參數(shù)資料
型號: A3935KJP
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
文件頁數(shù): 4/16頁
文件大小: 317K
代理商: A3935KJP
3935
THREE-PHASE POWER
MOSFET CONTROLLER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
4
ELECTRICAL CHARACTERISTICS:
unless otherwise noted at T
J
= -40°C to +150°C, V
BAT
= 7 V to 16 V,
V
DD
= 4.75 V to 5.25 V, ENABLE = 22.5 kHz, 50% Duty Cycle, Two Phases Active.
Limits
Characteristics
Symbol
Conditions
Min
Typ
Max
Units
Power Supply
V
DD
Supply Current
I
DD
All logic inputs = 0 V
7.0
mA
V
BAT
Supply Current
I
BAT
All logic inputs = 0 V
3.0
mA
Battery Voltage Operating Range
V
BAT
7.0
40
V
Bootstrap Diode Forward Voltage
V
DBOOT
I
DBOOT
= -I
cx
= 10 mA, V
DBOOT
= V
REG
– V
CX
0.8
2.0
V
I
DBOOT
= -I
cx
= 100 mA
1.5
2.3
V
Bootstrap Diode Resistance
r
DBOOT
r
D
(100 mA) = [V
D
(150 mA) – V
D
(50 mA)]/100 mA
2.5
7.5
Bootstrap Diode Current Limit
I
DM
3 V < [V
REG
– V
CX
] < 12 V
-150
-1150
mA
Bootstrap Quiescent Current
I
CX
V
CX
= 40 V, GHx = ON
10
30
μA
Bootstrap Refresh Time
t
refresh
V
SX
= low to guarantee
V = +0.5 V refresh of
0.47 μF Boot Cap at V
cx
– V
sx
= +10 V
2.0
μs
VREG Output Voltage
1
V
REG
V
BAT
= 7 V to 40 V, V
BOOST
from Boost Reg
12.7
14
V
VREG Dropout Voltage
2
V
REGDO
V
REGDO
= V
boost
– V
reg
, I
reg
= 40 mA
0.9
V
Gate Drive Avg. Supply Current
I
REG
No external dc load at VREG, C
REG
= 10 μF
40
mA
VREG Input Bias Current
I
REGBIAS
Current into V
BOOST
, ENABLE = 0
4.0
mA
Boost Supply
V
BOOST
Output Voltage Limit
V
BOOSTM
V
BAT
= 7 V
14.9
16.3
V
V
BOOST
Output Volt. Limit Hyst.
V
BOOSTM
35
180
mV
Boost Switch ON Resistance
r
DS(on)
I
BOOSTD
< 300 mA
1.4
3.3
Max. Boost Switch Current
I
BOOSTSW
300
mA
Boost Current Limit Threshold Volt.
V
BI(th)
Increasing V
BOOSTS
0.45
0.55
V
OFF Time
t
off
3.0
8.0
μs
Blanking Time
t
blank
100
220
ns
NOTES: Typical Data and Typical Characteristics are for design information only.
Negative current is defined as coming out of (sourcing) the specified device terminal.
1. For V
BOOSTM
< V
BOOST
< 40 V power dissipation in the V
REG
LDO increases. Observe T
J
< 150 °C limit.
2. With V
BOOST
decreasing Dropout Voltage measured at V
REG
= V
REGref
– 200 mV where V
REG(ref)
= V
REG
at V
BOOST
= 16 V.
Continued next page …
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