JP2006149111A - Rcc switching regulator for pdp drive circuit - Google Patents

Rcc switching regulator for pdp drive circuit Download PDF

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JP2006149111A
JP2006149111A JP2004337087A JP2004337087A JP2006149111A JP 2006149111 A JP2006149111 A JP 2006149111A JP 2004337087 A JP2004337087 A JP 2004337087A JP 2004337087 A JP2004337087 A JP 2004337087A JP 2006149111 A JP2006149111 A JP 2006149111A
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switching
circuit
voltage
transformer
pdp
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Tsukasa Taniguchi
谷口　　司
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/028—Generation of voltages supplied to electrode drivers in a matrix display other than LCD

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
  • Dc-Dc Converters (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem associated with conventional methods: since a switching regulator is so constructed that two transformers are included, the scale of the circuitry including a control circuit is large and its cost is high. <P>SOLUTION: An RCC switching regulator for PDP drive circuits is so constructed that a transformer supplies two outputs different in value. The switching regulator includes: a primary switching circuit including a control winding that controls the primary winding of the switching transformer and a switching element; voltage rectifier circuits for respectively rectifying the two secondary winding output voltages of the switching transformer; respective voltage stabilization circuits for stabilizing the rectified direct-current voltages; a switching control circuit that feeds fluctuation in the reference direct-current voltage of the stabilized direct-current voltages back to the primary switching circuit to control primary switching operation, and carries out control so as to make constant the values of the output direct-current voltages of the voltage stabilizer circuits; and a circuit for driving a PDP panel. Thus, the switching regulator is provided with circuitry for feeding back the reference voltage for the PDP drive circuit. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ＰＤＰ駆動回路のＲＣＣ（リンギングチョークコンバータ）スイッチング電源に関するものである。   The present invention relates to an RCC (ringing choke converter) switching power supply for a PDP drive circuit.

以下に、従来のＲＣＣスイッチング電源について２つの引例で説明する。図２は先行例である公開公報に記されたＲＣＣスイッチング電源を示すものである。   In the following, a conventional RCC switching power supply is described with two references. FIG. 2 shows an RCC switching power supply described in a prior art publication.

図２において２１は入力端子、２４は入力ＧＮＤ端子、２７は１次側電源整流回路、３２は主スイッチング回路、９はスイッチングトランジスタ、１はスイッチングトランス、２６は２次側整流平滑回路、３０は過電流検出回路、３１は電流検出抵抗、６はスイッチング制御回路、５３は低出力電圧時発振停止回路、６５は外部直流電源低下検出回路、７３は直流出力端子、７４は出力側ＧＮＤ端子、７５は外部制御入力端子（Ｖｃｏｎｔ）、７６は外部直流電源である。このように構成されて１つの出力電圧を安定させて出力するＲＣＣスイッチング電源動作をし、出力直流電圧が必要出力電圧以下の時に９のスイッチングトランジスタを非導通状態にして３２の主スイッチング回路を停止させる６５の外部直流電源低下検出回路を備えたことを特徴としたＲＣＣスイッチング電源構成である。   In FIG. 2, 21 is an input terminal, 24 is an input GND terminal, 27 is a primary side power supply rectifier circuit, 32 is a main switching circuit, 9 is a switching transistor, 1 is a switching transformer, 26 is a secondary side rectifying and smoothing circuit, 30 is Overcurrent detection circuit, 31 is a current detection resistor, 6 is a switching control circuit, 53 is a low output voltage oscillation stop circuit, 65 is an external DC power supply drop detection circuit, 73 is a DC output terminal, 74 is an output side GND terminal, 75 Is an external control input terminal (Vcont), and 76 is an external DC power supply. The RCC switching power supply operation that stabilizes and outputs one output voltage is configured in this way, and when the output DC voltage is less than the required output voltage, the 9 switching transistors are turned off and the 32 main switching circuits are stopped. The RCC switching power supply configuration includes 65 external DC power supply drop detection circuits.

