Cuk converter

Used for: Stepping a positive voltage to a negative value with high efficiency and low noise


  • Low input and output ripple = small caps
  • Inductors can be coupled for better performance and cost saving
  • Isolated version possible


  • Complex to stabilise
  • Requires two inductors
  • Provides a negative output for positive input (or vice versa)
  • Switch sees Vout + Vin voltage stress