EVALPM6680

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Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS provide an excellent way to develop, demonstrate, evaluate and prototyping various power conversion and control designs. In this article, we\'ll explain the application field and working principle of EVALPM6680.

EVALPM6680 is an evaluation board for a full-featured, mid-power, boost switching power supply. It is designed to help engineers get up and running quickly when evaluating Infineon\'s PM6680 power stage solution. EVALPM6680 uses the TinyK22 as an example of how to use the PM6680 when developing sophisticated demanding and dynamic switching power supply solutions, which need higher CPU performance. EVALPM6680 can be used to evaluate high-voltage power stages, isolated DC/DC stages, linear regulators, power factor correction, or voltage control applications.

In a typical application, EVALPM6680 operates as a boost converter, operating in the continuous conduction mode (CCM). Its output voltage, Vout, is varied by adjusting the reference voltage, Vref. The device responds quickly to changes in load, without the use of an input filter. The output voltage can also be controlled using a voltage feedback loop. The EVALPM6680 board includes a linear regulator, which is used to generate a stable reference voltage and a 4-A MOSFET, which is used to switch the FETs.

The main components of the EVALPM6680 are the PM6680 power stage, TinyK22 controller, FETs and linear regulator. The PM6680 switching power stage IC integrates all of the major components of a power supply into a single package, providing an accurate, reliable, and ultra-low component count solution. This IC provides a very high efficiency and handles up to 4.2 A of continuous current. It operates at a frequency of 250 kHz and drives the switching FETs in parallel.

The TinyK22 controller is a highly integrated and powerful microcontroller. It can be used to generate commands to drive the high-side and low-side of the switches, and it can also be used to perform voltage feedback loop functions. The controller can be programmed with multiple registers to customize the switching power supply operation for different applications and power stages.

The second main component in the EVALPM6680 is the FETs (field-effect transistors). FETs are used to control the current flow by turning on and off the switches in the circuit. The FETs are driven by the PM6680 which itself is driven by the TinyK22 controller. The PM6680 is designed to protect the FETs from over-current, over-voltage, and over-temperature conditions.

The final main component in the EVALPM6680 is the linear regulator. This component is used to generate a stable reference voltage. The PM6680 and TinyK22 then use this voltage to regulate the output voltage. By appropriately programming the TinyK22, it is possible to create a closed-loop voltage feedback loop, which further enhances the stability of the output voltage.

EVALPM6680 is an incredibly useful evaluation board for testing a variety of power conversion and control designs. As described above, it combines the PM6680 power stage, TinyK22 controller, FETs and linear regulator into one package, giving designers an efficient, reliable, and low-cost solution to evaluate power conversion and control circuits.

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