462 - PAC-Designer / Power Manager II: What is the Vbpz Selection in the Trim Configuration Options?
Solution:
Vbpz stands for Voltage-bipolar-zero and represents the nominal DAC output voltage when the DAC is set to mid-scale (0x80). For most applications, this selection can be left to "Auto" and the "Calculate" button in the Trim Configuration dialog will select the best Vbpz value based on the Target Voltages and DC-DC used. In cases where a specific offset-voltage is required, you can select from 0.6, 0.8, 1.0, and 1.25V. For additional information on the Vbpz please see the Controlling Power Supply Output Voltage by Margin/ Trim Block section of the POWR1220AT8 Data Sheet on page 24.
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