參數(shù)資料
型號(hào): A3938SLD
廠商: Allegro MicroSystems, Inc.
英文描述: Three-Phase Power MOSFET Controller
中文描述: 三相功率MOSFET控制器
文件頁數(shù): 3/11頁
文件大?。?/td> 399K
代理商: A3938SLD
3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
D
2
A3938
Three-Phase Power MOSFET Controller
ELECTRICAL CHARACTERISTICS
1,2
Unless otherwise noted: T
A
= 25°C, V
BB
= 18 V to 50 V, C
LCAP
= 0.1 μF, C
BOOT
= 0.1 μF,
C
VREG
= 10 μF, PWM = 22.5 kHz, square wave, two phases active
Characteristics
Symbol
Test Conditions
Min.
Typ.
1
Max.
Units
Quiescent Current
I
VBB
RESET = 1, Coast mode, stopped
8.0
mA
LCAP Regulator
V
LCAP
I
lcap
= –3.0 mA
4.75
5
5.25
V
VREG =VBB Supply Voltage Range
V
REG
VREG = VBB, observe maximum rating = 15 V
10.8
13.2
V
VREG Output Voltage
V
REG
V
BB
= 13.2 V to 18 V, I
vreg
= –10 mA
V
BB
– 2.5
V
V
BB
= 18 V to 50 V, I
vreg
= –10 mA
12.4
13
13.6
V
VREG Load Regulation
V
REGLOAD
I
vreg
= –1 mA to –30 mA, Coast mode
25
mV
VREG Line Regulation
V
REGLIN
I
vreg
= –10 mA, Coast mode
40
mV
Control Logic
Logic Input Voltage
V
IN(1)
Minimum high level for logical 1
2.0
V
V
IN(0)
Maximum low level for logical 0
0.8
V
Logic Input Current
I
IN(1)
V
IN
= 2.0 V
–30
–90
μA
I
IN(0)
V
IN
= 0.8 V
–50
–130
μA
Gate Drive
Low-Side Drive, Output High
V
HGL
I
gx
= 0
V
REG
– 0.8
V
REG
– 0.5
V
High-Side Drive, Output High
V
HGH
I
gx
= 0
10.4
11.6
12.8
V
Pull-Up Switch Resistance
R
DS(ON)
I
gx
= –50 mA
14
Pull-Down Switch Resistance
R
DS(ON)
I
gx
= 50 mA
4
Low-Side Switching, 10/90 Rise Time
tr
GL
C
load
= 3300 pF
120
ns
Low-Side Switching, 10/90 Fall Time
tf
GL
C
load
= 3300 pF
60
ns
High-Side Switching, 10/90 Rise Time
tr
GH
C
load
= 3300 pF
120
ns
High-Side Switching, 10/90 Fall Time
tf
GH
C
load
= 3300 pF
60
ns
Propagation Delay; GHx,GLx Rising
T
pr
PWM to gate drive out, C
load
= 3300 pF
220
ns
Propagation Delay; GHx,GLx Falling
T
pf
PWM to gate drive out, C
load
= 3300 pF
110
ns
Dead Time, Maximum
t
DEAD
V
dead
= 0, GHx to GLx, C
load
= 0
3.5
5.6
7.6
μs
Dead Time, Minimum
t
DEAD
I
DEAD
= 780 μA, GLx to GHx, C
load
= 0
50
100
150
ns
Continued on next page...
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