| 12 |
Stop-start systems are designed to lessen the amount of time an engine idles to thereby reduce fuel consumption and
associated emissions, which can be considerable in vehicles that travel in heavy traffic or in urban areas with multiple
traffic lights.
Figure 1: Micro Hybrid
High Power Converter Description
DC/DC converters in these applications are high power, rated at 1-3kW and implementation is best served by using a
multiphase converter due to higher efficiency (>90 percent) from lower switching losses (<500kHz), lower input and output
ripple currents, reduction of hotspots on the PCB or individual components, lower power rated inductors, and Field Effect
Transistors (FETs).
Figure 2: 6-Phase Synchronous Buck Boost Converter with One Inductor/Phase and a Current Sense Resistor