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SR037SG Datasheet(PDF) 4 Page - Supertex, Inc |
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SR037SG Datasheet(HTML) 4 Page - Supertex, Inc |
4 / 7 page 4 SR036/SR037 Applications Information Functional Block Diagram V REF CM Reg HV IN Gate Source GND V OUT Operating Principle The SR03x operates by controlling the conduction angle of the external MOSFET as shown in Figure 1. When the rectified AC voltage is below the VTH threshold, the pass transistor is turned on. The pass transistor is turned off when the rectified AC is above HVIN(off). Output voltage (Vunreg) decays during the periods when the switch is off and when the rectified AC is below the output voltage. The amount of decay is determined by the load and the value of C1. Since the switch only conducts with low voltages across it, power dissipation is minimized. Switch ON VTH HVIN VREG VUNREG not to scale Figure 1: Typical Waveforms |
Similar Part No. - SR037SG |
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Similar Description - SR037SG |
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