CN101154890A - Power supplying converter with failure-to-safety characteristic - Google Patents
Power supplying converter with failure-to-safety characteristic Download PDFInfo
- Publication number
- CN101154890A CN101154890A CNA2006101134225A CN200610113422A CN101154890A CN 101154890 A CN101154890 A CN 101154890A CN A2006101134225 A CNA2006101134225 A CN A2006101134225A CN 200610113422 A CN200610113422 A CN 200610113422A CN 101154890 A CN101154890 A CN 101154890A
- Authority
- CN
- China
- Prior art keywords
- circuit
- rectification
- low frequency
- sends
- signal
- 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.)
- Granted
Links
- 238000001914 filtration Methods 0.000 claims abstract description 30
- 238000002955 isolation Methods 0.000 claims description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 230000009466 transformation Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
Images
Abstract
The present invention discloses a power supply converter with a failure-to-safety character, which comprises the following components: a differential circuit which is used to receive the low frequency input pulse and transmits to the low frequency isolating transformer when the pulse has been amplified; a low frequency rectifying and wave-filtering circuit which receive the signal transmitted from the low frequency isolating transformer, supply power to the high frequency multi-resonant circuit after current rectifying and wave filtering, the high frequency multi-resonant circuit converts the low frequency signal to the high frequency signal which is transmitted to the high frequency isolating transformer after amplifying; a high frequency rectifying and wave-filtering circuit which receive the signal transmitted by the high frequency isolating transformer and outputs the signal after current rectifying and wave filtering. The whole circuit is failure-secure as the electric power of the high frequency oscillator is supplied by the low frequency pulse, and no error will be output from the electric power even if any device in the circuit is damaged.
Description
Technical field
The present invention relates to low power DC-DC converter, particularly a kind of supply convertor with failure-to-safety characteristic.
Background technology
For satisfying fail-safe key request, be that any internal components damage can not cause the power supply output driving current, the circuit of small-power DC-DC converter can not be designed to the mode of monostable trigger control external power switch, enable because when monostable trigger damages, might export always, and then causing external power switch always for closed, this situation does not allow to take place.
As shown in Figure 1, in the prior art, when circuit input end had the pulse input, two transistors were recommended output, are output as direct current behind transformer and bridge rectifier.When input when being not pulse (may be-15V, 0V or unsettled), the former limit of transformer does not have alternating current to be passed through, and output does not have voltage output.In like manner, any device failure in circuit, under input no pulse condition, the former limit of transformer does not have alternating current to be passed through, the output of output no-voltage.
But the subject matter of sort circuit is to cause volume of transformer excessive because the input pulse frequency is low, thereby makes the overall volume of converter bigger than normal, and input power supply needs ± 15VDC dual power supply.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of supply convertor with failure-to-safety characteristic, and output does not have output voltage when the output enable signal does not exist.
Technical scheme is as follows:
Supply convertor with failure-to-safety characteristic comprises:
Differential circuit is used to receive the low frequency input pulse, sends to the low frequency isolation transformer after amplifying;
Low frequency rectification and filter circuit, receive the signal that the low frequency isolation transformer sends, after rectification and filtering, give the power supply of high frequency multi-resonant oscillating circuit, the power supply of described high frequency multi-resonant oscillating circuit is provided by low-frequency pulse, this high frequency multi-resonant oscillating circuit changes low frequency signal into high-frequency signal, and high-frequency signal sends to high-frequency isolation transformer after amplifying;
High-frequency rectification and filter circuit receive the signal that high-frequency isolation transformer sends, and export after rectification and filtering.
Preferably, described low frequency isolation transformer comprises the 4th isolating transformer and the 5th isolating transformer, described high-frequency isolation transformer comprises the 6th isolating transformer, differential circuit comprises the 3rd differential circuit and the 4th differential circuit, the low frequency input pulse comprises the first low frequency input pulse and the second low frequency input pulse, wherein
The 3rd differential circuit, be used to receive the first low frequency input pulse, the first low frequency input pulse sends to the 4th MOS switching tube after differential amplifies, send to the 4th isolating transformer then, to the power supply of the second high frequency multi-resonant oscillating circuit, the two or three differential circuit and the 4th MOS switching tube are powered by external power after the 4th rectification and filter circuit rectification and filtering;
The 4th differential circuit, be used to receive the second low frequency input pulse, the second low frequency input pulse sends to the 5th MOS switching tube after differential amplifies, send to the 5th isolating transformer then, to the power supply of the second high frequency multi-resonant oscillating circuit, the 4th differential circuit and the 5th MOS switching tube are powered by external power after the 5th rectification and filter circuit rectification and filtering;
The described second high frequency multi-resonant oscillating circuit vibrates when the 4th rectification and filter circuit and the 5th rectification and filter circuit all have output, sends high-frequency signal to second amplifying circuit;
Second amplifying circuit receives the high-frequency signal of the second high frequency multi-resonant oscillating circuit, sends to the 6th MOS switching tube after amplifying, and second amplifying circuit and the 6th MOS switching tube are powered by external power;
The 6th isolating transformer receives the signal of the 6th MOS switching tube, through sending to second voltage stabilizing circuit as output after the 6th rectification and filter circuit, the second voltage stabilizing circuit rectification and the filtering.
