Solar Charger: cost reduction, access to the consumer market

Solar Charger: cost reduction, access to the consumer market




Solar chargers have been coming out the consumer market. Recalling the 2009 emergence of some products, including Novothink's price 70 U.S. dollars, access to Apple authorized iPodtouch and iPhone solar charger "Surge", built-in battery capacity is 1500mAh, the charging two hours later, you can under the 3G network provides 30 minutes of talk time, in the 2G networks provide 60 minutes of talk time. There are many other similar products, such as iCharge is a compact and portable multi-function solar charger, can be three kinds of ways of power-storage; Energizer battery charger solar panels and swivels to provide a USB charging interfaces, including the two AA rechargeable batteries, including charger sold at 50 dollars or less; a number of China-made to the phone via USB port, PSP game consoles, portable solar charger charge concentrated in the 200 yuan to 500 per month.



Solar charger with a low cost access to the consumer market, semiconductor companies have made great contributions for the solar charging IC in efficiency, reliability, stability, innovation and other aspects. Linear Technology Corporation (LTC) for the solar power monolithic buck battery charger ICLT3652 regarding the use of an innovative input voltage regulation loop, the loop responsible for controlling the charge current to the input voltage to maintain In a programming level on. When the LT3652 is connected to a solar panel, enter the adjustment loop panels will remain at peak output power. LT3652 acceptable to a wide 4.95V to 32V with a 40V input range and absolute maximum ratings in order to increase the system margin. Input voltage regulation loop also allows the introduction of regulated power supply in case of bad (At this point, in the over-current conditions, the importation of a potential breakdown) to achieve optimal charge.



The basic type of charge controller is designed to protect the batteries from overcharging or under-charge effects and to prevent reverse current. Pulse-width modulation (PWM) controller will control the electricity to charge the battery, and can achieve the trickle charge in order to protect and prolong battery life. Support the maximum peak power tracking (MPPT) controller can function in solar cells to changing V / I characteristic curve to provide compensation to optimize the solar cell power output, improve energy efficiency, and to optimize the battery charger to power. ON Semiconductor for solar panel battery charging solution for control applications, the core uses CS51221 enhanced voltage-mode PWM controllers support the maximum peak power tracking, input voltage 12 to 24V, output current of 12V @ 2A, and to provide an adjustable pulse-by - current limiting, input undervoltage lockout and output overvoltage lockout and other protection. The controller provides auxiliary inputs for remote transmission and monitoring; able to adapt to power up to 90W of solar panel applications.



Inverter: Technical / market are mature



In the solar system, the inverter into alternating current to direct current, when the lighting load when the DC without the use of (such as LED lighting), while the lighting load for the exchange of load must be used. Taking into account the low conversion efficiency of solar photovoltaic, solar panels through the power obtained by "hard-won", which also highlights the inverter conversion efficiency important. In the inverter area, mature technology enables a number of vendors power inverter conversion efficiency as high as 90% above, including TI, Fairchild, ON Semiconductor, Infineon, and many local power companies and so on.



In addition, the majority of independent solar power equipment in remote and poor working environment, which requires inverter can be used in harsh environments and less maintenance of long-term stability under the conditions of work, a lot of inverter also added a short circuit protection, less voltage protection, over-current protection, reverse protection and lightning protection.



Solar energy systems need to use more broad application of the power inverter, which for many involved in the power IC and component vendors tremendous opportunities. iSuppli expects the global 2012 inverter for solar energy systems in 2008, when shipments will increase to 723,329 to 9.5 million month.



To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn.