The MCP19111’s block diagram. www.electronics-eetimes. Superior Solutions for Communications. SAW filters and duplexers for all systems Cellular RF modules and connectivity SiP modules Pressure sensors for mobile devices Surge arresters for all systems Multilayer RF chip components Isolators and circulators for base stations Multilayer chip inductors MLCCs for all applications Application-specific EMI/ESD filter modules Common-mode filters for signal lines Transformers and chokes for DSL and base stations SMD varistors for all systems www.global.tdk.com · www.epcos.com of 300 W and above whereas our analog portfolio is handling 50 W and below. But the new digitally enhanced power analog controller focuses on an intermediate area which is some place between 50 W and 150 W.” “Over the past two or three years we have seen an introduction of a hybrid control-type topology or mixed-signal-type topology where there is a component of analog and there is a component of digital. There are different ways of developing these kinds of solutions. We are seeing on the microcontroller side continued integration of analog-type peripherals whereas on the digital side it is a little bit more difficult to integrate technologies because of process differences. What we saw as an opportunity was a digitally enhanced power analog controller”. “We have retained the performance of the analog control without introducing the need for a high-speed, high-performance microcontroller. That typically means a very small lithography type process which is less expensive. The same thing applies with the analog-to-digital conversion element. The solution needs to be of high precision for load regulation accuracy and it also needs to be of high speed for the same bandwidth concerns that you have if you try to convert it into a digital domain. So you eliminate cost and you eliminate complexity. And when you eliminate that complexity it also enables some additional integration on the analog side”. Stella continued: “Yet it still offers digital flexibility because with the small microcontroller you can actively optimize the analog. That allows you to offer ‘configurable analog’ solutions which is something new because you don’t normally hear the words ‘configurable’ and ‘analog’ in the same sentence”. “Essentially we have the 8-bit MCU while also having the analog controller with an integrated MOSFET driver and an integrated LDO. The device offers the fully programmable MCU core which enables the custom IP integration that customers tell us they are looking for and allows them to do custom firmware development “. “This device is more than just a controller it can turn into a system architecture power management device because it can now be used to control the turn on of various voltage regulators within a system. With load complexity increasing and with advanced devices like FPGAs requiring certain timing sequences and voltage rail performance you can now have a central device that could help you sequence your power management needs”.
EETE FEBRUARY 2013
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