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| 型号： | A3941KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 9/21页 |
| 文件大小： | 0K |
| 描述： | IC MOSFET FULL BRDG AUTO 28TSSOP |
| 标准包装： | 1 |
| 配置： | 半桥 |
| 输入类型： | PWM |
| 延迟时间： | 90ns |
| 配置数： | 1 |
| 输出数： | 4 |
| 电源电压： | 5.5 V ~ 50 V |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 产品目录页面： | 1140 (CN2011-ZH PDF) |
| 其它名称： | 620-1236-6 |
A3941
Table 1. Phase Control Truth Table
Automotive Full Bridge MOSFET Driver
PWMH
Inputs
PWML PHASE
SR
Outputs
GHA GLA GHB GLB
Bridge
SA SB
Mode of Operation
1
1
0
1
0
0
1
1
0
1
1
1
0
1
1
0
0
0
1
0
X
X
1
0
1
0
X
X
X
1
1
0
0
0
0
X
H
L
L
H
L
L
H
L
L
L
H
H
L
L
H
L
L
L
L
H
L
H
L
L
L
H
L
H
L
H
L
H
L
L
L
L
HS
LS
LS
HS
Z
LS
HS
Z
Z
LS
HS
LS
HS
LS
Z
Z
HS
Z
Bridge driven with A high and B low
Bridge driven with B high and A low
Slow decay, both low-side on or low-side brake
Slow decay, both high-side on or high-side brake
Slow decay, current flow A to B, low-side diode rectification
Slow decay, current flow B to A, low-side diode rectification
Slow decay, current flow A to B, high-side diode rectification
Slow decay, current flow B to A, high-side diode rectification
Fast decay, diode rectification/coast
X = don’t care (same for input 1 or input 0), HS = high-side FET active, LS = low-side FET active, Z = high impedance, both FETs off
Table 2. PWM Options
SR
Inputs a
PWMH PWML
PHASE
PWM Effect b
100% 0%
Decay
Mode of Operation
X
0
1
1
0
0
X
1
PWM
PWM
1
PWM
1
0
1
PWM
1
PWM
1
PWM
0
PWM
1
0
1
0
1
0
1
0
1
0
X
A to B
A to B
B to A
A to B
B to A
A to B
B to A
A to B
B to A
A to B
B to A
Coast
B to A
Coast
Brake
Brake
Brake c
Brake c
Coast
Fast
Fast
Slow
Slow
Slow
Slow
Fast
Full four-quadrant control, zero average load current at 50% PWM
Fast decay, diode recirculation or coast
High-side PWM, low-side MOSFET recirculation
Low-side PWM, high-side MOSFET recirculation
High-side PWM, low-side diode recirculation
Low-side PWM, high-side diode recirculation
Coast, all MOSFETs off
a X
indicates don’t care condition. The action is the same for input 1 or input 0.
b PWM
Effect indicates the effect on the load current direction or the equivalent action.
c With SR disabled, braking is only effective in one direction when sufficient forward voltage is available to allow the diode to conduct.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
9
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| A3942 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Quad High-Side Gate Driver |
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| A3944 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Automotive, Low-Side FET Pre-Driver |
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