ETC BC10

HIGH PERFORMANCE BRUSHLESS DC MOTOR DRIVER
BC10/BC20
HTTP://WWW.APEXMICROTECH.COM
M I C R O T E C H N O L O G Y
(800) 546-APEX
(800) 546-2739
PRELIMINARY
FEATURES
• 10V TO 500V MOTOR SUPPLY AT 20 A CONTINUOUS
AND 40 A PEAK OUTPUT CURRENT, BC20
• 10V TO 100V MOTOR SUPPLY AT 10 A CONTINUOUS
AND 20 A PEAK OUTPUT CURRENT, BC10
• OPERATION WITH 10.8V TO 16V VCC, ALLOWING
NOMINAL 12V OR 15 V VCC SUPPLIES
• THREE PHASE FULL BRIDGE OPERATION WITH 2 OR
4 QUADRANT PWM
• AUTOMATIC BRAKING WHEN USING 2 QUADRANT PWM
• THERMAL PROTECTION
• TOP AND BOTTOM RAIL SHORT CIRCUIT PROTECTION
• ANTI SHOOT THROUGH DESIGN
• 50 KHZ INTERNALLY SET PWM FREQUENCY, WHICH
MAY BE LOWERED WITH EXTERNAL CAPACITOR S
• SELECTABLE 60° OR 120° COMMUTATION SEQUENCES
• COMMUTATION TRANSITIONS OUTPUT FOR DERIVING
SPEED CONTROL
• MAY BE USED OPEN LOOP, OR WITHIN A FEEDBACK
LOOP
• ANALOG MOTOR CURRENT MONITOR OUTPUT, MAY BE
USED FOR TORQUE CONTROL OR FOR
TRANSCONDUCTANCE AMPLIfiER DRIVE.
• ANALOG REFERENCE, FEEDBACK, AND TORQUE INPUTS
DESCRIPTION
APPLICATIONS
• 3 PHASE BRUSHLESS MOTOR CONTROL
SSC
2Q
The BC10 and BC20 Brushless DC Motor Controllers provide
the necessary functions to control conventional 3 phase brushless
dc motors in an open loop or closed loop system. The BC10 is able
to control motors requiring up to 1 kW continuous input power; the
BC20 is able to control larger motors requiring up to 10 kW
continuous input power.
Both controllers drive the motors, generate the PWM, decode
the commutation patterns, multiplex the current sense, and provide error amplification. Operation with either 60° or 120° commutation patterns may be selected with a logic input.
Current sense multiplexing is used to make the current monitor
output always proportional to the active motor coils current.
Therefore the current monitor output may be used in generating
transconductance drive for easy servo compensation.
The controller may generate 4-quadrant PWM for applications
requiring continuous transition through zero velocity, or 2 quadrant PWM for electrically quieter operation in unidirectional applications. Direction of rotation may be reversed in 2-quadrant mode
by using the reverse command input. When in 2-quadrant mode
if the motor is stopped or decelerating dynamic braking is automatically applied. In this way deceleration profiles may be followed even when
VCC
HV
HV
using 2-quadrant
PWM.
