CN100530924C - HF switching power supply - Google Patents
HF switching power supply Download PDFInfo
- Publication number
- CN100530924C CN100530924C CNB2004100653733A CN200410065373A CN100530924C CN 100530924 C CN100530924 C CN 100530924C CN B2004100653733 A CNB2004100653733 A CN B2004100653733A CN 200410065373 A CN200410065373 A CN 200410065373A CN 100530924 C CN100530924 C CN 100530924C
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- field effect
- effect transistor
- major loop
- filter capacitor
- transformer
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Abstract
A HF switching power supply with serially connected main circuits has one or two main circuits. Each main circuit is composed of power supply unit, main loops A and B with multiple MOSFETs with low breakthrough voltage (500-600V) connected parallelly for higher power, switch transistor driver and controller, two transformers and output circuit. Its advantages are high frequency, low generated heat, light weight, small size and high dynamic response.
Description
Technical field
The present invention relates to a kind of power supply, particularly a kind of high frequency switch power.
Background technology
At present the high power DC Switching Power Supply all adopts 380 volts alternating currents inputs of three-phase to power as dc welding machine etc.In this power supply, adopt withstand voltage be IGBT single tube more than the 1000V or module as power switch pipe, the Switching Power Supply frequency of this transistor made is low, heating greatly, Heavy Weight, volume is big, dynamic response is slow, cost is high.MOSFEF power field effect pipe more than the withstand voltage 1000V is big because of internal resistance, price is expensive and impracticable.The MOSFEF power field effect pipe of withstand voltage 500-600V can't use in the major loop about the withstand voltage 1000V of need inadequately because of withstand voltage.
Summary of the invention
The object of the present invention is to provide a kind of frequency height, heating is little, in light weight, volume is little, dynamic response is rapid, cost is low and the high frequency switch power that uses in high tension loop with the field effect transistor of low breakdown voltage.
Technical scheme of the present invention is: it is made up of 1 main circuit.This main circuit includes power unit, rectifier bridge, A major loop, B major loop, switching tube driver and control circuit, the first transformer (T
1), the second transformer (T
2).With the first transformer (T
1) and the second transformer (T
2) the circuit that is connected of output be output circuit.The input of power unit and rectifier bridge is connected.Be characterized in: the positive output end of rectifier bridge is connected with the first input end of A major loop, and the negative output terminal of rectifier bridge is connected with second input of B major loop, and second input of A major loop is connected with the first input end of B major loop.A major loop, B major loop adopt normal shock, full-bridge or half-bridge connected mode to be connected.The A major loop all is connected with switching tube driver and control circuit with the B major loop.The output of A major loop and the first transformer (T in the main circuit
1) input be connected the output of B major loop and the second transformer (T in the main circuit
2) input be connected.First transformer (the T
1) and the second transformer (T
2) the number of turn of primary coil identical, the number of turn of secondary coil is also identical.First transformer (the T
1) and the second transformer (T
2) the mode that is connected of secondary employing end of the same name join, be connected with the 7th diode (V7) again after promptly two ends of the same name are connected, be connected with the 8th diode (V8) again after two other end of the same name is connected.First transformer (the T in full-bridge and half-bridge connected mode
1) and the second transformer (T
2) centre tap directly be connected.Described output circuit is made up of the 7th diode (V7), the 8th diode (V8) and filter inductance, the first transformer (T
1) and the second transformer (T
2) output after the 7th diode (V7) and the 8th diode (V8) rectification, be connected again respectively, and then after filter inductance filtering as the output of main circuit.
Described power unit adopts 380V alternating current input power supply;
Described rectifier bridge is by the first to the 66 diode (V
1-V
6) form and the 380V AC rectification is become direct current and use for major loop.
Described output circuit is by the 7th diode (V
7), the 8th diode (V
8) and inductance coil (L) composition.First transformer (the T
1) and the second transformer (T
2) output respectively through above-mentioned two diode rectifications again after filter inductance (L) filtering as the output of this main circuit.
