ON LB11683H Three-phase sensorless motor driver Datasheet

Ordering number : ENA0954
LB11683H
Monolithic Digital IC
Three-Phase Sensorless Motor Driver
http://onsemi.com
Overview
The LB11683H is a three-phase full-wave current-linear-drive motor driver IC. It adopts a sensorless control system
without the use of a Hall effect device. For quieter operation, the LB11683H features a current soft switching circuit
and is optimal for driving the cooling fan motors used in refrigerators, etc.
Functions
• Current linear drive
• Built-in current limiter circuit
• Output stage oversaturation prevention circuit
• Coil counter-electromotive FG output
• Built-in thermal shutdown circuit
• Beat lock prevention circuit
• Lock protection circuit
• Lock detection output
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
VCC max
14.5
V
Output applied voltage
VO max
14.5
V
Input applied voltage
VI max
-0.3 to VCC+0.3
V
Output current
IO max
1.5
A
Allowable power dissipation
Pd max1
Independent IC
0.8
W
Pd max2
Mounted on a board *
1.85
W
Operating temperature
Topr
-30 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
* Specified board: 114.3mm ×76.1mm ×1.6mm, glass epoxy board.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
91907 MS PC B8-8741 No. A0954-1/7
LB11683H
Allowable Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Supply voltage 1
VCC
All operating circuits other than internal 5V Reg.
Supply voltage 2
VCC
All operating circuits.
Ratings
Unit
5.5 to 7.0
V
7.0 to 13.8
V
Electrical Characteristics at Ta = 25°C, VCC = 12V
Parameter
Symbol
Ratings
Conditions
min
Supply current
Unit
max
VC=VCC VFC=0V
10
15
mA
Output saturation voltage 1
VOSAT1
IO=0.4A, Source+Sink
1.4
2.0
V
Output saturation voltage 2
VOSAT2
IO=0.8A, Source+Sink, RF=0Ω
1.8
2.6
V
VCC-2
V
MCOM pin common-phase input
ICC
typ
VIC
0
voltage range
μA
PCOUT output current 1
IPCOU
Source side
PCOUT output current 2
IPCOD
Sink side
90
VCOIN input current
IVCOIN
VCOIN=5V
0.1
0.2
μA
330
400
500
Hz
14.8
18.5
22.3
kHz
VCO minimum frequency
fVCOMIN
VCOIN=open
CX=0.022μF
VCO maximum frequency
fVCOMAX
VCOIN=5V
CX=0.022μF
C1, C2 source current ratio
μA
1-(IC1SOURCE/IC2SOURCE)
-12
+12
%
RSINK
1-(IC1SINK/IC2SINK)
-12
+12
%
C1 source, sink current ratio
RC1
IC1SOURCE/IC1SINK
50
%
C2 source, sink current ratio
RC2
IC2SOURCE/IC2SINK
50
%
Counter-electromotive FG output
VOL
IFGO=1mA
CT pin charge current
ICT1
Source current
1.2
1.6
CT pin discharge current
ICT2
Sink current
50
77
Lock protection detection voltage
VRD1
2.3
2.45
2.6
Lock protection reset voltage
VRD2
1.13
1.26
1.39
V
10
μA
C1, C2 sink current ratio
RSOURCE
-90
0.4
ON voltage
RD pin leak current
RD pin output LO voltage
IRDLEAK
VRDL
IO=1mA
Current limiter setting voltage
Thermal shutdown operating
TTSD
Design target *
ΔTTSD
Design target *
temperature
Thermal shutdown hysteresis
V
μA
nA
V
100
400
mV
0.45
0.5
0.55
V
150
180
210
°C
15
°C
*: Design target value and no measurement is made.
