JP2003274660A - Switching power source circuit - Google Patents
Switching power source circuitInfo
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- JP2003274660A JP2003274660A JP2002073408A JP2002073408A JP2003274660A JP 2003274660 A JP2003274660 A JP 2003274660A JP 2002073408 A JP2002073408 A JP 2002073408A JP 2002073408 A JP2002073408 A JP 2002073408A JP 2003274660 A JP2003274660 A JP 2003274660A
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- circuit
- voltage
- switching
- control circuit
- power supply
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、スイッチング電源
回路に関する。TECHNICAL FIELD The present invention relates to a switching power supply circuit.
【０００２】[0002]
【従来の技術】図２は、従来のスイッチング電源回路２
００を示す回路図である。2. Description of the Related Art FIG. 2 shows a conventional switching power supply circuit 2.
It is a circuit diagram which shows 00.
【０００３】従来のスイッチング電源回路２００におい
て、第１の抵抗器Ｒ１１と、補助電源回路３０とから、
制御回路４に電源電圧が供給されている。In the conventional switching power supply circuit 200, from the first resistor R11 and the auxiliary power supply circuit 30,
The power supply voltage is supplied to the control circuit 4.
【０００４】抵抗器Ｒ１１は、交流入力電源を投入した
後に、１次側整流回路１を介して得られた直流入力電圧
を、制御回路４に電力を供給する起動用の抵抗器であ
る。The resistor R11 is a starting resistor for supplying electric power to the control circuit 4 with a DC input voltage obtained through the primary side rectifying circuit 1 after the AC input power source is turned on.
【０００５】補助電源回路３０は、変圧器Ｔの補助巻線
Ｎ３と、ダイオードＤ３と、コンデンサＣ１と、抵抗器
Ｒ２と、トランジスタＱ３と、ツェナーダイオードＤ４
とによって構成されている。そして、ＦＥＴ２がスイッ
チングを開始した後は、補助電源回路３０から、制御回
路４に電力が供給されるだけではなく、抵抗器Ｒ１１を
介しても、電力が供給され続ける。The auxiliary power supply circuit 30 includes an auxiliary winding N3 of a transformer T, a diode D3, a capacitor C1, a resistor R2, a transistor Q3 and a Zener diode D4.
It is composed of and. Then, after the FET 2 starts switching, not only the power is supplied from the auxiliary power supply circuit 30 to the control circuit 4, but also the power is continuously supplied through the resistor R11.
【０００６】次に、上記従来例の動作について説明す
る。Next, the operation of the above conventional example will be described.
【０００７】まず、交流入力電圧を投入すると、１次側
整流回路１を介して、直流入力電圧が電源として、制御
回路４に投入される。最初は、ＦＥＴ２がオフし、スイ
ッチングを開始していないので、変圧器Ｔの補助巻線Ｎ
３には電圧が発生しない。したがって、交流入力電圧の
投入時、つまり、直流入力電圧の投入時は、抵抗器Ｒ１
１が制御回路４に起動電流を供給し、これによって制御
回路４が起動する。First, when an AC input voltage is applied, the DC input voltage is applied to the control circuit 4 as a power source via the primary side rectifying circuit 1. At first, since FET2 is off and switching is not started, the auxiliary winding N of the transformer T is
No voltage is generated in 3. Therefore, when the AC input voltage is applied, that is, when the DC input voltage is applied, the resistor R1
1 supplies a starting current to the control circuit 4, which starts the control circuit 4.
【０００８】そして、制御回路４が起動した後に、ＦＥ
Ｔ２がスイッチングを開始し、変圧器Ｔに交流が流れ始
めると、変圧器Ｔの補助巻線Ｎ３に交流電圧が発生し、
ダイオードＤ３で整流され、抵抗器Ｒ２に電流が流れ始
め、トランジスタＱ３が導通し、補助電源回路３０の出
力端子に電圧が発生する。この場合、補助巻線Ｎ３に発
生する交流電圧の高さに応じて、抵抗器Ｒ２を流れる電
流が変わり、つまり抵抗器Ｒ２の両端電圧が変わるの
で、トランジスタＱ３のインピーダンスが変わり、した
がって、定電圧が発生する。この結果、補助電源回路３
０から制御回路４に電力が供給される。After the control circuit 4 is activated, the FE
When T2 starts switching and an alternating current begins to flow in the transformer T, an alternating voltage is generated in the auxiliary winding N3 of the transformer T,
It is rectified by the diode D3, a current starts flowing through the resistor R2, the transistor Q3 becomes conductive, and a voltage is generated at the output terminal of the auxiliary power supply circuit 30. In this case, since the current flowing through the resistor R2 changes, that is, the voltage across the resistor R2 changes according to the height of the AC voltage generated in the auxiliary winding N3, the impedance of the transistor Q3 changes, and therefore the constant voltage Occurs. As a result, the auxiliary power supply circuit 3
Power is supplied from 0 to the control circuit 4.
