LV88551, LV88552,
LV88553, LV88554
Motor Driver, Single-Phase,
PWM, Full-Wave, BLDC
Motor
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Overview
The LV88551JA/R, LV88552JA/R, LV88553JA/R and
LV88554JA/R are the pre−driver for a single−phase BLDC motor,
which have the closed loop controller for motor rotation speed. These
are available to control a motor with low vibration and the low noise.
In addition, lead−angle adjustment is possible by external pins.
Lead−angle value and lead−angle slant can be adjusted independently.
Thus, the device can be driven by high efficiency and low noise with
various motors. Motor speed setting curve is adjustable with using
external resistor only. As a method of the rotary speed control of the
motor, direct−PWM pulse input.
MARKING
DIAGRAMS
ON
XXXXXXX
ALYWG
SSOP20J
CASE 565AP
(LV88551JA, LV88552JA, LV88553JA, LV88554JA)
Features
• Single−phase Full Wave Drive Pre−driver Include Closed Loop
•
•
•
•
•
•
•
•
•
•
Speed Control
Speed Control Function by PWM Duty Input (25 Hz to 100 kHz)
Soft Start−up Function and PWM Soft Switching Phase Transition
Soft PWM Duty Cycle Transitions
Built−in Current Limit Circuit and Thermal Protection Circuit
Built−in Locked Rotor Protection and Auto Recovery Circuit
Dynamic Lead Angle Adjustment with Respect to Rotational Speed
Lead−angle Control Parameters can be Configured
Lineup of Different Closed Loop Gain Selection
Lineup of Rotation Signal Output Selection
These are Pb−Free and Halogen−Free Devices
XXXXX
ALYW
VCT20
CASE 601AB
(LV88551R, LV88552R, LV88553R, LV88554R)
XX
A
L
YW
G
= Specific Device Code
= Assembly Site (OSPI Tarlac Site Code: MP)
= Wafer Lot Number
= Assembly Start Week
= Pb−Free Package
ORDERING INFORMATION
Device
Package
Shipping†
• PC & Computing Equipment
• Refrigerator
• Games
LV88551JA−AH
LV88552JA−AH
LV88553JA−AH
LV88554JA−AH
SSOP20J
(Pb−Free /
Halogen Free)
2000 /
Tape & Reel
LV88551, 552, 553, 554 COMPARISON TABLE
LV88551RTXG
LV88552RTXG
LV88553RTXG
LV88554RTXG
VCT20
(Pb−Free /
Halogen Free)
2000 /
Tape & Reel
Typical Applications
Loop Gain
Rotation Signal
LV88551JA/R
Normal
FG
LV88552JA/R
Normal
RD
LV88553JA/R
Low
FG
LV88554JA/R
Low
RD
© Semiconductor Components Industries, LLC, 2016
December, 2018 − Rev. 4
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
1
Publication Order Number:
LV88551/D
LV88551, LV88552, LV88553, LV88554
BLOCK DIAGRAM
20 O2H
O1L 1
Pre Driver
O1H 2
19 O2L
Current
Limiter
Level Shift
VCC 3
REG 4
5V
Regulator
OSC
17 GND
VDD 5
Duty
counter
PIX 6
RSA 8
A−D
converter
A−D
converter
14 LAG
13 SFS
RSB 9
FG 10
16 PWM
15 LAI
Drive
Control
Logic
PIZ 7
18 RF
12 IN2
Lock Detection
TSD
Figure 1. LV88551JA, LV88552JA, LV88553JA, LV88554JA Block Diagram
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2
11 IN1
