Power and Power Management Solutions Alliance

At present, power supply and power management solutions are still the hottest topics. Fairchild, Altera, Intersil, Cadence, Linear Technology and other companies present the most advanced and complete power supply and power management solutions. Let's share them together.

External adapter

According to Darnell's analysis, AC/DC external power supplies reached 2.2 billion in 2009 and will reach 3.3 billion in 2013, with an annual compound growth rate of 11.1%. From the application point of view, the largest growth part is communication, mainly driven by mobile phones, and it is expected to reach 2.3 billion in 2013, among which products less than 75W are mainly driven by the communication market.

Fairchild's innovative products include PWM controllers below 75W. Generally, the disadvantages of 8-pin fixed frequency green PWM controllers are low energy efficiency and high standby energy consumption. Fairchild's FAN6754 can reach an average energy efficiency of 87% when loaded; less than 100mW when unloaded, reducing EMI by 5~10dB.

Mobile phone power solutions

There are currently six levels of mobile phone power solutions to improve energy efficiency from top to bottom: application software and hardware, OS, system partitioning, hardware architecture, circuit design and manufacturing engineering. The last four are Fairchild's expertise.

Fairchild's lighting MPS (mobile power solution) can be used for digital camera flash and mobile phone LED drivers. For example, FAN5902 is used in the RF part of the mobile phone, which can reduce energy consumption by 50%. Fairchild also has a variety of solutions for mobile phone Micro USB with high integration; in terms of video of mobile products, the patented mSerDes is smaller and does not require a shielding shell; Fairchild also launched the industry's first 1080p video filter for mobile phones, which is only 1.0×1.45mm in size; the video/camera switch signal is of high quality and is used for industry-standard MIPI and HDMI interconnection. Translator is an IC that inputs one voltage and outputs multiple voltages. For example, a microprocessor with an I/O port requires 1.8V, the logic layer requires 3.3V, and the voltage of flash memory and flat panel display requires a higher voltage. FXL3SD206 meets a wide range of voltage requirements; Fairchild also provides audio system IP for mobile phones and MP3 headphones, which can be used for microphone ECM or MEMS digital output IP.

Low-voltage solution

Low voltage traditionally refers to MOSFET working at 200V and below, usually multi-chip modules (MCM) and load switch products. Now the industry also includes "medium-power IC products". Fairchild's innovative MLP (low-power power management) products have a variety of miniaturized packaging solutions, making the traditional SO-8 tend to dual 3×3mm, D-Pak tend to Power56 and Power33, Power56 tend to Power33, Power33 tend to Power22 solutions, and energy efficiency, power density, and EMI are better. In the future, low-voltage MOSFET will continue to innovate in application solutions, Trench MOSFET technology, linear IC design and packaging. Van Niemela, global technical marketing manager of Fairchild
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offline power supply, introduced several innovative technologies of the company: (1) SupreMOS technology has lower RDS(ON) and lower input capacitance than SuperFET; (2) Critical conduction mode interleaved PFC controller can improve energy efficiency, with phase management, valley switching technology, etc., typical products such as FAN9612; (3) ORing FET breaks the lowest record of RDS(ON) 1mW at 5×6mm footprint, typical products such as FDMS7650.

Professionals pointed out that server farms and base stations are currently the most concerned energy consumers. In addition, home standby power consumption, lighting, portable products, etc. are also hot spots for energy saving.

Dave Greenfield, senior director of Altera Hardcopy ASIC Division, said that in order to reduce power consumption, innovation is needed at the chip, software and system levels: (1) In terms of chips, it is necessary to balance process technology. For example, lower core voltage can usually reduce dynamic power consumption. Process improvement cannot help reduce static power consumption (leakage current), but other technologies can be used to reduce power consumption; (2) Chips must adopt multiple design technologies and need to accurately estimate key starting points. The integration of power drive is more important, while in the past, performance and density were more concerned; (3) In terms of system level, for example, although DDR3 has stronger performance than DDR2, it consumes less power.

Peter Oaklander, senior vice president of Intersil Power Management Products Division, introduced a solution for achieving high-efficiency power conversion in data servers, pointing out that the new multi-phase and PoL (point of load) architecture enhances the efficiency of server DC/DC. For example, ISL6336EVAL5 can improve the efficiency of multi-phase architecture and light load efficiency due to its reasonable algorithm. Speaking of digital power supply, will digital power supply replace all analog power supply in the future? The answer is no. Due to price factors, digital power supply is more suitable for high-end applications.

Steve Carlson, vice president of Cadence, said that in terms of chip architecture innovation, people have many choices: process nodes, design costs, reuse, multi-core, packaging, mixed signals, lithography selection, programmable aspects, etc. This can be good or bad. The good way is to evaluate the chip as accurately as possible in the early stage to shorten the design time.

Power management solutions and μModule modules for hybrid vehicles

Bob Swanson, executive chairman of Linear Technology, said that the company's proud technologies include: power management solutions for hybrid vehicles, such as LTC6802, which is part of the lithium polymer power management system and has been used in Mitsubishi iMiEV, the first mass-produced electric car in Japan.

The characteristic of μModule products is ease of use. The company first launched μModule voltage regulators in 2006, and now has more than 25 series, and the growth rate is higher than that of discrete regulators.

Synchronous buck converters and stepper converters

Tony Armstrong, director of product marketing for Linear Technology's power products division, introduced the LTC3633: a dual-channel 3A, 15V input monolithic synchronous buck converter. Samples are now available and mass production is expected in January 2010. Using 0.65μm process.

LT3640 is a high voltage, dual output monolithic stepper converter with POR (power-on reset) and WDT (watchdog timer), 4~35V for non-synchronous high voltage Buck (step-down conversion), 2.25~5.5V for synchronous low voltage Buck. It can be applied to automobiles, industrial power supplies, distributed DC power supply systems, etc. There

are four main types of Linear Technology power management solutions: linear regulators, switch mode controller regulators, monolithic switch mode regulators, and μModule regulator systems. Among them, the DC/DC μModule regulator is characterized by high reliability. LTM8027 has a 60V input voltage and an adjustable output voltage of 2.5~24V. It can be used as an inverter. It is small, thin and easy to use.