参数资料
型号: A4960KJPTR-T
厂商: Allegro Microsystems Inc
文件页数: 28/35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 2 (PWM)
0
1
0
WR
PT4
PT3
PT2
PT1
PT0
1
0
0
0
0
Config 3 (Hold)
0
1
1
WR
IDS
HQ3
HQ2
HQ1
HQ0
HT3
HT3
HT1
HT0
*Power on reset value shown below each input register bit.
0
0
1
0
1
0
1
0
0
Configuration Register 2
Configuration Register 3
PT[4:0] Fixed off time
t OFF = 10 μs + ( n × 1 . 6 μs )
where n is a positive integer defined by PT[4:0]
e.g. for the power-on-reset condition
PT[4:0] = [1 0 0 0 0] then t OFF =35.6μs
The range of t OFF is 10μs to 59.6μs.
The accuracy of t OFF is determined by the system clock
frequency as defined in the electrical characteristics table.
IDS
IDS
0
1
HQ[3:0]
Start-up Torque control method
Start-up Torque control Default
C u r r e n t l i m i t e d D
D u t y c y c l e l i m i t e d
Current sense reference ratio or duty cycle ratio
for hold torque during initial start sequence.
If IDS is 0 then HQ[3:0] sets the hold current.
If IDS is 1 then HQ[3:0] sets the hold duty cycle.
Typically:
V RH = ( n + 1 ) × 6 . 25 % V REF ...... when IDS =0
D H = ( n + 1 ) × 6 . 25 % ............... when IDS =1
where n is a positive integer defined by HQ[3:0]
e.g. for the power-on-reset condition
HQ[3:0] = [0 1 0 1] then
V RH =37.5% V REF ...................... when IDS =0
D H =37.5% ............................... when IDS =1
The range of V RH is 6.25% V REF to 100% V REF .
The range of D H is 6.25% to 100%.
The accuracy of V RH and D H is defined in the electrical
characteristics table.
HT[3:0] Hold Time.
t HOLD = 2 ms + ( n × 8 ms )
where n is a positive integer defined by HT[3:0]
e.g. for the power-on-reset condition
HT[3:0] = [0 1 0 0] then t HOLD =34ms
The range of t HOLD is 2ms to 122ms.
The accuracy of t HOLD is determined by the system clock
frequency as defined in the electrical characteristics table.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
27
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