JPS6042927A - Power mos-fet incorporating gate driving circuit - Google Patents

Power mos-fet incorporating gate driving circuit

Info

Publication number
JPS6042927A
JPS6042927A JP15202683A JP15202683A JPS6042927A JP S6042927 A JPS6042927 A JP S6042927A JP 15202683 A JP15202683 A JP 15202683A JP 15202683 A JP15202683 A JP 15202683A JP S6042927 A JPS6042927 A JP S6042927A
Authority
JP
Japan
Prior art keywords
power
gate
signal input
terminal
fet
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
JP15202683A
Other languages
Japanese (ja)
Inventor
Shigeki Yamane
茂樹 山根
Keijiro Mori
森 継治郎
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15202683A priority Critical patent/JPS6042927A/en
Publication of JPS6042927A publication Critical patent/JPS6042927A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To save the number of components and to attain the operation with less switching low due to a low power signal input by constituting a power MOS and a gate driving circuit connected to a gate terminal on one semiconductor chip. CONSTITUTION:A power MOS11, an MOS16 for gate drive, an MOS17 for signal input inversion, an MOS18 for reverse bias and a power N.MOS19 constitute the circuit. They are constituted on one semiconductor chip. When a normal signal input is 0V, the gate remains at 0V by the MOSes 17, 18. When no pulse signal is applied to an input terminal 15, the MOS16 is driven and the MOS19 is driven by applying a voltage to the gate. This signal input is amplified by the MOS16 and fed to the gate of the MOS19, then the operation with less switching loss is attained with a low power signal input.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ローパワーの信号入力によシ、正確に動作す
るパワーMO3−FETに関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a power MO3-FET that operates accurately with low power signal input.

従来例の構成とその問題点 従来のパワーMO3−FET (以下、パワーMO8)
の使用例を第1図、第2図に示し、説明する。第1図は
パワーMO8を使用する基本構成図、第2図A、Bはパ
ワーMOSゲート部の波形の一例である。
Conventional configuration and its problems Conventional power MO3-FET (hereinafter referred to as power MO8)
An example of its use is shown in FIGS. 1 and 2 and will be explained. FIG. 1 is a basic configuration diagram using a power MO8, and FIGS. 2A and 2B are examples of waveforms of the power MOS gate section.

1はゲート側の直流電圧、2は信号入力端子、3はゲー
トドライブ部、4はNPNI−ランジスタ、5はPNP
)ランジスタ、6はノ々ワ〜N−MO8゜7はゲートソ
ース間に発生するコンデンサ、8は負荷、9は1次側直
流電圧である。
1 is the DC voltage on the gate side, 2 is the signal input terminal, 3 is the gate drive section, 4 is the NPNI-transistor, 5 is the PNP
7 is a capacitor generated between the gate and source, 8 is a load, and 9 is a primary side DC voltage.

通常信号入力が0 の場合はPNPトランジスタ5によ
シ、パワーN・MO3eのゲートGはOvの状態におか
れているが、信号入力端子2ヘパルス信号が印加されれ
ば、N、PN)ランジスタ4がドライブされパワーN−
MO36のゲートGへ電圧を印加し、パワーN、MO8
をドライブする。
Normally, when the signal input is 0, the gate G of the power N/MO3e is set to Ov by the PNP transistor 5, but if a pulse signal is applied to the signal input terminal 2, the N, PN) transistor 4 is driven and the power N-
Apply voltage to gate G of MO36, power N, MO8
drive.

一般に、MOS型はバイポーラ型の構成と比べ電圧動作
摩であるので、信号側は低出力の部品でドライブかり能
であるが、MOSのゲート・ソース間(第1図G−3間
)には構成上、等測的にコンデンサ7が結合されている
。このコンデンサ容量は、MOSのドレイン電流に比例
しておりパワーMO3Tは、この容量が大きな値となり
、ゲートGへ瞬間的に大きな電流を供給しないと第2図
に示す様に入力信号Aに対しゲート信号Bは波形が歪ん
でし甘いパワーMO8のスイッチング損失が増加してし
まう事となる。その為パワーMO3の使用方法において
、従来の構成によれは下記の欠点を有する。
In general, MOS type is voltage-operated compared to bipolar type configuration, so the signal side can be driven by low-output components, but between the gate and source of MOS (between G and 3 in Figure 1) Due to the construction, the capacitor 7 is coupled isometrically. The capacitance of this capacitor is proportional to the drain current of the MOS, and the power MO3T has a large capacitance, and unless a large current is instantaneously supplied to the gate G, the power MO3T will be The waveform of the signal B is distorted and the switching loss of the weak power MO8 increases. Therefore, in the method of using the power MO3, the conventional configuration has the following drawbacks.

