TECHNICAL KNOWLEDGE

TECHNICAL KNOWLEDGE

TECHNICAL KNOWLEDGE

04/08

2024

Core Mao Micro Primary Edge Constant Power Constant Current Fast Charge Design Guide

Core Mao Micro Primary Edge Constant Power Constant Current Fast Charge Design Guide

In the early days, some mobile machines had a DC-DC buck core or linear constant current core inside, which could convert the voltage input to the terminal into 3.2~4.2V acceptable to the battery, and the charging current was controlled by the core inside the machine. The charging power is determined by the voltage and current of the charging terminal, P = V * I.

04/08

2024

Core Mao micro-synchronous rectifier chip product introduction and design points V1.1

Core Mao micro-synchronous rectifier chip product introduction and design points V1.1

Xinmao Microelectronics (www.chip-hope.com) is a professional switching power supply chip manufacturer, focusing on the design, manufacture and packaging of AC-DC power management IC. Headquartered in Luohu, Shenzhen, the chip design center is in Shanghai. The company has a wholly-owned packaging factory (Hunan Hengyang Si Mao semiconductor), with the production of SOP7 ~ 24,QFN2x2 ~ 12x 12,TO220-6 and other advanced packaging capabilities.

04/08

2024

Guide for commissioning and calculation of micro high frequency QR-LP8842-LP88Gxx

Guide for commissioning and calculation of micro high frequency QR-LP8842-LP88Gxx

As a relatively mature third-generation semiconductor material, gallium nitride (GaN) power devices can increase the working frequency of Flyback topology to above 200kHz based on its extremely fast switching speed, excellent on-resistance and extremely low switching loss, and can improve the conversion efficiency of power supply while reducing the volume of power supply. Therefore, GaN has been widely used in fast-charging products of Flyback topology.

04/08

2024

Core Mao Micro PSR Built-in BJT Chip-Design and Debug Guide 20230708

Core Mao Micro PSR Built-in BJT Chip-Design and Debug Guide 20230708

Xinmao Microelectronics has BJT power management cores built into the PSR series. These cores use Xinmao Microelectronics's unique Vcc power supply technology and built-in start-up circuit, which can provide customers with excellent performance/cost.

04/08

2024

Core Micro LP6655-CCM Mode PFC Controller Application Guide

Core Micro LP6655-CCM Mode PFC Controller Application Guide

Power factor correction (PFC) circuit can eliminate the high harmonics of AC input current, improve the power factor of the power supply, reduce the input RMS current, and provide a stable DC voltage to the back-end circuit. Therefore, power factor correction (PFC) circuit is widely used in chargers, adapters, industrial control/communication power supplies, frequency converters, motor drives, automation equipment, industrial robots and other fields.

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