The A major loop with the circuit (seeing accompanying drawing 2) that the B major loop is connected in the normal shock mode is in main circuit: the A major loop is by the first filter capacitor (C
1), the 9th diode (V
9), the tenth diode (V
10), the first resistance (R
1), the second resistance (R
2), the first field effect transistor (Q
1) and the second field effect transistor (Q
2) form.The first input end of A major loop is the first filter capacitor (C
1) positive pole, second input of A major loop is the first filter capacitor (C
1) negative pole.The positive output end of rectifier bridge and the first filter capacitor (C
1) positive pole, the first field effect transistor (Q
1) drain electrode (D), the tenth diode (V
10) negative electrode join.First filter capacitor (the C
1) negative pole, the 9th diode (V
9) anode, the second field effect transistor (Q
2) source electrode (S) interconnect.First to the second field effect transistor (Q
1～Q
2) grid (G) respectively with first to the second resistance (R
1～R
2) an end be connected.The 9th diode (V
9) negative electrode respectively with the first field effect transistor (Q
1) source electrode (S) join after again with the first transformer (T
1) first input end (1) join.The tenth diode (V
10) the anode and the second field effect transistor (Q
2) drain electrode (D) join after again with the first transformer (T
1) second input 2 join.The B major loop is by the second filter capacitor (C
2), the 11 diode (V
11), the 12 diode (V
12), the 3rd resistance (R
3), the 4th resistance (R
4), the 3rd field effect transistor (Q
3) and the 4th field effect transistor (Q
4) form.The first input end of B major loop is the second filter capacitor (C
2) positive pole, second input of B major loop is the second filter capacitor (C
2) negative pole.The negative output terminal of rectifier bridge and the second filter capacitor (C
2) negative pole, the 11 diode (V
11) anode, the 4th field effect transistor (Q
4) source electrode (S) join.Second filter capacitor (the C
2) positive pole, the 3rd field effect transistor (Q
3) drain electrode (D), the 12 diode (V
12) negative electrode interconnect after again with the A major loop in the first filter capacitor (C
1) negative pole be connected.The the 3rd to the 4th field effect transistor (Q
3～Q
4) grid (G) respectively with the 3rd to the 4th resistance (R
3～R
4) an end be connected.The 11 diode (V
11) negative electrode and the 3rd field effect transistor (Q
3) source electrode (S) be connected after again with the second transformer (T
2) first input end 1 join.The 12 diode (V
12) anode and the 4th field effect transistor (Q
4) drain electrode (D) be connected after again with the second transformer (T
2) second input 2 join.
The A major loop with the circuit (seeing accompanying drawing 3) that the B major loop is connected in the full-bridge mode is in main circuit: the A major loop is by the 3rd filter capacitor (C
3), the 5th resistance (R
5), the 6th resistance (R
6), the 7th resistance (R
7), the 8th resistance (R
8), the 5th field effect transistor (Q
5), the 6th field effect transistor (Q
6), the 7th field effect transistor (Q
7), the 8th field effect transistor (Q
8) form.The first input end of A major loop is the 3rd filter capacitor (C
3) positive pole, second input of A major loop is the 3rd filter capacitor (C
3) negative pole.The positive output end of rectifier bridge and the 3rd filter capacitor (C
3) positive pole and the 5th field effect transistor (Q
5) drain electrode (D) and the 6th field effect transistor (Q
6) drain electrode (D) join.The 3rd filter capacitor (C
3) negative pole and the 7th field effect transistor (Q
7) source electrode (S), the 8th field effect transistor (Q
8) source electrode (S) interconnect.The the 5th to the 8th field effect transistor (Q
5～Q
8) grid (G) respectively with the 5th to the 8th resistance (R
5～R
8) an end be connected.The 5th field effect transistor (Q
5) source electrode (S) and the 7th field effect transistor (Q
7) drain electrode (D) be connected after again with the first transformer (T
1) first input end 1 be connected.The 6th field effect transistor (Q
6) source electrode (S) and the 8th field effect transistor (Q
8) drain electrode (D) be connected after again with the first transformer (T
1) second input 2 be connected.The B major loop is by the 4th filter capacitor (C
4), the 9th resistance (R
9), the tenth resistance (R
10), the 11 resistance (R
11), the 12 resistance (R
12), the 9th field effect transistor (Q
9), the tenth field effect transistor (Q
10), the 11 field effect transistor (Q
