ADP1974

RECOMMENDED FOR NEW DESIGNS

ADP1974

Bidirectional Synchronous PWM Controller for Battery Test and Formation

RECOMMENDED FOR NEW DESIGNS

Part Details

ADP1974 Typical Application Diagram slide

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Features

Input voltage range: 6V to 60V
On-board 5 V linear regulator
Buck/charge or boost/discharge mode
High PWM linearity with
4 V p-p PWM ramp
FAULT and COMP input compatible with AD8450/AD8451
Programmable dead time control
Adjustable frequency from
50 kHz to 300 kHz
Synchronization output or input with adjustable phase shift
Programmable maximum duty cycle
Programmable soft start
Peak hiccup current-limit protection
Pin-compatible with ADP1972 (asynchronous version)
TSD protection
16-lead TSSOP

Additional Details

The ADP1974 is a constant frequency, voltage mode, synchronous, pulse-width modulation (PWM) controller for bidirectional dc-to- dc applications. The ADP1974 is designed for use in battery testing, formation, and conditioning applications with an external, high voltage field effect transistor (FET) half bridge driver, and an external control device such as the AD8450/AD8451. The device operates as a buck converter in battery charge mode and as a boost converter in discharge mode to recycle energy to the input bus.

The ADP1974 high voltage VIN supply pin can withstand a maximum operating voltage of 60 V and reduces the need for additional system supply voltages. The ADP1974 has integrated features such as precision enable, internal and external synchronization control with programmable phase shift, programmable maximum duty cycle, dead time control, and peak hiccup current-limit protection. Additional protection features include soft start to limit input inrush current during startup, precision enable, and thermal shutdown (TSD). The ADP1974 also has a COMP pin to provide external control of the PWM duty cycle and a FAULT pin that can disable the DH and DL outputs. These functions are compatible with the AD8450/AD8451 analog front-end (AFE) error amplifiers.

The ADP1974 is available in a 16-lead TSSOP package and is pin compatible with the ADP1972.

Applications

Single and multicell battery formation and testing
High efficiency battery test systems with recycle capability
Battery conditioning (charging and discharging) systems
Compatible with AD8450/AD8451 constant voltage (CV) and constant current (CC) analog front end error amplifier

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

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FAQs

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Part Models 2

1ku List Price Starting From $4.94

Documentation

Technical Documents 2

ADP1974: Bidirectional, Synchronous PWM Controller for Battery Test and Formation (Rev.0) 09/28/2015

UG-883: Evaluating the ADP1974 Bidirectional Synchronous PWM Controller for Battery Test and Formation 10/16/2015

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADP1974ARUZ-R7	16-Lead TSSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADP1974ARUZ-RL	16-Lead TSSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

ADP1974ARUZ-R7
Pin/Package Drawing
16-Lead TSSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

ADP1974ARUZ-RL
Pin/Package Drawing
16-Lead TSSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Software & Part Ecosystem

Evaluation Kit

EVAL-ADP1974

ADP1974 Evaluation Board

EVAL-ADP1974

ADP1974 Evaluation Board

Features and Benefits

Evaluation board for testing the features of the ADP1974
Standalone open-loop capability
FAULT and COMP inputs compatible with the AD8450-EVALZ
Compatible for testing with full external customer solutions
Input voltage range: 6 V to 60 V
On-board 5 V low dropout (LDO) regulator
Selective buck or boost mode
Adjustable frequency from 50 kHz to 300 kHz
Programmable dead time control
Synchronization output or input with adjustable phase shift
Programmable maximum duty cycle
Maximum internal duty cycle: 97%
Programmable soft start
Peak hiccup current limit protection
Input voltage UVLO protection
Jumper for enable/shutdown control

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Product Detail

The ADP1974-EVALZ is an open-loop evaluation board that can be used to test the features of the ADP1974. The ADP1974 is a constant frequency, voltage mode, bidirectional synchronous pulse-width modulation (PWM) controller for buck or boost, dc-to-dc, battery charge and discharge applications. When connected to external, high voltage field effect transistors (FET); a half bridge driver; and an external control device, such as the AD8450-EVALZ, the ADP1974-EVALZ can be used to evaluate the ADP1974 in a complete closed-loop application.

The ADP1974-EVALZ can be used to test internal features such as precision enable, pin selective battery charge or recycle mode operation, internal and external frequency synchronization control with programmable phase shift, PWM duty cycle control, programmable maximum duty cycle, programmable dead time, and programmable peak hiccup current limit. Additional protection features that can be evaluated include soft start, input voltage undervoltage lockout (UVLO), fault signaling, and thermal shutdown (TSD).

Complete specifications for the ADP1974 are available in the ADP1974 data sheet, which should be consulted in conjunction with user guide UG-883 when using the evaluation board.

Resources

PDF

UG-883: Evaluating the ADP1974 Bidirectional Synchronous PWM Controller for Battery Test and Formation