(1)スイ・ノテング損失を少なくする為には信号用I
Cでは出力電流が不足する為、適切な増rlj回路とし
てのゲートドライブ部が必要となる。
(1) In order to reduce the switching loss, the signal I
Since the output current is insufficient in C, a gate drive section as an appropriate increase rlj circuit is required.

(2) ゲートドライブ部を設ける為、部品点数が多く
な9、信頼性が低下する。
(2) Since a gate drive section is provided, the number of parts is large9, which reduces reliability.

(3)スイッチング周波数が高くなると漂遊のり。(3) Stray glue occurs when the switching frequency increases.

CKより、第2図Bの如くゲート波形がくずれスイッチ
ング損失が増加する。
Due to CK, the gate waveform is distorted and the switching loss increases as shown in FIG. 2B.

発明の目的 本発明ではローパワーの信号入′力によりスイ、ンチン
グ損失の少ない動作を行なう、・々ローMO8を実現す
る事を目的とする。
OBJECTS OF THE INVENTION It is an object of the present invention to realize a low MO8 that operates with low switching loss by inputting a low power signal.

発明の構成 この目的を達成する為、本発明ではノくローM○Sと、
前記パワーMO3のゲート端子と接続し、かつ電源端子
と信号入力端子を持つMOSからなるゲートドライブ回
路を同一半導体チ、ツブ上に(1/)成したゲートドラ
イブ回路内蔵ノくローMO8であるから、部品点数の削
減による、信頼性の向上を図9.あわぜてローパワーの
信号入力によるスイッチング損失の少ない動作を図るも
のである。
Structure of the Invention In order to achieve this purpose, the present invention provides Nokuro M○S,
This is because it is a low MO8 with a built-in gate drive circuit, which is connected to the gate terminal of the power MO3 and has a gate drive circuit made of a MOS having a power supply terminal and a signal input terminal on the same semiconductor chip. , the reliability is improved by reducing the number of parts as shown in Figure 9. This is intended to achieve operation with less switching loss due to low power signal input.

実施例の説明 本発明の、ゲートドライブ回路内蔵ノぐローMO8の一
実施例を第3図に示し説明する。10はゲート倶]直流
電圧、11はゲートドライブ回路内蔵のパワーMO3で
ある。そして、iiJ 記ゲートドライブ回路内蔵パワ
ーMO311は一対の電諒用端子14および信号入力端
子15を有するゲートドライブ用MO816と、信号入
力反転用MO317と、逆バイアス用MO31sと、ド
レイン端子20およびソース端子21を有するノ(ロー
N、MO819により構成され、これらは同一半導体チ
・ツブ土に形成されている。12は負荷、13は1次側
直流電源である。
DESCRIPTION OF THE EMBODIMENTS An embodiment of the gate drive circuit built-in gate drive circuit MO8 according to the present invention is shown in FIG. 3 and will be described below. 10 is a gate DC voltage, and 11 is a power MO3 with a built-in gate drive circuit. The power MO 311 with a built-in gate drive circuit has a gate drive MO 816 having a pair of communication terminals 14 and a signal input terminal 15, a signal input inversion MO 317, a reverse bias MO 31s, a drain terminal 20, and a source terminal. 21 and MO819, which are formed on the same semiconductor chip. 12 is a load, and 13 is a primary DC power supply.

通常信号入力が0 の場合は信号入力反転用MO817
、逆バイアス用MO81BによシゲートはOvの状態に
おかれている。そして、信号入力端子16へパルス信号
が印加されれば、ゲートドライブ用M’0816がドラ
イブされ、)ぐローN・MO819のゲートへ電圧を印
加し、ノくローN・MOSをドライブする。この信号入
力は、ゲートドライブ用MO316により増巾されてノ
くローN−MO31!9のゲートへ印加される為、ロー
ノくローの信号入力でスイッチング損失の小さいノぐワ
−N−MO319の動作が可能となる。
If the normal signal input is 0, MO817 for signal input inversion
, the reverse bias MO81B has the gate in the Ov state. When a pulse signal is applied to the signal input terminal 16, the gate drive M'0816 is driven, and a voltage is applied to the gate of the low N MO 819, thereby driving the low N MO. This signal input is amplified by the gate drive MO316 and applied to the gate of the N-MO31!9, so the operation of the N-MO319 with low switching loss is achieved with the low signal input. becomes possible.

発明の効果 以上の説明からも明らかなように本発明では、パワーM
O3と前記・ぐローMO8をドライブする電源端子と信
号入力端子を持つゲートドライブ回路を同一半導体チッ
プ上に構成したものであるから、以下の効果をもたらす
ものである。
Effects of the Invention As is clear from the above explanation, in the present invention, the power M
Since a gate drive circuit having a power supply terminal and a signal input terminal for driving O3 and the above-mentioned GLOW MO8 is constructed on the same semiconductor chip, the following effects are brought about.