Preferably, the signal of described second voltage stabilizing circuit transmission is exported through second short-circuit protection circuit.
Preferably, described low frequency isolation transformer comprises first isolating transformer and second isolating transformer, described high-frequency isolation transformer comprises the 3rd isolating transformer, differential circuit comprises first differential circuit and second differential circuit, the low frequency input pulse comprises the first low frequency input pulse and the second low frequency input pulse, wherein
First differential circuit receives the first low frequency input pulse, sends to a MOS switching tube after differential amplifies, and first differential circuit and a MOS switching tube are powered by external power;
First isolating transformer receives the signal of a MOS switching tube, sends to first rectification and filter circuit and carry out filtering and rectification after transformation;
Second differential circuit receives the second low frequency input pulse, sends to the 2nd MOS switching tube after differential amplifies, and second differential circuit and the 2nd MOS switching tube are by first rectification and filter circuit power supply;
Second isolating transformer, the signal that the 2nd MOS switching tube is sent carry out transformation and send to second rectification and filter circuit carries out rectification and filtering, power to the first high frequency multi-resonant oscillating circuit;
The first high frequency multi-resonant oscillating circuit receives second rectification and filter circuit and carries out rectification and filtered signal, sends after changing high-frequency signal into;
First amplifying circuit receives the signal that the first high frequency multi-resonant oscillating circuit sends, and sends to the 3rd MOS switching tube after amplifying, and described first amplifying circuit and the 3rd MOS switching tube are powered by external power;
The 3rd isolating transformer receives the signal of the 3rd MOS switching tube, sends to the 3rd rectification and filter circuit after transformation, sends to first voltage stabilizing circuit as output after rectification and filtering.
Preferably, the signal of described first voltage stabilizing circuit transmission is exported through first short-circuit protection circuit.
In the supply convertor of the present invention, because the power supply of high-frequency generator is provided by low-frequency pulse, so entire circuit is fail-safe, even wherein any device failure, out-put supply can not lead to errors.In addition, owing to adopt power supply or the trigger condition of low-frequency pulse signal as an oscillating circuit, the switching signal that generates a high frequency is controlled the HF switch pipe, controls high frequency transformer by this HF switch pipe again, has therefore reduced the volume of converter.
When input has the pulse input, recommend output, after transformer and rectification, be output as direct current.When input when being not pulse (may be-15V, 0V or unsettled), the former limit of transformer does not have alternating current to be passed through, and output does not have voltage output.In like manner, any device failure in circuit, under input no pulse condition, the former limit of transformer does not have alternating current to be passed through, the output of output no-voltage.
Description of drawings
Fig. 1 failure safe DC-DC power principle figure that is subjected to microprocessor controls of the prior art;
Fig. 2 is the circuit theory diagrams of one of preferred embodiment of the present invention;
Fig. 3 is two circuit theory diagrams of the preferred embodiment of the present invention.
Embodiment
Have in the supply convertor of failure-to-safety characteristic, differential circuit receives the low frequency input pulse, sends to the low frequency isolation transformer after differential amplifies; Low frequency rectification and filter circuit receive the signal that the low frequency isolation transformer sends, and send to the high frequency multi-resonant oscillating circuit and be converted to high-frequency signal after rectification and filtering, and this high-frequency signal sends to high-frequency isolation transformer after amplifying; High-frequency rectification and filter circuit receive the signal that high-frequency isolation transformer sends, and form out-put supply after rectification and filtering.
With reference to the accompanying drawings the preferred embodiments of the present invention are described in detail.
