SMCS6G25-60 [SENSITRON]
Brushless DC Motor Controller, 25A, HERMETIC PACKAGE-43;
| 型号： | SMCS6G25-60 |
| 厂家： | 
SENSITRON |
| 描述： | Brushless DC Motor Controller, 25A, HERMETIC PACKAGE-43 电动机控制 |
| 文件： | 总13页 (文件大小：144K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
SENSORLESS BRUSHLESS DC MOTOR CONTROLLER
MODULE IN A POWER FLATPACK
25A, 600V
FEATURES:
• Two Quadrant Mode of Operation.
• Fully integrated 3-Phase Sensorless Brushless DC Motor Control Subsystem includes power stage,
non-isolated driver stage, and controller stage
• IGBT Output Stage, with low saturation voltage.
• 20A peak Phase Current with up to400V Maximum DC Bus Voltage
• Internal Precision Current Sense Resistor
• Cycle by cycle current limiting.
• Fixed frequency PWM.
• Direction Input for Direction Reversal.
• Tacho output with frequency proportional to speed
• Analog or PWM command input.
• Hermetic or non-hermetic device (3.10" x 2.10" x 0.385")
• Hermetic Device Part # (SMCS6G25-60)
• Non-Hermetic Device Part # (SMCS6G25-60-1)
APPLICATIONS:
• Fans and Pumps
DESCRIPTION:
SMCS6G25-60 is an, integrated three-phase sensorless brushless DC motor controller/driver
subsystems housed in a 43 Pin power flatpack. SMCS6G25-60 is a completely self-contained motor
controller that converts an analog input command signal into a motor speed. SMCS6G25-60 is best
used as a two quadrant speed controller for controlling/driving fans, pumps, and motors in applications
which require small size.
SMCS6G25-60 is available with an IGBT power stage for DC bus voltage up to 400V. The small size of
this complete motor control module makes it ideal for commercial aerospace and military applications.
• 221 West Industry Court ꢀ Deer Park, NY 11729 ꢀ (631) 586 7600, FAX 631 242 9798 •
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
ABSOLUTE MAXIMUM RATINGS
(TC=25 oC) unless otherwise noted
Characteristic
Maximum
Operating DC Bus Supply Voltage
Maximum Peak DC Bus Supply Voltage
Average Output Current
400 V
600 V
20 A
Peak Output Current
25 A
+15V Supply Voltage
+16.5 V
Logic Input Voltage
-0.3 V to +5.5 V
-55 oC to +150 oC
1.0 oC/W
1.7 oC/W
Operating & Storage Junction Temperature
IGBT Junction-to-Case Thermal Resistance RthjC
Diode Junction-to-Case Thermal Resistance RthjC
Pin-to-Case Voltage Isolation, at room conditions
SMCS6G25-60
600V DC
1000V DC
SMCS6G25-60-1
Lead Soldering Temperature, 10 seconds maximum, 0.125” from case
* Tcase = 25° C
300°C
Recommended Operating Conditions
(TC=25 oC) unless otherwise noted
Characteristic
Maximum
Operating Supply Voltage
Average Output Current
+15V Supply Voltage
300 V
TC=80oC
15 A
+ 15 V +/-10%
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
Recommended Operating Conditions Conditions (TC=25 oC)
PARAMETER SYMBOL CONDITIONS (NOTE 1)
MIN.
TYP.
MAX.
UNITS
Power Output Section
Power Stage Leakage Current IDss at 480V
500
1.8
uA
V
Collector-to-Emitter Saturation Voltage) Ic =15 A
1.5
1.5
Diode Forward Voltage Vf IF = 15 A
Diode Reverse Recovery Time trr IF = 15A, di/dt = 500A/usec,
1.8
100
V
nsec
Control Section
Control Supply Current Icc at +15V supply
+15V Control Turn-On Threshold Tc over operating range
30
11.0
mA
V
8.0
9.5
Current-Sense Amplifier Section
Amplifier Voltage Gain
Slew Rate, rising and falling
0.13
0.70
0.15
1.5
V/A
V/usec
0.17
Logic Input Section
LA1, LA2, Dir, PWM
High Level Input Voltage Threshold
Low Level Input Voltage Threshold
Input Current, 0.0 < Vin <5.0V
3.0
-
-
-
-
30
-
V
V
uA
1.0
-
+5V Reference
Output Voltage Vref
Output Current Io
Load Regulation Iload = 0mA to –20mA
4.7
-
-
5.0
-
-
5.3
30
30
V
mA
mV
Oscillator Section
Oscillator Frequency Fo
18
20.0
22.0
kHz
SPECIFICATION NOTES:
1- All parameters specified for Ta = 2oC, Vcc = +15Vdc, and all Phase Outputs unloaded. All negative currents shown are
sourced by (flow from) the Pin under test.
2- Pulse Test: Pulse Width < 300 µSec, Duty Cycle < 2%.
