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User's Guide
SLUU283D–May 2007–Revised March 2010
bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi
Cell Synchronous Notebook Charger and System Power
Selector
Contents
1 Introduction .................................................................................................................. 1
2 Test Summary ............................................................................................................... 4
3 PCB Layout Guideline ...................................................................................................... 8
4 Bill of Materials, Board Layout and Schematics ........................................................................ 9
List of Figures
1 Original Test Setup for HPA207-001, -004, or -005 ................................................................... 5
2 Original Test Setup for HPA207-002, -003, -006, or -007 ............................................................ 6
3 Test Setup for HPA207-001, -004, or -005 ............................................................................. 7
4 Test Setup for HPA207-002, -003, -006, or -007 ...................................................................... 7
5 Top Layer................................................................................................................... 12
6 2
nd
Layer .................................................................................................................... 13
7 3
rd
Layer..................................................................................................................... 14
8 Bottom Layer............................................................................................................... 15
9 Top Assembly.............................................................................................................. 16
10 Bottom Assembly.......................................................................................................... 17
11 Top Silk ..................................................................................................................... 18
List of Tables
1 Bill of Materials ............................................................................................................. 9
1 Introduction
1.1 EVM Features
• Evaluation Module For the bq24750/50A/51/51A/51B/52/53
• High Efficiency NMOS-NMOS Synchronous Buck Charger With 300 kHz Frequency
• Battery/Adapter to System Power Selector Function
• User-Selectable 2-cell, 3-cell or 4-cell Li-ion Battery Voltage
• User-Programmable Battery Regulation Voltage with External Voltage Source (4.2/cell by Default)
• User-Programmable Charge Current with External Voltage Source (3 A by Default)
• User-Programmable Input Current Limit with External Voltage Source (4.5 A by Default)
• Pin Programmable Interface for Control and Status Communications with Host
• AC Adapter Operating Range 18 V to 22 V
• Adapter Overcurrent Protection
• ACFET Overpower Protection
• LED Indication for Control and Status Signals.
1
SLUU283D–May 2007–Revised March 2010 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous
Notebook Charger and System Power Selector
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