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UC1525B-SP Scheda tecnica(PDF) 6 Page - Texas Instruments |
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UC1525B-SP Scheda tecnica(HTML) 6 Page - Texas Instruments |
6 / 13 page PRINCIPLES OF OPERATION AND TYPICAL CHARACTERISTICS 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 acheived with speed-up capacitors C, and C2. Output Circuit (½ Circuit Shown) 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 directly by the UC1525B. Automatic reset occurs during dead time, when both ends of the primary winding are switched to ground. UC1525B-SP SLUS874 – JANUARY 2009............................................................................................................................................................................................... www.ti.com 6 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): UC1525B-SP |
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