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
Fig. 2: Mechanical Outline For Hermetic Package, SMCS6G25-60
• 221 West Industry Court ꢀ Deer Park, NY 11729 ꢀ (631) 586 7600, FAX 631 242 9798 •
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
LEAD BEND
OPTIONS
Fig. 3: Mechanical Outline For Plastic Case Package, SMCS6G25-60-1
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
PIN
NUMBER
1
NAME
DESCRIPTION
+15V Input
The +15V power supply connection for the controller. Under-voltage
lockout keeps all outputs off for Vcc below 10.5V. The return of +15V
is Pin 2.
+15V supply should be an isolated power supply.
2
3
4
Gnd
NC
Return for +15V, and +5V supplies
Not connected
Command
Analog input command. A voltage command proportional to the
desired speed is applied at command input. This input is connected to
an internal PWM comparator. Since the motor speed is proportional to
the average phase voltage, the speed is controlled via duty cycle
control. The duty cycle is internally limited to 95% maximum.
Not connected
5
6
7
8
NC
NC
Not connected
Not connected
NC
+5V Output
+5V output for external use. Maximum output current is 30mA. This
pin should be bypassed to Signal Gnd with 1-5µF capacitor.
PWM command input. A variable duty cycle PWM input will override
the analog command input at Pin4. The motor is directly proportional
to the PWM duty cycle. Maximum duty cycle should be limited to 99%.
Outputs are disabled if duty cycle is zero or 100%.
9
PWM
If not used, this Pin should be kept open.
10
11
LA1
LA2
Lead angle control input. Pins are internally pulled down. See table
on page 9 for lead angle as function of LA1 and LA2 settings.
12, 13
Signal Gnd
Reference ground for all control signals of the device. All bypass
capacitors and closed loop compensation components must be
connected as close as possible to pins 12 and 13. These Pins should
not be externally connected to the power ground Pins 27 and 28.
14
Dir
Motor direction input. This Pin is internally pulled down. If pulled high,
motor will reverse rotation. It is not safe to reverse the direction of
rotation when the motor is running at high speed. First reduce the
command input, then reverse direction when the motor speed is
very low.
15
16
17
NC
NC
Not connected
Not connected
Ph-FB
Motor back EMF feedback information. This input is used to optimize
back EMF sensing together with the Ph-Ref input at Pin 18
Motor back EMF reference input
18
19
Ph-Ref
Tach-out
Variable frequency output proportional to the motor speed. This
output frequency is three times, the motor back EMF frequency.
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
PIN OUT (continued)
20
21
NC
Not connected
Clock-Set
Adjustment input for an internal clock frequency. The default clock
frequency is 10MHz
22
23
NC
Not connected
Ioc-Ref
User adjustable over-current limit reference input, depending on the
motor and load requirements. This pin is internally connected to the
over-current comparator for cycle-by-cycle current limiting. It is
internally set to 2.50V by a resistor divider. The pull up to +5V is
20KΩ, and the pull down to Gnd is 20K . This internal setting
corresponds to 16A peak with 10 mΩ current sense resistor and 33A
peak with 5 m current sense resistor.
This reference can be reduced by connecting a resistor between Ioc-
Ref and Signal Gnd. Also, Ioc-Ref can be increased by connecting a
resistor between Ioc Ref and the 5V reference. The over-current
reference voltage is set according to the formula
Ioc-Ref=Rs*Ip*15 volts
(1)
where Rs is the current sense resistor value in ohms and Ip is the
peak current limit in amperes. The internal current sense resistor is
10mΩ . It can handle motor current up to 25A. For higher current, a
5mΩ should be used.
24
25
NC
Iso
Not connected
Output of the current sense amplifier for external monitoring.
This output is feeding internally an over-current limit circuit.
Not connected
26
NC
27, 28
+VDC Return
Motor supply return. Pins 27 and 28 should not be connected to the
signal Gnd Pins 2, 12, 13.
29, 30, 34,
35, 39, 40
Source Terminal
These pins are the source terminals of the three arms of the three-
phase bridge. These Pins shall be shorted together externally using a
low impedance bus to minimize power loss, as shown in Fig. 6.
Phase C terminals. Both terminals shall be used.
31, 32
Phase C Output
+VDC
33, 38, 43
These pins are the motor input power supply positive terminal. These
Pins shall be shorted together externally using a low impedance bus.
+VDC bus should be bypassed to +VDC Rtn with adequately voltage-
rated low ESR capacitor, value is about 10µF per ampere of average
motor current.
36, 37
41, 42
Case
Phase B Output
Phase A Output
NC
Phase B terminals. Both terminals shall be used.
Phase A terminals. Both terminals shall be used.
Not connected
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
Lead angle as function of LA1 and LA2 settings.
LA1
Setting
Low
LA2
Setting
Low
Lead Angle
Electrical Degree
0.0
High
Low
High
Low
High
High
7.5
15
30
Operational Information
SMCS6G25-60 uses back EMF detection for rotor position detection. The position detection is
done in synchronization with the PWM signal. Positional variation occurs in connection with the
frequency of the PWM signal.
Fig. 5. illustrates the back EMF detection.
