Os motores de busca de Datasheet de Componentes eletrônicos
Selected language     Portuguese  ▼

Delete All
ON OFF
ALLDATASHEETPT.COM

X  

Preview PDF Download HTML

A3985 Folha de dados(PDF) 1 Page - Allegro MicroSystems

Nome de Peças. A3985
descrição  Digitally Programmable Dual Full-Bridge MOSFET Driver
Download  15 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fbricantes  ALLEGRO [Allegro MicroSystems]
Página de início  http://www.allegromicro.com
Logo 

A3985 Folha de dados(HTML) 1 Page - Allegro MicroSystems

 
Zoom Inzoom in Zoom Outzoom out
 1 / 15 page
background image
Description
The A3985 is a flexible dual full-bridge gate driver suitable
for driving a wide range of higher power industrial bipolar 2-
phase stepper motors or 2-phase brushless dc motors. It can
also be used to drive two individual torque motors or solenoid
actuators.MotorpowerisprovidedbyexternalN-channelpower
MOSFETs at supply voltages from 12 to 50 V.
Full digital control is provided by two serially-accessible
registers that allow programming of off-time, blank-time,
dead-time, mixed decay ratios, synchronous rectification,
master clock source selection, and division ratio and idle
mode. All internal timings are derived from a master clock
that can be generated on-chip or provided by an external
clock such as the system clock of the master controller. A
programmable divider allows for a wide range of external
system clock frequencies.
The internal fixed off-time PWM current-control timing is
programmed via the serial interface to operate in slow, fast,
and mixed current-decay modes.The desired load-current level
and direction is set via the serial port with a direction bit and
two 6-bit linear DACs in conjunction with a reference voltage.
The seven bits of control allow maximum flexibility in torque
3985-DS
Features and Benefits
▪ Serial interface for full digital control
▪ Dual full-bridge gate drive for N-channel MOSFETs
▪ Dual 6-bit DAC current reference
▪ Operation over 12 to 50 V supply voltage range
▪ Synchronous rectification
▪ Cross-conduction protection
▪ Adjustable mixed decay
▪ Fixed off-time PWM current control
▪ Low-current idle mode
Digitally Programmable
Dual Full-Bridge MOSFET Driver
Continued on the next page…
Package: 38 pin TSSOP (suffix LD)
Typical Application
A3985
Approximate size


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15 


Datasheet Download




Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é util para você?  [ DONATE ]  

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Política de Privacidade   |   Troca de Link   |   Lista de Fabricantes
All Rights Reserved© Alldatasheetpt.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn