ULDO in the power of the Internet - the Internet this, power supply, ULDO-electronics industry

ULDO in the power of the Internet - the Internet this

, power supply, ULDO-electronics industry

Applications launch very simplified power supply IC and external components of the ultra-low dropout of 1A-7AULDO (ultra-low dropout linear regulator) AX661x series and DC / DC synchronous buck converter AX312x, in order to achieve compact and provincial product power requirements See more exciting information 4C future product advertised cheap, thin and with mobile Internet access, so the Power supply Design must move away from traditional constraints. These restrictions include the cumbersome external components and circuit complexity, higher output noise and standby power consumption, and BOM cost less approachable. End, Yaselaite technology specifically for the Internet this (netbook) introduced a very simplified application of the external components Power supply IC And low pressure of the 1A-7AULDO (ultra low dropout linear regulator) AX661x series and DC / DC synchronous buck converter AX312x, to make products to meet the requirements of light and power, and accordingly to provide on IntelATOM and VIANANO platform configuration required for a variety of low-voltage power conversion requirements of the stability of power supply options, such as IIC2009 on the Shenzhen station showed a VIA processor based on the Internet of the power program. They include a stable supply of 1.2V 1.5V turn Bluetooth or wireless power supply module required for 1A-2A switch power management programs or 1.8V/1.5V 1.1V supply integrated ChipsetPCH (Platform ControllerHub) of the 1A-7A dynamic power can be external minimize the components required, and have more than the traditional Switch Regulators at a much lower ripple noise. Yaselaite power IC product line has been available to the customers one-stop shopping online. Shown in Figure 1, Yaselaite for Internet or other simulation of the power supply unit totalsolution also provides: DC fan control unit AX993/995, USB2.0/USB3.0 protection Switch Components AX8201, DDR2/DDR3 power program AX1250/1251/1252, Hall switch AX8101 and is expected in 2009 Q4 production of highly integrated PMU-AX3201. ULDO features LDO uses a very wide range of IC, its advantages are: simple structure, low output ripple, less external components and simple so. LDO architecture in general: an error amplifier (ErrorAmplifier) drives a P-type MOSFET, using feedback to compare the reference voltage, the output remained at the correct voltage. But when the system designer needs is the ultra-low dropout, low output voltage (0.8-1.8V), high output current, with the traditional single-supply, P-MOSFET LDO architecture to design becomes very difficult. Therefore, the Yaselaite the AX661x series ULDO with N-type MOSFET to when the drive to the drive for the same size, N-MOSFET's driving characteristics are generally better than the P-type MOSFET. However, at low input voltages, N-MOSFET driving characteristics of a significant shortage, and may not be suitable for the IC's operating voltage. To this end, Yaselaite designed to provide another set of IC power input voltage stability, and greatly enhance the driving ability of N-MOSFET. Method to convert low voltage input low voltage output and can drive a large load current. Figure 1: AXElite platform-based Intel ATOM power program.

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