参数资料
型号: A4960KJPTR-T
厂商: Allegro Microsystems Inc
文件页数: 27/35页
文件大小: 0K
描述: IC BLDC CTLR BRUSHLESS 32LQFP
标准包装: 1
系列: *
应用: *
输出数: *
电流 - 输出: *
电压 - 负载: *
电源电压: *
工作温度: *
安装类型: 表面贴装
封装/外壳: 32-LQFP 裸露焊盘
供应商设备封装: 32-LQFP(7x7)
包装: 标准包装
其它名称: 620-1452-6
A4960
Serial Register Reference
Automotive, Sensorless BLDC Controller
1 5
1 4
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
0
Config 0
0
0
0
WR
CB1
CB0
BT3
BT2
BT1
BT0
DT5
DT4
DT3
DT2
DT1
DT0
0
0
1
0
0
0
0
1
0
1
0
0
Config 1
0
0
1
WR
VR3
VR2
VR1
VR0
VT5
VT4
VT3
VT2
VT1
VT0
*Power on reset value shown below each input register bit.
1
1
1
1
1
0
0
0
0
0
Configuration Register 0
Configuration Register 1
CB[1:0]
CB1
0
0
Commutation blank time
CB0 Blank Time
0 5 0 μ s
1 1 0 0 μ s
Default
D
VR[3:0] Current sense reference ratio for normal running
conditions.
Typically:
1 0 4 0 0 μ s
1 1 1 m s
The accuracy of t CB is determined by the system clock
frequency as defined in the electrical characteristics table.
BT[3:0] Blank time
t BL = n × 400 ns
where n is a positive integer defined by BT[3:0]
e.g. for the power-on-reset condition
BT[3:0] = [1 0 0 0] then t BL =3.2μs
The range of t BL is 0 to 6μs.
The accuracy of t BL is determined by the system clock
frequency as defined in the electrical characteristics table.
DT[5:0] Dead time
t DEAD = n × 50 ns
where n is a positive integer defined by DT[5:0]
e.g. for the power-on-reset condition
DT[5:0] = [0 1 0 1 0 0] then t DEAD =1μs
The range of is 100ns to 3.15μs. Selecting a value of 0, 1
or 2 will set the dead time to 100ns.
The accuracy of t DEAD is determined by the system clock
frequency as defined in the electrical characteristics table.
V RI = ( n + 1) × 6 . 25 % V REF
where n is a positive integer defined by VR[3:0]
e.g. for the power-on-reset condition
VR[3:0] = [1 1 1 1] then V RI = V REF
If the REF terminal is connected to VDD then V REF is
clamped to V REFC .
The range of V RI is 6.25% V REF to 100% V REF .
VT[5:0] VDS Threshold.
Typically:
V DSTH = n × 25 mV
where n is a positive integer defined by VT[5:0]
e.g. for the power-on-reset condition
VT[5:0] = [1 0 0 0 0 0] then V DSTH =800mV
The range of V DSTH is 0 to 1.575V.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
26
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