Power enough--know the CPU power module on the motherboard

CPU What's the power supply module for?

The CPU-powered module is literally a combination of electronic components that are designed to power the CPU. Because the CPU is working as the engine, the oil (electricity) to provide stability, high quality is the CPU Power module dry things. Conversely, if the CPU power module has shrunk, then the CPU power is not up to the requirements, CPU stability, performance has a natural impact.

CPU-powered modules are typically located near the CPU slots

the guys that make up the power supply module

Find the power supply module, next we will learn how to count the Power phase number, learn it after we can completely ignore the salesman's boast, directly take the motherboard to see the real thing can judge the CPU power supply module design rationality, workmanship, power supply stability.

In general, a complete single-phase power supply consists of 1 inductors, 2 MOSFETs (FET), several capacitors (standard two, high-end motherboards may use 3), MOSFET driver ICS, and PWM controller chips (one PWM controller chip can control 2-phase or more). We find it difficult to remember, Kiki shrink a bit, beginners can roughly think of a CPU power supply generally by "two or three capacitors, two or three Fet, an inductor coil" composition, so to understand the CPU power supply circuit We need to know the capacitance, inductance, field effect tube.

Inductance in a large number of motherboards, video cards, it is the current comb, so that the effect of current stability. At present, there are all closed, semi-closed, open, generally closed inductance is the best effect. However, as long as you do not overclock, we do not care too much about the form of inductance.

Capacitance is an important way for motherboard manufacturers to control costs. For example, Sanyo, Panasonic, Ruby and other Japanese capacitors good reputation. The most common of the CPU power modules is the solid state and electrolytic capacitors (the player jokingly: rubber chimney), solid capacitors generally more resistant to high temperature and high pressure than electrolytic capacitors. Electrolyte capacitance in order to let the explosive slurry has internal pressure release point, generally in the head to get a "K" or "+" word, which is a simple way to distinguish between solid and electrolytic capacitance. The FET is a switching function, which is to adjust the current from the power supply to the specifications of the CPU, the most common is the image shown in the figure, of course, there are also integrated with other chips (such as power supply control chip) of the FET, we call the digital field effect tube.

From left to right, it is fully enclosed, semi-enclosed, open inductor

Common solid capacitors (left) and electrolyte capacitance (right)

The most common field-effect tube (left) and digital field-effect tube (right) look the difference is that there are three feet "stretched" out

recognize the phase number of a routine

Know the capacitance, inductance, field effect tube long what, it is good to recognize the CPU power module. , circled up from top to bottom is two Fet, an inductor, three capacitors, they make up a loop, and then we can see that it has two similar "groups" on the left side, so that we can count the three-phase power supply. To be reminded, a phase capacitance is sometimes used three sometimes with two, but the number of inductors and FET is relatively fixed, respectively, one and two, so the beginner to identify the phase number, can be biased in accordance with the number of FET and inductance as the basis.

Real Combat! Mainstream motherboards with several phases

Finally, is our actual combat stage, using our knowledge and Qi Qi together to identify the motherboard power phase bar.

, we see Qi QI the motherboard power supply module into three areas, the lower left area has 8 FET, 8 solid capacitors, 3 fully enclosed inductors. According to our previous study of "two or three capacitors, two or three Fet, an inductor coil" to form the standard, especially the inductor coil can prove that there are three-phase circuit, and the remaining two groups of a phase of the circuit, add up on the motherboard is 5-phase power supply, is it not feel very simple?

However, as a reminder of the increased performance, the electronic components on the motherboard calorific value is also increasing, so we often see the heatsink installed on the field effect tube, so that we can not see the number of FET. However, we can still estimate the number of circuit phases from fully enclosed inductors and capacitors with high accuracy.

tip: earlier CPU only integrated memory controller, power supply circuit from N phase power supply Development N+1 power supply mode, "+1" is for the memory controller or North Bridge chip. Subsequently, the display core is added to the CPU, the power supply circuit is upgraded to n+1+1 phase, the additional "1" is the display core. The advantage of this design is that each power supply environment is stable. And we usually say that several power supply is the sum of n+1+1.

Power enough--know the CPU power module on the motherboard