MAXIM’s Li-ion ModelGauge IC Solution

MAXIM has introduced ICs using ModelGauge, an advanced lithium-ion battery modeling algorithm, that continuously tracks a battery’s relative state of charge (SOC) over a wide range of charge/discharge conditions. The ModelGauge algorithm eliminates the current sense resistor and battery learning cycle required by other fuel gauges. Using the system’s microcontroller,… Continue reading

Analysis and research on the failure of audio output noise of speech module

“In actual use, the feedback microphone or speaker has different degrees of rustling, which is caused by noise in the audio output signal analyzed by the voice module circuit. After circuit analysis, system software analysis and simulation verification analysis of the voice module, it is confirmed that the voice module… Continue reading

Single-cell lithium battery power supply circuit design, including boost, charge management and other circuit design

“First of all, the author learned from the data that the voltage range of a lithium battery with a nominal name of 3.7V is generally 2.8V~4.2V. If you want to get a stable voltage of 5V, 3.8V and 3.3V, obviously you can’t get it directly. Need to use a specific… Continue reading

The monopoly of Japan and South Korea has become a trend. How can domestic FPC manufacturers stand out?

The term “FPC” may be very unfamiliar to ordinary people, but it is closely related to our lives, and it can be found in mobile phones and tablet computers. From 2014, FPC was applied to the fingerprint recognition module of iPhone 6; to 2016, it was applied to the dual… Continue reading

Play with the use of Century Star in group control of injection molding machines

   1 Background analysismy country is a big country in the production and consumption of plastic products. The control performance of injection molding machines is directly related to production efficiency and product quality. Now the traditional relay-type injection molding machines are basically replaced by injection molding machines controlled by intelligent… Continue reading

From the perspective of five development trends, how to choose power management chips in the future

[Introduction]As an indispensable part of Electronic systems, power modules are the most common and one of the parts that test the skills of hardware engineers. A power module is a subsystem that converts, distributes, controls and monitors electrical energy in an electronic system. The power consumption, performance, cost and volume… Continue reading

Huawei insiders: Reserve Kirin 9000, and will also push P50 and Mate 50

According to Huawei insiders, Huawei is currently shifting its business focus to other categories than mobile phones. Huawei’s consumer business in China is affecting businesses and channels to transform into five major industries. The five major industries refer to the PC & tablet industry, the HD industry, and the wearable… Continue reading

How to Rely on PCB Layout to Avoid the Noise Problem of Switching Power Supply

““Noise problem!” – those are the words every board designer hears. To solve the noise problem, it often takes hours of lab tests to find the culprit, but it turns out that the noise is caused by the improper layout of the switching power supply. Addressing such issues may require… Continue reading

Quickly play “turn” BLDC: Do you want to know this little trick of motor-driven development?

From remote Internet of Things (IoT)-controlled garage door openers and windows to satellite propulsion controllers, brushless DC (BLDC) motors are increasingly used in many different applications. For BLDC motors, the problem facing designers is that the control algorithms required to drive the motor are complex and often specialized. This makes… Continue reading

Huawei and Qualcomm met on the autonomous driving track! Will it be evenly matched, or who will crush whom?

Are Huawei and Qualcomm rivals or comrades-in-arms? I believe that everyone does not have an accurate answer, that is, it can be said to be a comrade-in-arms or an opponent. On the one hand, it is because Huawei’s Kirin chips are still in competition with Qualcomm’s Snapdragon chips. Huawei uses… Continue reading