11) and the 12 field effect transistor (Q
12) form.The first input end of B major loop is the 4th filter capacitor (C
4) positive pole, second input of B major loop is the 4th filter capacitor (C
4) negative pole.The 4th filter capacitor (C
4) positive pole and the 9th field effect transistor (Q
9) drain electrode (D) and the tenth field effect transistor (Q
10) drain electrode (D) interconnect after again with the 3rd filter capacitor (C of A major loop
3) negative pole be connected.The 4th filter capacitor (C
4) negative pole and the 11 field effect transistor (Q
11) source electrode (S) and the 12 field effect transistor (Q
12) source electrode (S) connect the negative output terminal of rectifier bridge after interconnecting again.The the 9th to the 12 field effect transistor (Q
9～Q
12) grid (G) respectively with the 9th to the 12 resistance (R
9～R
12) an end be connected.The 9th field effect transistor (Q
9) source electrode (S) and the 11 field effect transistor (Q
11) drain electrode (D) be connected after again with the second transformer (T
2) first input end 1 be connected.The tenth field effect transistor (Q
10) source electrode (S) and the 12 field effect transistor (Q
12) drain electrode (D) join after again with the second transformer (T
2) second input 2 be connected.
A major loop and B major loop with the joining circuit of half-bridge mode (seeing accompanying drawing 4) are in main circuit: the A major loop is by the 5th filter capacitor (C
5), the 6th filter capacitor (C
6), the 13 resistance (R
13), the 14 resistance (R
14), the 15 resistance (R
15), the 16 resistance (R
16), the 13 field effect transistor (Q
13), the 14 field effect transistor (Q
14), the 15 field effect transistor (Q
15) and the 16 field effect transistor (Q
16) form.The first input end of A major loop is the 5th filter capacitor (C
5) positive pole, second input of A major loop is the 6th filter capacitor (C
6) negative pole.The positive output end of rectifier bridge and the 5th filter capacitor (C
5) positive pole and the 13 field effect transistor (Q
13) drain electrode (D) and the 14 field effect transistor (Q
14) drain electrode (D) be connected.The 13 to the 16 field effect transistor (Q
13～Q
16) grid (G) respectively with the 13 to the 16 resistance (R
13～R
16) an end be connected.The 13 field effect transistor (Q
13) source electrode (S) and the 14 field effect transistor (Q
14) source electrode (S) be connected after both with the first transformer (T
1) first input end 1 be connected and with the 15 field effect transistor (Q
15) drain electrode (D) and the 16 field effect transistor (Q
16) drain electrode (D) be connected.The 5th filter capacitor (C
5) negative pole and the 6th filter capacitor (C
6) positive pole join after again with the first transformer (T
1) second input 2 be connected the 6th filter capacitor (C
6) negative pole and the 15 field effect transistor (Q
15) source electrode (S) and the 16 field effect transistor (Q
16) source electrode (S) be connected.The B major loop is by the 7th filter capacitor (C
7), the 8th filter capacitor (C
8), the 17 resistance (R
17), the 18 resistance (R
18), the 19 resistance (R
19), the 20 resistance (R
20), the 17 field effect transistor (Q
17), the 18 field effect transistor (Q
18), the 19 field effect transistor (Q
19) and the 20 field effect transistor (Q
20) form.The first input end of B major loop is the 7th filter capacitor (C
7) positive pole, second input of B major loop is the 8th filter capacitor (C
8) negative pole.The negative output terminal of rectifier bridge and the 8th filter capacitor (C
8) negative pole and the 19 field effect transistor (Q
19) source electrode (S) and the 20 field effect transistor (Q
20) source electrode (S) join.The 17 to the 20 field effect transistor (Q
17～Q
20) grid (G) respectively with the 17 to the 20 resistance (R
17～R
20) an end be connected.The 8th filter capacitor (C
8) positive pole and the 7th filter capacitor (C
7) negative pole join after again with the second transformer (T
2) second input 2 be connected.The 19 field effect transistor (Q
19) drain electrode (D) and the 20 field effect transistor (Q
20) drain electrode (D) join after both with the 17 field effect transistor (Q
17) source electrode (S) and the 18 field effect transistor (Q
18) source electrode (S) join and with the second transformer (T
2) first input end 1 join.The 7th filter capacitor (C
7) positive pole and the 17 field effect transistor (Q
17) drain electrode (D) and the 18 field effect transistor (Q
18) drain electrode (D) join after again with the 6th filter capacitor (C of A major loop
6) negative pole join.
