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參數(shù)資料
| 型號(hào)： | 3946 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Half-Bridge Power MOSFET Controller |
| 中文描述： | 半橋式功率MOSFET控制器 |
| 文件頁(yè)數(shù)： | 1/14頁(yè) |
| 文件大?。?/td> | 459K |
| 代理商： | 3946 |
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D
2
3946
Half-Bridge Power MOSFET Controller
The A3946 is designed speci
fi
cally for ap pli ca ions that require
high power unidirectional dc motors, three-phase brushless dc motors, or
other inductive loads. The A3946 provides two high-current gate drive
outputs that are capable of driving a wide range of power N-channel
MOSFET
s. The high-side gate driver switches an N-channel
MOSFET
that controls current to the load, while the low-side gate driver switches
an N-channel
MOSFET
as a synchronous recti
fi
er.
A bootstrap capacitor provides the above-battery supply voltage
required for N-channel MOSFETs. An internal charge pump for the
high side allows for dc (100% duty cycle) operation of the half-bridge.
The A3946 is available in a choice of two power pack ag es: a
16-lead
SOIC
with copper batwing power tab (part number suf
fi
x
LB
),
and a 16-lead
TSSOP
with ex posed thermal pad (suf
fi
x
LP
).
High-current gate drive for driving a wide range of
N-channel
MOSFET
s
Bootstrapped gate drive with charge pump for 100% duty cycle
Overtemperature protection
Undervoltage protection
–40oC to 135oC ambient operation
On-chip charge pump for 7 V minimum input supply voltage
Always order by complete part number:
Load Supply Voltage, V
BB
.............................
60 V
Logic Inputs..................................
–0.3 V to 6.5 V
Pin S……..........................................
–4 V to 60 V
Pin GH ...........................................
–4 V to 75 V
Pin BOOT…..................................
–0.6 V to 75 V
Pin DT ........................................................
V
REF
Pin VREG ......................................
–0.6 V to 15 V
Package Thermal Resistance, R
JA
A3946KLB.....................................
48
°
C/W
1
A3946KLB.....................................
38
°
C/W
2
A3946KLP.....................................
44
°
C/W
1
A3946KLP.....................................
34
°
C/W
2
Operating Temperature Range, T
A
..
–40
°
C to +135
°
C
Junction Temperature, T
J
...........................
+150
°
C
Storage Temperature Range, T
S
....
-55
°
C to +150
°
C
Notes:
1. Measured on a two-sided PCB with 3 in.
2
of
2 oz. copper.
2. Measured on JEDEC standard High-K board.
AB SO LUTE MAX MUM RAT NGS
A3946KLB SOIC
A3946KLP TSSOP with Exposed Thermal Pad
3
4
5
6
7
8
2
1
14
13
12
11
10
9
15
16
VREG
CP2
CP1
PGND
GL
S
GH
BOOT
VBB
VREF
DT
LGND
RESET
IN2
IN1
~FAULT
FEATURES
Scale 1:1
Scale 1:1
3
4
5
6
7
8
2
1
14
13
12
11
10
9
15
16
VREG
CP2
CP1
PGND
GL
S
GH
BOOT
VBB
VREF
DT
LGND
RESET
IN2
IN1
~FAULT
Part Number
Package
A3946KLB
A3946KLP
16-Lead SOIC; Copper Batwing Power Tab
16-Lead TSSOP; Exposed Thermal Pad
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 3946_04 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Half-Bridge Power MOSFET Controller |
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