Microchip Technology MCP1630RD-DDBK3 Manual Do Utilizador
MCP1630V BIDIRECTIONAL 4 CELL
LI-ION CHARGER REFERENCE
DESIGN USER’S GUIDE
© 2006 Microchip Technology Inc.
DS51641A-page 5
Chapter 1. Product Overview
1.1
INTRODUCTION
As high power portable applications continue to gain in popularity, more innovative
techniques are needed to charge the batteries while also providing a low regulated
voltage to the system’s high end digital electronics. For example, laptop computers,
portable test equipment, portable printers, etc., all require more power than a single or
two cell Li-Ion battery pack can efficiently store. As a result, three or four series Li-Ion
cell packs are used to store the necessary that power these high end applications. The
result is a high dc voltage used to store the energy requiring a difficult high voltage to
low voltage dc-dc conversion. The MCP1630V Bidirectional 4 Cell Li-Ion Charger Ref-
erence Design can be used to evaluate a design that boosts a low source voltage to
charge four Li-Ion series cells while providing energy to the system simultaneously.
When the source is removed, the same power train used to charge the battery pack
provides a low regulated voltage to operate the system.
This chapter covers the following topics.
• What is the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design?
• What the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design Kit
techniques are needed to charge the batteries while also providing a low regulated
voltage to the system’s high end digital electronics. For example, laptop computers,
portable test equipment, portable printers, etc., all require more power than a single or
two cell Li-Ion battery pack can efficiently store. As a result, three or four series Li-Ion
cell packs are used to store the necessary that power these high end applications. The
result is a high dc voltage used to store the energy requiring a difficult high voltage to
low voltage dc-dc conversion. The MCP1630V Bidirectional 4 Cell Li-Ion Charger Ref-
erence Design can be used to evaluate a design that boosts a low source voltage to
charge four Li-Ion series cells while providing energy to the system simultaneously.
When the source is removed, the same power train used to charge the battery pack
provides a low regulated voltage to operate the system.
This chapter covers the following topics.
• What is the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design?
• What the MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design Kit
includes.
FIGURE 1-1:
MCP1630V Bidirectional 4 Cell Li-Ion Charger Reference Design
shown in Laptop Computer system level block diagram.
AC/DC
Converter
+
-
Wide Range
ac Input
(85 Vrms to 240 Vrms)
Low Voltage
dc Output (+7.0V)
+3.3V
DC/DC
Converter
+1.XV
DC/DC
Converter
Bidirectional
Charger and
DC/DC Converter
4 Cell Li-Ion
Battery Pack
dc-Bus
MCP1630V