ON Semiconductor vice chief executive of sales Lin Jianming Cina: the near future, sales of mobiles and adapters will possibly be completely separate, which will pose a cellphone side of the check charge. Dell Inspiron 6000 battery pack
Lin Jianming: If there isn't a perfect internal overcharge security circuit, the battery will overcharge could potentially cause an explosion of substantial consequences.
Charging the cellphone interface, over-voltage is undoubtedly essentially the most dangerous. Poor quality inside adapter, failure or user error then a different device adapter sometimes happens. In general, your mobile phone charge management IC can easily control the charge present-day and voltage, to keep up with the security charge the power supply. However, if the rated current in the input voltage is exorbitant while charging, over asking for management circuit can tolerate value, the circuit components are going to be adjusted because of charge-off or burned spinning out of control power and role. Your worst case, at this point if the user additionally uses low-cost lithium electric batteries, could not complete overcharge defense circuit, the battery will overcharge could potentially cause serious consequences of this explosion. To this end the provisions in the phone in YD/T1591-2006 with the side to contain over-voltage protection circuit to circumvent such from happening. Overvoltage security (OVP) circuitry detects over-voltage carelessness conditions, the detection circuit are going to be switch off, disconnect the device and the adapter productivity. DELL Latitude E6400 Battery pack
Power Management Products Country's Semiconductor Senior Application Manufacture Zhongjian Peng: charge management circuit functions normally charge with the management of single nick (Charger IC), or integrated charge-management performs of power management chip (PMU) to realize. Rechargeable lithium battery management circuitry to compliment features for the drip charge, constant current billing, constant voltage charging in the three charging process, and really should have protection mechanisms in order to avoid overheating. Advanced charge management circuit also really should have the input voltage over-voltage safeguards function. The protection of the safety belonging to the product itself is vital. Some unqualified charge organization circuit, often lack the protection in the design, the circuit itself may damage the system overheating, or higher serious security issues. ACER TM00741 Battery pack
MPS Marketing Director Yuan Wenlin China: a new generation in rechargeable IC PMU have besides charging function through the actual highly integrated hardware to quickly attain high reliability, but also really should have OVP (overvoltage protection), OCP (overcurrent protection), NTC purpose, both a high feedback voltage, small size and even simple external circuit. USB charger for battery management IC must be consistent with low standby energy / charge current programmable switching / charging way multiple input / can certainly set the input electric power charger or USB convey, and automatically charge the battery and cellphone distribution work be present; and in accordance having standard USB port belonging to the limit.
Excellent cost-effective chips Recommended
Power Integrations抯 principal regulator device, such simply because LinkSwitch, can maintain a electrical insulation, and does not require optical isolators in the matter of feedback to provide exact output voltage. This can keep costs down, help design a more compact charger, while maintaining the mandatory security clearance.
The most recently released LinkSwitch-II products with exact voltage control, can often be very accurately simulated HARDWARE port. In addition, the items include cable drop settlement, so regardless of wire above the extent of loosing current, voltage can end up kept constant. Sony VGP-BPS8 Battery pack
LinkSwitch-II 5% voltage exactness, current accuracy of 10%, to the adapter and charger is without a doubt ideal. Also, it requires 20 components to develop a complete AC energy, which saves the charge of components itself, and also saves production time, construction and inventory costs. "In Tiongkok, labor costs have higher to around 0. 003 Ough. S. dollars each piece cost, for small patchy prevention and capacitor, in the price tag on Shangzhangfuduo Gengda. " Doug Bailey involving Road.
MPS full selection of battery charging chips are produced using ruthless technology, have a bare minimum 20V, maximum 28V involving voltage, and have been bundled over-voltage protection and match the low standby power needs. To comply with USB OTG low standby electric power requirements, a new generation of MP-2605X series will also reduce the standby present to 40uA, and improve the reverse input voltage defense (-16V) function, following the MPS charge chips traditional:
MP2605 standard charge refers to all chip general hand-held convenient devices; MP26056 support USB / adapter set of input interface for USB interfaces should charge the portable gadget; MP2607 built pwr avenue, can be automatically given to charge the battery as well as phone work current essential for high-end hand-held portable devices such as smart phones, GPS selection, PDA applications.
"Based on comments from customers, they are using MPS associated with charge chips, the great majority Yin Wei price considerations Ercai Yong PMU or single chip charge managing, but only to receive defects line charge bank account all Ke Fan Xiu back numerous more than 20%, but cause complete cost increase; but needs to be using external components for boosting the safety factor PMU, the excess cost and board space, also makes the community difficult to sustain. Right now if the use associated with MPS battery charging chips, cost and product quality are usually strikes a balance. "Yuanwen Lin says.
TI抯 bq24070 series and bq24032A series comes with a separate charge path along with system power path, effectively stop the repeated charge and release system problems, battery everyday living is greatly extended; resolve the cellular a full charge the actual battery consumption issues begun to extend the standby effort 10 ~ 20%; effectively prevent the system uncontrollably due to CPU crash and also risk of charge, to prevent as a result of external pressure and breakdown voltage across the issue, greatly increasing the reliability within the system; eliminates the additional over-voltage protection, and avenue switching MOSFET and Schottky diode, eliminating total system cost. The adapter current consumption during the system and charge redistribution regarding the automatic on-demand, using a smallish adapter, but greatly accelerated the actual charge time and keep costs down while improving the owner experience. Acer Aspire 5000 power
"TI advocates the pathway of dynamic power management in juice management applications has been recognized by customers, such as dual-port (USB, AIR CONDITIONERS adapter input, respectively) linear bill management chip bq24032A series, single-port bq24070 Series (USB, AC adapter to share with you an input), "Zhang was initially said.
ON Semiconductor has introduced a few overvoltage protection chip. AIR CONDITIONERS adapter for wall charging plug the NCP347/348, can perform up to 2A of charge smartphone current and voltage transients up to 28V fault protection; NCP360 together with NCP361 USB interface, created for positive over-voltage protection controller, with surprisingly low 35礎 current consumption in order to reach USB standby requirements, NCP361 has also a current limit perform; to meet the cell phone charger / power supply to accessories including demand for bi-directional active control, ON Semiconductor as well forthcoming NCP370, provide? 28V overvoltage proper protection and adjustable current confine.
SGM4054 as St Microelectronics state management responsible introduced the first product has now passed the test in various applications and high-volume functions, the main features comprise: programmable charge current as many as 800mA, high-capacity battery is capable of doing the fast charge; heat up calibration can prevent constant current, constant voltage business mode, the battery overheating and improve safety of consumer solutions; by USB directly to the single battery charge, based on the multi-product compatibility; utilizing charging indicator, providing a computer owner identification information; 1% bill precision, to ensure battery life; low shutdown present-day of 25礎, promote the effective make use of power; own 2. 93V drip charge threshold, rechargeable lithium battery are usually fully consistent with the actual standards process (trickle impose, constant current charging, persistent voltage charged off recognition); utilizing automatic recharge feature, to present sufficient energy. Follow-up could launch high-pressure, high loading current of charge administration chip, to meet the popular demand for mobile cellphone application for more capability. ACER AS07B72 Battery
Nationalized Semiconductor for different applications-rich charge management solution. A simple chip charge management food (LM3658), support for UNIVERSAL SERIAL BUS, AC-DC regulator of not one but two inputs, and have overheating protection. There are many extremely integrated power management processor (PMU) has well-integrated charge-management operates. Such as GPS, PMP variations PMU LP3913, the involved support for USB, AC-DC regulator of several input and support within the charge current path control snap. There are many applications manufactured for mobile phones PMU while LP3919, more up to 28V overvoltage protection.
