Collect
Navigate：
A3935 技术资料（含PDF文档）
Description：
print
tel：0755-83031813
email：sumzi@sumzi.com
- Production
- Technology
- Configuration
- Download
Production：
【产品名称】A3935
【产品封装】48-Pin LQFP、 36-Pin SOIC
【产品类别】无刷电机驱动芯片
【生产厂家】ALLEGRO
【技术参数】A3935 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
3935
3-PHASE POWER MOSFET CONTROLLER
— For Automotive Applications
Package JP, 48-Pin LQFP
Package LQ, 36-Pin SOIC
ABSOLUTE MAXIMUM RATINGS
Load Supply Voltages, VBAT, VDRAIN,
VBOOST, BOOSTD ... -0.6 V to 40 V
Output Voltage Ranges,
GHA/GHB/GHC, VGHX .. -4 V to 55 V
SA/SB/SC, VSX ............... -4 V to 40 V
GLA/GLB/GLC, VGLX.... -4 V to 16 V
CA/CB/CC, VCX .......... -0.6 V to 55 V
Sense Circuit Voltages,
CSP,CSN, LSS ............... -4 V to 6.5 V
Logic Supply Voltage,
VDD........................... -0.3 V to +6.5 V
Logic Input/Outputs and OVSET, BOOSTS,
CSOUT, VDSTH ......... -0.3 V to 6.5 V
Operating Temperature Range,
TA ........................... -40°C to +135°C
Junction Temperature, TJ ........... +150°C
Storage Temperature Range,
TS ........................... -55°C to +150°C
* Fault conditions that produce excessive
junction temperature will activate device
thermal shutdown circuitry. These conditions
can be tolerated, but should be avoided.
The A3935 is designed specifically for automotive applications that
require high-power motors. Each provides six high-current gate drive
outputs capable of driving a wide range of n-channel power MOSFETs.
A requirement of automotive systems is steady operation over a
varying battery input range. The A3935 integrates a pulse-frequency
modulated boost converter to create a constant supply voltage for
driving the external MOSFETs. Bootstrap capacitors are utilized to
provide the above battery supply voltage required for n-channel FETs.
Direct control of each gate output is possible via six TTL-compatible
inputs. A differential amplifier is integrated to allow accurate
measurement of the current in the three-phase bridge.
Diagnostic outputs can be continuously monitored to protect the
driver from short-to-battery, short-to-supply, bridge-open, and battery
under/overvoltage conditions. Additional protection features include
dead-time, VDD undervoltage, and thermal shutdown.
The A3935 is supplied in a choice of two packages, a 48-lead low
profile QFP with exposed thermal pad (suffix JP) and a 36-lead 0.8 mm
pitch SOIC (suffix LQ).
FEATURES
Drives wide range of n-channel MOSFETs in 3-phase bridges
PFM boost converter for use with low-voltage battery supplies
Internal LDO regulator for gate-driver supply
Bootstrap circuits for high-side gate drivers
Current monitor output
Adjustable battery overvoltage detection
Diagnostic outputs
Motor lead short-to-battery, short-to-ground, and
bridge-open protection
Undervoltage protection
-40 °C to +150 °C, TJ operation
Thermal shutdown
响拇指报价热线：
0755－83283733, 83031813，33062500
QQ：623069669
MSN：sumzi003@sumzi.com sumzi006@sumzi.com
Email:sumzi@sumzi.com
http://www.sumzi.com