【０００９】[0009]
【発明が解決しようとする課題】上記従来例において、
起動時の電力を必要とする制御回路４の場合は、抵抗器
Ｒ１１に流す電流も、十分に多くする必要がある。ＦＥ
Ｔ２がスイッチングを開始し、補助電源回路３０から電
力が供給される定常動作時も、常に、抵抗器Ｒ１１に電
流が流れ続けるので、抵抗器Ｒ１１に常時電力損失が生
じている。また、出力電流が軽負荷である場合には、補
助巻線Ｎ３から十分な電力を得られないことがあり、こ
の場合、殆どの電力が抵抗器Ｒ１１を介して供給される
ので、抵抗器Ｒ１１として、大電力用の大型の抵抗器が
必要であり、このために、電源が大型化するという問題
があり、電源の大型化に伴って、スイッチング電源回路
２００がコストアップするという問題がある。SUMMARY OF THE INVENTION In the above conventional example,
In the case of the control circuit 4 which requires power at the time of startup, it is necessary to increase the current flowing through the resistor R11 sufficiently. FE
Even during the steady operation in which T2 starts switching and the power is supplied from the auxiliary power supply circuit 30, the current always flows through the resistor R11, so that the power loss always occurs in the resistor R11. When the output current is a light load, sufficient electric power may not be obtained from the auxiliary winding N3. In this case, most of the electric power is supplied via the resistor R11. As a result, a large resistor for high power is required, which causes a problem that the power supply becomes large, and there is a problem that the cost of the switching power supply circuit 200 increases as the power supply becomes large.
【００１０】本発明は、交流電源を１次側整流回路が整
流し、制御回路によって制御されるスイッチング素子
が、上記整流された電圧を交流電圧に変換し、この変換
された交流電を２次側整流回路で整流し、出力するスイ
ッチング電源回路において、上記制御回路に供給する直
流電圧の経路に設けられている抵抗器の消費電力を少な
くすることができ、したがって、電源の大型化を阻止す
ることができるスイッチング電源回路を提供することを
目的とするものである。According to the present invention, a primary side rectifier circuit rectifies an AC power source, a switching element controlled by a control circuit converts the rectified voltage into an AC voltage, and the converted AC power is secondary side. In a switching power supply circuit that rectifies and outputs by a rectifier circuit, it is possible to reduce the power consumption of the resistor provided in the path of the DC voltage supplied to the control circuit, thus preventing an increase in the size of the power supply. It is an object of the present invention to provide a switching power supply circuit capable of
【００１１】[0011]
【課題を解決するための手段】本発明は、直流入力電圧
をスイッチングするスイッチング素子と、上記スイッチ
ング素子がオン、オフする時間を変えることによって、
上記直流出力電圧が一定になるように制御する制御回路
と、上記直流入力電圧の投入時に、上記制御回路に電力
を供給し、上記スイッチング素子のスイッチングの定常
動作時に、上記制御回路への電力供給を停止する投入時
用電源回路と、定常時に上記制御回路に電力を供給する
定常時用電源回路とを有するスイッチング電源回路であ
る。According to the present invention, a switching element for switching a DC input voltage and a time for which the switching element is turned on and off are changed.
A control circuit for controlling the DC output voltage to be constant, and supplying power to the control circuit when the DC input voltage is applied, and supplying power to the control circuit during steady operation of switching of the switching element. Is a switching power supply circuit having a power supply circuit for turning on which stops the power supply and a power supply circuit for steady time which supplies electric power to the control circuit at a normal time.
【００１２】[0012]
【発明の実施の形態および実施例】図１は、本発明の一
実施例であるスイッチング電源回路１００を示す回路図
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a circuit diagram showing a switching power supply circuit 100 which is an embodiment of the present invention.
