ICsense

Power management and high voltage IC design are two key expertise fields. Several DCDC developments in different technologies for a range of applications, have been carried out:

• Inductive and capacitive
  
• Buck, boost, buck/boost and fly-back (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 designs are custom designs for a.o. 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. Some of the customers in that area are On Semiconductor, NXP, Cochlear, …

Examples:
High-speed, high-power multiphase DCDC controller

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

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

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

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