DC-DC CONVERTER
Description
The DC-DC converter is designed to supply the power for ACY25 series notebook computer
of Compal. It supply +5VALWP, +3VALWP, +1.8VALWP, +2.5VP, +CPU_CORE,
+1.25VP,+1.2VP for logical system, and supplies for the built-in NS87591 microprocessor
which handles the keyboard and PMU control functions of the system. The power ON/OFF is
also controlled by NS87591.There is also a charger power source built-in it. It can charge
battery pack whether the computer is ON or OFF.
Features
High efficiency, up to 90%(using battery)
Accept wide range DC input voltage from 8V to 21V
Built-in charger power source
The power ON/OFF is controlled by software
Electrical specification
Input Voltage/Current
10V to 20V at the summing point of AC Adapter and battery
INPUT Current 5A max from battery
INPUT Current 3.5A max from AC Adapter
Temperature Range:
Operating temperature : 0
℃
to 40
℃
storage temperature range : -20
℃
to 65
℃
Chapter 4-3
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