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A3932SEQTR-T PDF预览

A3932SEQTR-T

更新时间: 2024-02-11 08:52:44
品牌 Logo 应用领域
急速微 - ALLEGRO 控制器
页数 文件大小 规格书
13页 273K
描述
THREE-PHASE POWER MOSFET CONTROLLER

A3932SEQTR-T 数据手册

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3932  
THREE-PHASE POWER  
MOSFET CONTROLLER  
The A3932SEQ is a three-phase MOSFET controller for use with bi-  
polar 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 oating positive supplies for the gate drive and minimize  
the component count normally required. The high-side circuitry also  
employs a unique FET monitoring circuit that ensures the gate voltages  
are at the proper levels before turn-on and during the ON cycle.  
5
29 SENSE  
28 RC  
GHC  
CC  
6
7
27  
GLB  
SB  
PWM  
8
26 TACH  
25 SR  
Internal xed 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 voltage  
and external sensing resistor. The xed off-time pulse duration is set by  
a user-selected external RC timing network. For added exibility, the  
GHB  
CB  
9
10  
11  
12  
13  
BRAKE  
24  
23  
GLA  
SA  
DIR  
22 H2  
21 H3  
continued ...  
GHA  
FEATURES AND BENEFITS  
Drives Wide Range of N-Channel MOSFETs  
Synchronous Rectication  
Dwg. PP-068-1  
Power MOSFET Protection  
Adjustable Dead Time for Cross-Conduction Protection  
100% Duty Cycle Operation  
Selectable Fast or Slow Current-Decay Modes  
Internal PWM Peak Current Control  
High-Current Gate Drive  
ABSOLUTE MAXIMUM RATINGS  
at TA = 25°C  
Motor Lead Short-to-Ground Protection  
Internal 5-V Regulator  
Supply Voltage, VBB .............................. 50 V  
Peak Regulator Voltage, VREG ............... 15 V  
Brake Input  
Logic Input Voltage Range,  
PWM Torque-Control Input  
Fault-Diagnostic Output  
VIN ................... -0.3 V to VLCAP + 0.3 V  
Sense Voltage Range,  
Tachometer Output  
VSENSE ............................ -5 V to +1.5 V  
Output Voltage Range,  
Thermal Shutdown  
VSA, VSB, VSC .................. -5 V to +50 V  
VGHA, VGHB, VGHC .. -5 V to VBB + 17 V  
VCA, VCB, VCC ..................... VSX + 17 V  
Undervoltage Protection  
Operating Temperature Range,  
TA .................................. -20°C to +85°C  
Junction Temperature, TJ .................. +150°C  
Storage Temperature Range,  
TS ............................... -55°C to +150°C  

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