CN108832831A - A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing - Google Patents

A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing Download PDF

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Publication number
CN108832831A
CN108832831A CN201810521834.5A CN201810521834A CN108832831A CN 108832831 A CN108832831 A CN 108832831A CN 201810521834 A CN201810521834 A CN 201810521834A CN 108832831 A CN108832831 A CN 108832831A
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China
Prior art keywords
switching tube
drain electrode
capacitor
tube
source electrode
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CN201810521834.5A
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Chinese (zh)
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钟曙
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing provided by the invention, including half-bridge inversion circuit, transformer, frequency converter CH1, frequency converter CH2, a pair of of active clamp circuit；The half-bridge inversion circuit, frequency converter CH1, frequency converter CH2 are connected by transformer.The power amplifier is the binary channels Mono-pole switch power amplifier being multiplexed based on transformer primary winding, and each power amplifier channel has shared the same transformer, simplified circuit form, reduce costs；Meanwhile active clamp circuit realizes secondary voltage clamper and leakage inductance energy recycling, has the advantages that voltage stress is low and high-efficient.

Description

A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing
Technical field
The present invention relates to a kind of binary channels Mono-pole switch power amplifiers based on transformer primary winding multiplexing, belong to electricity Field.
Background technique
Two-channel stereo audio frequency power amplifier has very extensive application, Mono-pole switch power amplifier (Single stage Amplifier, SSA) SSA passes through DC bus without image of Buddha D class power amplifier like that and powers for multiple power amplifier channels, thus realizes SSA Multichannel output is relatively difficult.Existing binary channels (Two Channel, TC) SSA circuit is complicated, each channel requires one Furthermore there is frequency converter Commutation Problem in a transformer.
Summary of the invention
Technical problem：In order to solve the defects of prior art, the present invention provides a kind of vehicle overload detection devices.
Technical solution：A kind of binary channels Mono-pole switch power amplifier electricity based on transformer primary winding multiplexing provided by the invention Road, including half-bridge inversion circuit, transformer, frequency converter CH1, frequency converter CH2, a pair of of active clamp circuit；
The half-bridge inversion circuit includes switching tube Sa, switching tube Sb, capacitor Ca, capacitor Cb, direct-current input power supplying Vdc；Institute State switching tube SaSource electrode and switching tube SbDrain electrode connection, and with capacitor CaWith capacitor CbSeries circuit it is in parallel, parallel circuit Both ends respectively with direct-current input power supplying VdcAnode connected with cathode；
The active clamp circuit includes clamping switch tube SC1, clamping switch tube SC2, clamping switch tube SC3, clamp switch Pipe SC4, clamp diode D1, clamp diode D2, clamp capacitor C1, clamp capacitor C2；The clamping switch tube SC1Source electrode with Clamping switch tube SC2Drain electrode connection, the clamping switch tube SC3Source electrode and clamping switch tube SC4Drain electrode connection, the pincers Position capacitor C1With clamp capacitor C2Connection, the clamper diode D1Anode and clamp diode D2Cathode connection；It is described to open Close pipe SC1Drain electrode, switching tube SC3Drain electrode, diode D1Cathode and clamp capacitor C1One end connection；The switching tube SC2's Source electrode, switching tube SC4Source electrode, diode D2Anode and clamp capacitor C2The other end connection；
The half-bridge inversion circuit, frequency converter CH1, frequency converter CH2 are connected by transformer；
The transformer includes a primary coil, two secondary coils；Primary coil one end is connected to switching tube SP1's Source electrode and switching tube SP2Drain electrode between, the other end is connected to capacitor CP1With capacitor CP2Between；
