Make it possible for integrated circuit manufacturing to continue advancing at more advanced process nodes. The advantage of Electronic Manufacturing Services is weakening, and labor costs are rising!
Nowadays, the wide range of product forms such as LINN R3x millimeter wave signals, analog, and digital have entered the millimeter wave era. With the development of integrated circuit technology and the demand for lighter, thinner, and smaller development trends, the functions are becoming more diverse, and the design will become more complex. The area of IC products is becoming larger, the chips are becoming smaller, and the size is becoming larger. In addition, the chip area and inter chip design also vary depending on the size of the IC chip area.
The driving of high-voltage MOSFETs is mainly focused on low-voltage output and low-voltage high current driving. Due to the installation of a high-voltage drive circuit inside the power supply, there is no need for an external drive circuit to drive the chip. If it is a small motor, it will cause some trouble to the controller. Figure 2 shows the high-voltage MOSFET driver circuit. Figure 3 shows a low-voltage IC and a high-voltage MOSFET that requires a separate capacitor to drive the motor. Then connect the capacitor to the power supply of the driver chip and select a 1K Ω resistor to drive the motor. According to the circuit design, capacitors that do not require MOSFETs should be used. Although the power consumption of MOSFETs is very low, driving the internal switch MOSFET can easily drive the motor to complete load operation.

Since there is no inductance between the chip and the driver, the driver only increases the inductance, which can reduce the total current of the application. Lower power loss. At higher switching frequencies, low MOSFET switching losses allow for a rapid decrease in power supply current loss and can achieve very low thermal losses. The power efficiency has far exceeded the conversion requirements of buck power sources. The linear regulator uses a more complex topology for control. For switches, less energy is required, which means higher efficiency. And the switching speed has become very fast, which also means that the power is getting lower and the price is not high. On the contrary, the most common design is also due to its very low thermal performance, which is closest to the cost of a step-down power supply.
As will be mentioned later, designers require multiple professional knowledge. Because development requires time to learn and work with others. It may lead to failure or be difficult to understand. Therefore, you cannot fully understand these potential thermal issues.

For the design of a switching power supply, it is actually an example. It operates near 12V or 12VDC of a regulated power supply, rather than through a load switching power supply. The actual process of this is not too simple, and it also depends on DC/DC power. In some cases, it has a 2-segment output voltage and a maximum output voltage, as shown in Figure 2.
In many cases, when the load is directly supplied from negative voltage to output voltage, this not only affects the output voltage, but also leads to efficiency loss.
In order to cut off the power supply and make the entire system more "simple", UPS power is usually a system that provides charging for batteries. Figure 2 shows the UPS power supply system, which provides high efficiency (up to 1% power output) within the range of 20% ECC load and input voltage.