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wizard step 2 Power Module Wizard login
The next step with designing-in the chosen module is understanding the transient response requirements, output capacitance usage, and ensuring the module is reliably optimized for stability. In this example, the designer is looking at the DLynx 2 7 A Pico module, the PKX007. There is a drop down cell showing different amounts of millivolt range numbers from 10 mV to 100 mV. This is the “maximum allowed change in voltage”. This number represents the window the output voltage needs to stay within during a certain quick change in the load, also referred to as a “transient” in the loading. This value should be easily obtained in the datasheet of the IC being powered (the operating input voltage range of the IC). A designer will want to ensure they do not exceed this limitation. The cell directly underneath defines the maximum “transient” amount (the expected change in the loading at any one time during the operation of the IC being powered). If this value is not readily known, then a value that is 20% to 50% of the max loading of the module can be used. For this example, the designer used 2.5 A. When the “Calculate” button is pressed, a number shows up next to the 47 µF field, the 330 µF field, and the CTUNE and RTUNE fields. In the next step, a schematic will be shown that illustrates exactly where all these customized external components need to be added. Click “Create Design”.
PTM Published on: 2017-07-19