A3938SEQ Datasheet, PDF (3/11 Pages) Allegro MicroSystems – Three-Phase Power MOSFET Controller

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
LCAP Regulator
VREG =VBB Supply Voltage Range
VREG Output Voltage
VREG Load Regulation
VREG Line Regulation
Control Logic
I_VBB
RESET = 1, Coast mode, stopped
–
–
8.0
mA
V_LCAP
I_lcap = –3.0 mA
4.75
5
5.25
V
V_REG
VREG = VBB, observe maximum rating = 15 V 10.8
–
13.2
V
V_BB = 13.2 V to 18 V, I_vreg = –10 mA
V_REG
V_BB = 18 V to 50 V, I_vreg = –10 mA
–
V_BB – 2.5
–
V
12.4
13
13.6
V
V_REGLOAD I_vreg = –1 mA to –30 mA, Coast mode
–
25
–
mV
V_REGLIN
I_vreg = –10 mA, Coast mode
–
40
–
mV
Logic Input Voltage
Logic Input Current
Gate Drive
V_IN(1)
Minimum high level for logical 1
V_IN(0)
Maximum low level for logical 0
I_IN(1)
V_IN = 2.0 V
I_IN(0)
V_IN = 0.8 V
2.0
–
–
V
–
–
0.8
V
–30
–
–90
µA
–50
–
–130
µA
Low-Side Drive, Output High
High-Side Drive, Output High
Pull-Up Switch Resistance
Pull-Down Switch Resistance
Low-Side Switching, 10/90 Rise Time
Low-Side Switching, 10/90 Fall Time
High-Side Switching, 10/90 Rise Time
High-Side Switching, 10/90 Fall Time
Propagation Delay; GHx,GLx Rising
Propagation Delay; GHx,GLx Falling
Dead Time, Maximum
Dead Time, Minimum
Continued on next page...
V_HGL
V_HGH
R_DS(ON)
R_DS(ON)
tr_GL
tf_GL
tr_GH
tf_GH
T_pr
T_pf
t_DEAD
t_DEAD
I_gx = 0
I_gx = 0
I_gx = –50 mA
I_gx = 50 mA
C_load = 3300 pF
C_load = 3300 pF
C_load = 3300 pF
C_load = 3300 pF
PWM to gate drive out, C_load = 3300 pF
PWM to gate drive out, C_load = 3300 pF
V_dead = 0, GHx to GLx, C_load = 0
I_DEAD = 780 µA, GLx to GHx, C_load = 0
V_REG – 0.8 V_REG– 0.5
–
V
10.4
11.6
12.8
V
–
14
–
Ω
–
4
–
Ω
–
120
–
ns
–
60
–
ns
–
120
–
ns
–
60
–
ns
–
220
–
ns
–
110
–
ns
3.5
5.6
7.6
µs
50
100
150
ns
3
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