COVER STORY
µModule regulators from Analog Devices offer designers a complete system in package power management solution
Matthew Johnson, divisional marketing manager at Anglia outlines how the many benefits of Analog Devices µModule (micromodule) regulators and dc-to-dc power products can help
The µModules are housed in compact BGA or LGA package options, the high level of integration allows designers to simplify the circuit design, verification and manufacturing process whilst reducing the amount of PCB space that is occupied. The µModule family have a thermally enhanced package with integrated heatsink technology meaning devices can run at cooler temperatures thus allowing for increased system power density and performance, improved reliability and reduced complexity of the thermal management solution. The µModule power products are available in step-down (buck), step-up (boost), step-down and step-up (buck- boost), battery charger, isolated converter, inverting converter, LED drivers and Digital Power System Management.
Matthew Johnson P
ower design has become more complex as the demand for high power density, efficiency and compliance with EMI standards puts added pressure on designers to find a good balance of these parameters whilst still bringing the project in on schedule and budget.
Analog Devices have recognised and
addressed the demands of complex power system design with their innovative Power by Linear µModule (micromodule) regulators and dc-to-dc power products. These devices integrate the controllers, power transistors, input and output capacitors, compensation components, and inductors in a complete system-in-package (SiP) power management solution.
Digital power system management The µModule product range also includes regulators with a PMBus/SMBus/I2C digital serial interface, also called PSM (power system management), which enables system designers and remote operators to command and supervise a system’s power condition and consumption via a digital bus. The digital bus can be used to control and monitor output voltage, sequencing and margining, current, temperature and the fault log. This ability to digitally change power supply parameters helps to reduce time-to-market and downtime by eliminating what would have historically required physical hardware, circuits, and/ or system bill-of-material modifications. The Module regulators simplify system characterisation, optimisation, and data mining during prototyping, deployment, and field operation.
Gerber files along with a suite of design and simulation products; LTspice and LTpowerCAD. The Digital Power System Management (PSM) products are supported in LTpowerPlay which is a powerful, Windows-based GUI development environment. Reference designs are also available for a wide range of applications including those based around FPGA solutions.
Conclusion
There are over 180 products in the µModule range addressing a wide range of system power requirements. Features available in the range include multiple outputs, low EMI, wide temperature range, adjustable loop compensation, sequencing and margining.
The range also has devices which can deliver very high current, for example the LTM4700 device has a digitally adjustable dual 50A or single 100A output current with an output voltage range from 0.5V to 1.8V. The device has a wide input voltage range from 4.5V to 16V and can achieve approximately 90 per cent full load efficiency from 12Vin to 1Vout at 100A. This impressive supply current is also accompanied by a very small PCB footprint – only 3.3cm2.
Silent switcher Also incorporated into some devices from the µModule family is Analog Devices unique Silent Switcher technology, these products have special design and packaging techniques enabling them to offer 95 per cent efficiency at 2MHz while easily
The innovative µModule family of regulators and dc-to-dc power products from Analog Devices offer power designers unparalleled performance, features and flexibility whilst at the same time simplifying what can often be a complex design and improving time to market. Taking this a step further, Anglia can support customer designs with free evaluation kits and samples of Analog Devices products via the EZYsample service which is available to all registered Anglia Live account customers. Anglia’s team of field application engineers are fully conversant with the µModule product
LT8650S EMI/EMC Curve 5V at 3.8A, 3.3V at 4.2V, fSW = 2MHz with Spread Spectrum
Fig.1 - Silent Switcher Noise vs. CISPR 25 Class 5 Limit
passing the CISPR 25 Class 5 Peak EMI limits. See Fig.1.
Design support Analog Devices offers comprehensive support tools for the µModule family including evaluation kits, software and
range and are also on hand to support customers with their designs. Visit the website to see the full range of µModule and other Analog Devices products available from Anglia.
anglia-live.com
µModule integrated system-in-package cross section 8 March 2020 Components in Electronics
www.cieonline.co.uk
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