LV88551, LV88552, LV88553, LV88554
APPLICATION CIRCUIT DIAGRAM
Power supply
R18
MP1
R14
MN1
R15
R20
C6
C4
MP2
R16
M
MN2
C5
R17
C7
R21
R19
R0
Power
supply
1
O1L
O2H
20
2
O1H
O2L
19
3
VCC
RF
18
4
REG
GND
17
5
VDD
PWM
16
6
PIX
LAI
15
7
PIZ
LAG
14
8
RSA
SFS
13
9
RSB
IN2
12
10
FG
IN1
11
C0
C1
R1
R4
R2
R5
R3
R6
R13
C3
Control signal
input (Pulse)
R10
R11
R12
R7
Rotational signal
output
R8
C8
H
R9
Figure 2. Single−phase BLDC Motor Drive with LV88551JA, LV88552JA, LV88553JA, LV88554JA
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3
LV88551, LV88552, LV88553, LV88554
Table 1. EXAMPLE COMPONENT VALUE
Device
Value
Device
Value
MP1+MN1
FW4604
R14
100 W
MP2+MN2
FW4604
R15
100 W
R16
100 W
R0
0.051 W // 0.051 W
R17
100 W
R1
0 to 50 kW
R18
*
R2
0 to 50 kW
R19
*
R3
0 to 50 kW
R20
*
R4
0 to 50 kW
R21
*
R5
0 to 50 kW
R6
0 to 50 kW
C0
4.7 mF −10 mF
R7
0 to 50 kW
C1
0.1 mF − 1 mF
R8
0 to 50 kW
C3
**
R9
2.2 kW
C4
0 to 1500 pF
R10
0 to 50 kW
C5
0 to 1500 pF
R11
0 to 50 kW
C6
0 to 1500 pF
R12
0 to 50 kW
C7
0 to 1500 pF
R13
0W
C8
0 to 0.1 mF
*Depend on the user circuit, MP1, MP2, MN1 and MN2.
**Depend on the user environment.
Table 2. TRUTH TABLE
Operating state
Rotation − drive mode
Rotation – regeneration mode
Lock protector
IN1
IN2
Inner−PWM State*
O1H
O1L
O2H
O2L
FG
L
H
On
H
H
L
L
OFF
H
L
L
L
H
H
L
L
H
H
H
H
H
OFF
H
L
H
H
H
H
L
L
H
H
L
H
L
OFF
H
L
H
L
H
L
L
Off
−
*Inner PWM state means the OUTPUT active period decided by inner control logic. Don’t match with PWM−pin input signal.
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4
LV88551, LV88552, LV88553, LV88554
PIN ASSIGNMENT
SSOP20J (225 mil)
O1L
1
20 O2H
O1H
2
19 O2L
VCC
3
18 RF
REG
4
17 GND
VDD
5
PIX
6
15 LAI
PIZ
7
14 LAG
RSA
8
13 SFS
RSB
9
12 IN2
FG
10
11
16 PWM
(Top View)
IN1
Figure 3. LV88551JA, LV88552JA, LV88553JA, LV88554JA Pin Assignment
VCT20 3x3
O1H
O1L
O2H
O2L
RF
20
19
18
17
16
VCC
1
15
GND
REG
2
14
PWM
VDD
3
13
LAI
PIX
4
12
LAG
PIZ
5
11
SFS
(Top View)
6
RSA
7
RSB
8
9
FG
IN1
10
IN2
Figure 4. LV88551R, LV88552R, LV88553R, LV88554R Pin Assignment
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5
LV88551, LV88552, LV88553, LV88554
Table 3. PIN FUNCTION DESCRIPTION (Pin No. – SSOP20J Version)
Pin No.
Pin name
Function
1
19
O1L
O2L
Output pins of the low−side gate−drive signal.
(See “Truth table” on page 4 for the polarity)
2
20
O1H
O2H
Output pins of the high−side gate−drive signal.
(See “Truth table” on page 4 for the polarity)
3
VCC
Power supply pin.
The input voltage to this pin must be stabilized without the influence of the noise, ripple, and etc.
Therefore, it is necessary to connect the capacitor near VCC pin and GND pin as much as possible. It
must be over 1 mF about the value of this capacitor. Not to detach it.
4
REG
Output pin of the regulated voltage (5.0 V).
