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UC1525AQ Scheda tecnica(PDF) 5 Page - Texas Instruments |
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UC1525AQ Scheda tecnica(HTML) 5 Page - Texas Instruments |
5 / 9 page 5 UC1525A/27A UC2525A/27A UC3525A/27A PRINCIPLES OF OPERATION AND TYPICAL CHARACTERISTICS UC1525A output circuit (1/2 circuit shown). UC1525A output saturation characteristics. For single-ended supplies, the driver outputs are grounded. The VC terminal is switched to ground by the totem-pole source transistors on alternate oscillator cycles. In conventional push-pull bipolar designs, forward base drive is controlled by R1-R3. Rapid turn-off times for the power devices are achieved with speed-up capacitors C1 and C2. The low source impedance of the output drivers provides rapid charging of power FET Input capacitance while minimizing external components. Low power transformers can be driven by the UC1525A. Automatic reset occurs during dead time, when both ends of the primary winding are switched to ground. |
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