ON Semiconductor vice web design manager of sales Lin Jianming China and taiwan: the near future, sales of cellular phones and adapters will get completely separate, which will pose a smartphone side of the try charge. Dell Inspiron 6000 power
Lin Jianming: If there isn't perfect internal overcharge defense circuit, the battery will overcharge will cause an explosion of major consequences.
Charging the contact interface, over-voltage is undoubtedly just about the most dangerous. Poor quality during the adapter, failure or user error a different device adapter could happen. In general, your mobile charge management IC can certainly control the charge recent and voltage, to take care of the security charge the electric. However, if the rated current within the input voltage is too much while charging, over charging you management circuit can stand up to value, the circuit components shall be adjusted because of charge-off or burned uncontrolled power and role. A worst case, at on this occasion if the user also uses low-cost lithium energy, could not complete overcharge safeguard circuit, the battery will overcharge will cause serious consequences of this explosion. To this end the provisions within the phone in YD/T1591-2006 inside side to contain over-voltage protection circuit and hence avoiding such from happening. Overvoltage safeguards (OVP) circuitry detects over-voltage mistake conditions, the detection circuit might be switch off, disconnect the unit and the adapter end result. DELL Latitude E6400 Power
Power Management Products Indigenous Semiconductor Senior Application Industrial engineer Zhongjian Peng: charge management circuit functions normally charge by management of single food (Charger IC), or integrated charge-management works of power management chip (PMU) to quickly attain. Rechargeable lithium battery management circuitry with supporting features for the trickle charge, constant current asking for, constant voltage charging of your three charging process, and may have protection mechanisms to forestall overheating. Advanced charge management circuit also will need to have the input voltage over-voltage safeguard function. The protection of the safety in the product itself is important. Some unqualified charge operations 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 Japan: a new generation for rechargeable IC PMU have in combination with charging function through the actual highly integrated hardware to perform high reliability, but also ought to have OVP (overvoltage protection), OCP (overcurrent protection), NTC performance, both a high suggestions voltage, small size along with simple external circuit. USB charger for battery management IC really should be consistent with low standby power / charge current programmable switching / charging setting multiple input / can set the input electricity charger or USB slot, and automatically charge the battery and mobile distribution work be today's; and in accordance utilizing standard USB port in the limit.
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Power Integrations抯 prime regulator device, such while LinkSwitch, can maintain all the electrical insulation, and does not require optical isolators in the example of feedback to provide real output voltage. This can keep costs down, help design a small charger, while maintaining hidden security clearance.
The most up-to-date LinkSwitch-II products with correct voltage control, can come to be very accurately simulated UNIVERSAL SERIAL BUS port. In addition, the choices include cable drop pay out, so regardless of cable tv above the extent of the foreclosure of current, voltage can always be kept constant. Sony VGP-BPS8 Power
LinkSwitch-II 5% voltage correctness, current accuracy of 10%, for any adapter and charger can be ideal. Also, it requires 20 components to generate a complete AC power, which saves the expense of components itself, and saves production time, system and inventory costs. "In Chinese suppliers, labor costs have heightened to around 0. 003 You. S. dollars each portion cost, for small patchy weight and capacitor, in the buying price of Shangzhangfuduo Gengda. " Doug Bailey for Road.
MPS full variety of battery charging chips are produced using questionable technology, have a minimum amount 20V, maximum 28V for voltage, and have been built in over-voltage protection and satisfy the low standby power wants. To comply with HARDWARE OTG low standby ability requirements, a new generation of MP-2605X series will also reduce the standby today's to 40uA, and add to the reverse input voltage safeguard (-16V) function, following the MPS charge chips traditionally used:
MP2605 standard charge is applicable to all chip general hand-held compact devices; MP26056 support USB / adapter couple of input interface for USB interfaces will need to charge the portable apparatus; MP2607 built pwr direction, can be automatically allocated to charge the battery and also phone work current necessary for high-end hand-held portable devices that include smart phones, GPS direction-finding, PDA applications.
"Based on comments from customers, they are using MPS regarding charge chips, the awesome majority Yin Wei expense considerations Ercai Yong PMU or single chip charge control, but only to get defects line charge akun 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 display the safety factor PMU, the excess cost and board spot, also makes the marketplace difficult to sustain. After all this if the use connected with MPS battery charging processor, cost and product quality is often strikes a balance. "Yuanwen Lin reported.
TI抯 bq24070 series and bq24032A series gives a separate charge path together with system power path, effectively stop the repeated charge and launch system problems, battery daily life is greatly extended; resolve the mobile a full charge this battery consumption issues started to extend the standby point in time 10 ~ 20%; effectively prevent the system uncontrolled due to CPU crash along with the risk of charge, to prevent the end result of external pressure and breakdown voltage in the issue, greatly increasing the reliability of your system; eliminates the increased over-voltage protection, and direction switching MOSFET and Schottky diode, lessening total system cost. The adapter current consumption while in the system and charge redistribution amongst the automatic on-demand, using one small adapter, but greatly accelerated the particular charge time and keep costs down while improving the owner experience. Acer Aspire 5000 electric
"TI advocates the direction of dynamic power management in juice management applications has been identified by customers, such as dual-port (USB, AIR CONDITIONER adapter input, respectively) linear ask for management chip bq24032A selection, 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 payment plug the NCP347/348, can supply up to 2A of charge cellphone current and voltage transients as much 28V fault protection; NCP360 plus NCP361 USB interface, appropriate for positive over-voltage protection controller, with nominal 35礎 current consumption based on USB standby requirements, NCP361 has the benefit of a current limit operate; to meet the telephone charger / power supply to accessories for example demand for bi-directional present control, ON Semiconductor at the same time forthcoming NCP370, provide? 28V overvoltage safeguards and adjustable current control.
SGM4054 as St Microelectronics state management the leader introduced the first product has passed the test in a range of applications and high-volume programs, the main features include things like: programmable charge current about 800mA, high-capacity battery is capable of doing the fast charge; heating calibration can prevent endless current, constant voltage surgery mode, the battery overheating and improve safety of consumer products and services; by USB directly towards 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 wide variety life; low shutdown ongoing of 25礎, promote the effective by using power; own 2. 93V drip charge threshold, rechargeable lithium battery is often fully consistent with this standards process (trickle ask for, 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 you current of charge supervision chip, to meet the modern demand for mobile phone application for more energy. ACER AS07B72 Battery
Country's Semiconductor for different applications-rich command management solution. A one chip charge management processor chip (LM3658), support for HARDWARE, AC-DC regulator of several inputs, and have overheating cover. There are many very integrated power management chip (PMU) has well-integrated charge-management performs. Such as GPS, PMP layouts PMU LP3913, the built in support for USB, AC-DC regulator of a pair of input and support of your charge current path management snap. There are many applications suitable for mobile phones PMU like LP3919, more up to make sure you 28V overvoltage protection.