In the described A major loop that is connected with normal shock, full-bridge or half-bridge connected mode, the B major loop, the first to the 20 field effect transistor (Q
1～Q
20) source electrode (S) and the first to the 20 resistance (R
1～R
20) the other end be connected with switching tube driver and control circuit respectively.
Each field effect transistor is all selected the MOSFEF field effect transistor of the voltage of anti-500V-600V for use.
Operation principle of the present invention be the 380V alternating current through the rectifier bridge rectification, use for A, B two major loops behind the capacitor filtering.All switching tubes all have the driver driven in synchronism.In main circuit, the secondary end of the same name of two transformer adopting that A, B two major loops are connected is connected in parallel.If not adopting this method, will cause Voltage unbalance on A, the B two-way electric capacity because of circuit and transformer parameter are inconsistent.For example under Light Condition, if A road transformer loss 8W, B road transformer loss 5W, this will cause on A, the B two-way capacitance voltage seriously uneven, even the breakdown switch pipe, and after adopting secondary parallel connection, when the rising of B road capacitance voltage, then the transformer loss of corresponding A road is sent to A road transformer by B road transformer secondary output by A road transformer secondary output fully, and B road capacitance voltage is descended, A road capacitance voltage rises and reaches balance, and switching tube just can not be breakdown.Technique scheme can be used the switching tube of the voltage of anti-500V-600V in this power supply fully in the high voltage circuit of 380V alternating current input.
The high frequency switch power that the field effect transistor that the invention has the beneficial effects as follows provides a kind of low-voltage is used in high voltage circuit, the power supply of being formed with the above IGBT of former 1000V is compared, and the present invention has frequency height, heating is little, in light weight, volume is little, dynamic response is rapid, cost is low advantage.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a circuit block diagram of the present invention.
Fig. 2 is the structural representation that A of the present invention, B two major loops adopt the normal shock mode to connect.
Fig. 3 is the structural representation that A of the present invention, B two major loops adopt the full-bridge mode to connect.
Fig. 4 is the structural representation that A of the present invention, B two major loops adopt the half-bridge mode to connect.
In the accompanying drawing: 1, power unit; 2, rectifier bridge; 3, A major loop; 4, B major loop; 5, switching tube driver and control circuit; 6, the first transformer T1; 7, the second transformer T2; 8, output circuit.
Embodiment
As shown in Figure 1: the method for attachment of each parts is as follows in main circuit: power unit 1 is connected with rectifier bridge 2.Rectifier bridge 2 is connected with A major loop 3, B major loop 4 respectively.A major loop 3, B major loop 4 all are connected with switching tube driver and control circuit 5.A major loop 3, B major loop 4 respectively with the first transformer T
16 and the second transformer T
27 are connected.The first transformer T
16 and the second transformer T
27 all are connected with output circuit 8.
