lm2586sx-5.0 National Semiconductor Corporation, lm2586sx-5.0 Datasheet - Page 12

• Manufacturer Part Number: lm2586sx-5.0
• Description: Simple Switcher 3a Flyback Regulator With Shutdown
• Manufacturer: National Semiconductor Corporation

Flyback Regulator Operation
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As shown in Figure 4, the LM2586 can be used as a flyback regulator by using a minimum number of external components. The switching waveforms of this
regulator are shown in Figure 5. Typical Performance Characteristics observed during the operation of this circuit are shown in Figure 6.
FIGURE 4. 12V Flyback Regulator Design Example
Typical Performance Characteristics
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A: Switch Voltage, 20V/div
B: Switch Current, 2A/div
C: Output Rectifier Current, 2A/div
D: Output Ripple Voltage, 50 mV/div AC-Coupled
FIGURE 5. Switching Waveforms
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