V+
OE
TOP DRIVE 1
HS1
BOTTOM DRIVE 1
HS2
COMMUTATION
DECODE
LOGIC
HS3
1/2
BRIDGE
1
OUT 1
S1
BRIDGE
CONTROL
LOGIC
120
REV
V+
REF IN
+
–
∑
+
PWM
COMPARATOR
∑
TOP DRIVE 2
PWM
BOTTOM DRIVE 2
1/2
BRIDGE
2
OUT 2
S2
–
FB
V+
TEMP
SENSING
OVERTEMP
SHUTDOWN
TOP DRIVE 3
BOTTOM DRIVE 3
1/2
BRIDGE
3
OUT 3
S3
POWER
FAULT
LOGIC
PWM
OSCILLATOR
OVERCURRENT
CURRENT
SENSING
SIGNAL
CONDITIONING
HV RTN
HV RTN
BLOCK DIAGRAM
TORQUE
CT
FAULT
MOTOR I
GROUND
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
Powered by ICminer.com Electronic-Library Service CopyRight 2003
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
BC10/BC20
ABSOLUTE MAXIMUM RATINGS
MOTOR VOLTAGE, V+
CIRCUIT SUPPLY, Vcc
OUTPUT CURRENT, peak
OUTPUT CURRENT, continuos
POWER DISSIPATION, internal
ANALOG INPUT VOLTAGE
DIGITAL INPUT VOLTAGE
TEMPERATURE, pin solder, 10s
TEMPERATURE, junction1
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE, case
BC10
BC20
100V
16V
20A
10 A
TBD
–0.3V to Vcc+0.3V
–0.3V to 5.35V
300°C
150°C
–65 to 150°C
–25 to 85°C
500V
16V
40A
20A
TDB
–0.3V to Vcc +0.3
–.03V tp 5.35V
300°C
150°C
–65 to 150°C
–25 to 85°C
SPECIFICATIONS
PARAMETER
TEST CONDITIONS
ERROR AMP
OFFSET VOLTAGE
BIAS CURRENT
GAIN, DC2
COMMON MODE VOLTAGE RANGE
UNITY GAIN BANDWIDTH
INPUT AMP
STAGE GAIN2
INPUT IMPEDANCE2
COMMON MODE VOLTAGE
COMMON MODE REJECTI0N
DIFFERENTIAL OFFSET
UNITY GAIN BANDWIDTH
OUTPUT
TOTAL Ron
EFFICIANCY, 10A
SWITCHING FREQUENCY
CURRENT, continuous, BC10
CURRENT, peak, BC10
CURRENT, continuous, BC20
CURRENT, peak, BC20
UNITY GAIN BANDWIDTH
POWER SUPPLY
VOLTAGE, V+ (BC10)
VOLTAGE, V+ (BC20)
VOLTAGE, Vcc
NOTES: 1.
2.
CAUTION
MIN
19.8
0
TYP
20
MAX
UNITS
3.3
4
20.2
Vcc–2.5
mV
pA
db
V
MHz
10.5
V/V
Kohm
1.4
9.5
46
10
2
Vcc/2
80
TBD
1.4
db
MHz
TBD
HIGH
50
10
20
20
40
10
20
20
40
Khz
A
A
A
A
MHz
100
500
16
V
V
V
1.4
10
10
10.8
Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power
dissipation to achieve high MTTF.
Set internally.
The BC10 and BC20 are constructed from static sensitive components. ESD handling procedures must be observed.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
Powered by ICminer.com Electronic-Library Service CopyRight 2003
BC10/BC20
TYPICAL PERFORMANCE
PIN FUNCTION
I/O
SIGNAL
DESCRIPTION
PIN
I
I
O
O
O
I/O
I/O
I/O
I
I
I
I
I
I
I
I
I
I
O
O
O
HV
HVRTN
OUT1
OUT2
OUT3
S1
S2
S3
HS1
HS2
HS3
120
REV
GROUND
Vcc
REF IN
FB
TORQUE
MOTOR I
SSC
FAULT
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
tbd
I
I/O
OE
CT
I
2Q
Unregulated high current motor supply voltage
Return line for the high motor current
Half bridge output for driving motor coil
Half bridge output for driving motor coil
Half bridge output for driving motor coil
Source of the N-rail FET in half bridge 1
Source of the N-rail FET in half bridge 2
Source of the N-rail FET in half bridge 3
Commutation sensor input 1
Commutation sensor input 2
Commutation sensor input 3
Sets commutation logic for 120 0 phasing
Reverses direction when 2 quadrant PWM is used
Signal ground
Control circuit power
Velocity/speed input
Input for analog voltage proportional to velocity or speed
Input for an analog voltage proportional to motor current
Analog voltage proportional to motor current
HCMOS level pulse for each sensor state change.
HCMOS logic level output, a 0 indicates over temperature
or over current condition.
HCMOS 1 enables power FET operation
The PWM frequency may be lowered by installing a
capacitor between this output and ground.
A logic 1 on this input enables 2 quadrant PWM
BC10/BC20U REV. 1 MAY 1999
Powered by ICminer.com Electronic-Library Service CopyRight 2003
© 1999 Apex Microtechnology Corp.
tbd
tbd
tbd