As shown in Figure 2: the 380V AC power with by the first to the 66 diode V
1-V
6The rectifier bridge of forming joins and makes the 380V alternating current become direct current to A, B two main circuit power supplies.The first filter capacitor C of rectifier bridge and A, B two major loops
1And the second filter capacitor C
2Join and carry out after the filtering for uses such as field effect transistor importing electricity.The A major loop is by the first field effect transistor Q
1, the second field effect transistor Q
2, the first filter capacitor C
1, first resistance R
1, second resistance R
2, the 9th diode V
9With the tenth diode V
10Form.The output termination first transformer T of A major loop
1Outprimary 1,2.The B major loop is by the 3rd field effect transistor Q
3, the 4th field effect transistor Q
4, the second filter capacitor C
2, the 3rd resistance R
3, the 4th resistance R
4, the 11 diode V
11With the 12 diode V
12Connect to form.The output termination second transformer T of B major loop
2Outprimary 1,2.The first transformer T
1The out-secondary 3 and the second transformer T
2Out-secondary 3 join.The first transformer T
1The out-secondary 4 and the second transformer T
2Out-secondary 4 join.The output and the output circuit of first, second two transformer join.Output circuit is by the 7th diode V
7, the 8th diode V
8Form with inductance L.First, second two transformer T
1, T
2End points 3 all with the 7th diode V
7Anode join.First, second two transformer T
1, T
2End points 4 both with the 8th diode V
8Anode join and as the lead-out terminal of this main circuit.Seven, the 8th liang of diode V
7, V
8Negative electrode join with inductance L again after joining.The other end of inductance L is as another lead-out terminal of this main circuit.This circuit is the circuit diagram that A in the main circuit, B two major loops adopt the normal shock method to be connected.
As shown in Figure 3: the A major loop is by the 5th to the 84 field effect transistor Q
5, Q
6, Q
7, Q
8, the 3rd filter capacitor C
3With the 5th to the 84 resistance R
5, R
6, R
7, R
8Connect to form.The B major loop is by the 9th to the 12 field effect transistor Q
9, Q
10, Q
11, Q
12, the 4th filter capacitor C
4With the 9th to the 12 resistance R
9, R
10, R
11, R
12Connect to form.The first transformer T
1The centre tap 5 and the second transformer T
2Centre tap 5 be connected.The 7th diode V
7, the 8th diode V
8The negative electrode back that joins connect with inductance L afterwards as the positive output end of main circuit.The first transformer T
1With the second transformer T
2Centre tap 5 as the negative output terminal of this main circuit.The components and parts of other circuit parts of this circuit and method of attachment are with shown in Figure 2 identical.This circuit is the circuit diagram that A in the main circuit, B two loops adopt the full-bridge method to be connected.
As shown in Figure 4: the A major loop is by the 13 to the 16 field effect transistor Q
13, Q
14, Q
15, Q
16, the 5th filter capacitor C
5, the 6th filter capacitor C
6With the 13 to the 16 resistance R
13, R
14, R
15, R
16Connect to form.The B major loop is by the 17 to the 24 field effect transistor Q
17, Q
18, Q
19, Q
20, the 7th filter capacitor C
7, the 8th filter capacitor C
8With the 17 to the 24 resistance R
17, R
18, R
19, R
20Connect to form.The components and parts of other circuit parts of this circuit and method of attachment are with shown in Figure 2 identical.The components and parts of transformer secondary output coil and output circuit and method of attachment are identical as shown in Figure 3.This circuit is the circuit diagram that A in the main circuit, B two major loops adopt semi-bridge method to be connected.
As Fig. 2, Fig. 3 or shown in Figure 4: in the described A major loop that is connected with normal shock, full-bridge or half-bridge connected mode, the B major loop, the first to the 20 field effect transistor (Q
1～Q
20) grid (G) all with corresponding the first to the 20 a resistance (R
1～R
20) be connected.The first to the 20 field effect transistor (Q
1～Q
20) source electrode (S) and the first to the 20 resistance (R
1～R
20) the other end be connected with switching tube driver and control circuit respectively.
Each field effect transistor is all selected the MOSFEF field effect transistor of the voltage of anti-500V-600V for use.
