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PWM controller IC enables POL power module designs

Posted: 08 Jul 2013 ?? ?Print Version ?Bookmark and Share

Keywords:ZMDI? PWM controller? point-of-load?

ZMDI has unveiled its fully configurable true-digital, high-performance PWM controller IC for non-isolated, step-down DC/DC point-of-load (POL) supplies. The ZSPM1005 operates in a single-phase and single-rail configuration.

"We call the new ZSPM family member a "hybrid" controller because it delivers the performance and flexibility of the digital world, while in the final application, it is used like a traditional analogue-controller-based POL solution. It combines the best of both worlds," said Tycho Raab, Product Line Manager at ZMDI. "Due to the simplicity of use and the family strategy, the solution is ideal for meeting the POL power module requirements for FPGA designs."

The new ZMDI controller includes a 2-pin-configuration feature to set output voltage, compensation, and other parameters using external resistors. The pin assignments are fully programmable by the Pink Power Designer software during development. In the final application, the ZSPM1005 controller device has the flexibility to configure a curve fitting relationship between the voltage at the configuration pins and parameters such as the output voltage set-point, so digital communication with the DC/DC converter for monitoring or on-the-fly configuration is not required. Since this "hybrid" IC is pin-to-pin compatible with the ZSPM1000, ZMDI's family concept enables POL power module platform designs for modules with and without digital PMBus communication.

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