Data Sheet
FSB50450 Motion SPM® 5 Series
©2007 Fairchild Semiconductor Corporation 5 www.fairchildsemi.com
FSB50450 Rev. C4
Recommended Operating Condition
Figure 2. Recommended MCU Interface and Bootstrap Circuit with Parameters
3rd Notes:
1. It is recommended the bootstrap diode D
1
to have soft and fast recovery characteristics with 600 V Rating.
2. Parameters for bootstrap circuit elements are dependent on PWM algorithm. For 15 kHz of switching frequency, typical example of parameters is shown above.
3. RC-coupling (R
5
and C
5
) and C
4
at each input of Motion SPM 5 product and MCU (Indicated as Dotted Lines) may be used to prevent improper signal due to surge-noise.
4. Bold lines should be short and thick in PCB pattern to have small stray inductance of circuit, which results in the reduction of surge-voltage. Bypass capacitors such as C
1
, C
2
and C
3
should have good high-frequency characteristics to absorb high-frequency ripple-current.
Figure 3. Case Temperature Measurement
3rd Notes:
5. Attach the thermocouple on top of the heat-sink of SPM 5 package (between SPM 5 package and heatsink if applied) to get the correct temperature measurement.
Symbol Parameter Conditions Min. Typ. Max. Unit
V
PN
Supply Voltage Applied Between P and N - 300 400 V
V
CC
Control Supply Voltage Applied Between V
CC
and COM 13.5 15.0 16.5 V
V
BS
High-Side Bias Voltage Applied Between V
B
and V
S
13.5 15.0 16.5 V
V
IN(ON)
Input ON Threshold Voltage
Applied Between IN and COM
3.0 - V
CC
V
V
IN(OFF)
Input OFF Threshold Voltage 0 - 0.6 V
t
dead
Blanking Time for Preventing
Arm-Short
V
CC
= V
BS
= 13.5 ~ 16.5 V, T
J
150°C 1.0 - - s
f
PWM
PWM Switching Frequency T
J
150°C - 15 - kHz
T
C
Case Temperature T
J
150°C -20 - 125 °C
HIN LIN Output Note
0 0 Z Both FRFET Off
0 1 0 Low side FRFET On
10 V
DC High side FRFET On
1 1 Forbidden Shoot through
Open Open Z Same as (0,0)
COM
VCC
LIN
HIN
VB
HO
VS
LO
P
N
R
3
Inverter
Output
C
3
R
1
D
1
C
1
R
2
Micom
15-V Line
10F
One-Leg Diagram of SPM
?
5 Product
These values depend on PWM
control algorithm
* Example of bootstrap paramters:
C
1
= C
2
= 1F ceramic capacitor,
R
1
= 56 R
2
= 20
R
5
C
5
V
DC
C
2
Case Temperature(Tc)
Detecting Point
14.50mm
3.80mm
MOSFET
Case Temperature(Tc)
Detecting Point
14.50mm
3.80mm
MOSFET