Single Inductor Multiple Output (SIMO) DC-DC converter for PA envelope tracking in mobile devices

Single Inductor Multiple Output (SIMO) DC-DC converter for PA envelope tracking in mobile devices

The SIMO DC-DC converter offers a high-efficient power conversion in combination with a low BOM/cost. It is part of a power amplifier (PA) envelope tracking system for use in battery-operated mobile devices. This ASIC provides simultaneously multiple outputs above and below the input voltage.

FEATURES

  • Single battery input voltage
  • Single external inductor
  • Multiple supply voltages
  • Lower BOM : only one inductor
  • High power conversion efficiency
  • Outputs regulated independently
  • Buck and / or boost outputs
  • Temperature : -40°C to 85°C
  • 0.18um BCD