Diversified power supply design for portable products

At present, with the diversification of portable products and the almost harsh requirements for audio and video parts, the power consumption requirements of the whole machine have been raised to a very high level, which directly affects the battery life. Similarly, the increase in battery capacity makes its charging an important issue. In addition, the rationality of charging and discharging of lithium batteries as compound products has become a key factor in reflecting their performance and quality. For safety reasons, lithium batteries have been forced to use professional charging ICs that meet the characteristics of the battery charging curve to meet the needs. There are many charging ICs circulating in the market, but only a few can truly meet the charging specifications of lithium batteries.

In the key design of lithium battery charging, from the perspective of end users, there are some design compromises between linear and switch-mode battery charging ICs. Linear charging ICs, like LDOs, have a small footprint and fewer peripheral components (such as no inductor), but have low power, less available power, and generate more heat. However, linear charging ICs are more suitable when cost and space requirements are more important than efficiency. Therefore, the demand for higher charging efficiency, high integration in battery charging ICs, high space utilization, and application flexibility has brought tremendous pressure to the design of battery-powered handheld products. The challenges faced by engineering designers during research and development mainly include:

1. Higher charging current and shorter charging time

2. Minimum heat generation

3. Comply with the specification when charging via USB

4. Small size

5. Small leakage current

To solve the above problems, LowpowerSemi adopts super powerpat to control constant temperature charging and advanced production technology to provide portable product designers with diversified choices. The most advanced power balancing technology allows you to design your application products with ease.

LowPowerSemi uses full analog circuits in the lithium battery charging part to ensure the perfect charging curve of the lithium battery. At the same time, it ensures that you can choose the most suitable product. You can also directly contact the local office to communicate technical issues.

Lithium battery standard charging curve