LM5069_10 NSC [National Semiconductor], LM5069_10 Datasheet
LM5069_10
Related parts for LM5069_10
LM5069_10 Summary of contents
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Output Voltage Clamping Using the LM5069 Hot Swap Controller The Issue One of the many benefits of using the LM5069 Hot Swap Controller, besides inrush current limiting and fault monitor- ing, is that the controller supplies a voltage to the ...
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The Solution The solution presented here is to limit the voltage maximum value, rather than shut it off, when an over-volt- In normal operation (when the over-voltage condition is not present) the GATE pin of the LM5069 ...
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Test Results Two LM5069 circuits were tested with different value zener diodes for Z1. In both tests the pertinent external components were mohms 12.5 kohms PWR - Power Limit = 5 Watts ...
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Referring to Figure 4, initially V and V IN the GATE pin is at approximately 17.6V. The voltage at the TIMER pin is at zero since the load current is below the cur- rent limit threshold. When V increases quickly ...
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Trace 1: V (20V/div) OUT Trace 2: GATE pin (20V/div) Trace 3: TIMER pin (1V/div) Trace 4: V (20V/div) IN Referring to Figure 6, initially V and V IN GATE pin, which would normally be at 60V if Z1 were ...
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Power Dissipation in Q1 Implementing this voltage clamp requires re-evaluating the possible power dissipation in Q1. During an over-voltage con- dition where V is clamped, the power dissipated OUT due to the voltage difference across Q1 (V ...
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Notes 7 www.national.com ...
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