High Side Gate Drive
Signal
Low Side Gate Drive
Signal
Motor Terminal Voltage
Fig. 4. High Side Gate drive, Low Side Gate drive, and Motor Terminal Voltage
PWM Signal
Back EMF Voltage
Reference
Voltage
Position Detection Signal
Fig. 5. Back EMF and Rotor Position Detection
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
Cycle-by-cycle
Current limiting is provided internally by an over-current comparator. A user adjustable over-
current limit reference input is provided at Pin 23. Also, a current monitoring output is provided at
Pin 25 for current monitoring and/or user current limiting.
The over-current reference adjustment procedure is described in the Pin Description section. The
adjustment resistors, R4 and R5, are as shown in Fig. 6.
Closed Loop Speed Control
The motor speed is directly proportional to the input analog command at Pin 4 or a PWM signal
duty cycle at Pin 9. However, speed regulation is poor in open loop systems. For tight speed
regulation, a closed loop speed control can be implemented as shown in Fig. 6.
A tachometer can be used to provide speed feedback information, and an error amplifier to close
the speed loop.
Motor Terminals Connection
Since the rotor position detection is done through the phases, the phase IDs are irrelevant. Any
motor terminal connection to the controller with the sequence ABC, or BCA, or CAB will results in
the same direction of rotation as long as the controller direction input is not changed. A motor
terminal connection sequence of the opposite as CBA, or BAC, or ACB will result in a reversed
rotation.
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
Fig. 6. Closed Loop Speed Control
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
DC Bus Filtering
To minimize the circuit parasitic inductance effect on the power stage, the layout of Fig. 7 is
suggested. C1, C2, and C3 are 0.1µF to 0.5µF ceramic capacitors, connected across each
leg of the three-phase bridge. Also, a bulk polarized capacitor C4 of about 10µF per ampere
of average motor current should be connected across the DC bus.
Fig. 7 DC Bus Bypass Capacitors
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
Application Information
Two Quadrant Mode Of Operation Of BDC Motor
Fig. 8 illustrates the four possible quadrants of operation for a BDC motor. Two-quadrant mode
refers to a motor operating in quadrants I and III. With a two-quadrant BDC motor, friction is the
only force to decelerate the load.
Two-quadrant mode, modulates only the high-side devices of the output power stage, as shown
in FiG. 4. The current paths within the output stage during the PWM on and off times are
illustrated in Fig. 9. During the on time, both switches S1 and S4 are on, the current flows
through both switches and the motor winding. During the PWM cycle off time, the upper switch
S1 is shut off, and the motor current circulates through the lower switch S4 and D2. The motor is
assumed to be operated in quadrants I or III. During direction reversal in quadrants II and IV, the
motor current path is as shown in Fig. 10.
Two-quadrant mode of operation is the most efficient mode, because the controller and motor
switching losses are minimized. Also, EMI emission is minimum with two-quadrant mode of
operation.
The limitation of two-quadrant mode of operation is, it is not safe to reverse motor direction at
high speed.
In four-quadrant mode, both upper and lower switches are modulated. Motor current always
decays during off time, eliminating any uncontrolled circulating current. In addition, the current
always flows through the current sense resistor. For servo system applications, refer to
SMCT6G20-60, or SMC6G25-60 motor controllers.
Fig. 10 Two-Quadrant
Reverse
Fig. 9 Two-Quadrant
Forward
Fig. 8 Four Quadrants
of Operation
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SENSITRON
SMCS6G25-60
SMCS6G25-60-1
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 5006, REV.ENG 1.1
Preliminary Data Sheet
Cleaning Process:
Suggested precaution following cleaning procedure:
If the parts are to be cleaned in an aqueous based cleaning solution, it is recommended that
the parts be baked immediately after cleaning. This is to remove any moisture that may have
permeated into the device during the cleaning process. For aqueous based solutions, the
recommended process is to bake for at least 2 hours at 125oC.
Do not use solvents based cleaners.
Recommended Soldering Procedure:
Signal pins 1-26: 210C for 10 seconds max
Power pins 27 to 43: 260C for 10 seconds max.
ORDERING INFORMATION
PART NUMBER GUIDE
SMCS6G25-60 is a hermetic part. For non-hermetic add -1 to the end of the part number.
Typical current limit sense resistor values are 5, 10, 20, 30, 50, 60 mOhms. For operating current above
20A, a 5 mOhm resistor will be used. Contact the factory for other options.
Current Sense Resistor value and lead bend options shall be:
SMCS6G25-60-1-YYZ where YY is the sense resistor value and Z is the lead bend option if needed
Part number SMCS6G20-60-1-10B is non-hermetic, has a 10mOhm resistor, and option B lead bend.
DISCLAIMER:
1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product
characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version of the
datasheet(s).
2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment, medical
equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by means of users’
fail-safe precautions or other arrangement .
3- In no event shall Sensitron Semiconductor be liable for any damages that may result from an accident or any other cause during operation of
the user’s units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual property claims or any
other problems that may result from applications of information, products or circuits described in the datasheets.
4- In no event shall Sensitron Semiconductor be liable for any failure in a semiconductor device or any secondary damage resulting from use at
a value exceeding the absolute maximum rating.
5- No license is granted by the datasheet(s) under any patents or other rights of any third party or Sensitron Semiconductor.
6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of Sensitron
Semiconductor.
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exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and regulations.
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