ADBT1002BSWZ-RL

Overview

The ADBT1002 is a four-channel analog front end (AFE) and digital controller designed for battery formation and testing. It integrates precision current and voltage sensing with 12-bit ADCs, a programmable PID digital compensator, and 14-bit PWM generation. The device supports switching frequencies from 62.5 kHz to 500 kHz, multiphase operation, and interchip synchronization. Key specifications include a 40 V/V current sense gain, 0.5 V/V voltage sense gain, and 15-bit setpoint resolution. It operates within a 0°C to +85°C temperature range and communicates via an SPI interface.

Feature Summary

• Four independent channels with integrated AFE, digital PID controller, and 14-bit PWM
• Programmable switching frequency from 62.5 kHz to 500 kHz in powers of two
• Supports multiphase operation with interchip digital current sharing and frequency synchronization
• Integrated 12-bit auxiliary ADC with current excitation for external NTC thermistors

Applications

• Battery formation and testing systems
• High-efficiency battery test systems with recycle capability
• Battery conditioning (charging and discharging) systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel specifications. Confirm that the required operating temperature range aligns with the specified 0°C to +85°C limit. Ensure the host system provides the necessary high-voltage supplies (AHVDD/AHVSS) as the device does not generate these internally.

Selection Notes

Select this component for applications requiring precise digital control of multiple battery channels simultaneously. The internal PID loop and programmable dead time compensation simplify design compared to discrete solutions. Verify that the host microcontroller can support the required SPI communication speed and interrupt handling for real-time status monitoring.

Part Context

The ADBT1002 belongs to Analog Devices' portfolio of power management ICs focused on battery manufacturing equipment. It replaces complex discrete control loops by integrating the analog front end, digital signal processing, and gate drive logic into a single 100-lead LQFP_EP package.

Replacement Considerations

No direct public substitutes are identified in the provided documentation. Designers should evaluate other multi-channel battery controllers from Analog Devices or competitors based on channel count, switching frequency requirements, and integration level.

FAQ

How does the ADBT1002 handle parallel operation?

The device supports multiphase operation within itself and allows multiple ADBT1002 units to be synchronized together via interchip frequency synchronization and digital current sharing using GPIO pins.

What is the maximum switching frequency supported?

The switching frequency is programmable from 62.5 kHz to 500 kHz in powers of two steps.

Does the device support coulombic efficiency measurement?

Yes, the ADBT1002 supports coulombic efficiency measurement through the integration of current over time, with results accessible via registers.