The frequency converter CH1 includes switching tube S11, switching tube S12, switching tube S14With switching tube S13, the switching tube S11Source electrode and switching tube S12Source electrode connect to form two-way switch pipe S11-S12, the switching tube S14Source electrode and switching tube S13Source electrode connect to form two-way switch pipe S14-S13；Switching tube S12Drain electrode and switching tube S13Drain electrode connection, and with filtering Inductance Lf1One end connection；Filter inductance Lf1Other end and filter capacitor Cf1With load resistance Rf1It is formed by electricity in parallel Road connection；Filter capacitor Cf1With load Rf1It is formed by parallel circuit other end and clamp capacitor C1With clamp capacitor C2Between Connection；One secondary coil both ends respectively with switching tube S11Drain electrode, switching tube S13Drain electrode connection；One active clamp electricity The clamping switch tube S on roadC1Source electrode and clamping switch tube SC2Drain electrode between with switching tube S11Drain electrode connection, clamp switch Pipe SC3Source electrode and clamping switch tube SC4Drain electrode between with switching tube S13Drain electrode connection, clamp capacitor C1With clamp capacitor C2 Between with secondary coil in the middle part of connect；
The frequency converter CH2 includes switching tube S21, switching tube S22, switching tube S24With switching tube S23, the switching tube S21Source electrode and switching tube S22Source electrode connect to form two-way switch pipe S21-S22, the switching tube S24Source electrode and switching tube S23Source electrode connect to form two-way switch pipe S24-S23；Switching tube S22Drain electrode and switching tube S23Drain electrode connection, and with filtering InductancefL2One end connection；Filter inductance Lf2Other end and filter capacitor Cf2With load resistance Rf2It is formed by electricity in parallel Road connection；Filter capacitor Cf2With load Rf2It is formed by parallel circuit other end and clamp capacitor C1With clamp capacitor C2Between Connection；Another secondary coil both ends respectively with switching tube S21Drain electrode, switching tube S23Drain electrode connection；Another active pincers The clamping switch tube S of position circuitC1Source electrode and clamping switch tube SC2Drain electrode between with switching tube S21Drain electrode connection, clamper Switching tube SC3Source electrode and clamping switch tube SC4Drain electrode between with switching tube S23Drain electrode connection, clamp capacitor C1And clamper Capacitor C2Between with secondary coil in the middle part of connect.
Beneficial effect：Power amplifier provided by the invention is the binary channels Mono-pole switch being multiplexed based on transformer primary winding Power amplifier, each power amplifier channel have shared the same transformer, have simplified circuit form, reduce costs；Meanwhile active pincers Position circuit realizes secondary voltage clamper and leakage inductance energy recycling, has the advantages that voltage stress is low and high-efficient.
Detailed description of the invention
Fig. 1 is the binary channels Mono-pole switch power amplifier figure being multiplexed based on transformer primary winding.
Fig. 2 is TC-SSA modulation timing waveform diagram.
Specific embodiment
The binary channels Mono-pole switch power amplifier being multiplexed the present invention is based on transformer primary winding is made further below Explanation.
Based on the binary channels Mono-pole switch power amplifier of transformer primary winding multiplexing, including half-bridge inversion circuit, transformation Device, frequency converter CH1, frequency converter CH2, a pair of of active clamp circuit；
The half-bridge inversion circuit includes switching tube Sa, switching tube Sb, capacitor Ca, capacitor Cb, direct-current input power supplying Vdc；Institute State switching tube SaSource electrode and switching tube SbDrain electrode connection, and with capacitor CaWith capacitor CbSeries circuit it is in parallel, parallel circuit Both ends respectively with direct-current input power supplying VdcAnode connected with cathode；
The active clamp circuit includes clamping switch tube SC1, clamping switch tube SC2, clamping switch tube SC3, clamp switch Pipe SC4, clamp diode D1, clamp diode D2, clamp capacitor C1, clamp capacitor C2；The clamping switch tube SC1Source electrode with Clamping switch tube SC2Drain electrode connection, the clamping switch tube SC3Source electrode and clamping switch tube SC4Drain electrode connection, the pincers Position capacitor C1With clamp capacitor C2Connection, the clamper diode D1Anode and clamp diode D2Cathode connection；It is described to open Close pipe SC1Drain electrode, switching tube SC3Drain electrode, diode D1Cathode and clamp capacitor C1One end connection；The switching tube SC2's Source electrode, switching tube SC4Source electrode, diode D2Anode and clamp capacitor C2The other end connection；.
