Multi-phase DCDC for cellular base stations

Multi-phase DCDC for cellular base stations

The ASIC provides the low-frequency component of a high-efficient envelope tracking system for cellular base stations. It is highly programmable and can be applied both as converter as well as controller in single, dual and quad phase configurations.

Features:

  • Multi-phase – low ripple
  • High switching frequency (5MHz) – lower BOM due to small external inductors
  • High bandwidth (500kHz)
  • High Power (150W) / High¬† voltage (60V)
  • Wide output dynamic range
  • Broad output power range
  • Current balancing / Current limitation
  • High speed comparators¬† (20ns max delay in complete feedback path)
  • High flexibility – 2×1 phase, 2×2 phase and 1×4 phase
  • GaN output power stage ready
  • 0.35um 80V BCD

Chip layout