One of preferred embodiment
As shown in Figure 2, first isolating transformer and second isolating transformer are the low frequency isolation transformer, the 3rd isolating transformer is a high-frequency isolation transformer, the low frequency input pulse comprises the first low frequency input pulse and the second low frequency input pulse, low frequency rectification and filter circuit comprise first rectification and filter circuit and second rectification and filter circuit, and the 3rd rectification and filter circuit are high-frequency rectification and filter circuit.
First differential circuit and a MOS switching tube are powered by external power, and first differential circuit receives the first low frequency input pulse, send to a MOS switching tube after differential amplifies.The one MOS switching tube judges whether the first low frequency input pulse of input meets trigger condition, if meet trigger condition then this first low frequency input pulse is sent to first isolating transformer.First isolating transformer receives the first low frequency input pulse that a MOS switching tube sends, send to first rectification and filter circuit and carry out filtering and rectification after transformation, the output signal after filtering and the rectification is as the power supply of second differential circuit and the 2nd MOS switching tube.
Second differential circuit receives the second low frequency input pulse, after amplifying, differential sends to the 2nd MOS switching tube, the 2nd MOS switching tube judges whether the second low frequency input pulse of input meets trigger condition, if meet trigger condition then this second low frequency input pulse is sent to second isolating transformer.Second differential circuit and the 2nd MOS switching tube are by first rectification and filter circuit power supply and triggering.
The signal that second isolating transformer sends the 2nd MOS switching tube carries out transformation and sends to second rectification and filter circuit carries out rectification and filtering, and rectification and filtered signal are powered to the first high frequency multi-resonant oscillating circuit.The first high frequency multi-resonant oscillating circuit carries out rectification and filtering after receiving the signal that second rectification and filter circuit send, and sends to first amplifying circuit after changing input signal into high-frequency signal.After first amplifying circuit receives the signal of first high frequency multi-resonant oscillating circuit transmission, after amplifying, send to the 3rd MOS switching tube.First amplifying circuit and the 3rd MOS switching tube are by external power power supply and triggering.
The 3rd isolating transformer is a high-frequency isolation transformer; after receiving the signal of the 3rd MOS switching tube, transformation sends to the 3rd rectification and filter circuit, sends to first voltage stabilizing circuit after rectification and filtering; and then, form out-put supply through the output of first short-circuit protection circuit.In this preferred embodiment, what first short-circuit protection circuit was exported is the DC power supply of 25V.
Two of preferred embodiment
The 4th isolating transformer and the 5th isolating transformer are the low frequency isolation transformer as shown in Figure 3, the 6th isolating transformer is a high-frequency isolation transformer, differential circuit comprises the 3rd differential circuit and the 4th differential circuit, and the low frequency input pulse comprises the first low frequency input pulse and the second low frequency input pulse.
The 3rd differential circuit is used to receive the first low frequency input pulse, and the first low frequency input pulse sends to the 4th MOS switching tube after differential amplifies, send to the 4th isolating transformer then, and the 3rd differential circuit and the 4th MOS switching tube are powered by external power.
The 4th differential circuit is used to receive the second low frequency input pulse, and the second low frequency input pulse sends to the 5th MOS switching tube after differential amplifies, send to the 5th isolating transformer then, and the 4th differential circuit and the 5th MOS switching tube are powered by external power.
The 4th rectification and filter circuit receive the signal of the 4th isolating transformer, will send to the second high frequency multi-resonant oscillating circuit after input signal rectification and the filtering, power to the second high frequency multi-resonant oscillating circuit.The 5th rectification and filter circuit receive the signal of the 5th isolating transformer, and input signal is sent to the second high frequency multi-resonant oscillating circuit after rectification and filtering, power to the second high frequency multi-resonant oscillating circuit.The second high frequency multi-resonant oscillating circuit vibrates when the 4th rectification and filter circuit and the 5th rectification and filter circuit all have output, converts low frequency signal to high-frequency signal.
Second amplifying circuit receives the signal of the second high frequency multi-resonant oscillating circuit, sends to the 6th MOS switching tube after amplifying, and second amplifying circuit and the 6th MOS switching tube are powered by external power.The 6th isolating transformer receives the signal of the 6th MOS switching tube, through sending to second voltage stabilizing circuit after the 6th rectification and filter circuit rectification and the filtering, and then forms out-put supply through second short-circuit protection circuit.In this preferred embodiment, out-put supply is the DC power supply of 25V.