更にもう一つの従来技術を図３で説明する。図３は従来のＰＤＰ駆動回路ＲＣＣスイッチング電源のブロック構成図である。図３において１／１１はスイッチングトランス、２／２２は直流電源、３／３３は１次側スイッチング回路、４／４４は電圧整流回路、５／５５は電圧安定化回路、６／６６はスイッチング制御回路、７はＰＤＰパネル駆動回路、８はＰＤＰパネル駆動回路用基準電圧、９／９９はスイッチングトランジスタである。このように構成されたＲＣＣスイッチング電源において回路動作としては同じ回路が２つあるので１つの回路で説明する。   Yet another prior art will be described with reference to FIG. FIG. 3 is a block diagram of a conventional PDP drive circuit RCC switching power supply. In FIG. 3, 1/11 is a switching transformer, 2/22 is a DC power supply, 3/33 is a primary side switching circuit, 4/44 is a voltage rectifier circuit, 5/55 is a voltage stabilization circuit, and 6/66 is switching control. The circuit, 7 is a PDP panel drive circuit, 8 is a reference voltage for the PDP panel drive circuit, and 9/99 is a switching transistor. In the RCC switching power supply configured in this way, there are two identical circuits as the circuit operation, and therefore only one circuit will be described.

２の直流電源から１０の抵抗器を通して９のスイッチングトランジスタのベースに起動用電圧がまず印加されそのスイッチングトランジスタのコレクタラインに１のスイッチングトランスの１次巻線を通して電流が流れ初期動作を開始する。このスイッチング動作制御としては、１のスイッチングトランスの２次巻線とその２次巻線出力電圧を整流するための４の電圧整流回路さらにその整流された直流電圧を安定化させる５の電圧安定回路、その負荷となる７のＰＤＰパネル駆動回路が接続され、この７のＰＤＰ駆動回路の動作負荷条件によって５の電圧安定回路の出力電圧が変動する。これを６のスイッチング制御回路によって３の１次側スイッチング回路に負荷条件を帰還させることでその負荷条件下で５の電圧安定化回路出力電圧が一定となるようにスイッチング周波数を制御し電圧の安定化を実現している。図２の従来例も基本動作は同じである。
特開平９−２８５１２２号公報 A starting voltage is first applied to the base of 9 switching transistors from 2 DC power sources through 10 resistors, and current flows through the primary winding of 1 switching transformer to the collector line of the switching transistor to start the initial operation. The switching operation control includes a secondary winding of one switching transformer, four voltage rectifier circuits for rectifying the secondary winding output voltage, and five voltage stabilizing circuits for stabilizing the rectified DC voltage. The seven PDP panel drive circuits serving as the loads are connected, and the output voltage of the voltage stabilizing circuit 5 varies depending on the operating load conditions of the seven PDP drive circuits. By feeding back the load condition to the primary side switching circuit of 3 by the switching control circuit of 6, the switching frequency is controlled so that the output voltage of the voltage stabilizing circuit of 5 becomes constant under the load condition, and the voltage is stabilized. Has been realized. The basic operation of the conventional example of FIG. 2 is the same.
JP 9-285122 A

しかしながらこのような２例の構成では、図２の引例１については、まず目的がチョッパー型スイッチングレギュレータやフォワード型スイッチングレギュレータという非常に大規模な回路構成を有する回路の代わりとしてのＲＣＣスイッチング電源の採用ということと、そのＲＣＣスイッチング電源出力電圧が１つであることである。   However, in these two example configurations, the first example in FIG. 2 uses an RCC switching power supply instead of a circuit having a very large circuit configuration such as a chopper type switching regulator or a forward type switching regulator. That is, the RCC switching power supply output voltage is one.

図３の引例２については２つの出力電圧が必要なＰＤＰパネル駆動回路用としてＲＣＣスイッチング電源回路がスイッチングトランスやスイッチング制御回路など２つ必要となり回路規模が非常に大きくなっている。   In Reference 2 of FIG. 3, two RCC switching power supply circuits such as a switching transformer and a switching control circuit are required for a PDP panel drive circuit that requires two output voltages, and the circuit scale is very large.