Claims (6)
1, a kind of high frequency switch power, it is made up of 1 main circuit; This main circuit includes power unit, rectifier bridge, A major loop, B major loop, switching tube driver and control circuit, the first transformer (T
1), the second transformer (T
2); With the first transformer (T
1) and the second transformer (T
2) the circuit that is connected of output be output circuit; The input of power unit and rectifier bridge is connected, and described power unit adopts 380V alternating current input power supply; Rectifier bridge is formed and the 380V alternating current is become direct current by six diodes and uses for main circuit; It is characterized in that: the positive output end of rectifier bridge is connected with the first input end of A major loop, the negative output terminal of rectifier bridge is connected with second input of B major loop, second input of A major loop is connected with the first input end of B major loop, and A major loop, B major loop adopt normal shock, full-bridge or half-bridge connected mode to be connected; The A major loop all is connected with switching tube driver and control circuit with the B major loop; The output of A major loop and the first transformer (T in the main circuit
1) input be connected the output of B major loop and the second transformer (T in the main circuit
2) input be connected; First transformer (the T
1) and the second transformer (T
2) the number of turn of primary coil identical, the number of turn of secondary coil is also identical; First transformer (the T
1) and the second transformer (T
2) the mode that is connected of secondary employing end of the same name join, be connected with the 7th diode (V7) again after promptly two ends of the same name are connected, be connected with the 8th diode (V8) again after two other end of the same name is connected; First transformer (the T in full-bridge and half-bridge connected mode
1) and the second transformer (T
2) centre tap directly be connected; Described output circuit is made up of the 7th diode (V7), the 8th diode (V8) and filter inductance, the first transformer (T
1) and the second transformer (T
2) output after the 7th diode (V7) and the 8th diode (V8) rectification, be connected again respectively, and then after filter inductance filtering as the output of main circuit.
2, high frequency switch power according to claim 1 is characterized in that: the A major loop with the B major loop with the circuit that the normal shock mode is connected is in main circuit: the A major loop is by the first filter capacitor (C
1), the 9th diode (V
9), the tenth diode (V
10), the first resistance (R
1), the second resistance (R
2), the first field effect transistor (Q
1) and the second field effect transistor (Q
2) form; The first input end of A major loop is the first filter capacitor (C
1) positive pole, second input of A major loop is the first filter capacitor (C
1) negative pole, the positive output end of rectifier bridge and the first filter capacitor (C
1) positive pole, the first field effect transistor (Q
1) drain electrode (D), the tenth diode (V
10) negative electrode join; First filter capacitor (the C
1) negative pole, the 9th diode (V
9) anode, the second field effect transistor (Q
2) source electrode (S) interconnect; First to the second field effect transistor (Q
1～Q
2) grid (G) respectively with first to the second resistance (R
1～R
2) an end be connected the 9th diode (V
9) negative electrode respectively with the first field effect transistor (Q
1) source electrode (S) join after again with the first transformer (T
1) first input end (1) join; The tenth diode (V
10) the anode and the second field effect transistor (Q
2) drain electrode (D) join after again with the first transformer (T
1) second input (2) join; The B major loop is by the second filter capacitor (C
2), the 11 diode (V
11), the 12 diode (V
12), the 3rd resistance (R
3), the 4th resistance (R
4), the 3rd field effect transistor (Q
3) and the 4th field effect transistor (Q
4) form; The first input end of B major loop is the second filter capacitor (C
2) positive pole, second input of B major loop is the second filter capacitor (C
2) negative pole, the negative output terminal of rectifier bridge and the second filter capacitor (C
2) negative pole, the 11 diode (V
11) anode, the 4th field effect transistor (Q
4) source electrode (S) join the second filter capacitor (C
2) positive pole, the 3rd field effect transistor (Q
3) drain electrode (D), the 12 diode (V
12) negative electrode interconnect after again with the A major loop in the first filter capacitor (C
1) negative pole be connected; The the 3rd to the 4th field effect transistor (Q
3～Q
4) grid (G) respectively with the 3rd to the 4th resistance (R
3～R
4) an end be connected the 11 diode (V
11) negative electrode and the 3rd field effect transistor (Q
3) source electrode (S) be connected after again with the second transformer (T
2) first input end (1) join the 12 diode (V
12) anode and the 4th field effect transistor (Q
4) drain electrode (D) be connected after again with the second transformer (T
2) second input (2) join.