The half-bridge inversion circuit, frequency converter CH1, frequency converter CH2 are connected by transformer；
The transformer includes a primary coil, two secondary coils；Primary coil one end is connected to switching tube SP1's Source electrode and switching tube SP2Drain electrode between, the other end is connected to capacitor CP1With capacitor CP2Between；
The frequency converter CH1 includes switching tube S11, switching tube S12, switching tube S14With switching tube S13, the switching tube S11Source electrode and switching tube S12Source electrode connect to form two-way switch pipe S11-S12, the switching tube S14Source electrode and switching tube S13Source electrode connect to form two-way switch pipe S14-S13；Switching tube S12Drain electrode and switching tube S13Drain electrode connection, and with filtering Inductance Lf1One end connection；Filter inductance Lf1Other end and filter capacitor Cf1With load resistance Rf1It is formed by electricity in parallel Road connection；Filter capacitor Cf1With load Rf1It is formed by parallel circuit other end and clamp capacitor C1With clamp capacitor C2Between Connection；One secondary coil both ends respectively with switching tube S11Drain electrode, switching tube S13Drain electrode connection；One active clamp electricity The clamping switch tube S on roadC1Source electrode and clamping switch tube SC2Drain electrode between with switching tube S11Drain electrode connection, clamp switch Pipe SC3Source electrode and clamping switch tube SC4Drain electrode between with switching tube S13Drain electrode connection, clamp capacitor C1With clamp capacitor C2 Between with secondary coil in the middle part of connect；
The frequency converter CH2 includes switching tube S21, switching tube S22, switching tube S24With switching tube S23, the switching tube S21Source electrode and switching tube S22Source electrode connect to form two-way switch pipe S21-S22, the switching tube S24Source electrode and switching tube S23Source electrode connect to form two-way switch pipe S24-S23；Switching tube S22Drain electrode and switching tube S23Drain electrode connection, and with filtering InductancefL2One end connection；Filter inductance Lf2Other end and filter capacitor Cf2With load resistance Rf2It is formed by electricity in parallel Road connection；Filter capacitor Cf2With load Rf2It is formed by parallel circuit other end and clamp capacitor C1With clamp capacitor C2Between Connection；Another secondary coil both ends respectively with switching tube S21Drain electrode, switching tube S23Drain electrode connection；Another active pincers The clamping switch tube S of position circuitC1Source electrode and clamping switch tube SC2Drain electrode between with switching tube S21Drain electrode connection, clamper Switching tube SC3Source electrode and clamping switch tube SC4Drain electrode between with switching tube S23Drain electrode connection, clamp capacitor C1And clamper Capacitor C2Between with secondary coil in the middle part of connect.
The working principle of the circuit, is shown in Fig. 2：
Primary side CP1、CP2、SP1And SP2Half-bridge inversion circuit is formed, transformer primary winding is total to by two channels CH1, CH2 With.Clamp circuit is by clamping switch tube SC1~SC4, clamp diode D1~D2And clamp capacitor C1~C2Composition.The channel CH1 week Wave converter two-way switch pipe driving signal S11/S12With S13/S14For complementation conducting.The channel CH2 frequency converter two-way switch pipe Driving signal S21/S22With S23/S24Complementation conducting.Active clamping switch tube SC1、SC4With SC2、SC3Respectively with primary side switch pipe SP1、SP2It keeps synchronizing, dead time drives slightly long than primary side switch pipe.vin1、vin2The respectively audio letter in the channel CH1, CH2 Number, two-way pwm pulse is generated compared with carrier signal, and the frequency converter in two channels is modulated respectively.
The channel CH1, CH2 output voltage vo1And vo2It indicates, vo1And vo2For
D in formula1、d2It respectively indicates CH1 and CH2 and exports PWM wave duty ratio.Duty ratio d1With carrier amplitude VM, audio input Signal vin1Meet relationship
Convolution (1), (2) can obtain
It can similarly obtain
By formula (3) and formula (4) it is found that the channel CH1, CH2 output voltage vo1And vo2Only input signal with each channel vin1And vin2Related, audio signal amplification factor is Vdc/(2nVM), i.e., two channels can be realized independent Linear Amplifer.