It is necessary to connect the capacitor near this pin and GND pin for stabilizing this regulated voltage.
5
VDD
Logic circuit power supply pin.
This pin should be shorted to REG pin.
6
7
PIX
PIZ
PWM input duty adjust pins at the point of maximum or minimum rotation speed.
8
9
RSA
RSB
Maximum or minimum rotation speed adjust pins.
10
FG
Output pin of the rotational signal.
For LV88551 and LV88553, it functions as FG (Frequency Generator) and for LV88552 and LV88554, it
functions as RD (Rotation Detection). This pin should be opened (disconnected) when not in use.
11
12
IN1
IN2
Hall signal input pins.
13
SFS
Soft start adjust pin.
14
LAG
Lead angle gradient adjust pin.
15
LAI
Initial lead angle adjust pin in minimum rotation speed.
16
PWM
PWM input pin of the speed control signal as the rectangular wave.
17
GND
GND pin.
18
RF
Output current detect pin.
When the voltage level at this pin exceeds the internal set detection level, outputs turn to the regenerating mode.
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LV88551, LV88552, LV88553, LV88554
Table 4. MAXIMUM RATINGS
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
Parameter
VCCmax
VCC pin
20
V
Maximum output voltage
VOUTmax
O1H/O1L/
O2H/O2L pin
20
V
Maximum output current
IOUTmax
O1H/O1L/
O2H/O2L pin
50
mA
Maximum output peak current (Note 1)
IOUTpeak
O1H/O1L/
O2H/O2L pin
150
mA
REG pin maximum output current
IREGmax
REG pin
20
mA
RSA/RSB/PIX/PIZ/LAI/LAG/SFS/IN1/IN2/RF pin maximum input
voltage
VIN max
RSA/RSB/PIX/PIZ/
LAI/LAG/IN1/IN2/
SFS/RF pin
5.5
V
VPWMmax
PWM pin
5.5
V
FG pin withstanding voltage
VFGmax
FG pin
20
V
FG pin maximum output current
IFGmax
FG pin
10
mA
Allowable power dissipation (Note 2)
Pdmax
LV8855xJA
0.8
W
Allowable power dissipation (Note 3)
Pdmax
LV8855xR
1.0
W
Topr
−40 to +105
°C
Tstg
−55 to +150
°C
Tjmax
150
°C
PWM pin maximum input voltage
Operating temperature
Storage temperature
Maximum junction temperature
Moisture Sensitivity Level (MSL) (Note 4)
MSL
LV8855xJA
3
−
Moisture Sensitivity Level (MSL) (Note 4)
MSL
LV8855xR
1
−
Lead Temperature Soldering Pb−Free Versions (30s or less)
(Note 5)
TSLD
255
°C
±2000
V
ESD Human body Model: HBM (Note 6)
ESDHBM
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. IOUTpeak is the peak value of the motor supply current with duty_cycle < 5%.
2. Specified circuit board : 114.3 mm x 76.1 mm x 1.6 mm, glass epoxy single layer board. It has 1 oz internal power and ground planes and
1/2 oz copper traces. Please refer to Thermal Test Conditions on page 23.
3. Specified circuit board : 50.0 mm x 40.0 mm x 0.8 mm, glass epoxy 4−layer board. It has 1 oz internal power and ground planes and 1/2 oz
copper traces on top and bottom of the board. Please refer to Thermal Test Conditions on page 23.
4. Moisture Sensitivity Level (MSL): IPC/JEDEC standard: J−STD−020A.
5. For information, please refer to our Soldering and Mounting Techniques Reference Manual, SOLDERRM/D
http://www.onsemi.com/pub_link/Collateral/SOLDERRM−D.PDF.
