What is the difference between a fast charging chip and a regular charger chip?
Time:2023-11-13
Views:493
Today, I will briefly analyze one difference between fast charging chips and ordinary charger chips. After fast charging technology gradually became the standard charging device, there have been more and more fast charging charger chips on the market, gradually becoming the mainstream of charging. We know that the charging speed of a fast charging charger chip is much faster than that of a regular charger chip, but in fact, in addition to the different speeds, there are many differences in performance between the two. Next, let me briefly explain for you.
● The ordinary 5V2A charger chip U6315 generally uses a constant current and voltage charging method, and automatically switches to a trickle charging state after the battery is fully charged. Its advantages are simple circuit design, easy implementation, and low price.
The functional characteristics of the ordinary charger chip :
1. It has fewer peripheral components and is relatively simple, with a 700V high avalanche capable power BJT integrated internally.
2. Adopting multi-mode and QR control, combining amplitude modulation control and frequency modulation control, to improve the efficiency and reliability of the system.
In the constant current output mode, the chip adopts frequency modulation control and integrates constant current compensation for line voltage and load voltage.
4. The U6315 can work without any abnormal sound while ensuring excellent dynamic performance.
5. It integrates complete protection functions such as high-voltage power switch, cycle by cycle peak current limit, VDD overvoltage protection, VDD undervoltage protection, VDD voltage clamp, etc. internally to improve system stability.
● There are currently two main types of fast charging chargers, one is high-voltage low current, and the other is low-voltage high current. The fast charger chip U6201 can control the charging process, monitor the battery level in real-time, and automatically stop charging once it is fully charged, making the entire charging process more efficient.
The functional characteristics of the fast charger chip :
1. A highly integrated current mode PWM control chip with high performance, low standby power consumption, and low cost.
2. Built in green frequency reduction working mode, the working frequency is adjusted according to the load situation, reducing switch losses, thereby achieving lower standby power consumption and higher conversion efficiency.
3. At the same time, the peak power module is integrated, which can effectively reduce the magnetic flux and core volume of the transformer through the frequency up circuit.
4. Auxiliary side feedback/external drive MOSFET, starting current, packaging using SOT23-6.
5. At the same time, the chip provides rich protection, including cycle by cycle overcurrent protection, overvoltage protection, overvoltage clamping, undervoltage latch, over temperature protection, overload protection, and also has soft start and intermittent working mode functions. Once a fault occurs, the chip enters an automatic restart state until the fault is resolved.
In today‘s society that increasingly pursues efficiency and speed, fast charging chargers undoubtedly meet people‘s needs. Although fast charging can cause certain harm to batteries, whether you choose a regular charger chip or a fast charging power chip, Hongxi Semiconductor Technology is a good choice for you.
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