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參數(shù)資料
| 型號： | PW-83075P6NEW |
| 英文描述： | Drives (Power Amplifiers)|3-Phase Torque Controller. Small Plug In Hybrid |
| 中文描述： | 驅(qū)動器（功率放大器）| 3相轉(zhuǎn)矩控制器。小型插入式混合動力 |
| 文件頁數(shù)： | 13/23頁 |
| 文件大?。?/td> | 342K |
| 代理商： | PW-83075P6NEW |
13
Data Device Corporation
www.ddc-web.com
PW-8X010P6/8X030P6/8X075P6
D-02/03-0
10%
90%
t
d (off)
10%
90%
5%
V
BUS
O
I
d (on)
t
r
f
t
t
UPPER / LOWER
on
Ps-
t
on
off
Ps-
FIGURE 7. OUTPUT CHARACTERISTICS
FIGURE 6. 2 QUADRANT POWER
DISSIPATION CIRCUIT
POWER DISSIPATION
There are three major contributors to power dissipation in the
motor drive: conduction losses, switching losses, and flyback
diode losses. Consider the following arbitrary operating condi-
tions for the 2 quadrant example using the PW-8X075.
V
BUS
= V
CE
= +200V
f
PWM
= 10kHz
duty cycle = 50% (ton = 50μs; toff = 50μs)
I
O
= I
C
= 40A, Module Output Current (see FIGURE 6)
during toff, If = I
O
The power dissipation of the 2 quadrant example circuit shown in
FIGURE 6 can now be calculated using information from the
data sheet as follows:
Q1 - Transistor data (Output Stage)
T
J MAX
= 150 °C (TABLE 2)
θ
JC.IGBT
= 0.55°C/W (TABLE 2)
V
CE(SAT)
= 2.2V
E
ON
(50A, 270V) = 1.5 mJ (TABLE 2)
E
OFF
(50A, 270V) = 2.7 mJ (TABLE 2)
CR1 - Flyback diode data
T
J MAX
= 150 °C
θ
JC.
diode = 0.87°C/W (TABLE 2)
V
F
(avg) = 1.7V
1. Q1 Transistor Conduction Losses (P
C
)
P
C
= Ic x V
CE(SAT)
x duty cycle
P
C
= 40A x 2.2 x 50%
P
C
= 40A x 2.2 x 0.5
P
C
= 44W
2. Q1 Transistor Switching Losses (P
S
)
Ps = [E
ON
(scaled) + E
OFF
(scaled)] x f
PWM
Note: E
ON/OFF
(scaled)
from conditions
in TABLE 2.
E
ON
(scaled)
= (
E
ON @
50A, 270V) x (V
BUS
/
270V) x (I
O
/
50A)]
E
ON
(scaled) = [(1.5mJ) x (200V / 270V) x (40A / 50A)]
E
ON
(scaled) = 0.88 mJ
E
OFF
(scaled) = [(E
OFF
@ 50A, 270V) x (V
BUS
/270V) x (I
O
/50A)]
E
OFF
(scaled) = [(2.7 mJ) x (200V/270V) x (40A/50A)]
E
OFF
(scaled) = 1.6 mJ
P
S
= (0.88 mJ + 1.6 mJ) x 10kHz
P
S
= 24.8W
3. CR1 Flyback Diode Losses (Pd)
Pd = I
C
x V
F
(avg) x [1 - duty cycle]
Pd = 40A x 1.7V x [1 - 50%]
Pd = 40A x 1.7V x [1 - 0.5]
Pd = 40A x 1.7V x 0.5
Pd = 34W
4. Q1 Transistor Power Dissipation (P
T
)
P
T
= P
C
+ P
S
P
T
= 44W + 24.8W
P
T
= 68.8W
5. Maximum Allowed Module Case Temperature
T
CASE.ALLOWED.IGBT
= Tjmax -
θ
jc.
IGBT
x P
T
T
CASE.ALLOWED.IGBT
= 150°C - [(0.55°C/W) x (68.8W)]
T
CASE.ALLOWED.IGBT
= 112°C
T
CASE.ALLOWED.
diode
= T
jmax
-
θ
jc.
diode
x Pd
T
CASE.ALLOWED.
diode
= 150°C - [(0.87°C/W) x (34W)]
T
CASE.ALLOWED.
diode
= 120°C
Maximum allowed case temperature for the module will be the
lesser of the allowed diode and allowed IGBT case tempera-
tures:
T
CASE.ALLOWED
= smaller of T
CASE.ALLOWED.
diode
or T
CASE.ALLOWED.IGBT
PW-8X010P6, PW-8X030P6
and PW-8X075P6
V
BUS+
V
BUS-
OUTPUT
MOTOR
φ
A
φ
B
φ
C
Io
ton
1/f
PWM
Ic
If
toff
Q1
CR1
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