LM5026EVAL National Semiconductor, LM5026EVAL Datasheet
LM5026EVAL
Specifications of LM5026EVAL
Related parts for LM5026EVAL
LM5026EVAL Summary of contents
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... The active clamp reset mechanism is presently finding extensive use in medium level power con- verters in the 50 to 200W range. © 2005 National Semiconductor Corporation National Semiconductor Application Note 1387 Robert Bell September 2005 The Forward converter is derived from the Buck topology family, employing a single modulating power switch ...
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Theory of Operation Powering and Loading Considerations When applying power to the LM5026 evaluation board cer- tain precautions need to be followed. A mis-connection can damage the assembly. Proper Connections When operated at low input voltages the evaluation board can ...
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Powering Up (Continued) supply folding back and the evaluation board going into undervoltage shutdown will start an oscillation, or chatter, that may have undesirable consequences. A quick efficiency check is the best way to confirm that everything is operating properly. ...
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Performance Characteristics TURN-ON WAVEFORMS When applying power to the LM5026 evaluation board a certain sequence of events occurs. Soft-start capacitor val- ues and other components allow for a minimal output voltage for a short time until the feedback loop can ...
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Performance Characteristics (Continued) Conditions: Input Voltage = 78VDC Output Current = 25A Trace 1: Q1 drain voltage Volts/div = 20V Horizontal Resolution = 1µs/div FIGURE 5. Conditions: Input Voltage = 48VDC Output Current = 5A Synchronous rectifier, Q3 gate Volts/div ...
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www.national.com 6 ...
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Layout and Bill of Materials The Bill of Materials is shown below and includes the manu- facturer and part number. The layers of the printed circuit board are shown in top down order. View is from the top DESIGNATOR QTY ...
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Layout and Bill of Materials DESIGNATOR QTY www.national.com (Continued) TABLE 1. Bill of Materials (Continued) PART NUMBER DESCRIPTION LM5026MM CONTROLLER, NATIONAL SEMI MOCD207M OPTO-COUPLER, QT OPTO LM6132AIM OPAMP, NATIONAL SEMI LM4041CEM3-1.2 REFERENCE, ...
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PCB Layouts 20154609 9 www.national.com ...
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PCB Layouts (Continued) www.national.com 20154610 10 ...
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PCB Layouts (Continued) 20154611 11 www.national.com ...
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PCB Layouts (Continued) www.national.com 20154612 12 ...
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PCB Layouts (Continued) 20154613 13 www.national.com ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...