In Fig. 2 and the preferred embodiment shown in Figure 3, low-frequency transformer obtains a power supply that power is very little, give the high frequency multi-resonant oscillating circuit power supply of back level, this high-frequency oscillating circuits sends the fixing high-frequency impulse of a duty ratio, the high frequency transformer of control back, this circuit need not the PWM controller, open loop control.Because the power supply of high-frequency oscillating circuits is provided by low-frequency pulse, so entire circuit is fail-safe, promptly wherein any device failure, output 25V can not lead to errors.
Claims (5)
1. the supply convertor with failure-to-safety characteristic is characterized in that, comprising:
Differential circuit is used to receive the low frequency input pulse, sends to the low frequency isolation transformer after amplifying;
Low frequency rectification and filter circuit, receive the signal that the low frequency isolation transformer sends, after rectification and filtering, give the power supply of high frequency multi-resonant oscillating circuit, the power supply of described high frequency multi-resonant oscillating circuit is provided by low-frequency pulse, this high frequency multi-resonant oscillating circuit changes low frequency signal into high-frequency signal, and high-frequency signal sends to high-frequency isolation transformer after amplifying;
High-frequency rectification and filter circuit receive the signal that high-frequency isolation transformer sends, and export after rectification and filtering.
2. the supply convertor with failure-to-safety characteristic according to claim 1, it is characterized in that, described low frequency isolation transformer comprises the 4th isolating transformer and the 5th isolating transformer, described high-frequency isolation transformer comprises the 6th isolating transformer, differential circuit comprises the 3rd differential circuit and the 4th differential circuit, the low frequency input pulse comprises the first low frequency input pulse and the second low frequency input pulse, wherein
The 3rd differential circuit, be used to receive the first low frequency input pulse, the first low frequency input pulse sends to the 4th MOS switching tube after differential amplifies, send to the 4th isolating transformer then, to the power supply of the second high frequency multi-resonant oscillating circuit, the two or three differential circuit and the 4th MOS switching tube are powered by external power after the 4th rectification and filter circuit rectification and filtering;
The 4th differential circuit, be used to receive the second low frequency input pulse, the second low frequency input pulse sends to the 5th MOS switching tube after differential amplifies, send to the 5th isolating transformer then, to the power supply of the second high frequency multi-resonant oscillating circuit, the 4th differential circuit and the 5th MOS switching tube are powered by external power after the 5th rectification and filter circuit rectification and filtering;
The described second high frequency multi-resonant oscillating circuit vibrates when the 4th rectification and filter circuit and the 5th rectification and filter circuit all have output, sends high-frequency signal to second amplifying circuit;
Second amplifying circuit receives the high-frequency signal of the second high frequency multi-resonant oscillating circuit, sends to the 6th MOS switching tube after amplifying, and second amplifying circuit and the 6th MOS switching tube are powered by external power;
The 6th isolating transformer receives the signal of the 6th MOS switching tube, through sending to second voltage stabilizing circuit as output after the 6th rectification and filter circuit, the second voltage stabilizing circuit rectification and the filtering.
3. the supply convertor with failure-to-safety characteristic according to claim 2 is characterized in that, the signal that described second voltage stabilizing circuit sends is exported through second short-circuit protection circuit.
4. the supply convertor with failure-to-safety characteristic according to claim 1, it is characterized in that, described low frequency isolation transformer comprises first isolating transformer and second isolating transformer, described high-frequency isolation transformer comprises the 3rd isolating transformer, differential circuit comprises first differential circuit and second differential circuit, the low frequency input pulse comprises the first low frequency input pulse and the second low frequency input pulse, wherein
First differential circuit receives the first low frequency input pulse, sends to a MOS switching tube after differential amplifies, and first differential circuit and a MOS switching tube are powered by external power;
First isolating transformer receives the signal of a MOS switching tube, sends to first rectification and filter circuit and carry out filtering and rectification after transformation;
Second differential circuit receives the second low frequency input pulse, sends to the 2nd MOS switching tube after differential amplifies, and second differential circuit and the 2nd MOS switching tube are by first rectification and filter circuit power supply;
Second isolating transformer, the signal that the 2nd MOS switching tube is sent carry out transformation and send to second rectification and filter circuit carries out rectification and filtering, power to the first high frequency multi-resonant oscillating circuit;
The first high frequency multi-resonant oscillating circuit receives second rectification and filter circuit and carries out rectification and filtered signal, sends after changing high-frequency signal into;
First amplifying circuit receives the signal that the first high frequency multi-resonant oscillating circuit sends, and sends to the 3rd MOS switching tube after amplifying, and described first amplifying circuit and the 3rd MOS switching tube are powered by external power;
The 3rd isolating transformer receives the signal of the 3rd MOS switching tube, sends to the 3rd rectification and filter circuit after transformation, sends to first voltage stabilizing circuit as output after rectification and filtering.