【００１３】スイッチング電源回路１００は、１次側整
流回路１と、ＦＥＴ２と、変圧器Ｔと、２次側整流回路
３と、制御回路４と、投入時用電源回路１０と、定常時
用電源回路２０とを有する。The switching power supply circuit 100 includes a primary side rectifying circuit 1, an FET 2, a transformer T, a secondary side rectifying circuit 3, a control circuit 4, a closing power source circuit 10, and a steady state power source. And a circuit 20.
【００１４】１次側整流回路１は、交流電源を整流し，
直流入力電圧を生成する回路であり、ＦＥＴ２は、上記
直流入力電圧をスイッチングするトランジスタである。The primary side rectifier circuit 1 rectifies an AC power source,
The FET 2 is a circuit that generates a DC input voltage, and the FET 2 is a transistor that switches the DC input voltage.
【００１５】２次側整流回路３は、上記直流入力電圧を
ＦＥＴ２がスイッチングすることによって発生した交流
を直流出力電圧に整流する整流平滑回路である。The secondary side rectifying circuit 3 is a rectifying / smoothing circuit for rectifying the alternating current generated by switching the direct current input voltage by the FET 2 into a direct current output voltage.
【００１６】制御回路４は、ＦＥＴ２がオン、オフする
時間を変えることによって、上記直流出力電圧が一定に
なるように制御する制御回路である。The control circuit 4 is a control circuit that controls the DC output voltage to be constant by changing the on / off time of the FET 2.
【００１７】投入時用電源回路１０は、上記直流入力電
圧の投入時に、制御回路４に電力を供給し、一方、ＦＥ
Ｔ２のスイッチングの定常動作時に、制御回路４への電
力供給を停止する投入時用電源回路である。また、投入
時用電源回路１０は、トランジスタＱ１と、抵抗器Ｒ１
と、ツェナーダイオードＤ１によって構成されている。The turning-on power supply circuit 10 supplies electric power to the control circuit 4 when the above DC input voltage is turned on, while the FE
This is a power supply circuit for turning on, which stops the power supply to the control circuit 4 during the steady operation of the switching of T2. Further, the power supply circuit 10 for turning on includes a transistor Q1 and a resistor R1.
And a Zener diode D1.
【００１８】つまり、投入時用電源回路１０は、定常時
用電源回路２０で発生した直流電圧に基づいて、整流平
滑回路(１次側整流回路１)から制御回路４への経路をス
イッチングする回路である。That is, the turning-on power supply circuit 10 is a circuit for switching the path from the rectifying / smoothing circuit (primary side rectifying circuit 1) to the control circuit 4 based on the DC voltage generated in the steady-state power supply circuit 20. Is.
【００１９】定常時用電源回路２０は、上記直流入力電
圧をＦＥＴ２がスイッチングすることによって発生した
交流電圧を整流平滑し、この整流平滑された電圧を所定
の定電圧にし、制御回路４に電力を供給する定常時用電
源回路である。The steady-state power supply circuit 20 rectifies and smoothes the AC voltage generated by the switching of the DC input voltage by the FET 2, and makes the rectified and smoothed voltage a predetermined constant voltage to supply power to the control circuit 4. It is a power supply circuit for steady state supply.
【００２０】定常時用電源回路２０は、変圧器Ｔの補助
巻線Ｎ３と、ダイオードＤ３と、平滑コンデンサＣ１
と、トランジスタＱ２と、抵抗器Ｒ２と、ツェナーダイ
オードＤ１と、ダイオードＤ２とを有する。The steady-state power supply circuit 20 includes an auxiliary winding N3 of the transformer T, a diode D3, and a smoothing capacitor C1.
, A transistor Q2, a resistor R2, a Zener diode D1, and a diode D2.
【００２１】次に、スイッチング電源回路１００の動作
について説明する。Next, the operation of the switching power supply circuit 100 will be described.
【００２２】まず、スイッチング電源回路１００の起動
時には、１次側整流回路１を介して得られた直流電圧か
ら、トランジスタＱ１、抵抗器Ｒ１、ツェナーダイオー
ドＤ１によって構成されている投入時用電源回路１０
が、制御回路４に電力を供給する。つまり、スイッチン
グ電源回路１００の起動時に、１次側整流回路１を介し
て得られた直流電圧が、抵抗器Ｒ１とツェナーダイオー
ドＤ１とに印加され、抵抗器Ｒ１に電流が流れ、トラン
ジスタＱ１にバイアスがかかり、トランジスタＱ１がオ
ンする。これによって、スイッチング電源回路１００の
起動時には、投入時用電源回路１０を介して、制御回路
４に電力が供給される。First, when the switching power supply circuit 100 is started, the power supply circuit 10 for turning on, which is composed of a transistor Q1, a resistor R1, and a zener diode D1 from the DC voltage obtained through the primary side rectification circuit 1.
