IRAM136-0461G
www.irf.com 15
Figure 10. Recommended Bootstrap Capacitor Value vs. Switching Frequency
Figure 9. Thermistor Readout vs. Temperature (2kohm pull-up resistor, 5V) and
Nominal Thermistor Resistance values vs. Temperature Table.
-40-40 -30 -20-20 -10 00102020 30 4040 50 6060 70 8080 90 100100 110 120120 130
0.5
1.01.0
1.5
2.02.0
2.5
3.03.0
3.5
4.04.0
4.5
5.05.0
+5V
V
Therm
R
Therm
R
EXT
Thermistor Pin Read-Out Voltage - V
Thermistor Temperature - °C
Min
Avg.
Max
0 5 10 15 20
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
1.5µF
2.2µF
6.8µF
R
BS
D
BS
C
BS
R
G1
R
G2
V
S
H
O
L
O
COM
v
B
V
CC
H
IN
L
IN
+15V
V
SS
V
+
H
IN
L
IN
U,V,W
GND
V
SS
3.3µF
4.7µF
10µF
Recommended Bootstrap Capacitor - µF
PWM Frequency - kHz
T
THERM
R
THERM
T
THERM
R
THERM
T
THERM
R
THERM
°C kƻ °C kƻ °C kƻ
-40 759.605 25 22.000 90 2.004
-35 545.196 30 17.709 95 1.722
-30 396.070 35 14.344 100 1.486
-25 291.025 40 11.688 105 1.287
-20 216.008 45 9.578 110 1.119
-15 161.977 50 7.894 115 0.975
-10 122.638 55 6.540 120 0.854
-5 93.702 60 5.446 125 0.750
0 72.191 65 4.559
5 56.093 70 3.832
10 43.907 75 3.239
15 34.633 80 2.748
20 27.509 85 2.342