No. A0954-2/7
LB11683H
Package Dimensions
unit : mm (typ)
3315
Pd max -- Ta
Allowable power dissipation, Pd max -- W
2.0
HEAT SPREADER
15.2
(6.2)
0.65
7.9
10.5
15
(4.9)
28
14
1
0.8
2.0
0.25
0.3
(2.25)
2.45 max
(0.8)
1.6
1.2
0.96
Independent IC
0.8
0.42
0.4
0
-20
0.1
2.7
Mounted on a specified board:
114.3×76.1×1.6mm3
glass epoxy board
0
20
40
60
80 85
100
Ambient temperature, Ta -- °C
SANYO : HSOP28HC(375mil)
Pin Assignment
UOUT 1
28 VOUT
NC 2
27 WOUT
RF 3
26 MCOM
NC 4
25 NC
NC 5
LB11683H
FC 6
24 NC
23 NC
BFGO 7
22 VCC
CT 8
21 UIN
RD 9
20 VIN
NC 10
19 WIN
NC 11
18 C1
GND 12
17 C2
GND 13
16 CX
PCOUT 14
15 VCOIN
Top view
No. A0954-3/7
0.1μF
0.022μF
0.47μF
560kΩ
0.022μF
0.022μF
50kΩ
FC
CX
VCOIN
PCOUT
C2
C1
BFGC
PLL
Startup control
circuit
Thermal shutdown
circuit
0.5V
VCO
Soft switching
driver circuit
200Ω
Beat lock prevention circuit
8 divider
Timing control
circuit
Mask circuit
Rotor detection circuit
Lock protection circuit
Upper side saturation prevention control
WOUT
VOUT
UOUT
MCOM
VCC
CT
RD
50kΩ
GND
RF
0.5Ω
0.01μF
0.1μF
LB11683H
Block Diagram
Output drive circuit
ILB01810
No. A0954-4/7
LB11683H
Pin Functions
Pin
No.
Symbol
1
UOUT
28
VOUT
27
WOUT
3
RF
Description
Pin Voltage
Equivalent Circuit
3-phase motor driver output
VCC
3.9kΩ
20μA
10kΩ
30kΩ
Minimum potential of 3-phase motor driver
output transistor.
1
27
28
3.9kΩ
Constant current control is made through
30kΩ
detection of this voltage. The current limiter
3
21
20
19
also functions by detecting this potential.
22
VCC
26
MCOM
Power supply
Motor coil neutral point input pin.
The coil voltage waveform is detected with
8 to 13.8V
VCC
1 28 27
UIN
Coil waveform detection comparator input pin.
This pin is connected to each phase output
through the internal 10kΩ resistor.
20
VIN
19
WIN
18
C1
21
20
19
200Ω
26
200Ω
2kΩ
21
10kΩ
reference to this voltage.
200Ω
Triangular wave generating capacitor
VCC
connection pin.
This triangular wave performs soft-switching of
15μA
18
17
15μA
the coil output waveforms.
VREG
5μA
1kΩ
17
C2
2S
16
CX
1/2VREG-VF
In the VCO circuit, the operation frequency
VREG
VCC
range and minimum operation frequency are
determined by means of the capacitor value
100μA
connected this pin and ground.
300Ω
16
15
VCOIN
VCO circuit voltage input pin.
VREG
The PCOUT pin voltage is input via CR filter.
VCC
10kΩ
50kΩ
1.75V
15
50μA
50μA
Continued on next page.
No. A0954-5/7
LB11683H
Continued from preceding page.
Pin
No.
14
Symbol
PCOUT
Description
Pin Voltage
Equivalent Circuit
VCO circuit PLL output
VCC
VREG
14
12
GND
Ground for all other than the output transistor
13
7
BFGO
Motor counter-electromotive voltage detection
VREG
FG output (single-phase only).
100μA
Open collector output
6
FC
7
Frequency characteristics compensation pin.
VREG
Insertion of a capacitor between this pin and
VCC
ground stops oscillation of the closed loop of
1kΩ
current control system.
9
RD
Lock detection output.
5kΩ
10kΩ
6
VREG
When motor is running: low-level
When motor is locked: high-level
15kΩ
9
Open collector output
8
CT
Lock protection ON/OFF time setting capacitor
VCC
connection pin.
The capacitor connected between this pin and
0.1μA
ground determines the driver ON/OFF time
VREG
15μA
1μA
8
when the motor is locked.
25kΩ
2S
No. A0954-6/7
LB11683H
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PS No. A0954-7/7
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