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Analog Devices Semiconductor Electronic Components Datasheet

ADP1974 Datasheet

Synchronous PWM Controller

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ADP1974 pdf
Data Sheet
Bidirectional, Synchronous PWM Controller
for Battery Test and Formation
ADP1974
FEATURES
GENERAL DESCRIPTION
Input voltage range: 6 V to 60 V
On-board 5 V linear regulator
Buck/charge or boost/discharge mode
High PWM linearity with internal 4 V p-p PWM ramp voltage
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
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
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.
TYPICAL APPLICATION CIRCUIT
BATTERY CHARGER SYSTEM CONTROL
+24V
VOLTAGE CURRENT
CHARGE/
SETPOINT SETPOINT DISCHARGE
ON/OFF
LOOP
COMPENSATION
ISET MODE
VCTRL
VSET
FAULT
AD8450
BVP0 BVN0 ISVN ISVP
+––+
VIN
VREG
SYNC
SCFG
EN ADP1974
MODE
DH
COMP
FAULT
FREQ
DMAX
GND
DL
CL
DT
SS
HV
MOSFET
DRIVER
ADuM7223
+24V RECYLCING DC BUS
NOTES
1. THE AD8450 AND ADuM7223 ARE SIMPLIFIED REPRESENTATIONS.
Figure 1.
Rev. 0
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Tel: 781.329.4700
©2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


Analog Devices Semiconductor Electronic Components Datasheet

ADP1974 Datasheet

Synchronous PWM Controller

No Preview Available !

ADP1974 pdf
ADP1974* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
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EVALUATION KITS
ADP1974 Evaluation Board
DOCUMENTATION
Data Sheet
ADP1974: Bidirectional, Synchronous PWM Controller for
Battery Test and Formation
User Guides
UG-845: AD8450/ADP1972 Battery Testing and Formation
Evaluation Board
UG-883: Evaluating the ADP1974 Bidirectional
Synchronous PWM Controller for Battery Test and
Formation
DESIGN RESOURCES
ADP1974 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
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SAMPLE AND BUY
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TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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Part Number ADP1974
Description Synchronous PWM Controller
Maker Analog Devices
Total Page 20 Pages
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