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PDF ACT5101-1 Data sheet ( Hoja de datos )
| Número de pieza | ACT5101-1 | |
| Descripción | ACT5101-1 HIGH VOLTAGE 3-PHASE BRUSHLESS DC MOTOR DRIVE | |
| Fabricantes | Aeroflex Circuit Technology | |
| Logotipo |  |
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ACT5101-1 HIGH VOLTAGE 3-PHASE
BRUSHLESS DC MOTOR DRIVE
Features
• 500 VDC RATING
• 40 AMP CONTINUOUS CURRENT (UP TO 85°C)
• PACKAGE SIZE 3.0" X 2.1" X 0.39"
• 4 QUADRANT CONTROL
• 6 STEP TRAPEZOIDAL DRIVE CAPABILITY
• MILITARY PROCESSING AVAILABLE
• MIL-PRF-38534 COMPLIANT CIRCUITS
AVAILABLE
• ISOLATED UPPER AND LOWER GATE DRIVERS
• FULL MILITARY (-55°C TO +125°C) TEMPERATURE
RANGE
+15V
+15V
+15V
SD
+15V
Ux
DC / AC
Converter
Optical
Isolation
XFMR
&
Rect
+15V
Lx
XFMR
&
Rect
To Other Sections
FIGURE 1 – BLOCK DIAGRAM
Phase V+
Phase OUT
Phase RTN
CIRCUIT TECHNOLOGY
www.aeroflex.com
General Description
The ACT5101-1 high voltage 3
phase brushless DC motor drive
combines a 500 VDC, 40A high
power output stage along with
low power digital input and gate
drive stages. A digital lock-out
feature protects the output stage
from accidental cross-conduction
thus preventing shoot-through
conditions. The ACT5101-1 also
includes a floating gate drive
design for each upper and lower
transistor. On-board gate drive
supplies provide a continuous
floating voltage for each upper
and lower transistor, even during a
motor stall.
The high power output stage
rated at 500 VDC, 40A is capable
of delivering over 20 kW to the
load even after derating. This is
accomplished through the use of
high power IGBTS with ultra-fast
recovery rectifiers in parallel.
The ACT5101-1 utilizes power
hybrid technology to provide the
highest levels of reliability and
lightest weight while requiring the
smallest amount of board space.
The ACT5101-1 is available with
military processing and operates
over the full -55 to +125 degrees C
temperature range.
This makes the ACT5101-1 ideal for
all military, space,and commercial
avionics' applications. These incl-
ude electro-hydrostatic actuators
[EHA's] and electro-mechanical
actuators [EMA's] for flight surface
control, missile fin actuators, thrust
vector control, electric brakes,
fuel and cooling pumps.
eroflex Circuit Technology – Motor Driver Modules For The Future © SCD5101-1 REV D 5/14/01
1 page  
FUNCTION
V+ A
V+ B
V+ C
+15V
GND
RTN A
RTN B
RTN C
PHASE A
PHASE B
PHASE C
UA
LA
UB
LB
UC
LC
SD
N/C
PIN #
11
7
3
12
19,22,26
8
5
1
9
6
2
18
17
21
20
25
24
23
4,10,13-16
DESCRIPTION
High Voltage D.C. Bus, Phase A
High Voltage D.C. Bus, Phase B
High Voltage D.C. Bus, Phase C
+15 VDC input required to power gate drive supply and gate drive circuitry of all
three phases.
Reference for LOGIC supply, +15V supply, and digital inputs.
Return for High Voltage Bus, Phase A.
Return for High Voltage Bus, Phase B
Return for High Voltage Bus, Phase C
Output to motor winding Phase A
Output to motor winding Phase B
Output to motor winding Phase C
Digital input to Phase A upper transistor
Digital input to Phase A lower transistor
Digital input to Phase B upper transistor
Digital input to Phase B lower transistor
Digital input to Phase C upper transistor
Digital input to Phase C lower transistor
Digital shut-down input to enable / disable all six gate drives
No connection Internally
DIGITAL INPUT STAGE
The ACT5101-1 offers complete flexibility by allowing the user to turn on/off each of the 6 IGBTS in any order
or combination desired which enables the hybrid to be commutated in a 6 step trapezoidal mode. The only
unacceptable combination would be to turn on an upper and lower transistor of the same phase. This is not
a desirable condition for normal operation and is therefore not allowed. The ACT5101-1 has a digital lockout
feature that prevents turn-on of two in-line transistors. Damage to one or both of the transistors would occur
if this protection circuitry was not present in the hybrid. As a safety precaution, it is still recommended that a
500 nsec dead time be installed between commands at the inputs of the upper and lower transistors of the
same phase. This will compensate for any lag in transistor turn-off due to the inductive load.
The SD input allows the user to enable/disable the drive stage of the ACT5101-1 on demand. This input can
be incorporated into the user's temperature or current monitoring circuitry to shutdown the hybrid if
excessive current or case temperatures are sensed.
The digital input circuits are of the Schmitt trigger type with hystersesis of at least 1.6 volts, thus greatly
enhancing the input noise immunity. The inputs are internally pulled up to 15 volts so that an uncommitted
input is sensed as "OFF", providing a measure of protection against an accidental input disconnect.
GATE DRIVE
The ACT5101-1 includes a gate drive supply which provides a floating voltage for each upper and lower
transistor. This constant voltage allows the motor to be operated at very low duty cycles or driven into a stall
without any loss of upper or lower gate drive. This performance could not be obtained with only a
conventional boot strap design.
Aeroflex Circuit Technology
5 SCD5101-1 REV D 5/14/01 Plainview NY (516) 694-6700
5 Page 
TjDIODE = [Pd] ⋅ θjcDIODE + TC
θjcDIODE = 0.85°C/W
TC = 85° C
TjDIODE = 29.25 ⋅ 0.85° + 85°
TjDIODE = 109.9° C
Maximum hybrid dissipation will be:
PHYBRID = 2[Ps + Pc + Pd]
PHYBRID = 2[125 + 4 + 29.25]
PHYBRID = 316.5 W
MECHANICAL
The ACT5101-1 construction utilizes only the highest quality materials and manufacturing available to
ensure a high reliability, robust power hybrid design. The case is selected for best thermal conductivity,
hermeticity, and voltage/current carrying capability. The case is electrically isolated from the circuit and
can withstand 1500 VAC from pin to case, and input pins to output pins, therefore no insulating pads or
washers are required for mounting.
In order to remove the heat being generated from the ACT5101-1, it must be bolted down to the motor, a
heat sink or the actual system chassis such as a missile structure or aircraft wing rib for example. Thermally
conductive grease or a "Sil-pad" is recommended between the hybrid case baseplate and its mounting
surface to fill in any surface imperfections and improve the heat transfer from case-to-heat sink. It is
important to keep the temperature at this interface no greater than +125 degrees C in order to maintain
safe semi-conductor junction temperatures.
The leads of the ACT5101-1 can be formed upward, away from the baseplate, so that a PC board can be
mounted directly above it. A wiring harness can also be hand-wired and soldered directly to the leads of
the ACT5101-1 if this is preferred.
Aeroflex Circuit Technology
11 SCD5101-1 REV D 5/14/01 Plainview NY (516) 694-6700
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ACT5101-1.PDF ] | |
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