6. ESD Human Body Model is based on JEDEC standard: JESD22−A114.
Table 5. THERMAL CHARACTERISTICS
Parameter
Symbol
Value
Unit
Thermal Resistance, Junction−to−Ambient (Note 7) LV8855xJA
RqJA
156
°C/W
Thermal Resistance, Junction−to−Ambient (Note 8) LV8855xR
RqJA
125
°C/W
7. Specified circuit board : 114.3 mm x 76.1 mm x 1.6 mm, glass epoxy single layer board. It has 1 oz internal power and ground planes and
1/2 oz copper traces . Please refer to Thermal Test Conditions on page 23.
8. Specified circuit board : 50.0 mm x 40.0 mm x 0.8 mm, glass epoxy 4−layer board. It has 1 oz internal power and ground planes and 1/2 oz
copper traces on top and bottom of the board. Please refer to Thermal Test Conditions on page 23.
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LV88551, LV88552, LV88553, LV88554
LV8855xJA
0.8
0.6
0.4
0.29
0.2
−40
10
60
Allowable dissipation Pdmax(W)
Allowable dissipation Pdmax(W)
Board Mounted (114.3 mm x 76.1 mm x 1.6 mm) glass epoxy
0.0
LV8855xR
1.2
1.0
Board Mounted (50.0 mm x 40.0 mm x 0.8 mm) glass epoxy
1.0
0.8
0.6
0.2
0.0
110
0.36
0.4
−40
TA, TEMPERATURE (°C)
10
60
110
TA, TEMPERATURE (°C)
Figure 5. Power Dissipation vs Ambient Temperature Characteristic
Table 6. RECOMMENDED OPERATING RANGES (Note 9)
Parameter
Symbol
Conditions
Ratings
Unit
VCC supply voltage
VCCtyp
VCC pin
12
V
VCC operating supply voltage range1
VCCop1
VCC pin
6.0 to 16
V
VCC operating supply voltage range2 (Note 10)
VCCop2
VCC pin
3.9 to 6.0
V
Fpwm
PWM pin
25 to 100k
Hz
PWM input frequency range
PWM minimum input low/high pulse width
Twpwm
PWM pin
100
ns
IN1 input voltage range
Vin1
IN1 pin
0 to VREG
V
IN2 input voltage range
Vin2
IN2 pin
0.3 to 0.55*VREG
V
Control input voltage range
Vcnth
RSA/RSB/PIX/
PIZ/LAI/LAG/SFS pin
0 to VREG
V
9. Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses
beyond the Recommended Operating Ranges limits may affect device reliability.
10. When the VCC voltage below 6.0 V, motor rotation function keep to normally until to 3.9 V. But there are possibility that the ELECTRICAL
CHARACTERISTICS is varied.
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LV88551, LV88552, LV88553, LV88554
Table 7. ELECTRICAL CHARACTERISTICS at TA = 25°C, VCCOP = 12 V unless otherwise noted. (Note 11)
Ratings
Symbol
Parameter
Circuit current
Conditions
Min
ICC
Typ
Max
Unit
9
16
mA
O1H/O1L/O2H/O2L High−side on−resistance
ROHon
IO = 10 mA
30
80
W
O1H/O1L/O2H/O2L Low−side on−resistance
ROLon
IO = 10 mA
30
80
W
O1H/O1L/O2H/O2L PWM output frequency
fpwmo
45.6
48
50.4
kHz
PWM pin low level input voltage
Vpwml
0
0.7
V
PWM pin high level input voltage
Vpwmh
2.8
PWM input resolution
Dpwm
FG pin low level output voltage
Vfgl
IFG = 5 mA
FG pin leak current
Ifglk
VCC = 16 V
VFG = 16 V
REG pin output voltage
VREG
Lock−detection time1 (Note 12)
Lock−detection time2 (Note 13)
Lock−Stop release time1 from
1st
to
4th
off time
Lock−Restart on time
Lock−Restart time ratio1
Lock−Stop release time2(Note 14) as from
off time
mA
4.7
5.0
5.3
V
0.33
S
Tld2
Start−up
0.63
0.7
0.77
S
Tlroff1
3.1
3.5
3.9
S
Tlron
0.63
0.7
0.77
S
Tlroff1/Tlron
Tlroff2
5
12.5
Thermal protection detection temperature
Tthp
(Design target)
