Datasheet AD8450 (Analog Devices) - 2

AD8450* PRODUCT PAGE QUICK LINKS Last Content Update: 02/23/2017 COMPARABLE PARTS REFERENCE MATERIALS
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Press
• Analog Devices Introduces the First Integrated Analog
EVALUATION KITS
Controller Optimizing High-Efficiency Rechargeable Battery Manufacturing • AD8450 Evaluation Board
DOCUMENTATION DESIGN RESOURCES
• AD8450 Material Declaration
Application Notes
• PCN-PDN Information • AN-1319: Compensator Design for a Battery Charge/ Discharge Unit Using the AD8450 or the AD8451 • Quality And Reliability
Data Sheet
• Symbols and Footprints • AD8450: Precision Analog Front End and Controller for Battery Test/Formation Systems Data Sheet
DISCUSSIONS User Guides
View all AD8450 EngineerZone Discussions. • UG-845: AD8450/ADP1972 Battery Testing and Formation Evaluation Board
SAMPLE AND BUY
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TOOLS AND SIMULATIONS
• AD8450 SPICE Macro Model
TECHNICAL SUPPORT
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS PGIA CHARACTERISTICS PGDA CHARACTERISTICS CC AND CV LOOP FILTER AMPLIFIERS, UNCOMMITTED OP AMP, AND VSET BUFFER VINT BUFFER CURRENT SHARING AMPLIFIER COMPARATORS REFERENCE CHARACTERISTICS THEORY OF OPERATION INTRODUCTION PROGRAMMABLE GAIN INSTRUMENTATION AMPLIFIER (PGIA) Gain Selection Reversing Polarity When Charging and Discharging PGIA Offset Option Battery Reversal and Overvoltage Protection PROGRAMMABLE GAIN DIFFERENCE AMPLIFIER (PGDA) CC AND CV LOOP FILTER AMPLIFIERS COMPENSATION VINT BUFFER MODE PIN, CHARGE AND DISCHARGE CONTROL OVERCURRENT AND OVERVOLTAGE COMPARATORS CURRENT SHARING BUS AND IMAX OUTPUT APPLICATIONS INFORMATION FUNCTIONAL DESCRIPTION POWER SUPPLY CONNECTIONS POWER SUPPLY SEQUENCING POWER-ON SEQUENCE POWER-OFF SEQUENCE PGIA CONNECTIONS Current Sensors Optional Low-Pass Filter PGDA CONNECTIONS Reverse Battery Conditions BATTERY CURRENT AND VOLTAGE CONTROL INPUTS (ISET AND VSET) LOOP FILTER AMPLIFIERS CONNECTING TO A PWM CONTROLLER (VCTRL PIN) OVERVOLTAGE AND OVERCURRENT COMPARATORS STEP BY STEP DESIGN EXAMPLE Step 1: Design the Switching Power Converter Step 2: Identify the Control Voltage Range of the ADP1972 Step 3: Determine the Control Voltage for the CV Loop and the PGDA Gain Step 4: Determine the Control Voltage for the CC Loop, the Shunt Resistor, and the PGIA Gain Step 5: Choose the Control Voltage Sources Step 6: Select the Compensation Devices ADDITIONAL INFORMATION EVALUATION BOARD INTRODUCTION FEATURES AND TESTS TESTING THE AD8450-EVALZ PGIA and Offset PGIA Gain Test PGIA in an Application Simple Offset Test Offset in an Application PGDA and Offset Simple Test PGDA in an Application PGDA Offset Overload Comparators VSET Buffer CV and CC Loop Filter Amplifiers CC and CV Integrator Tests Uncommitted Op Amp USING THE AD8450 SCHEMATIC AND ARTWORK OUTLINE DIMENSIONS ORDERING GUIDE