IPM overcurrent and over-temperature protection circuit
An over-temperature protection circuit, over-current technology, applied in emergency protection circuit devices, electrical components and other directions, can solve the problems of complex circuit structure, waste of pin resources, etc., achieve simple circuit structure, good stability, reduce the number of purchases and The effect of cost of use
Pending Publication Date: 2019-04-19
SHANDONG LONGERTEK TECH CO LTD
View PDF1 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The over-temperature protection circuit and over-current protection circuit of this patent respectively occupy one input pin of the main controller (single-chip microcomputer), resulting in a waste of pin resources, and its circuit structure is relatively complicated
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0026] Such as figure 1 with figure 2 As shown, a kind of IPM over-current and over-temperature protection circuit comprises, is used for the signal input end 4 that is connected with IPM module 1, is used for the signal output end 5 that is connected with MCU module 3, and is connected between signal input end 4 and The comparison circuit 2 between the signal output terminals 5 . The model of the IPM module 1 described in this embodiment is IKCM15L60, but it is not limited thereto. The IPM module 1 of the IKCM15L60 type outputs temperature protection and overcurrent protection as a pin VFO. A thermistor is provided inside it, and the thermistor is connected in series between the pin VFO and the pin VSS, wherein the pin VSS is grounded.
[0027] The comparison circuit 2 includes a reference voltage output circuit, a ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an IPM overcurrent and over-temperature protection circuit. The IPM overcurrent and over-temperature protection circuit includes a signal input terminal which is connected toan IPM module, a signal output terminal which is connected to an MCU module, a comparison circuit which is connected between the signal input terminal and the signal output terminal, and a comparator,wherein the comparison circuit includes a reference voltage output circuit, and is connected with a power supply; one input terminal of the comparator is connected with the reference voltage output circuit to receive a reference voltage signal, and the other input terminal of the comparator is connected with the IPM module through the signal input terminal; the output terminal of the comparator is connected with the MCU module through the signal output module; the signal input terminal is connected with a temperature detection and overcurrent signal shared output port of the IPM module; and the comparator compares the reference voltage with the voltage of the signal input terminal, and transmits the comparison result to the MCU module to enable the MCU module to control the operating state of the IPM module according to the comparison result. The IPM overcurrent and over-temperature protection circuit only occupies one pin of a singlechip, and can provide protection for IPM when encountering overcurrent and over-temperature.
Description
technical field [0001] The invention relates to an IPM protection circuit, in particular to an IPM overcurrent and overtemperature protection circuit. Background technique [0002] With the development of the power electronics industry, the use of IPM is becoming wider and wider. Compared with ordinary IGBT+ drive solutions, engineers pay more attention to this intelligent and miniaturized IPM solution. When the IPM is used, it needs to be protected. In the case of over-current and over-temperature, it is necessary to stop the IPM from working to avoid its damage. The Chinese invention patent with application number 201620760332.4 discloses an inverter protection circuit based on DSP and IPM modules, including: main controller circuit, IPM module circuit, overvoltage protection circuit, overtemperature protection circuit, overcurrent protection circuit and fault Block circuit; it uses TI's DSP control chip TMS320LF2406 and IR's intelligent power module IPM module IRAMS10UP6...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02H7/12
CPCH02H7/12
Inventor 杜鹏罗帅马英华张永利
Owner SHANDONG LONGERTEK TECH CO LTD