Driving circuit, power module and electrical equipment
A driving circuit and driving sub-circuit technology, applied in the direction of output power conversion device, irreversible DC power input into AC power output, electrical components, etc., can solve the difficult size of IPM layout, unfavorable optimal drive mode, It is difficult for gate resistors to meet different needs at the same time
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Embodiment 1
[0027] Such as figure 2 As shown, a driving circuit 200 of the present invention includes: a control circuit 10 and at least two parallel driving sub-circuits 20 .
[0028] The control circuit 10 is used to receive a control signal, the control signal includes a control sub-signal corresponding to each driving sub-circuit 20, and outputs the control sub-signal to the corresponding driving sub-circuit, so as to control the corresponding driving sub-circuit to be turned on or off;
[0029] The driving sub-circuit 20 is used to turn on and provide driving current to the power device 30 of the IPM according to the received control sub-signal, or to turn off and not provide driving current according to the received control sub-signal.
[0030] image 3 A schematic diagram of a driving circuit of a power module of the present invention is shown; as image 3 As shown, each driving sub-circuit 20 includes a power input terminal 201 , a power output terminal 202 , a current output t...
Embodiment 2
[0037] The driving capability and quantity of the driving sub-circuits can be individually designed according to the actual situation. The high-voltage driving circuit of the intelligent power module IPM in another embodiment of the present invention includes:
[0038] A first driving sub-circuit, which includes a first PMOS driving transistor and a first NMOS driving transistor;
[0039] The second driving sub-circuit includes a second PMOS driving transistor and a second NMOS driving transistor;
[0040] A third driving sub-circuit, which includes a third PMOS driving transistor and a third NMOS driving transistor;
[0041] A fourth driving sub-circuit, which includes a fourth PMOS driving transistor and a fourth NMOS driving transistor;
[0042] Wherein, the driving current of the first PMOS driving transistor is a first current value, the driving currents of the second PMOS driving transistor and the third PMOS driving transistor are twice the first current value, and the...
Embodiment 3
[0062] A power module according to another embodiment of the present invention includes the drive circuit in each of the above embodiments.
[0063] In some embodiments of the present invention, the power module may also include a power device;
[0064] The driving circuit is connected to the power device and is used to turn on or turn off the power device.
[0065] Specifically, the power device is an IGBT switch or a MOSFET switch.
[0066] In the power module of the embodiment of the present invention, the driving sub-circuits in the high-voltage driving circuit can be freely combined to provide combined driving capabilities. The realization of different driving capabilities makes the high-voltage driving circuit do not need driving resistors when driving the power device. , which reduces the layout difficulty and size of the IPM, and also reduces the number of IPM packaged components, reduces the packaging process, and reduces the difficulty of packaging. Furthermore, mu...
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