Datasheet > ADP1972

ADP1972

更新时间： 2024-09-27 02:51:35

品牌	Logo	应用领域
亚德诺 - ADI		电池
页数	文件大小	规格书
18页	415K
描述
Buck or Boost, PWM Controller for Battery Test Solutions

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ADP1972 数据手册

Buck or Boost, PWM Controller

for Battery Test Solutions

Data Sheet

ADP1972

FEATURES

GENERAL DESCRIPTION

Input voltage range: 6 V to 60 V

On-board 5 V low dropout regulator

Selective buck or boost mode

Excellent PWM linearity with high amplitude PWM sawtooth

4.0 V p-p

FAULT input compatible with AD8450

COMP input compatible with AD8450

Adjustable frequency from 50 kHz to 300 kHz

Synchronization output or input with adjustable phase shift

Programmable maximum duty cycle

Maximum internal duty cycle: 98%

Programmable soft start

Peak hiccup current limit protection

Input voltage UVLO protection

TSD protection

The ADP1972 is a constant frequency, voltage mode, pulse-width

modulation (PWM) controller for buck or boost, dc-to-dc,

asynchronous applications. The ADP1972 is designed for use in

asynchronous battery testing applications with an external, high

voltage field effect transistor (FET), half bridge driver, and an

external control device, such as the AD8450. The asynchronous

device operates as a buck converter in battery charge mode and

operates as a boost converter in recycle mode to recycle energy

to the input bus.

The ADP1972 high voltage, VIN supply pin can withstand a

maximum operating voltage of 60 V and reduces the need for

additional system supply voltages. The ADP1972 has integrated

features such as precision enable, pin selective buck or boost

mode operation, internal and external synchronization control

with programmable phase shift, programmable maximum duty

cycle, and programmable peak hiccup current limit. Additional

protection features include soft start to limit input inrush current

during startup, input voltage undervoltage lockout (UVLO),

and thermal shutdown (TSD). The ADP1972 also has a COMP

pin to provide external control of the PWM operation and a

FAULT pin that can be signaled to disable the DH and DL

outputs if a fault condition occurs externally to the ADP1972.

16-lead TSSOP

APPLICATIONS

PWM battery test systems with recycle capability including

hybrid vehicles, PCs, and camera batteries

Compatible with AD8450 constant voltage (CV) and constant

current (CC) monitors

The ADP1972 is available in a 16-lead TSSOP package.

TYPICAL APPLICATION CIRCUIT

24V

VIN

SYNC

SCFG

24V RECYLCING

DC BUS

VREG

MODE

MOSFET

DRIVER

FROM

CENTRAL PC

ADP1972

COMP

FAULT

FROM

ANALOG IC

FREQ

DMAX

GND

SENSE

Figure 1.

Rev. B

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

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