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STK732C Scheda tecnica(PDF) 6 Page - Sanyo Semicon Device |
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STK732C Scheda tecnica(HTML) 6 Page - Sanyo Semicon Device |
6 / 6 page STK732C Choke Coil L1 1. The inductance value shown in the test circuit diagram is for times when the current is zero, and therefore is a reference value. Circuit operation should be checked in the actual mounted configuration of the final product. 2. The inductor L1 should be a product that can handle the high frequencies used in a switching power supply. 3. Be sure to use an inductor with appropriate rated current and magnetic saturation specifications. Current Detection Resistor Rs1 1. Since this resistor carries large currents, its power dissipation must be taken into consideration. 2. Manufacturing variations in the resistor value can change the overcurrent protection circuit’s operating point. Two Output Power Supply Structural Example (connecting to an STK730) Note: It is possible for STK730 input ripple currents to cause L1 to vibrate audibly and adversely influence the 15 V system. If such problems occur, an inductor can be inserted at the point marked with dotted lines in the figure to form an LC filter. Caution: Step down chopper power supplies can generate an overvoltage on the output side equivalent to the input voltage if there is an assembly error on the PC board or if the IC fails. Therefore we strongly recommend the use of a crowbar or other overvoltage protection circuit in power supply designs. No. 4533-6/6 x This catalog provides information as of November, 1997. Specifications and information herein are subject to change without notice. s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. |
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