IGBT module precautions
Author: Shenzhen Yuan Zhi Electronics Co., Ltd.Time:2018-03-01 17:15:20Views:2199【SML】
IGBT module terms and characteristics of terms
Collector,
emitter in the exchange between the short-circuit state, in the gate,
emitter and collector, emitter plus a specified voltage, the gate,
em...
label:
IGBT module terms and characteristics of terms
Collector,
emitter in the exchange between the short-circuit state, in the gate,
emitter and collector, emitter plus a specified voltage, the gate,
emitter capacitance.
IGBT module on the use of precautions
1. IGBT module selection
When using an IGBT module, it is necessary to carefully consider
which voltage and current specifications of the IGBT module to use.
a. Current specification
When the IGBT module collector current increases, the VCE (-) rises and the resulting nominal loss increases. At the same time, switching losses increase, the original fever increased. Therefore,
according to the rated loss, the switching loss of the heat generated,
the control device junction temperature (Tj) below 150oC (usually for
safety reasons below 125oC), please use the following current collector
is appropriate. Especially
when used as a high-frequency switch, attention must be paid to IGBT
module due to the increased switching loss and heat generation. In general, to control the maximum collector current below the
rated DC current, it is recommended from an economic point of view.
b. Voltage specifications
IGBT
Module Voltage Specifications IGBT Module Precautions The input power
of the device to be used, that is, the mains supply voltage, is tight. According to the purpose of use, and refer to this table, select the appropriate components.
2 to prevent static electricity
The
VGE voltage of the IGBT is ± 20V. When the IGBT module is subjected to a
voltage exceeding the withstand voltage, the voltage between the gate
and the emitter can not exceed the withstand voltage due to the risk of
damage Please pay attention to this point.
In
the case of using the device, if the grid circuit is not suitable or
the grid circuit is completely inoperable (the pole is open), if the
voltage is applied to the main circuit, the IGBT will be damaged. To
prevent such damage , Should be a gate emitter between a 10kΩ left and right resistance is appropriate.
In
addition, since the IGBT module is a MOS structure, attention must be
paid to the IGBT module precautions for static electricity. Therefore, please note the following points:
1) When using the module, do not touch the drive terminal section while holding the sub-assembly.
2) When connecting the module of the drive terminal with the
conductive material, do not connect the module before the wiring is
ready.
3) try to operate in the case of a good grounding floor.
4) When it is necessary to touch the module terminals, first
discharge the static electricity on the human body or clothing and then
touch.
5) Leakage between welding machine and welding tank during
welding operation Cautions for IGBT module and IGBT module easily lead
to static voltage. To prevent the generation of static electricity,
first place the welding machine in a good grounding state.
6) Containers for parts, please use non-static containers.
3. Parallel question
Used for controlling large current such as high-capacity
inverters When using IGBT modules, multiple devices can be used in
parallel.
In
parallel, it is important that the IGBT modules, IGBT modules, be used
to allow equal current to flow through each device. If the current
balance breaks down then the device that is over-powered may be damaged. In order to balance the current in parallel, appropriate changes to the characteristics of the device and wiring methods. E.g. It is important to choose the same parallel connection of VCE (sat) of the device.
4. Other precautions
1)
Keep the temperature and temperature of the semiconductor original
place, keep the precautions of IGBT module and IGBT module at room
temperature and normal humidity, and should not deviate too much. The provisions of the room temperature is 5-35 ℃, the provisions of the normal wet 45-75%.
2) Measurement of surge voltage at ON and OFF, etc., at the terminal.
2018-03-01
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