Dynamically adjust the appropriate output voltage

The power supply is usually set to a fixed output voltage to power the electrical load. However, some applications require variable supply voltages. For example...

The four main points required for motor drives

According to statistics, in recent years, the annual production of motor motors in the world is about 10 billion units, and its power consumption accounts for a...

Power Management Design Guidelines: Architecture, IC selection criteria

Power management through a certain circuit topology, the different power input into the system to meet the needs of the output voltage. The Power supply directl...

About I2C IO expansion chip finishing

I2C IO expansion, there are mainly 16 and 8 roads, the mainstream is 16 roads, and each is basically compatible. Package TSSOP24, QFN24, SOP24, SSOP24 are avail...

The working principle of LED drive circuit

The working principle of the LED (light-emitting Diode) driver circuit is to control the current and voltage to make the LED work normally and emit Light. LED i...

Working area and working principle of voltage comparator

Voltage comparators are usually composed of integrated op-amps. Different from common op-amp circuits, integrated op-amps in comparators are mostly in open-loop...

Design of DC-DC chip FB divider resistor circuit

In the use of DCDC chip circuit design will encounter the problem of calculating the partial voltage resistance, the following is a brief introduction to how to...

Some countermeasures to suppress electromagnetic interference of power module

What is the offset voltage of the op amp?

What is the offset voltage of the op amp?Answer: When the two inputs of the op amp are zero, the output has a certain value, that is, the offset voltage Vos. Th...

Power management chip how to measure the internal structure of the power chip

Power management chip (PMIC) is an integrated circuit that includes a variety of power rails and power management functions in a single chip. The main function ...

Summary of common level switching circuits

In the circuit designed by us, the pins of different chips use different voltages, such as common 1.8V, 3.3V, 5V, etc. We need to communicate devices with diffe...

Can I take any value of DC-DC partial voltage feedback resistor?

I believe that every hardware engineer should have used DC-DC, so have you ever thought about the value of the partial voltage feedback resistance?

Use of integrated operational amps

At present, the common packaging methods of integrated OP amPs include metal shell package and dual in-line package, as shown in Figure 3.7.1, with the latter b...

How to realize self-locking function of stepper motor

The stepper motor itself does not have a self-locking function, but it can achieve self-locking function through external devices or control methods

Isolated and non-isolated power supply characteristics PK

If the CPU is likened to the brain of the electronic system, then the power supply is equivalent to the heart of the electronic system. With the increasing dem...

Classification and application analysis of oscilloscopes

An oscilloscope is an instrument used to display waveforms, displaying the variation of signal voltage over time. Therefore, oscilloscopes can be used to measu...

Conversion of 12 bit ADC analog signal to digital signal

A 12 bit ADC is a progressive approximation type analog-to-digital converter. Its resolution can reach 12 bits. This means that it can convert analog signals in...

Four Medium Voltage Applications that Will be Innovated by Gallium Nitride in El...

With the rapid development of technology, people‘s demand for power is also constantly increasing. In order to sustainably promote this development, renewable ...

How to detect Type－C connection and direction

The specification describes how the Type-C upstream port (UFP) applies pull-down resistors (R d) on the configuration channel pins CC1 and CC2 to indicate that ...

Causes of high frequency noise in boost DC-DC converter

In boost DC-DC converter, when the low-side switch is turned on, the inductance current will increase and energy will be accumulated; When the low-side switch ...