本発明は、ＰＤＰ駆動回路ＲＣＣスイッチング電源に関するものでり、互いに違う２つの電圧を出力するためのトランスを有したＲＣＣスイッチング電源を用いたＰＤＰの駆動回路において、２つの出力を持つスイッチングトランスと、そのスイッチングトランスの１次巻線及びスイッチング素子を制御する制御巻線を含む１次側スイッチング回路と、スイッチングトランスの２つの２次巻線出力電圧を整流するためのそれぞれの電圧整流回路、その整流された直流電圧を安定化するためのそれぞれの電圧安定化回路、その安定化された直流電圧のうちの基準となる直流電圧の変動を前記１次側スイッチング回路に帰還させることで１次側スイッチング動作を制御し電圧安定回路の出力直流電圧値を一定にするための制御をするスイッチング制御回路、ＰＤＰのパネルを駆動するための回路を備え、この構成により、１つのトランスで２つの電圧出力中の１つの電圧を帰還させることで２つの出力電圧の安定化を可能とするものである。   The present invention relates to a PDP drive circuit RCC switching power supply, and in a PDP drive circuit using an RCC switching power supply having a transformer for outputting two different voltages, a switching transformer having two outputs, A primary side switching circuit including a primary winding of the switching transformer and a control winding for controlling the switching element, a respective voltage rectifier circuit for rectifying two secondary winding output voltages of the switching transformer, and the rectification thereof Each of the voltage stabilizing circuits for stabilizing the direct current voltage, and the primary side switching by feeding back the fluctuation of the standard direct current voltage among the stabilized direct current voltages to the primary side switching circuit. Switching that controls the operation and makes the output DC voltage value of the voltage stabilization circuit constant. This circuit is equipped with a control circuit and a circuit for driving a PDP panel. With this configuration, it is possible to stabilize two output voltages by feeding back one voltage in two voltage outputs with one transformer. is there.

本発明は上記課題を解決しようとするもので、ＰＤＰ駆動回路ＲＣＣスイッチング電源の構成でスイッチングトランスや１次側スイッチング回路、スイッチング制御回路が１つで構成され回路規模の縮小が実現されている。   The present invention is intended to solve the above-mentioned problem, and the PDP drive circuit RCC switching power supply is configured with a single switching transformer, primary switching circuit, and switching control circuit, thereby realizing a reduction in circuit scale.

本発明は、互いに違う２つの電圧を出力するためのトランスを有したＲＣＣスイッチング電源を用いたＰＤＰの駆動回路において、２つの出力を持つスイッチングトランスと、そのスイッチングトランスの１次巻線及びスイッチング素子を制御する制御巻線及びスイッチングトランジスタを含む１次側スイッチング回路と、スイッチングトランスの２つの２次巻線出力電圧を整流するためのそれぞれの電圧整流回路、その整流された直流電圧を安定化するためのそれぞれの電圧安定化回路、その安定化された直流電圧のうちの基準となる直流電圧の変動を前記１次側スイッチング回路に帰還させることで１次側スイッチング動作を制御し電圧安定回路の出力直流電圧値を一定にするための制御をするスイッチング制御回路、ＰＤＰのパネルを駆動するための回路という構成を有している   The present invention relates to a driving circuit for a PDP using an RCC switching power supply having a transformer for outputting two different voltages, a switching transformer having two outputs, a primary winding of the switching transformer, and a switching element. A primary side switching circuit including a control winding and a switching transistor for controlling the voltage, a voltage rectification circuit for rectifying the two secondary winding output voltages of the switching transformer, and stabilizing the rectified DC voltage Each voltage stabilizing circuit for controlling the primary side switching operation by feeding back to the primary side switching circuit the fluctuation of the standard DC voltage among the stabilized DC voltages. A switching control circuit for controlling the output DC voltage to be constant, a PDP panel Has a configuration that the circuit for moving