3, high frequency switch power according to claim 1 is characterized in that: the A major loop with the B major loop with the circuit that the full-bridge mode is connected is in main circuit: the A major loop is by the 3rd filtered electrical (C
3), the 5th resistance (R
5), the 6th resistance (R
6), the 7th resistance (R
7), the 8th resistance (R
8), the 5th field effect transistor (Q
5), the 6th field effect transistor (Q
6), the 7th field effect transistor (Q
7), the 8th field effect transistor (Q
8) form, the first input end of A major loop is the 3rd filter capacitor (C
3) positive pole, second input of A major loop is the 3rd filter capacitor (C
3) negative pole, the positive output end of rectifier bridge and the 3rd filter capacitor (C
3) positive pole, the 5th field effect transistor (Q
5) drain electrode (D) and the 6th field effect transistor (Q
6) drain electrode (D) join the 3rd filter capacitor (C
3) negative pole and the 7th field effect transistor (Q
7) source electrode (S), the 8th field effect transistor (Q
8) source electrode (S) interconnect the 5th to the 8th field effect transistor (Q
5～Q
8) grid (G) respectively with the 5th to the 8th resistance (R
5～R
8) an end be connected the 5th field effect transistor (Q
5) source electrode (S) and the 7th field effect transistor (Q
7) drain electrode (D) be connected after again with the first transformer (T
1) first input end (1) be connected the 6th field effect transistor (Q
6) source electrode (S) and the 8th field effect transistor (Q
8) drain electrode (D) be connected after again with the first transformer (T
1) second input (2) be connected; The B major loop is by the 4th filter capacitor (C
4), the 9th resistance (R
9), the tenth resistance (R
10), the 11 resistance (R
11), the 12 resistance (R
12), the 9th field effect transistor (Q
9), the tenth field effect transistor (Q
10), the 11 field effect transistor (Q
11) and the 12 field effect transistor (Q
12) form; The first input end of B major loop is the 4th filter capacitor (C
4) positive pole, second input of B major loop is the 4th filter capacitor (C
4) negative pole, the 4th filter capacitor (C
4) positive pole and the 9th field effect transistor (Q
9) drain electrode (D) and the tenth field effect transistor (Q
10) drain electrode (D) interconnect after again with the 3rd filter capacitor (C of A major loop
3) negative pole be connected the 4th filter capacitor (C
4) negative pole and the 11 field effect transistor (Q
11) source electrode (S) and the 12 field effect transistor (Q
12) source electrode (S) connect the negative output terminal of rectifier bridge, the 9th to the 12 field effect transistor (Q after interconnecting again
9～Q
12) grid (G) respectively with the 9th to the 12 resistance (R
9～R
12) an end be connected the 9th field effect transistor (Q
9) source electrode (S) and the 11 field effect transistor (Q
11) drain electrode (D) be connected after again with the second transformer (T
2) first input end (1) be connected the tenth field effect transistor (Q
10) source electrode (S) and the 12 field effect transistor (Q
12) drain electrode (D) join after again with the second transformer (T
2) second input (2) be connected.