(1)パワーMO3とそのゲートドライブ回路を一体化
した構成のため浮遊容量や表皮インタフタンスが減少し
、パワーMO8の高速スイ・ソチングが可能とする。
(1) Due to the configuration in which the power MO3 and its gate drive circuit are integrated, stray capacitance and skin interface are reduced, and high-speed switching and sowing of the power MO8 is possible.

(2) ゲートドライブ回路の電源を1次側電源と共用
せず別電源より供給を受けるので、スイ・ソチング損失
が少ない。
(2) Since the power supply for the gate drive circuit is not shared with the primary side power supply and is supplied from a separate power supply, switching loss is reduced.

(3) パワーMO8とゲートドライブ回路を一体化し
た構成のため、部品点数を削減し信頼性を向」ニさせる
(3) Because the power MO8 and gate drive circuit are integrated, the number of parts is reduced and reliability is improved.

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

第1図はパワーMO8を使用する基本構成図、第2図A
、BI′iパワーMOSゲート部の波形の一例を示す波
形図で、Aは入力信号、Bはゲート信号である。第3図
は本発明の一実施例を示すゲートドライブ回路内蔵パワ
ーMO3の基本構成図である。 14・・・・・電源用端子、16・・信号入力端子、1
6・・・ゲートドライブ用MO8,17・・・・−信号
入力反転用MO3,18・・・逆バイアス用MO3,1
9−・・パワーN−MO3120・・・・・、ドレイン
端子、21 −ソース端子。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名8 第2図
Figure 1 is a basic configuration diagram using power MO8, Figure 2A
, BI'i is a waveform diagram showing an example of the waveform of the power MOS gate section, where A is an input signal and B is a gate signal. FIG. 3 is a basic configuration diagram of a power MO3 with a built-in gate drive circuit showing an embodiment of the present invention. 14... Power supply terminal, 16... Signal input terminal, 1
6... MO8, 17 for gate drive - MO3, 18 for signal input inversion... MO3, 1 for reverse bias
9-...Power N-MO3120..., drain terminal, 21-source terminal. Name of agent: Patent attorney Toshio Nakao and 1 other person8 Figure 2

Claims (1)

【特許請求の範囲】[Claims] (1) ドレイン端子、ソース端子、ゲート端子をそれ
ぞれ持つパワーMO3−FETと、前記パワーMO8−
FETと、前記パワーMO3,FETのゲート端子と接
続し、かつ電源端子と信号入力端子を持つMOS−FE
Tからなるゲートドライブ回路を備え、前記パフ−MO
S−FETとゲートドライブ回路を同−手心体チ、ンブ
土に構成したゲートドライブ回路内蔵パワーMO8,F
ET0(2) ゲートドライブ回路はN−MOSと、P
−MOSを直列に接続し、その接続点とパワーiM O
S・FETのゲート端子を接続した特許請求の範囲第1
項記載のゲートドライブ回路内蔵パワーMO3@FET
(1) A power MO3-FET each having a drain terminal, a source terminal, and a gate terminal, and the power MO8-
A MOS-FE connected to the FET, the power MO3, and the gate terminal of the FET, and having a power supply terminal and a signal input terminal.
The puff-MO
Power MO8, F with a built-in gate drive circuit that has an S-FET and a gate drive circuit in the same hand-centered body.
ET0(2) The gate drive circuit is N-MOS and P
-Connect MOS in series and connect the connection point and power iMO
Claim 1 in which the gate terminal of the S-FET is connected
Power MO3@FET with built-in gate drive circuit described in section
.
JP15202683A 1983-08-19 1983-08-19 Power mos-fet incorporating gate driving circuit Pending JPS6042927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15202683A JPS6042927A (en) 1983-08-19 1983-08-19 Power mos-fet incorporating gate driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15202683A JPS6042927A (en) 1983-08-19 1983-08-19 Power mos-fet incorporating gate driving circuit

Publications (1)

Publication Number Publication Date
JPS6042927A true JPS6042927A (en) 1985-03-07

Family

ID=15531432

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15202683A Pending JPS6042927A (en) 1983-08-19 1983-08-19 Power mos-fet incorporating gate driving circuit

Country Status (1)

Country Link
JP (1) JPS6042927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6441314A (en) * 1987-08-06 1989-02-13 Nec Corp Semiconductor integrated circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6441314A (en) * 1987-08-06 1989-02-13 Nec Corp Semiconductor integrated circuit

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