1, GND indicates ground; SW is the Switch pin; FB is the FeedBack pin; OSC is the Oscillator pin.
2, Answer one: Recommend a website, where you can find almost all the chip informationFigured.
3. Power management. CS of tp8533: Currentsense (current detection, current sampling, current feedback); COMP: compensate FB: Voltagefeedback; Power management chip pin definition: VCC power management chip power supply VDD gate driver power supply voltage input.
Pin function: inverting input for 1 INV error amplifier. 2 Output pin of COMP error amplifier. A feedback compensation network is connected between this pin and the INV pin. 3 MULT multiplier input pin. The full range of AC voltage is distributed 2V to the MULT pin. 4 CS PWM comparator input pin. The MOSFET tube current passes through a resistor and is converted into a voltage that is supplied to the CS pin.
Input power (VIN) : Pin 8 will usually have a pin for receiving input power, which is usually markedIt is the VIN. It receives the power supply voltage, which is used to supply the circuit inside the chip. Ground (GND) : There is usually one or more pins for grounding, that is, connecting to a common reference point of the circuit, labeled GND. It provides a reference point for the current loop.
The mainboard power chip pin is a chip responsible for the transformation, distribution, detection and other power management responsibilities of the electrical energy in the electronic equipment system. It is mainly responsible for identifying the CPU power supply amplitude, generating the corresponding short-distance wave, and promoting the power output of the back-end circuit. Commonly used power management chip HIP630IS653RT923ADP316KA7500, TL494, etc.
sc1s311 pin function and voltage: handshake. Responsible for the input of the pins 8,12,49,50,51 and other pins, functions such as EHT input, IF input, R, G, B signal input. There are three main types of pins with a voltage of 0, one is "grounded", one is "empty", and one is a silent foot, and the high voltage is 3V, such as "AV switch control pin", "SDA pin" and so on.
If "-" appears on the left side of the value, it indicates that the pen polarity is opposite to the actual power supply polarityThe red watch pen is connected to the negative electrode. First of all, we need to prepare a multimeter, and then set the multimeter to zero, so that the error can be minimized, and then set the multimeter to DC voltage to indicate that the measurement is DC voltage. Some voltmeters may want to choose a range, the voltage of the graphics card is generally around 1V, so choose a smaller range.
This model is a power management chip, and the internal frame diagram is as follows: As can be seen from the figure, the 4 pins are over-power protection.
Pin 1: gnd ground 2: icomp current amplification output 3: is overcurrent detection signal input 4: vins low voltage detection signal input 5: vcomp error Amplification output 6: vfb output constant voltage control signal 7: vcc control circuit power input 8: gate gate driver output voltage is not listed, which is more complicated. See it on your own website.
Chip function: Power factor correction IC package/box: SO-8 Maximum operating temperature: 150 C minimum working