LM2586S-12 National Semiconductor, LM2586S-12 Datasheet - Page 11

• Manufacturer Part Number: LM2586S-12
• Description: SIMPLE SWITCHER 3A Flyback Regulator with Shutdown
• Manufacturer: National Semiconductor

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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