CN208158458U - 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 PDFInfo
- Publication number
- CN208158458U CN208158458U CN201820801635.5U CN201820801635U CN208158458U CN 208158458 U CN208158458 U CN 208158458U CN 201820801635 U CN201820801635 U CN 201820801635U CN 208158458 U CN208158458 U CN 208158458U
- Authority
- CN
- China
- Prior art keywords
- switching tube
- drain electrode
- capacitor
- tube
- source electrode
- 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.)
- Expired - Fee Related
Links
Landscapes
- Amplifiers (AREA)
Abstract
A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing provided by the utility model, 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
Technical field
The utility model 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.
Utility model content
Technical problem：In order to solve the defects of prior art, the utility model provides a kind of vehicle overload detection device.
Technical solution：A kind of binary channels Mono-pole switch function based on transformer primary winding multiplexing provided by the utility model
Discharge 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 C1And clamp capacitor
C2Between 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 utility model is the binary channels single-stage being multiplexed based on transformer primary winding
Close power amplifier circuit, each power amplifier channel have shared the same transformer, have simplified circuit form, reduce costs；Meanwhile having
Source clamp 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
Below to the utility model based on the binary channels Mono-pole switch power amplifier that transformer primary winding is multiplexed make into
One step 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 C1And clamp capacitor
C2Between 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801635.5U CN208158458U (en) | 2018-05-28 | 2018-05-28 | A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801635.5U CN208158458U (en) | 2018-05-28 | 2018-05-28 | A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208158458U true CN208158458U (en) | 2018-11-27 |
Family
ID=64388486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820801635.5U Expired - Fee Related CN208158458U (en) | 2018-05-28 | 2018-05-28 | A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208158458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832831A (en) * | 2018-05-28 | 2018-11-16 | 钟曙 | A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing |
-
2018
- 2018-05-28 CN CN201820801635.5U patent/CN208158458U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832831A (en) * | 2018-05-28 | 2018-11-16 | 钟曙 | A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8390373B2 (en) | Ultra-high efficiency switching power inverter and power amplifier | |
| CN102723873B (en) | Dual-input full-isolation integrated current transformer | |
| CN1462504A (en) | High efficiency switching amplifiers | |
| US10284155B2 (en) | Multi-level class D audio power amplifiers | |
| CN105048850B (en) | A kind of single-stage ZVS types push-pull type high frequency link DC/AC converters | |
| CN105553272A (en) | Straight-through prevention half-bridge LLC resonance converter | |
| CN105245113A (en) | Anti-conduction-through soft switch push-pull LLC resonance converter | |
| CN109742969A (en) | One kind being based on magnetic-coupled three-phase inverter | |
| CN102624246A (en) | Single-ended forward parallel push-pull type high-power converter | |
| CN208158458U (en) | A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing | |
| CN108471253A (en) | A kind of high efficiency full-bridge active clamp Mono-pole switch power amplifier | |
| CN103916036B (en) | A kind of Buck high frequency isolation type five-electrical level inverter | |
| CN114157150B (en) | High-gain bidirectional Y source-LLC isolated DC-DC converter | |
| CN110113012A (en) | A kind of circuit topology and method improving linear power amplifier efficiency | |
| CN110212770A (en) | Soft switch back exciting converter | |
| CN208571928U (en) | A kind of high efficiency binary channels output Mono-pole switch power amplifier | |
| CN208158440U (en) | A kind of single-stage and two points one channel switch power amplifier of two-stage mixed high-efficient rate low distortion | |
| CN208209905U (en) | A kind of efficient binary channels Mono-pole switch power amplifier of integrated DC-DC transformation | |
| CN208257666U (en) | A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit | |
| CN108832831A (en) | A kind of binary channels Mono-pole switch power amplifier based on transformer primary winding multiplexing | |
| CN107769599A (en) | Normal shock five-electrical level inverter based on switched capacitor | |
| Zhong et al. | 2.1-channel switching amplifier with DC/high-frequency-AC mixed power supply for efficiency improvement and bus voltage pumping elimination | |
| CN208158459U (en) | A kind of high efficiency full-bridge active clamp Mono-pole switch power amplifier | |
| CN208158457U (en) | A kind of high efficiency active Lossless Snubber High Frequency Link single-stage inverter circuit | |
| CN110048632A (en) | Linear variable-frequency power sources based on novel efficient large-capacity linear power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20200528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |