How to solve the problem of power IC chip electronic chip heating?
How to solve the problem of power IC chip electronic chip heating?
If the power IC chip is hot, it means that the chip has been working abnormally. If it is hot for a long time, it is easy to burn out. There are two main reasons for the power chip to heat up: 1. The load current is too large; 2. The heat dissipation treatment is not done well, so the power engineer needs to make corresponding design improvements from the design source, and even needs to re-select the power chip. Generally speaking, there are two ways to reduce the heat of power chips: "open source" and "throttling". So how to solve the problem of power IC chip electronic chip heating? Data storage chip
Adding heat sink to reduce the heat generation of power chip-"open source"
If the current consumption is within the specifications of the power chip, but the heat is still serious, it means that the heat dissipation is not good. There are basically two ways to dissipate heat of power chips: 1. In-line package and heat sink; 2, using patch packaging, increasing heat dissipation copper skin, high power applications generally need to install heat sinks on power chips.
Increase the heat dissipation area on PCB-"open source"
When designing PCB wiring, the wiring of power supply part is generally designed to be thicker. At this time, we need to add copper foil for heat dissipation as much as possible, and add heat dissipation holes on PCB when necessary. Memory chip
Reducing load current and reducing heat generation of power chip-"throttling"
Among the output parameters of power chip, two parameters are very critical: 1. Output voltage; 2. Output current. When designing electronic products, we must give full consideration to leaving a certain margin for power chips to prevent serious fever. If the load current evaluation is small, when the board is running, the power chip is almost fully loaded, and the output will cause serious heat. Generally speaking, the output current z of the power chip is 1A, and it should not exceed 800mA when in use, and it should be controlled within 500mA. Semiconductor chip
The power supply part is the key part of the circuit board. Through "open source" and "throttling", the heat of power chip can be effectively reduced. Chargers/adapters all use high-efficiency power supply chips, which will also generate heat during charging. It is normal within its rated power output range.