AN-9111
APPLICATION NOTE
© 2015 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.1
• 6/26/15
11
One-Leg Diagram of Motion SPM
VCC
IN
COM
LO
P
N
Inducotor
20V
15V
Switching Pulse
Switching Pulse
VCC
IN
COM
VB
HO
VS
Inducotor
Line stray Inductance < 100nH
Line stray Inductance < 100nH
15V
Only for low side switching
OUT
Figure 7.
Switching Evaluation Circuit
HINx
LINx
I
Cx
v
CEx
10% I
Cx
10% V
CEx
10% I
Cx
90% I
Cx
t
off
t
on
t
c(off)
t
c(on)
10% V
CEx
t
rr
100% I
Cx
Figure 8.
Switching Time Definition
Table 8.
Control Part
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
I
QCC
Quiescent V
CC
Supply
Current
V
CC(H)
=15 V,
IN
(UH,VH,WH)
= 0 V
V
CC(H)
- COM
2.75
mA
I
QBS
Quiescent V
BS
Supply
Current
V
BS
=15 V,
IN
(UH,VH,WH)
=0 V
V
B(U)
– V
S(U)
V
B(V)
– V
S(V)
V
B(W)
– V
S(W)
0.3
mA
V
FOH
Fault Output Voltage
V
CC
=15 V, V
SC
=0 V, V
FO
Circuit: 4.7 k
Ω to
5 V Pull-up
4.5
V
V
FOL
V
CC
=15 V, V
SC
=1 V, V
FO
Circuit: 4.7 k
Ω to
5 V Pull-up
0.5
UV
CCD
Supply Circuit,
Under-Voltage Protection
Detection Level
7.0
8.2
10.0
V
UV
CCR
Reset Level
8.0
9.4
11.0
UV
BSD
Detection Level
7.0
8.0
9.5
UV
BSR
Reset Level
8.0
9.0
10.5
t
FOD
Fault-Out Pulse Width
30
µs
V
IN(ON)
ON Threshold Voltage
Applied between IN
(UH,VH,WH)
- COM,
IN
(UL,VL,WL)
- COM
2.6
V
V
IN(OFF)
OFF Threshold Voltage
0.8