Supplies power to the control circuit 4. That is, when the switching power supply circuit 100 is activated, the DC voltage obtained through the primary side rectification circuit 1 is applied to the resistor R1 and the Zener diode D1, and a current flows through the resistor R1 to bias the transistor Q1. Therefore, the transistor Q1 is turned on. As a result, when the switching power supply circuit 100 is activated, electric power is supplied to the control circuit 4 via the power supply circuit 10 for turning on.
【００２３】その後、制御回路４が動作し、ＦＥＴ２の
スイッチングが定常動作になれば、変圧器Ｔの補助巻線
Ｎ３に発生した交流電圧をダイオードＤ３が整流し、コ
ンデンサＣ１で平滑され、直流電圧が発生する。この直
流電圧が所定電圧に達すると、抵抗器Ｒ２に電流が流
れ、トランジスタＱ２がオンし、このときの電圧が、制
御回路４に印加され、制御回路４に電力が供給され，定
常時が開始される。After that, when the control circuit 4 operates and the switching of the FET2 becomes a steady operation, the diode D3 rectifies the AC voltage generated in the auxiliary winding N3 of the transformer T and the DC voltage is smoothed by the capacitor C1. Occurs. When this DC voltage reaches a predetermined voltage, a current flows through the resistor R2, the transistor Q2 is turned on, the voltage at this time is applied to the control circuit 4, power is supplied to the control circuit 4, and the steady state starts. To be done.
【００２４】この定常時において、投入時用電源回路１
０の出力電位(トランジスタＱ１のエミッタの電位)は、
ツェナーダイオードＤ１のカソード側の電位(トランジ
スタＱ１のベースの電位)よりも、ダイオードＤ２の順
方向電圧Ｖｆ分だけ低いので、トランジスタＱ１のベー
ス‐エミッタ間は逆バイアスになり、トランジスタＱ１
がオフする。In this steady state, power-on circuit 1 for turning on
The output potential of 0 (the potential of the emitter of the transistor Q1) is
Since it is lower than the cathode side potential of the Zener diode D1 (potential of the base of the transistor Q1) by the forward voltage Vf of the diode D2, the base-emitter of the transistor Q1 is reverse biased and the transistor Q1
Turns off.
【００２５】したがって、ＦＥＴ２のスイッチングが定
常動作になれば、制御回路４への電力供給は、定常時用
電源回路２０からのみ行われる。なお、ダイオードＤ２
の代わりに、複数個のダイオードを互いに直列接続した
回路を使用するようにしてもよく、また、新たにツェナ
ーダイオードを、図１中のダイオードＤ２と逆の極性で
用い、投入時用電源回路１０の出力電圧と、定常時用電
源回路２０の出力電圧とに差を設けるようにしてもよ
い。Therefore, when the switching of the FET 2 is in a steady operation, power is supplied to the control circuit 4 only from the power supply circuit 20 for steady time. The diode D2
Alternatively, a circuit in which a plurality of diodes are connected in series with each other may be used, and a new Zener diode is used with a polarity opposite to that of the diode D2 in FIG. It is also possible to provide a difference between the output voltage of 1 and the output voltage of the power supply circuit for steady state 20.
【００２６】次に、出力電流が軽負荷または無負荷の場
合には、ＦＥＴ２のパルス幅が減少し、または、間欠動
作になるので、補助巻線Ｎ３からの電圧が低下し、トラ
ンジスタＱ１のベース‐エミッタ間が順バイアスにな
り、トランジスタＱ１がオンし、投入時用電源回路１０
から、制御回路４に電力が供給される。Next, when the output current is lightly loaded or unloaded, the pulse width of the FET2 is reduced or the operation is intermittent, so that the voltage from the auxiliary winding N3 is lowered and the base of the transistor Q1 is reduced. -Between the emitter and the forward bias, the transistor Q1 is turned on, and the power supply circuit for turning on 10
From, the power is supplied to the control circuit 4.
