The current power management chip manufacturers on the market are different, how to judge a good power management chip or power IC manufacturers IC chip, is the need for users to make a good judgment. Let's take the motherboard as an example:
Motherboard power management chip is very important motherboard, we know that a component work to meet this condition, one is voltage, the other is power. The mainboard power management chip is responsible for the voltage of each part of the mainboard chip. Generally, when a bad motherboard is placed in front of us, we can first detect the power management chip of the motherboard to see if the chip has any output voltage.
1) First of all, after the motherboard power management chip is broken, the CPU will not work, that is, after the motherboard is powered on, the CPU will have no temperature, this time you can use the diode gear of the meter to test the inductor coil and the resistance of the ground if the meter drops after the resistance value rises to prove that the power management chip is good, on the contrary, there is a problem.
2) Detection of the power management chip, if the peripheral power supply is normal, but the voltage of the power management chip is not normal, you can first check the voltage of the field effect tube G pole, such as paying attention to the resistance value is not the same, basically confirm that the power management chip is problematic.
Power Management Integrated Circuits (Power Management Integrated Circuits) is a chip that is responsible for the transformation, distribution, detection and other power management duties in an electronic device system. It is mainly responsible for identifying the CPU power supply amplitude, generating the corresponding short moment wave, and promoting the power output of the back-end circuit.
The power control chip can be measured in the following ways: 1. Use a multimeter to measure the voltage output of the chip.
Adjust the voltage gear of the multimeter to the DC voltage gear, then connect the red pen to the output end of the chip, and ground the black pen. If the output voltage is normal, the chip works normally.
2. Use an oscilloscope to observe whether the output waveform of the chip is normal.
Connect the probe of the oscilloscope to the output end and the ground of the chip respectively, and observe whether the output waveform is stable and whether there is an anomaly.
3. Use the thermal imager to observe whether the temperature of the chip is normal.
Aim the thermal imager at the chip and observe whether the temperature of the chip is normal. If the temperature is too high, it indicates that there is a problem with the chip. In summary, the above three methods can effectively measure the quality of the power control chip.
1 The simplest and most intuitive method is to measure the input and output voltage values.
2 Set the multimeter function switch to AC voltage (manual 500V or 750V) to ensure that the input voltage is normal.
3 Then turn the multimeter function switch to the DC voltage (the manual switch is adjusted to a higher voltage unit according to the marked voltage), and measure the output voltage. If it is consistent with the marked voltage, it can be considered good.
Hello, the measurement method of power control chip quality will vary depending on the chip type and different fault performance. Here are some common approaches that might apply:
1. Voltage measurement: Use a multimeter to measure the voltage between the power and ground pins of the chip. If the voltage deviates from the specification range or there is no voltage output, then the chip may have a problem.
2. Current measurement: Use a multimeter to measure the current between the power and ground pins of the chip. If the current deviates from the specification range, there may be a problem with the chip.
3. Clock measurement: Some power control chips require external clock signals to work properly. Use an oscilloscope or logic analyzer to measure whether the clock signal is normal.
4. Temperature measurement: Some power control chips may fail due to overheating. Use a thermometer or infrared thermometer to measure whether the chip surface temperature is normal.
5. Fault analysis: If the power control chip has a fault, you can use oscilloscope, logic analyzer, signal generator and other test tools to analyze the cause of the fault. At the same time, you can refer to the data manual and application notes provided by the chip manufacturer to troubleshoot.