5. the supply convertor with failure-to-safety characteristic according to claim 4 is characterized in that, the signal that described first voltage stabilizing circuit sends is exported through first short-circuit protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101134225A CN100574075C (en) | 2006-09-27 | 2006-09-27 | Supply convertor with failure-to-safety characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101134225A CN100574075C (en) | 2006-09-27 | 2006-09-27 | Supply convertor with failure-to-safety characteristic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101154890A true CN101154890A (en) | 2008-04-02 |
| CN100574075C CN100574075C (en) | 2009-12-23 |
Family
ID=39256391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101134225A Active CN100574075C (en) | 2006-09-27 | 2006-09-27 | Supply convertor with failure-to-safety characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100574075C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817027A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Failure safe power supply and tractor-trailer train |
| CN109756120A (en) * | 2017-11-08 | 2019-05-14 | 比亚迪股份有限公司 | Safety power supply for train and the train with it |
| CN111478614A (en) * | 2020-04-20 | 2020-07-31 | 四川泛华航空仪表电器有限公司 | Low electromagnetic interference high reliable jet ignition power supply |
| CN112803842A (en) * | 2020-12-25 | 2021-05-14 | 珠海格力电器股份有限公司 | Pulse frequency processing method, circuit, device, storage medium and processor |
-
2006
- 2006-09-27 CN CNB2006101134225A patent/CN100574075C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817027A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Failure safe power supply and tractor-trailer train |
| CN109756120A (en) * | 2017-11-08 | 2019-05-14 | 比亚迪股份有限公司 | Safety power supply for train and the train with it |
| CN109756120B (en) * | 2017-11-08 | 2021-09-21 | 比亚迪股份有限公司 | A train that is used for safe power of train and has it |
| CN111478614A (en) * | 2020-04-20 | 2020-07-31 | 四川泛华航空仪表电器有限公司 | Low electromagnetic interference high reliable jet ignition power supply |
| CN112803842A (en) * | 2020-12-25 | 2021-05-14 | 珠海格力电器股份有限公司 | Pulse frequency processing method, circuit, device, storage medium and processor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100574075C (en) | 2009-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4620151B2 (en) | Non-contact power transmission circuit | |
| CN103715897B (en) | Isolated converter and apply its Switching Power Supply | |
| JP6191020B2 (en) | Switching power supply | |
| CN102598495B (en) | For the feedback circuit of zero-voltage-switching converter | |
| CN104539165A (en) | Capacitive mode detection circuit and method for resonant converter and resonant converter | |
| JP2008173003A (en) | Charging system | |
| CN103095140B (en) | Switching power supply apparatus | |
| CN103887984A (en) | Isolating converter and switching power supply comprising same | |
| CN102868300A (en) | Switching regulator and control device thereof | |
| JP2007159200A (en) | Switching power supply unit | |
| CN100574075C (en) | Supply convertor with failure-to-safety characteristic | |
| US10153699B2 (en) | Control method for power transmitter, power transmitter and noncontact power transfer apparatus | |
| TWI481156B (en) | Power supplying device | |
| JP2003250233A (en) | Non-contact power transmission apparatus | |
| CN108736581A (en) | A kind of radio energy transmission system | |
| CN1945948B (en) | Synchronous rectifying circuit of power converter | |
| CN201846229U (en) | Soft start circuit | |
| CN203660911U (en) | Flyback AC-DC converter | |
| WO2020238306A1 (en) | Dc-ac inverter protection circuit for lithium battery and energy storage device | |
| CN202424283U (en) | Charger based on single-chip three-end TOP22X integrated chip | |
| CN103852676A (en) | Passive contact detection device and method | |
| CN108258814B (en) | Wireless power transmission system | |
| CN201282420Y (en) | HF switch power supply device | |
| US9576477B2 (en) | Electrical equipment and remote control receiving remote signal by electro-magnetic induction | |
| CN203522561U (en) | Full-bridge self-excited combined drive-type switching power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20080402 Assignee: Beijing Helishi Control Technology Co.,Ltd. Assignor: BEIJING HOLLYSYS Co.,Ltd. Contract record no.: X2021990000771 Denomination of invention: Power converter with fail safe characteristics Granted publication date: 20091223 License type: Common License Record date: 20211209 |