參數(shù)資料
型號(hào): A3935KLQ
廠商: Allegro MicroSystems, Inc.
英文描述: 3-PHASE POWER MOSFET CONTROLLER
中文描述: 3相功率MOSFET控制器
文件頁(yè)數(shù): 11/16頁(yè)
文件大?。?/td> 317K
代理商: A3935KLQ
3935
THREE-PHASE POWER
MOSFET CONTROLLER
www.allegromicro.com
11
Functional Description (cont’d)
Input Logic
ENABLE xLO
xHI
GLx
GHx
Mode of Operation
0
X
X
0
0
All gate drive outputs low
1
0
0
0
0
Both gate drive outputs low
1
0
1
0
1
High side on
1
1
0
1
0
Low side on
1
1
1
0
0
XOR circuitry prevents shoot-through
Fault Responses
ENABLE
Input
Boost
Reg.
V
REG
Reg.
Fault Mode
FAULT
OVFLT
UVFLT
GHx
GLx
No Fault
X
1
0
0
ON
ON
"
"
Short-to-Battery
1
#
0
0
0
ON
ON
"
"
Short-to-Ground
1
$
0
0
0
ON
ON
"
"
Bridge (V
DRAIN
) Fault
V
REG
Undervoltage
V
BAT
Overvoltage
V
BAT
Undervoltage
'
V
DD
Undervoltage
'
Thermal Shutdown
'
1
%
0
0
0
ON
ON
"
"
X
0
0
0
ON
ON
"
"
X
0
1
0
OFF
&
ON
"
"
X
0
0
1
OFF
OFF
0
0
X
0
Z
Z
OFF
OFF
0
0
X
0
Z
Z
OFF
OFF
0
0
NOTES: x = “Little x ”indicates A, B, or C phase.
X = “Capital X “ indicates a “don’t care”.
Z = High-impedance state.
"
= Depends on xLO input, xHI input, and ENABLE. See Input Logic table.
#
= Short-to-battery can only be detected when the corresponding GLx
= 1. This fault is not detected when ENABLE = 0.
$
= Short-to-ground can only be detected when the corresponding GHx = 1. This fault is not detected when ENABLE = 0.
%
= Bridge fault appears as a short-to-ground fault on all motor phases. This fault is not detected when ENABLE = 0.
&
= Off, only because V
BOOST
V
BAT
is above the voltage threshold of the regulator’s voltage control loop.
'
= These faults are not only reported but action is taken by the internal logic to protect the A3935 and the system.
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