−Ｄ′）　　　　
−・”（２）（１）　，　（２）式からＶｌとＶ。の関
係は、ＶＱ　＝Ｄ’　Ｖｌ　／　（１−Ｄ’　）（１−
Ｄ）・・・・・・（３） が得られ、ｌｖｏｌ＞ｌｖＩ　１となり、回路の導通条
件からＶｏはＶｌに対して極性が反転していることが分
かる。Vo = D'Vl' / (1-D')
-・"(2) From equations (1) and (2), the relationship between Vl and V. is VQ = D' Vl / (1-D') (1-
D) (3) is obtained, lvol>lvI 1, and it can be seen from the conduction conditions of the circuit that the polarity of Vo is inverted with respect to Vl.

なお本回路において、ステップアップチョッパー回路部
の出力電圧をそのままとり出せば、ステップアップ及び
ステップアップ・インバーテイング電圧の２出力スイッ
チングレギュレー夕として用いることもできる． 〔発明の効果〕 以上説明したように本発明は、ステップアップ機能とイ
ンバーティング機能のチョッパー動作を組み合わせて、
変圧器を介することなく出力電圧絶対値が入力電圧絶対
値より大きく且つ入力電圧極性を反転した出力電圧を容
易に得ることができ部品点数の増大がなく回路規模の大
型化をおさえることができる効果がある．In addition, in this circuit, if the output voltage of the step-up chopper circuit section is extracted as is, it can also be used as a two-output switching regulator for step-up and step-up inverting voltages. [Effects of the Invention] As explained above, the present invention combines the chopper operation of the step-up function and the inverting function,
It is possible to easily obtain an output voltage in which the absolute value of the output voltage is greater than the absolute value of the input voltage and the polarity of the input voltage is inverted without going through a transformer, and the number of parts does not increase and the circuit size can be suppressed. There is.

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

第１図は本発明の一実施例を示す回路図である。 １・・・入力電源、２・・・ＰＷＭ制御回路部、３・・
・ステップアップチョッパー回路部、４・・・インバー
ティングチョッパー回路部、５・・・負荷、ｃ．，Ｃ２
・・・コンデンサ、Ｄ．，Ｄ２・・・転流ダイオード、
Ｌｌ，Ｌ２・・・インダクタ、Ｑｌ，Ｑ２・・・スイッ
チングトランジスタ。FIG. 1 is a circuit diagram showing an embodiment of the present invention. 1... Input power supply, 2... PWM control circuit section, 3...
- Step-up chopper circuit section, 4... Inverting chopper circuit section, 5... Load, c. ,C2
...Capacitor, D. , D2... commutation diode,
Ll, L2...inductor, Ql, Q2... switching transistor.

Claims (1)

【特許請求の範囲】[Claims] チョッパー方式スイッチングレギュレータにおいて、ス
テップアップ機能部と、インバーティング機能部とを備
えることを特徴とするスイッチングレギュレータ。A chopper type switching regulator characterized by comprising a step-up function section and an inverting function section.
JP5537789A 1989-03-07 1989-03-07 Switching regulator Pending JPH02237461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5537789A JPH02237461A (en) 1989-03-07 1989-03-07 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5537789A JPH02237461A (en) 1989-03-07 1989-03-07 Switching regulator

Publications (1)

Publication Number Publication Date
JPH02237461A true JPH02237461A (en) 1990-09-20

Family

ID=12996798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5537789A Pending JPH02237461A (en) 1989-03-07 1989-03-07 Switching regulator

Country Status (1)

Country Link
JP (1) JPH02237461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406471A (en) * 1992-11-13 1995-04-11 Matsushita Electric Works, Ltd. AC-to-DC converter incorporating a chopper and charge-pump circuit combination

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56101373A (en) * 1980-01-11 1981-08-13 Nichicon Capacitor Ltd Switching regulator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56101373A (en) * 1980-01-11 1981-08-13 Nichicon Capacitor Ltd Switching regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406471A (en) * 1992-11-13 1995-04-11 Matsushita Electric Works, Ltd. AC-to-DC converter incorporating a chopper and charge-pump circuit combination

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