4, high frequency switch power according to claim 1 is characterized in that: the A major loop with the B major loop with the circuit that the half-bridge mode is connected is in main circuit: the A major loop is by the 5th filter capacitor (C
5), the 6th filter capacitor (C
6), the 13 resistance (R
13), the 14 resistance (R
14), the 15 resistance (R
15), the 16 resistance (R
16), the 13 field effect transistor (Q
13), the 14 field effect transistor (Q
14), the 15 field effect transistor (Q
15) and the 16 field effect transistor (Q
16) form; The first input end of A major loop is the 5th filter capacitor (C
5) positive pole, second input of A major loop is the 6th filter capacitor (C
6) negative pole, the positive output end of rectifier bridge and the 5th filter capacitor (C
5) positive pole and the 13 field effect transistor (Q
13) drain electrode (D) and the 14 field effect transistor (Q
14) drain electrode (D) be connected the 13 to the 16 field effect transistor (Q
13～Q
16) grid (G) respectively with the 13 to the 16 resistance (R
13～R
16) an end be connected the 13 field effect transistor (Q
13) source electrode (S) and the 14 field effect transistor (Q
14) source electrode (S) be connected after both with the first transformer (T
1) first input end (1) be connected and with the 15 field effect transistor (Q
15) drain electrode (D) and the 16 field effect transistor (Q
16) drain electrode (D) be connected the 5th filter capacitor (C
5) negative pole and the 6th filter capacitor (C
6) positive pole join after again with the first transformer (T
1) second input (2) be connected the 6th filter capacitor (C
6) negative pole and the 15 field effect transistor (Q
15) source electrode (S) and the 16 field effect transistor (Q
16) source electrode (S) be connected; The B major loop is by the 7th filter capacitor (C
7), the 8th filter capacitor (C
8), the 17 resistance (R
17), the 18 resistance (R
18), the 19 resistance (R
19), the 20 resistance (R
20), the 17 field effect transistor (Q
17), the 18 field effect transistor (Q
18), the 19 field effect transistor (Q
19) and the 20 field effect transistor (Q
20) form; The first input end of B major loop is the 7th filter capacitor (C
7) positive pole, second input of B major loop is the 8th filter capacitor (C
8) negative pole, the negative output terminal of rectifier bridge and the 8th filter capacitor (C
8) negative pole and the 19 field effect transistor (Q
19) source electrode (S) and the 20 field effect transistor (Q
20) source electrode (S) join the 17 to the 20 field effect transistor (Q
17～Q
20) grid (G) respectively with the 17 to the 20 resistance (R
17～R
20) an end be connected the 8th filter capacitor (C
8) positive pole and the 7th filter capacitor (C
7) negative pole join after again with the second transformer (T
2) second input (2) be connected the 19 field effect transistor (Q
19) drain electrode (D) and the 20 field effect transistor (Q
20) drain electrode (D) join after both with the 17 field effect transistor (Q
17) source electrode (S) and the 18 field effect transistor (Q
18) source electrode (S) join and with the second transformer (T
2) first input end (1) join the 7th filter capacitor (C
7) positive pole and the 17 field effect transistor (Q
17) drain electrode (D) and the 18 field effect transistor (Q
18) drain electrode (D) join after again with the 6th filter capacitor (C of A major loop
6) negative pole join.
5, according to the described high frequency switch power of each claim in the claim 2,3,4, it is characterized in that: the other end of the source electrode of each field effect transistor (S) and each resistance is connected with switching tube driver and control circuit respectively.
6, according to the described high frequency switch power of each claim in the claim 2,3,4, it is characterized in that: each field effect transistor is all selected the MOSFEF field effect transistor of the voltage of anti-500V-600V for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100653733A CN100530924C (en) | 2004-11-24 | 2004-11-24 | HF switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100653733A CN100530924C (en) | 2004-11-24 | 2004-11-24 | HF switching power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1780130A CN1780130A (en) | 2006-05-31 |
| CN100530924C true CN100530924C (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100653733A Expired - Fee Related CN100530924C (en) | 2004-11-24 | 2004-11-24 | HF switching power supply |
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| CN (1) | CN100530924C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101572497B (en) * | 2009-05-21 | 2011-02-09 | 捷普科技（上海）有限公司 | Method for building industrial AC/DC wide range input power module |
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2004
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Also Published As
| Publication number | Publication date |
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| CN1780130A (en) | 2006-05-31 |
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