図１は、本発明の実施例１におけるＰＤＰ駆動回路ＲＣＣスイッチング電源のブロック構成図である。図１において１は２つの出力を持つスイッチングトランス、２は回路に直流電源を供給する直流電源、３はそのスイッチングトランスの１次巻線及びスイッチング素子を制御する制御巻線及び９のスイッチングトランジスタを含む１次側スイッチング回路、４と４１はスイッチングトランスの２つの２次巻線出力電圧を整流するためのそれぞれの電圧整流回路である。   FIG. 1 is a block diagram of a PDP drive circuit RCC switching power supply in Embodiment 1 of the present invention. In FIG. 1, 1 is a switching transformer having two outputs, 2 is a DC power supply for supplying DC power to the circuit, 3 is a control winding for controlling the primary winding and switching element of the switching transformer, and 9 switching transistors. The primary side switching circuits 4 and 41 are voltage rectifier circuits for rectifying the two secondary winding output voltages of the switching transformer.

５と５１はその整流された直流電圧を安定化するためのそれぞれの電圧安定化回路、６はその安定化された直流電圧のうちの基準となる直流電圧の変動を前記１次側スイッチング回路に帰還させることで１次側スイッチング動作を制御し電圧安定回路の出力直流電圧値を一定にするための制御をするスイッチング制御回路、７は５１の電圧安定化回路出力の直流電圧で駆動されるＰＤＰのパネルを駆動するための回路、８は５の電圧安定化回路から出力される直流電圧で供給するＰＤＰパネル駆動回路用基準電圧、１０は電源起動時に９のスイッチングトランジスタのベースバイアス電圧供給用の抵抗器という構成を有している。   Reference numerals 5 and 51 denote respective voltage stabilization circuits for stabilizing the rectified DC voltage, and reference numeral 6 denotes a change in the reference DC voltage among the stabilized DC voltages to the primary side switching circuit. A switching control circuit for controlling the primary side switching operation by feedback and controlling the output DC voltage value of the voltage stabilizing circuit to be constant, 7 is a PDP driven by the DC voltage of 51 voltage stabilizing circuit output 8 is a circuit for driving the panel, 8 is a reference voltage for a PDP panel drive circuit supplied by a DC voltage output from the voltage stabilization circuit 5, and 10 is a base bias voltage supply for the switching transistor 9 at power-on. It has a configuration called a resistor.

以上のように構成されたＰＤＰ駆動回路ＲＣＣスイッチング電源について図１を用いてその動作を説明する。回路動作としては２の直流電源から１０の抵抗器を通して９のスイッチングトランジスタのベースに起動用電圧がまず印加され、そのスイッチングトランジスタのコレクタラインに１のスイッチングトランスの１次巻線を通して電流が流れ初期動作が始まる。このスイッチング動作制御としては、１のスイッチングトランスの２次巻線とその２次巻線出力電圧を整流するための４の電圧整流回路さらにその整流された直流電圧を安定化させる５の電圧安定回路、その負荷となる８のＰＤＰパネル駆動回路用基準電圧が接続され、この８のＰＤＰ駆動回路用基準電圧部の動作負荷条件によって５の電圧安定回路の出力電圧が変動する。これを６のスイッチング制御回路によって３の１次側スイッチング回路に負荷条件を帰還させることでその負荷条件下で５の電圧安定化回路出力電圧が一定となるようにスイッチング周波数を制御し電圧の安定化を実現している。   The operation of the PDP drive circuit RCC switching power supply configured as described above will be described with reference to FIG. As circuit operation, a starting voltage is first applied to the base of 9 switching transistors from 2 DC power sources through 10 resistors, and current flows through the primary winding of 1 switching transformer to the collector line of the switching transistor. Operation starts. The switching operation control includes a secondary winding of one switching transformer, four voltage rectifier circuits for rectifying the secondary winding output voltage, and five voltage stabilizing circuits for stabilizing the rectified DC voltage. The eight PDP panel drive circuit reference voltages serving as the loads are connected, and the output voltage of the voltage stabilization circuit 5 varies depending on the operating load conditions of the eight PDP drive circuit reference voltage sections. By feeding back the load condition to the primary side switching circuit of 3 by the switching control circuit of 6, the switching frequency is controlled so that the output voltage of the voltage stabilizing circuit of 5 becomes constant under the load condition, and the voltage is stabilized. Has been realized.

