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GAMW1V540PMT Datasheet(PDF) 3 Page - Galaxy Power, Inc. |
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GAMW1V540PMT Datasheet(HTML) 3 Page - Galaxy Power, Inc. |
3 / 7 page Part No. 02-GAM-06 Rev. 1.0 – 042805 WWW.GALAXYPWR.COM GAMW1V540 – 3 Galaxy Power Inc. 155 Flanders Road Westborough, MA 01581 Telephone: 508-870-9775 Fax: 508-870-9796 e-mail: info@galaxypwr.com CoolConverter™ Galaxy’s proprietary CoolConverter™ provides: •Patented single-stage power conversion architecture, control, and magnetic design allow unprecedented power density and efficiency in an isolated power supply. • An advanced microcontroller reduces parts count while adding features, performance, and flexibility in the design. •Low common-mode noise as a result of lower capacitance in the transformer from balanced winding design. Protection and Control Valid Input Voltage Range: The converter measures the input voltage and will not allow operation outside of the input voltage specification. As shown by the graphs, hysteresis is added to both the high and low voltage to prevent the converter from turning on and off repeatedly when the voltage is held near either voltage extreme. At low line this assures the maximum input current is not exceeded; at high line this assures the semicon- ductor devices in the converter are not damaged by excessive voltage stress. ON/OFF Logic Option: The ON/OFF control logic can be either Negative (standard) or Positive to enable the converter. For Negative logic the ON/OFF pin is brought to below 1.0V with respect to the –INPUT pin to enable the converter. The pull down must be able to sink 100µA. For Positive logic the ON/OFF pin is brought to greater than 4.0V with respect to the –INPUT pin and be limited to less than 10V. To request the Positive logic version, add the suffix (P) to the stan- dard part number. The ON/OFF pin has a built-in pull up resistor of approximately 100kΩ to +5V. Application Notes Undervoltage Hysteresis 1.0 0 30 34 37 Input Voltage (V) 36 32 33 35 31 Overvoltage Hysteresis 1.0 0 76.5 78.5 80.5 Input Voltage (V) 79.5 77.5 78 80 79 77 |
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