Claims (1)

1. a kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing, it is characterised in that：Including half-bridge Inverter circuit, transformer, frequency converter CH1, frequency converter CH2, a pair of of active clamp circuit；
The half-bridge inversion circuit includes switching tube Sa, switching tube Sb, capacitor Ca, capacitor Cb, direct-current input power supplying Vdc；It is described to open Close pipe SaSource electrode and switching tube SbDrain electrode connection, and with capacitor CaWith capacitor CbSeries circuit it is in parallel, parallel circuit both ends Respectively with direct-current input power supplying VdcAnode connected with cathode；
The active clamp circuit includes clamping switch tube SC1, clamping switch tube SC2, clamping switch tube SC3, clamping switch tube SC4、 Clamp diode D1, clamp diode D2, clamp capacitor C1, clamp capacitor C2；The clamping switch tube SC1Source electrode opened with clamper Close pipe SC2Drain electrode connection, the clamping switch tube SC3Source electrode and clamping switch tube SC4Drain electrode connection, the clamp capacitor C1With clamp capacitor C2Connection, the clamper diode D1Anode and clamp diode D2Cathode connection；The switching tube SC1 Drain electrode, switching tube SC3Drain electrode, diode D1Cathode and clamp capacitor C1One end connection；The switching tube SC2Source electrode, Switching tube SC4Source electrode, diode D2Anode and clamp capacitor C2The other end connection；
The half-bridge inversion circuit, frequency converter CH1, frequency converter CH2 are connected by transformer；
The transformer includes a primary coil, two secondary coils；Primary coil one end is connected to switching tube SP1Source electrode With switching tube SP2Drain electrode between, the other end is connected to capacitor CP1With capacitor CP2Between；
The frequency converter CH1 includes switching tube S11, switching tube S12, switching tube S14With switching tube S13, the switching tube S11's Source electrode and switching tube S12Source electrode connect to form two-way switch pipe S11-S12, the switching tube S14Source electrode and switching tube S13's Source electrode connects to form two-way switch pipe S14-S13；Switching tube S12Drain electrode and switching tube S13Drain electrode connection, and and filter inductance Lf1One end connection；Filter inductance Lf1Other end and filter capacitor Cf1With load resistance Rf1It is formed by parallel circuit company It connects；Filter capacitor Cf1With load Rf1It is formed by parallel circuit other end and clamp capacitor C1With clamp capacitor C2Between connect It connects；One secondary coil both ends respectively with switching tube S11Drain electrode, switching tube S13Drain electrode connection；One active clamp circuit Clamping switch tube SC1Source electrode and clamping switch tube SC2Drain electrode between with switching tube S11Drain electrode connection, clamping switch tube SC3Source electrode and clamping switch tube SC4Drain electrode between with switching tube S13Drain electrode connection, clamp capacitor C1With clamp capacitor C2It Between with secondary coil in the middle part of connect；
The frequency converter CH2 includes switching tube S21, switching tube S22, switching tube S24With switching tube S23, the switching tube S21's Source electrode and switching tube S22Source electrode connect to form two-way switch pipe S21-S22, the switching tube S24Source electrode and switching tube S23's Source electrode connects to form two-way switch pipe S24-S23；Switching tube S22Drain electrode and switching tube S23Drain electrode connection, and and filter inductancefL2One end connection；Filter inductance Lf2Other end and filter capacitor Cf2With load resistance Rf2It is formed by parallel circuit company It connects；Filter capacitor Cf2With load Rf2It is formed by parallel circuit other end and clamp capacitor C1With clamp capacitor C2Between connect It connects；Another secondary coil both ends respectively with switching tube S21Drain electrode, switching tube S23Drain electrode connection；Another active clamp The clamping switch tube S of circuitC1Source electrode and clamping switch tube SC2Drain electrode between with switching tube S21Drain electrode connection, clamper opens Close pipe SC3Source electrode and clamping switch tube SC4Drain electrode between with switching tube S23Drain electrode connection, clamp capacitor C1With clamper electricity Hold C2Between with secondary coil in the middle part of connect.
CN201810521834.5A 2018-05-28 2018-05-28 A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing Withdrawn CN108832831A (en)

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CN201810521834.5A CN108832831A (en) 2018-05-28 2018-05-28 A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing

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CN201810521834.5A CN108832831A (en) 2018-05-28 2018-05-28 A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101521460A (en) * 2009-04-10 2009-09-02 华中科技大学 Multi-channel output direct current-direct-current converter
CN103595287A (en) * 2013-11-27 2014-02-19 东南大学 Method for controlling double-direction power flow high-frequency isolated active clamping inverter
CN106374752A (en) * 2016-07-12 2017-02-01 广东锐顶电力技术有限公司 Single-stage three-level power amplifier circuit
CN208158458U (en) * 2018-05-28 2018-11-27 钟曙 A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101521460A (en) * 2009-04-10 2009-09-02 华中科技大学 Multi-channel output direct current-direct-current converter
CN103595287A (en) * 2013-11-27 2014-02-19 东南大学 Method for controlling double-direction power flow high-frequency isolated active clamping inverter
CN106374752A (en) * 2016-07-12 2017-02-01 广东锐顶电力技术有限公司 Single-stage three-level power amplifier circuit
CN208158458U (en) * 2018-05-28 2018-11-27 钟曙 A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHU ZHONG等: ""High efficiency two-channel single-stage switching amplifier with power switches multiplexing "", 《ELECTRONICS LETTERS》, pages 1499 - 1501 *

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Application publication date: 20181116