７のＰＤＰパネル駆動回路側の直流電圧の安定化は上記５、６，３からなる帰還制御は実施せず、１のスイッチングトランスのＰＤＰパネル駆動回路用の２次巻線出力を４１の電圧整流回路で直流電圧に整流しそれを５１のＡＶＲ型電圧安定回路で直流電圧を供給している。８のＰＤＰパネル駆動回路用基準電圧側が帰還型で安定化されるのでその２次巻線と巻線を共有している７のＰＤＰパネル駆動回路側の巻線出力も安定されるので５１のＡＶＲ型電圧安定回路での構成でも問題はない。このようなＰＤＰ駆動回路ＲＣＣスイッチング電源の構成にすることで本発明はスイッチングトランスや１次側スイッチング回路、スイッチング制御回路が１つで構成され回路規模の縮小が実現されている。   7 for stabilizing the DC voltage on the PDP panel drive circuit side, the feedback control consisting of 5, 6 and 3 above is not carried out, and the secondary winding output for the PDP panel drive circuit of 1 switching transformer is 41 voltage rectified. A DC voltage is rectified by a circuit and the DC voltage is supplied by a 51 AVR type voltage stabilizing circuit. Since the reference voltage side for 8 PDP panel drive circuits is stabilized in a feedback type, the winding output on the 7 PDP panel drive circuit side sharing the winding with the secondary winding is also stabilized, so 51 AVR There is no problem with the configuration of the type voltage stabilizing circuit. By adopting such a PDP drive circuit RCC switching power supply configuration, the present invention is composed of a single switching transformer, primary side switching circuit, and switching control circuit, thereby realizing a reduction in circuit scale.

本発明は、主にプラズマディスプレイパネルの駆動回路に用いられるＲＣＣスイッチング電源に利用され、互いに違う２つの電圧を出力するためのトランスを有し、そして１つのトランスで２つの電圧出力中の１つの電圧を帰還させることで、２つの出力電圧の安定化を可能とするものである。   The present invention is mainly used in an RCC switching power supply used in a driving circuit of a plasma display panel, has a transformer for outputting two different voltages, and one transformer outputs one of two voltage outputs. By feeding back the voltage, the two output voltages can be stabilized.

本発明の実施例１におけるＰＤＰ駆動回路ＲＣＣスイッチング電源のブロック構成図Block diagram of a PDP drive circuit RCC switching power supply in Embodiment 1 of the present invention 従来のＲＣＣスイッチング電源の引例１のブロック構成図Block diagram of Reference 1 of conventional RCC switching power supply 従来のＰＤＰ駆動回路ＲＣＣスイッチング電源の引例２のブロック構成図Block diagram of reference 2 of conventional PDP drive circuit RCC switching power supply

