What are the three types of IC chips for mobile power banks

Release time:2018-04-10 11:09:44

1. Lithium battery management IC for mobile power banks
At present, the domestic charging management system is relatively mature, with intelligent integrated IC control of the entire charging process, executing the three-stage charging functions of trickle current, constant current, and constant voltage for lithium batteries. Models with stable performance include CT6551, CT6201, JW3816, JW6235, etc.
\t 2、 Single chip microcontroller (MCU)
MCU is an intelligent control system applied to PCB boards, which can prevent power loss without charging output and avoid equipment damage caused by unstable current and voltage surges during charging; It can control the charging and discharging of the product, providing multiple protections such as charging protection, discharging protection, temperature protection, leakage protection, overload protection, short circuit protection, etc., making the product performance safer and more stable, prolonging the product's service life, and avoiding unstable output from causing damage to the phone, solving users' worries. Automatically recognize mobile phones and various digital products, support charging of various brands of smartphones and tablets, compatible with charging other digital electronic products with USB 5V input. Currently, common brands and models include Juquan, Juwei, Songhan, and Haier HR6P61
\t 3、 Mobile power supply chip boost IC
The voltage of the mobile power battery is 3.7V, while the output voltage is 5.0V, and the power needs to go through a boost circuit to be output. During the boosting process, some of the power is lost due to heat generated in the circuit, resulting in a certain difference between the actual output power and the battery output power. The ratio of the two is called the conversion rate of the portable power supply. At present, the efficiency of technology conversion in China varies, generally ranging from 75% to 85% Some strong manufacturers also adopt higher cost solutions and independently develop circuit designs, with actual conversion rates reaching over 90%. Of course, with the development of technology, this conversion rate will continue to increase. There are also methods of connecting two batteries in series to 8.4V and then using voltage reduction, which can achieve an efficiency of about 95%. However, they require high consistency of battery cells and have relatively low safety. Once a fault occurs, it is easy to burn out users' digital products such as mobile phones, so few manufacturers adopt it.