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当前位置：ALLEGRO 原装现货热卖 A3932 提供技术资料（PDF文档) 咨询热线：0755－33062500
【产品名称】A3932SEQ
【产品封装】38-pin TSSOP (suffi x LD)、32-pin PLCC (suffi x EQ)、Not to scale
【产品类别】无刷电机驱动芯片
【生产厂家】ALLEGRO
【技术参数】A3932SEQ 技术参数下载
【产品应用】绣花机、打印机、刻字/雕刻机、生化分析仪、扫描仪、稅票机等
【产品说明】原装正品 详情请来电咨询！
Features and Benefits
▪ Drives wide range of N-channel MOSFETs
▪ Synchronous rectification
▪ Power MOSFET protection
▪ Adjustable dead time for cross-conduction pro tec tion
▪ 100% duty cycle operation
▪ Selectable fast or slow current-decay modes
▪ Internal PWM peak current control
▪ High-current gate drive
▪ Motor lead short-to-ground protection
▪ Internal 5 V regulator
▪ Brake input
▪ PWM torque-control input
▪ Fault-diagnostic output
▪ Tachometer output
▪ Thermal shutdown
▪ Undervoltage protection
Packages
Description
The A3932 is a three-phase MOSFET con trol ler for use with
bipolar brushless DC motors. Its high gate-current drive
capability allows driving a wide range of N-channel power
MOSFETs and can support motor supply voltages to 50 V.
Bootstrapped high-side drive blocks provide the float ing
positive supplies for the gate drive and minimize the component
count normally required. The high-side cir cuit ry also em ploys a
unique FET monitoring circuit that ensures the gate voltages are
at the proper levels before turn-on and during the ON cycle.
Internal fixed off-time PWM current-control circuitry can be
used to regulate the maximum load current to a desired value.
The peak load-current limit is set by the user’s selection of
an input reference volt age and external sensing resistor. The
fixed off-time pulse duration is set by a user-selected external
RC timing network. For added flexibility, the PWM input can
be used to provide speed/torque control, allowing the internal
current control circuit to set the maximum current limit.
Optional synchronous rectification is included. This feature will
short out the current path through the power MOSFET reverse
body diodes during the PWM off-cycle current decay. This can
minimize power dissipation in the power MOSFET, eliminate
the need for external power clamp diodes, and potentially allow
more eco nom i cal choices for the MOSFET application.
The A3932 includes the commutation logic for Hall sensors
configured for 120 degree spacing. Power MOSFET protection
features include bootstrap capacitor charging current monitor,
undervoltage monitor, motor-lead short-to-ground, and thermal
shutdown.
The ‘–S–’ part-number suffix in di cates an operating temperature
range of -20°C to +85°C. The ‘–LD–’ suffix in di cates a
38-lead TSSOP package. The ‘–EQ–’ suffix in di cates a 32-lead
rect an gu lar plastic chip carrier (PLCC). The initial ‘–TR–’
variant suffix indicates tape and reel packing. The ‘–T’ final
variant suffix indicates lead (Pb) free composition, with 100%
matte tin leadframe plating.
此类产品本公司大量原装现货热卖
询价热线：
0755－83283733, 83031813，33062500
QQ：623069669
MSN：sumzi003@sumzi.com sumzi006@sumzi.com
Email:sumzi@sumzi.com
http://www.sumzi.com
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