符号の説明Explanation of symbols

１ スイッチングトランス
２ 直流電源
３ １次側スイッチング回路
５ 電圧安定回路
６ スイッチング制御回路
７ ＰＤＰパネル駆動回路
１０ 抵抗器
１１ スイッチングトランス
２１ 入力端子
２２ 直流電源
２４ 入力ＧＮＤ端子
２６ ２次側整流平滑回路
２７ スナバ回路
３０ 過電流検出回路
３１ 電流検出抵抗
３２ 主スイッチング回路
３３ １次側スイッチング回路
４１ 電圧整流回路
４４ 電圧整流回路
５１ 電圧安定化回路
５３ 低出力電圧時発振停止回路
５５ 電圧安定化回路
６５ 外部直流電源低下検出回路
６６ スイッチング制御回路
７３ 直流出力端子
７４ 出力側ＧＮＤ端子
７５ 外部制御入力端子（Ｖｃｏｎｔ）
７６ 外部直流電源（Ｖｃｃ）
９９ スイッチングトランジスタ DESCRIPTION OF SYMBOLS 1 Switching transformer 2 DC power supply 3 Primary side switching circuit 5 Voltage stabilization circuit 6 Switching control circuit 7 PDP panel drive circuit 10 Resistor 11 Switching transformer 21 Input terminal 22 DC power supply 24 Input GND terminal 26 Secondary side rectification smoothing circuit 27 Snubber Circuit 30 Overcurrent detection circuit 31 Current detection resistor 32 Main switching circuit 33 Primary side switching circuit 41 Voltage rectifier circuit 44 Voltage rectifier circuit 51 Voltage stabilization circuit 53 Low output voltage oscillation stop circuit 55 Voltage stabilization circuit 65 External DC power supply Lowering detection circuit 66 Switching control circuit 73 DC output terminal 74 Output side GND terminal 75 External control input terminal (Vcont)
76 External DC power supply (Vcc)
99 switching transistor

Claims (1)

互いに違う２つの電圧を出力するためのトランスを有したＲＣＣスイッチング電源を用いたＰＤＰの駆動回路において、２つの出力を持つスイッチングトランスと、そのスイッチングトランスの１次巻線及びスイッチング素子を制御する制御巻線を含む１次側スイッチング回路と、スイッチングトランスの２つの２次巻線出力電圧を整流するためのそれぞれの電圧整流回路、その整流された直流電圧を安定化するためのそれぞれの電圧安定化回路と、その安定化された直流電圧のうちの基準となる直流電圧の変動を前記１次側スイッチング回路に帰還させることで１次側スイッチング動作を制御し電圧安定回路の出力直流電圧値を一定にするための制御をするスイッチング制御回路と、ＰＤＰのパネルを駆動するための回路を備え、１つのトランスで２つの電圧出力中の１つの電圧を帰還させることで２つの出力電圧の安定化を可能としたことを特徴とするＰＤＰ駆動回路ＲＣＣスイッチング電源。 In a PDP driving circuit using an RCC switching power supply having a transformer for outputting two different voltages, a switching transformer having two outputs, and a control for controlling the primary winding and the switching element of the switching transformer Primary side switching circuit including windings, respective voltage rectification circuits for rectifying two secondary winding output voltages of the switching transformer, and respective voltage stabilizations for stabilizing the rectified DC voltage The primary side switching operation is controlled by feeding back to the primary side switching circuit the fluctuation of the standard DC voltage among the circuit and the stabilized DC voltage, and the output DC voltage value of the voltage stabilizing circuit is constant. A switching control circuit for controlling the PDP and a circuit for driving the PDP panel. PDP driving circuit RCC switching power supply, wherein the two one voltage in the voltage output that allowed the stabilization of the two output voltages by feeding back at Nsu.
JP2004337087A 2004-11-22 2004-11-22 Rcc switching regulator for pdp drive circuit Pending JP2006149111A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008040409A (en) * 2006-08-10 2008-02-21 Matsushita Electric Ind Co Ltd Plasma display device
CN103647456A (en) * 2013-12-17 2014-03-19 黄宇嵩 9V boosting device for single cell of multimeter
CN112805776A (en) * 2019-07-22 2021-05-14 京东方科技集团股份有限公司 Panel driving device and method and display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008040409A (en) * 2006-08-10 2008-02-21 Matsushita Electric Ind Co Ltd Plasma display device
CN103647456A (en) * 2013-12-17 2014-03-19 黄宇嵩 9V boosting device for single cell of multimeter
CN112805776A (en) * 2019-07-22 2021-05-14 京东方科技集团股份有限公司 Panel driving device and method and display device
CN112805776B (en) * 2019-07-22 2022-10-25 京东方科技集团股份有限公司 Panel driving device and method and display device

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