Increasingly diverse input power

Increasingly diverse input power
With the increasing diversity of people's living environment can be used for battery charging power supplies are becoming increasingly diverse, in addition to other traditional 220VAC adapter, users can also hopes to keep power through the USB interface or a vehicle for various devices such as battery charging, In addition, there are user requirements in the device while charging can continue to use its features, so the device need to be more flexible charge management circuitry to accommodate a wider range of application environments.

Clearly, the new requirements to the system manufacturers greater challenge. "The challenge comes from the first charge-management IC require a wider operating voltage range, thus requiring the use of higher voltage semiconductor process to carry out the chip design." Wang Yun said, "The second challenge is to ask the IC can be on different input power to make corresponding adjustments, as well as battery charging and system power consumption can make a certain amount of management.Dell HP297 battery "Fujitsu MB39A132/134 his charge management IC for example, explains, through the distribution of the dynamic input current to ensure that the system power consumption and battery charging can simultaneously hold.

As the AC adapter / USB / Car power supply provided by the voltage and current are not the same, while the rechargeable battery voltage and sessions are not quite the same, when the charging voltage is higher than the supply voltage can be carried out through step-up charge, so that rise and fall Pressure charge management IC on the market have not seen. In addition, the equipment working at the same time charge, demand charge management IC have a good anti-jamming design, keeping in mind that in the case of low battery voltage, charge current is greater than the discharge current to ensure that, to avoid "make ends meet," to happen. "From the charging IC design point of view, the current challenges include: 1, how to further improve the conversion efficiency and lower standby charging power; 2, how to effectively manage multi-channel power supply and load; 3, how to improve the charging rate at the same time to ensure the safety of battery life; 4, how to further expand charging control method of flexible configuration in order to adapt to different types of battery charging requirements. "Xin Wu added.

He believes that portable devices such as cell phone chargers charger is a relatively mature and stable market, domestic producers are mostly relevant to dell GW240 battery manufacturing-based, technology development, the power is relatively weak. And the charger itself is commodity nowadays, and manufacturers relatively great pressure on cost control, acceptance of new technologies is also relatively low. In recent years, because the public awareness of environmental protection, government and various environmental organizations, agencies, including the cell phone makers themselves, have raised a number of environmental standards related to energy-saving charger, for example, the letter issued by the Ministry of the Chinese workers, "mobile phones and recharge converters and interface technology requirements and test methods "(YD/T1591-2006), Energy Star EPS2.0, mobile phone charger grading standards, etc., are all aimed at reducing the waste of resources, improve energy efficiency and reduce empty weight. The introduction of these standards to a large extent driven charger products, technological innovations.

"Chinese manufacturers face major difficulties is the designer's dell RN873 battery technical practice, the charge was not able to fully grasp the design requirements of charge." Wang Yun said, "At the same Gejia charge management IC features different users of the new lack of understanding of product design was not approachable. The solution mainly depend on charge-management IC manufacturers to increase the market of products and technologies, to provide multi-faceted designer technical support to enable designers to quickly grasp the design of Charge Management technology. "

In a notebook designs, engineers on the charge management IC designs attach great importance, otherwise the event of problems will cost a lot of time and energy engineers, so early detection of problems in research and development is critical. Wang Yun said, Fujitsu addition to the evaluation board for the client systems evaluations, has also developed a laptop power supply design evaluation system, through the system, as long as the customer to provide a complete circuit can be of any problems that may occur prior to a complete inspection, thereby helping to reduce development risk.

Last year, the global financial tsunami occurred in the second half of consumer electronics products for a huge blow, "but we are delighted to find that consumer electronics has been ahead of the overall economy started to recover. In particular, benefited from state subsidies for household appliances to the countryside policies, notebook dell XR693 battery computers and LCD TVs the rapid warming and other markets. "Wang Yun said. "Next year we will continue to increase in the power management IC R & D investment, will be offered for the whole new generation of charge management products. In recent years the continuous development of new energy technologies, high-profile battery technology, lithium batteries / lithium iron batteries will also be will be applied to more product offerings. from the power management IC point of view, more secure, high-precision, multi-protection function, the external communication functions, cell balancing function and multiple sets of charging and discharging the battery voltage input and so on will be a wide battery management technology development trend of the future. "

Integrated programmable logic devices using high-power management

Energy-saving design of the most serious challenge is to use the microprocessor to manage the power supply. Microprocessors are not optimized for power management, they must deal with too many instructions, and the reaction time is slow, and may lead to thermal breakdown, as well as sudden and even catastrophic circuit boards and system failures. Although the use of microprocessor power management has been the traditional approach, but using logic, power management dell 0XR693 battery devices faster and more reliable.

Lattice Semiconductor in April 2009 launched PowerManagerII series of new products, POWR1220AT8 for power monitoring, repair and voltage measurements provide an excellent solution for programmable devices that can replace the reset generator, control IC, watchdog timer device, sequencing / tracking and hot-plug integrated circuits and many other IC, to provide users with the necessary tools and functionality to meet the large-scale base stations, high-end servers and small single-board computer systems such as the green standard of energy-saving requirements. Depending on the design, energy-saving effect of different, but the energy-saving 30% are not uncommon.

To reduce power consumption and energy conservation is an important way to turn off the circuit board for the unused portion, and the load is low, reducing the power consumed by IC. PowerManagerII highly integrated programmable voltage monitor IC devices to integrate into a device which can help reduce system cost and improve reliability. For example, dell 312-0625 battery PowerManagerII1220AT8 monitoring of up to 12 circuit board power supplies, providing up to 20 open-drain (open-drain) outputs and 8 digital outputs DC-DCtrim/margin. The use of on-chip 48 macrocell CPLD and four programmable timer, the device generates a CPU reset signal, including pulse tailing and power failures interrupted. 20 There are four outputs can be configured for high-voltage MOSFET drivers. There are six general-purpose digital inputs can be used for other control functions.

An advantage of this design is that they can use in any power-sensitive as the standard platform power management solutions. Across platforms and product lines to establish such a standard solution obtained by the efficiency of obvious, from the design time and the required quantity of devices can be realized. For low power consumption and demand for energy-saving devices in the past few years greatly increased, and this trend will continue, it is expected that an integrated, programmable power management devices will be more widely used.

Lattice plans to the next generation of power management devices to improve integration and includes more features, not only can support power management, but also enables the management of the circuit board itself. Its function will be expanded to include temperature monitoring, fan control, NV error log, the user logic and system interfaces. In addition to power management products, the company also offers a range of low-power programmable logic devices, including ispMACH4000KZE ultra-low-power CPLD and LatticeECP3FPGA series, Dell Latitude X200 battery which is only about the cost and power consumption of other FPGA with SERDES features half.