ICsense has successfully developed various DC-DC developments in different technologies for a range of applications:

• Inductive and capacitive
• Buck, boost, buck/boost and flyback (with external transformer)
• Current mode – voltage mode
• Continuous – discontinuous conduction mode (CCM – DCM)
• Synchronous – asynchronous
• Controllers (with an external power device) and converters (fully integrated)
• Low-voltage designs and high-voltage designs (> 70V)
• Currents ranging from 100µA to 1-2A

All these developments involved custom designs. Example target applications are Power-over-Ethernet, power management for cell phones, solar charging of cell phones, power management for medical implants, power management for audio applications and wireless applications.

EXAMPLES

High-speed, high-power multiphase DC-DC controller

• 20-60V
• 1, 2, 4 multiphase controller
• High bandwidth > 1 MHz
• Low output impedance 0.1Ohm
• Continuous conduction mode
• 0.35um BCD technology

High-efficiency, low-power buck/boost converter for medical applications

• Synchronous
• Discontinuous buck/boost
• Efficiency up to 93%
• Quiescent current of a few 10uA
• 4 programmable modes
• 0.18um CMOS technology

High-efficiency buck/boost converter for Li-Ion batteries

• Synchronous
• Discontinuous buck/boost
• Current control
• Efficiency higher than 88%
• Quiescent current of a few 10uA
• 0.5um CMOS technology

Versatile flyback controller for Power-over-Ethernet applications

• 57V operation
• Synchronous
• Discontinuous/continuous
• Flyback/forward/boost
• Isolated/non-isolated
• Current control
• Slope compensation
• High-power/high-current (>1A on chip)
• DC gain boosting
• 0.35um BCD technology