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A3938SLD Datasheet(PDF) 3 Page - Allegro MicroSystems

Part # A3938SLD
Description  Three-Phase Power MOSFET Controller
PDF  11 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3938SLD Datasheet(HTML) 3 Page - Allegro MicroSystems

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Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
A3938
Three-Phase Power MOSFET Controller
ELECTRICAL CHARACTERISTICS1,2 Unless otherwise noted: T
A = 25°C, VBB = 18 V to 50 V, CLCAP = 0.1 µF, CBOOT = 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, Ivreg = –10 mA
–
V
BB – 2.5
–
V
V
BB = 18 V to 50 V, Ivreg = –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
–
Ω
Pull-Down Switch Resistance
R
DS(ON)
I
gx = 50 mA
–
4
–
Ω
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, Cload = 0
3.5
5.6
7.6
µs
Dead Time, Minimum
t
DEAD
I
DEAD = 780 µA, GLx to GHx, Cload = 0
50
100
150
ns
Continued on next page...



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