Texas Instruments bq77915EVM-014, Руководство пользователя

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1 SLUUBU2B – March 2018 – Revised August 2018
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bq77915 3-5S Low Power Protector Evaluation Module
User's Guide
SLUUBU2B – March 2018 – Revised August 2018
bq77915 3-5S Low Power Protector Evaluation Module
This evaluation module (EVM) is a complete evaluation system for the bq77915 3-5S low power protector
for lithium-ion cells. The EVM includes one bq77915 and FETs to control current in a configuration typical
for switching current in a lithium-ion battery pack. The circuit module includes one bq77915 integrated
circuit (IC), sense resistors, thermistor, two
CSD18534Q5A FETs, and all other onboard components
necessary to switch charge and discharge current. The circuit module connects between a battery source
and a pack load. In addition to the current and voltage applied to the module, the user can remove
onboard jumpers to simulate overtemperature or undertemperature conditions to observe FET control
under different charge and discharge conditions. Balancing of unmatched cells can also be performed on
the module.
Contents
1 Features
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1.1 Kit Contents
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1.2 Ordering Information
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1.3 Documentation
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1.4 bq77915 Circuit Module Performance Specification Summary
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2 bq77915EVM Quick-Start Guide
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2.1 Before You Begin
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2.2 Items Needed for EVM Quick Start Evaluation
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2.3 EVM Connections
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2.4 Quick-Start Sequence
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3 Additional Evaluation Setups
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3.1 Operation With Charge and Discharge Currents
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3.2 Reducing the Cell Count
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3.3 Connecting to Cells
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3.4 Stacking Modules
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3.5 Troubleshooting
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3.6 Changing Configuration or Conditions
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4 bq77915EVM Optional Circuit Features
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4.1 Alternate FETs
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4.2 Single-Ended Filter Capacitors
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4.3 Other Uninstalled Components
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4.4 Cell Balance Indicators
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4.5 OCD Timing
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5 Circuit Module Physical Layouts
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5.1 Board Layout
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5.2 Schematic
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6 Bill of Materials
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7 Related Documentation from Texas Instruments
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List of Figures
1 bq77915 Circuit Module Connection for Simple Demonstration
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2 Bipolar Operation
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3 Operation With Reduced Cell Count
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4 Connecting to Cells
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5 Stacking Circuit Modules
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