【００２７】なお、本実施例は、半導体スイッチング素
子としてＦＥＴ２を用いているが、この代わりに、トラ
ンジスタまたはＩＧＢＴ等を使用するようにしてもよ
い。Although the FET 2 is used as the semiconductor switching element in this embodiment, a transistor, an IGBT or the like may be used instead.
【００２８】上記実施例において、入力電源の投入時と
出力の軽負荷または無負荷時とには、投入時用電源回路
１０を介して、制御回路４に電力を供給し、ＦＥＴ２の
スイッチングが定常動作しているときには、変圧器Ｔの
補助巻線Ｎ３からの定常時用電源回路２０のみが制御回
路４に電力を供給するので、投入時用電源回路１０にお
ける電力消費が少なく、効率を向上することができ、ま
た、電源回路１０、２０のいずれの回路も、定電圧ドロ
ッパ型レギュレータであるので、入出力の変動に対して
安定した電力を供給することができる。In the above embodiment, when the input power source is turned on and the output is lightly loaded or unloaded, power is supplied to the control circuit 4 through the power source circuit 10 for turn-on, and the switching of the FET 2 is steady. When operating, only the steady-state power supply circuit 20 from the auxiliary winding N3 of the transformer T supplies power to the control circuit 4, so that the power-on power supply circuit 10 consumes less power and improves efficiency. Further, since both of the power supply circuits 10 and 20 are constant voltage dropper type regulators, stable power can be supplied against fluctuations in input / output.
【００２９】[0029]
【発明の効果】本発明によれば、交流電源を１次側整流
回路が整流し、制御回路によって制御されるスイッチン
グ素子が、上記整流された電圧を交流電圧に変換し、こ
の変換された交流電を２次側整流回路で整流し、出力す
るスイッチング電源回路において、上記制御回路に供給
する直流電圧の経路に設けられている抵抗器の消費電力
を少なくすることができ、したがって、電源の大型化を
阻止することができるという効果を奏する。According to the present invention, the AC power source is rectified by the primary side rectifier circuit, and the switching element controlled by the control circuit converts the rectified voltage into an AC voltage. In the switching power supply circuit that rectifies and outputs the current to the secondary side rectification circuit, the power consumption of the resistor provided in the path of the DC voltage supplied to the control circuit can be reduced, and thus the power supply can be increased in size. There is an effect that can be prevented.
【図１】本発明の一実施例であるスイッチング電源回路
１００を示す回路図である。FIG. 1 is a circuit diagram showing a switching power supply circuit 100 that is an embodiment of the present invention.
【図２】従来のスイッチング電源回路２００を示す回路
図である。FIG. 2 is a circuit diagram showing a conventional switching power supply circuit 200.
１…１次側整流回路、 ２…ＦＥＴ、 ３…２次側整流回路、 ４…制御回路、 １０…投入時用電源回路、 ２０…定常時用電源回路、 Ｔ…変圧器、 Ｎ３…補助巻線。 1 ... Primary side rectification circuit, 2 ... FET, 3 ... Secondary side rectification circuit, 4 ... control circuit, 10 ... power supply circuit for turning on, 20 ... Power supply circuit for steady state, T ... Transformer, N3 ... Auxiliary winding.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山崎 幹夫 東京都千代田区大手町二丁目３番１号 日 本電信電話株式会社内 (72)発明者 和田 義郎 東京都千代田区大手町二丁目３番１号 日 本電信電話株式会社内 Ｆターム(参考） 5H730 AA15 AS01 BB23 CC01 DD04 EE02 EE08 EE59 FD01 FD24 VV03 VV06 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Mikio Yamazaki 2-3-1, Otemachi, Chiyoda-ku, Tokyo Inside Telegraph and Telephone Corporation (72) Inventor Yoshiro Wada 2-3-1, Otemachi, Chiyoda-ku, Tokyo Inside Telegraph and Telephone Corporation F term (reference) 5H730 AA15 AS01 BB23 CC01 DD04 EE02 EE08 EE59 FD01 FD24 VV03 VV06
Claims (2)
チング素子と；上記直流入力電圧をスイッチングするこ
とによって発生した交流を直流出力電圧に整流する整流
平滑回路と；上記スイッチング素子がオン、オフする時
間を変えることによって、上記直流出力電圧が一定にな
るように制御する制御回路と；上記直流入力電圧の投入
時に、上記制御回路に電力を供給し、上記スイッチング
素子のスイッチングの定常動作時に、上記制御回路への
電力供給を停止する投入時用電源回路と；上記直流入力
電圧をスイッチングすることによって発生した交流電圧
を整流平滑し、この整流平滑された電圧を所定の定電圧
にし、上記制御回路に電力を供給する定常時用電源回路
と；を有することを特徴とするスイッチング電源回路。1. A switching element for switching a direct current input voltage; a rectifying / smoothing circuit for rectifying alternating current generated by switching the direct current input voltage to a direct current output voltage; and a time for turning on / off the switching element. A control circuit for controlling the DC output voltage so as to be constant; supplying power to the control circuit when the DC input voltage is applied, and supplying power to the control circuit during steady operation of switching of the switching element; Power-on circuit for closing the power supply for rectifying and smoothing the AC voltage generated by switching the DC input voltage, setting the rectified and smoothed voltage to a predetermined constant voltage, and supplying power to the control circuit. A power supply circuit for steady-state power supply; and a switching power supply circuit.
