ON Semiconductor vice president of sales Lin Jianming China: the near future, sales of cellular phones and adapters will become completely separate, which will pose a mobile phone side of the experiment charge. Dell Inspiron 6000 power
Lin Jianming: If there is no perfect internal overcharge proper protection circuit, the battery will overcharge will cause an explosion of serious consequences.
Charging the cellphone interface, over-voltage is undoubtedly the most dangerous. Poor quality in the adapter, failure or user error a different device adapter can happen. In general, your phone charge management IC can control the charge up-to-date and voltage, to maintain the security charge the battery power. However, if the rated current of the input voltage is way too high while charging, over charging management circuit can face up to value, the circuit components will be adjusted because of charge-off or burned uncontrolled power and role. A worst case, at this occassion if the user even uses low-cost lithium batteries, could not complete overcharge protection circuit, the battery will overcharge will cause serious consequences of such an explosion. To this end the provisions of the phone in YD/T1591-2006 while in the side to contain over-voltage protection circuit to circumvent such from happening. Overvoltage safeguards (OVP) circuitry detects over-voltage negligence conditions, the detection circuit might be switch off, disconnect the unit and the adapter outcome. DELL Latitude E6400 Power
Power Management Products Country's Semiconductor Senior Application Professional Zhongjian Peng: charge management circuit functions normally charge by management of single processor chip (Charger IC), or integrated charge-management performs of power management chip (PMU) to quickly attain. Rechargeable lithium battery management circuitry with supporting features for the drip charge, constant current loading, constant voltage charging of your three charging process, and may have protection mechanisms to prevent overheating. Advanced charge management circuit also will need to have the input voltage over-voltage coverage function. The protection of the safety of your product itself is important. Some unqualified charge control circuit, often lack the protection of your design, the circuit itself may affect the system overheating, and up serious security issues. ACER TM00741 Power
MPS Marketing Director Yuan Wenlin Indonesia: a new generation of rechargeable IC PMU have in combination with charging function through this highly integrated hardware to quickly attain high reliability, but also should have OVP (overvoltage protection), OCP (overcurrent protection), NTC performance, both a high input voltage, small size plus simple external circuit. USB charger for battery management IC really should be consistent with low standby capability / charge current programmable switching / charging manner multiple input / are able to set the input potential charger or USB harbour, and automatically charge the battery and mobile distribution work be ongoing; and in accordance together with standard USB port of your limit.
Excellent cost-effective chip Recommended
Power Integrations抯 primary regulator device, such when LinkSwitch, can maintain a electrical insulation, and does not require optical isolators in the example of feedback to provide actual output voltage. This can reduce costs, help design a smaller charger, while maintaining hidden security clearance.
The hottest LinkSwitch-II products with complete voltage control, can often be very accurately simulated HARDWARE port. In addition, the choices include cable drop compensation, so regardless of connection above the extent of the foreclosure of current, voltage can often be kept constant. Sony VGP-BPS8 Power
LinkSwitch-II 5% voltage correctness, current accuracy of 10%, for any adapter and charger is definitely ideal. Also, it requires 20 components to build a complete AC capability, which saves the value of components itself, and saves production time, system and inventory costs. "In Chinese suppliers, labor costs have higher to around 0. 003 You. S. dollars each ingredient cost, for small patchy challenge and capacitor, in the buying price of Shangzhangfuduo Gengda. " Doug Bailey of Road.
MPS full variety of battery charging chips are produced using high pressure technology, have a minimum 20V, maximum 28V of voltage, and have been built-in over-voltage protection and fulfill the low standby power requirements. To comply with USB OTG low standby strength requirements, a new generation of MP-2605X series also will reduce the standby ongoing to 40uA, and add to the reverse input voltage protection (-16V) function, following the industry MPS charge chips widespread:
MP2605 standard charge is applicable to all chip general hand-held easily transportable devices; MP26056 support USB / adapter couple of input interface for USB interfaces need to charge the portable system; MP2607 built pwr path, can be automatically assigned to charge the battery and the phone work current needed for high-end hand-held portable devices just like smart phones, GPS map-reading, PDA applications.
"Based on comments from customers, they are using MPS for charge chips, the superb majority Yin Wei value considerations Ercai Yong PMU / single chip charge management, but only to get defects line charge account all Ke Fan Xiu back the sheer numbers of more than 20%, but cause all around cost increase; but hopes to be using external components to enhance the safety factor PMU, the excess cost and board area, also makes the industry difficult to sustain. After all this if the use in MPS battery charging chip, cost and product quality is often strikes a balance. "Yuanwen Lin reported.
TI抯 bq24070 series and bq24032A series gives a separate charge path and system power path, effectively stop the repeated charge and give off system problems, battery life is greatly extended; resolve the mobile a full charge that battery consumption issues begun to extend the standby moment 10 ~ 20%; effectively prevent the system uncontrolled due to CPU crash and the risk of charge, to prevent the end result of external pressure and breakdown voltage covering the issue, greatly increasing the reliability of your system; eliminates the supplemental over-voltage protection, and path switching MOSFET and Schottky diode, lessening total system cost. The adapter current consumption while in the system and charge redistribution between the automatic on-demand, using a small adapter, but greatly accelerated any charge time and keep costs down while improving the consumer experience. Acer Aspire 5000 battery
"TI advocates the way of dynamic power management in battery power management applications has been identified by customers, such as dual-port (USB, AIR CONDITIONER adapter input, respectively) linear ask for management chip bq24032A set, single-port bq24070 Series (USB, AC adapter to share with you an input), "Zhang appeared to be said.
ON Semiconductor has introduced some overvoltage protection chip. AIR CONDITIONER adapter for wall loading plug the NCP347/348, can supply up to 2A of charge mobile current and voltage transients about 28V fault protection; NCP360 plus NCP361 USB interface, appropriate for positive over-voltage protection controller, with nominal 35礎 current consumption to meet USB standby requirements, NCP361 has the benefit of a current limit work; to meet the mobile charger / power supply to accessories for example demand for bi-directional today's control, ON Semiconductor also forthcoming NCP370, provide? 28V overvoltage safeguards and adjustable current limit.
SGM4054 as St Microelectronics state management in charge introduced the first product has passed the test in a range of applications and high-volume apps, the main features include: programmable charge current about 800mA, high-capacity battery is capable of doing the fast charge; heating calibration can prevent consistent current, constant voltage operation mode, the battery overheating and improve safety of consumer products; by USB directly to a single battery charge, in order to reach the multi-product compatibility; by using charging indicator, providing you identification information; 1% ask for precision, to ensure power life; low shutdown current of 25礎, promote the effective by using power; own 2. 93V drip charge threshold, rechargeable lithium battery is often fully consistent with that standards process (trickle charge, constant current charging, consistent voltage charged off recognition); by using automatic recharge feature, to give sufficient energy. Follow-up is going to launch high-pressure, high charging current of charge direction chip, to meet the fresh demand for mobile cellular application for more electric power. ACER AS07B72 Battery
Country's Semiconductor for different applications-rich ask for management solution. A solo chip charge management computer chip (LM3658), support for UNIVERSAL SERIAL BUS, AC-DC regulator of two inputs, and have overheating safeguards. There are many tremendously integrated power management snack (PMU) has well-integrated charge-management functions. Such as GPS, PMP layouts PMU LP3913, the integrated support for USB, AC-DC regulator of not one but two input and support of your charge current path relief snap. There are many applications devised for mobile phones PMU mainly because LP3919, more up so that you can 28V overvoltage protection.
