The development trend of industrial electron product is smaller circuit board dimension, more fashionable appearance and provide cost effectiveness more. As a result of these trends, personnel of electronic system design must reduce printed circuit board (PCB) dimension and cost. Use spot but array of process designing door (FPGA) and piece on system (SoC) industrial system needs course of many power source, face the challenge of small size and low cost at the same time. Compositive and flexible power parts of an apparatus can think this kind of application reduces cost significantly, reduce solution size.

 

Compositive and flexible power parts of an apparatus is in same enclose inside include many DC/DC converter. These DC/DC converter can be individual the step-down converter in enclosing, step up converter and / or any combination of LDO. Graph 1 it is functional-block diagram of a give typical examples, among them LM26480 includes two 2MHz converter of efficient 1.5A step-down and connect a 300mA LDO.

Let us explain through an example use compositive flexible the advantage of power parts of an apparatus. SoC or FPGA pilot do not have system of source control of man-machine design report for tentative idea design. Graph 4 2 component in showing this system, they match IC of power source management completely (PMIC) .

 

 

Graph 2: Schism and compositive power management are comparative

 

Solution of shows two kinds of power source can produce 4 independent power source course, the global location system that is a system (GPS) , input / voltage of output, core and double multiple occupy rate kind 3 (DDR3) power supply. In these two option, the voltage drop that power source of front switch mode will not have man-machine batteries effectively comes voltage of 5V power source, if pursue,the input of 2 is shown. Schism component can reduce this 5V power supply further (if option is shown 1 times) or compositive parts of an apparatus (show 2 times like option) .

 

Imagine, the parts of an apparatus that uses 4 independence is this system power supply: LDO of only channel of two LP3982 300mA and converter of step-down of two TLV62084 2A. You can use the DC/DC converter of these schism to be systematic power supply, but the active package that still needs 4 independence. Have highest dependability problem considering active component, this may not be optimal solution.

 

Replace a solution to be able to be used compositive and flexible power parts of an apparatus, use individual IC to be able to provide the voltage that the system expects and voltaic capability only. If the graph is shown 2 times, this provided a lot of benefit.

 

Above all, compare with schism solution photograph, the cost effectiveness of compositive solution is tall 20 ％ . Next, with the combination of 4 schism parts of an apparatus photograph of circuit board space is compared, the circuit that PMIC solution needs board the space is low 10 ％ . The 3rd, the exterior package that compositive parts of an apparatus needs is little at schism solution, this reduced integral dimension and cost further. Reduce stock detailed account (BOM) amount of parts of an apparatus can raise dependability.

 

Accordingly, when the design needs the system of course of many power source, it is especially in the application that needs FPGA or SoC power supply, consider please compositive and flexible power parts of an apparatus.