SI9979_04 Datasheet, PDF (3/9 Pages) Vishay Siliconix – 3-Phase Brushless DC Motor Controller

Si9979
Vishay Siliconix
SPECIFICATIONS
Parameter
Protection
Symbol
Test Conditions
Unless Otherwise Specified
V+ = 20 to 40 V, I_DD = 0 mA
Min^a
Low-Side Undervoltage Lockout
Low-Side Hysteresis
High-Side Undervoltage Lockout
Current Limit
UVLL
V_H
UVLH
S_{A, B, C} = 0 V
Comparator Input Bias Current
I_IB
Comparator Threshold Voltage
V_TH
Common Mode Voltage
V_CM
One Shot Pulse Width
t_p
−5
T_A = 0 to 70_C
T_A = −40 to 85_C
C Suffix
90
D Suffix
85
0
R_T = 10 k, C_T = 0.001 mF
8
R_T = 10 k, C_T = 0.01 mF
80
Notes
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
c. The reference voltage is not available for external use.
d. V_CAP = (V+) + (V_DD).
Limits
Typ^b
12.2
0.8
V_DD − 3.3
100
100
10
100
Max^a
110
125
1
12
120
Unit
V
mA
mV
V
ms
COMMUTATION TRUTH TABLE
Inputs
Outputs
Conditions
Sensors
(60_Spacing)
Sensors
(120_Spacing)
Top Drive
Bottom Drive
IN_A
IN_B IN_C
IN_A
IN_B
IN_C
EN
F/R
BR
K
I_S+
GT- GT- GT- GB GB GB _FAULT
A
B
C
A
B
C
0
0
0
1
0
1
1
1
0
0
1
0
0
0
1
0
1
1
0
0
1
0
0
1
1
0
0
1
0
0
0
0
1
1
1
1
0
1
1
0
1
1
0
0
0
1
0
0
0
1
1
1
1
1
0
1
0
1
1
0
0
0
1
0
1
0
0
1
0
1
1
0
1
1
1
1
0
0
0
0
1
1
0
0
1
0
0
1
0
0
1
1
1
0
0
0
0
1
0
1
0
1
0
0
0
1
0
1
1
0
0
0
0
1
0
1
0
0
1
1
0
0
1
0
0
1
0
0
0
0
0
1
1
0
0
1
1
1
0
1
1
0
1
0
0
0
0
0
1
0
1
0
1
1
1
1
0
1
0
1
0
0
0
1
0
0
0
1
0
1
0
1
1
0
1
1
1
0
0
0
1
0
0
0
0
1
1
0
0
1
0
0
1
1
0
0
0
0
1
0
0
0
1
1
X
X
X
X
X
X
0
X
0
X
0
0
0
0
0
0
0
Disable
X
X
X
X
X
X
0
X
1
X
0
0
0
1
1
1
0
Power Down
L
L
L
L
L
L
1
X
1
0
0
0
0
1
1
1
1
Brake
L
L
L
L
L
L
1
X
1
1
0
0
0
1
1
1
0
Over I in BRK
L
L
L
L
L
L
1
X
0
1
0
0
0
0
0
0
0
Over I
1
0
1
1
1
1
1
X
0
X
0
0
0
0
0
0
0
1
0
1
1
1
1
1
X
1
X
0
0
0
1
1
1
0
0
1
0
0
0
0
1
X
0
X
0
0
0
0
0
0
0
0
1
0
0
0
0
1
X
1
X
0
0
0
1
1
1
0
Notes: L. Any valid sensor combination
X. Don’t care
Document Number: 70012
S-41209—Rev. E, 21-Jun-04
www.vishay.com
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