した直流電圧に基づいて、上記直流入力電圧から上記制
御回路への経路をスイッチングする回路であることを特
徴とするスイッチング電源回路。2. The power supply circuit for turning on according to claim 1, which is a circuit for switching a path from the DC input voltage to the control circuit based on a DC voltage generated in the power supply circuit for steady state. A switching power supply circuit characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002073408A JP3611246B2 (en) | 2002-03-18 | 2002-03-18 | Switching power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002073408A JP3611246B2 (en) | 2002-03-18 | 2002-03-18 | Switching power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003274660A true JP2003274660A (en) | 2003-09-26 |
| JP3611246B2 JP3611246B2 (en) | 2005-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002073408A Expired - Fee Related JP3611246B2 (en) | 2002-03-18 | 2002-03-18 | Switching power supply circuit |
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| Country | Link |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006166519A (en) * | 2004-12-03 | 2006-06-22 | Matsushita Electric Ind Co Ltd | Switching dc power supply |
| JP2008199765A (en) * | 2007-02-13 | 2008-08-28 | Sanyo Electric Co Ltd | Starting circuit, and switching control circuit |
| JP2011109854A (en) * | 2009-11-19 | 2011-06-02 | Shihen Tech Corp | Led lighting apparatus |
| JP5012905B2 (en) * | 2007-11-20 | 2012-08-29 | 株式会社村田製作所 | Isolated DC-DC converter |
| JP2012249466A (en) * | 2011-05-30 | 2012-12-13 | Nichicon Corp | Switching power supply device |
| JP2014217119A (en) * | 2013-04-23 | 2014-11-17 | 新電元工業株式会社 | Power supply circuit, semiconductor integrated circuit, and insulation type switching power supply |
| WO2016157441A1 (en) * | 2015-03-31 | 2016-10-06 | 三菱電機株式会社 | Power supply device and air-conditioning device |
-
2002
- 2002-03-18 JP JP2002073408A patent/JP3611246B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006166519A (en) * | 2004-12-03 | 2006-06-22 | Matsushita Electric Ind Co Ltd | Switching dc power supply |
| JP4734905B2 (en) * | 2004-12-03 | 2011-07-27 | パナソニック株式会社 | Switching DC power supply |
| JP2008199765A (en) * | 2007-02-13 | 2008-08-28 | Sanyo Electric Co Ltd | Starting circuit, and switching control circuit |
| JP5012905B2 (en) * | 2007-11-20 | 2012-08-29 | 株式会社村田製作所 | Isolated DC-DC converter |
| JP2011109854A (en) * | 2009-11-19 | 2011-06-02 | Shihen Tech Corp | Led lighting apparatus |
| JP2012249466A (en) * | 2011-05-30 | 2012-12-13 | Nichicon Corp | Switching power supply device |
| JP2014217119A (en) * | 2013-04-23 | 2014-11-17 | 新電元工業株式会社 | Power supply circuit, semiconductor integrated circuit, and insulation type switching power supply |
| WO2016157441A1 (en) * | 2015-03-31 | 2016-10-06 | 三菱電機株式会社 | Power supply device and air-conditioning device |
| JPWO2016157441A1 (en) * | 2015-03-31 | 2017-08-10 | 三菱電機株式会社 | Power supply device and air conditioner |
| US10063133B2 (en) | 2015-03-31 | 2018-08-28 | Mitsubishi Electric Corporation | Power supply device and air conditioner |
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| Publication number | Publication date |
|---|---|
| JP3611246B2 (en) | 2005-01-19 |
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