Non-Isolated DC-DC Converters
Buck Converter
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- When Switch SC is On, the Inductor Current Increases : ΔI = TON (VIN-VOUT)/L
- When Switch SC is Off, the Inductor Current Decreases: ΔI = TOFF x (VOUT-Vdiode)/L
- Buck Regulators use this Volt-Second principle to maintain regulation by adjusting
the TON and TOFF times or Duty Cycle.
Duty Cycle = TON / (TON + TOFF)
Output voltage = VIN x Duty Cycle (approximately)
IR Product Recommendations
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Control Switches VIN= 19V |  |  |
| 12V | | |
| <5V | | |
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