DTthp
(Design target)
Current limit detection voltage
VTHCLM
RF−GND
REG pin output voltage load regulation
DVregld
Ihin
Control input bias current
1
0.3
Tlroff2/Tlron
Hall input sensitivity
V
0.27
Rlr2
Hall input bias current
0.3
Under rotation
Lock−Restart time ratio2(Note 14) as from 5th off time
Thermal protection detection hysteresis
0.2
V
Bit
Tld1
Rlr1
5th
5.5
8
150
14
−
15.5
S
20
−
180
°C
40
°C
0.10
0.11
V
IREG = −10 mA
20
50
mV
IN1, IN2 = 0 V
0
1
mA
0.09
40
DVhin
Ictlin
PIX, PIZ, RSA,
RSB, SFS, LAG,
LAI = 0 V
PWM input bias current
Ipwmin
VDD = 5.5 V,
PWM = 0 V
UVLO detection voltage
Vuvdet
UVLO release voltage
Vuvrls
UVLO hysteresis voltage
DVuv
mV
0
1
mA
14
28
42
mA
VCC voltage
3.1
3.4
3.6
V
VCC voltage
3.3
3.6
3.9
V
0.1
0.2
0.4
V
11. Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
12. When the motor rotate state and the motor rotation speed reach to below 50 rpm (phase change period over 0.3s), lock protection function
will activate.
13. At the motor start−up timing, the motor can’t rotate until 0.7s, lock protection function work.
14. When the locked rotor state is continued for a long time, lock stop period will change from 5th off time.
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LV88551, LV88552, LV88553, LV88554
TYPICAL CHARACTERISTICS
Figure 6. Typical Characteristics
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LV88551, LV88552, LV88553, LV88554
EQUIVALENT CIRCUIT
VCC
VCC
REG
( VCC-5V )
O1L
O1H
VDD
O2L
O2H
GND
Figure 8. REG Equivalent Circuit
GND
Figure 7. O1L, O1H, O2L and O2H
Equivalent Circuit
VDD
VCC
GND
GND
Figure 9. VCC Equivalent Circuit
Figure 10. VDD Equivalent Circuit
VDD
IN1
SFS
LAG
GND
GND
Figure 11. IN1, IN2 Equivalent Circuit
Figure 12. SFS, LAG Equivalent
Circuit
PIX
GND
GND
Figure 13. LAI Equivalent Circuit
Figure 14. PIX, PIZ Equivalent Circuit
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LV88551, LV88552, LV88553, LV88554
VCC
RSA
FG
GND
Figure 15. RSA, RSB Equivalent
Circuit
Figure 16. FG Equivalent Circuit
VDD
VDD
RF
PWM
GND
GND
Figure 18. RF Equivalent Circuit
Figure 17. PWM Equivalent Circuit
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LV88551, LV88552, LV88553, LV88554
STATE DIAGRAM
Figure 19. State Diagram
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13
LV88551, LV88552, LV88553, LV88554
FUNCTIONAL DESCRIPTION
Loop Gain
Command Input (PWM)
Motor speed loop gain of LV88553 and LV88554 is lower
than that of LV88551 and LV88552. If the motor coil current
generate large overshoot during motor speed transition,
LV88553 and LV88554 can reduce the overshooting current
but the motor rotation response speed will decrease.
LV88551 and LV88552 are recommended if faster response
speed is required.
This pin reads the duty cycle of the PWM pulse and
controls rotational speed. The PWM input signal level is
supported from 2.5 V to 5 V. The combination with the
rotational speed control by DC voltage is impossible.
When the pin is not used, it must be connected to ground.
The minimum pulse width is 100 ns.
Current Sense Resistor Pin (RF)
Since Power FET side ground line has to tolerate surge of
current, separate it from the GND pin as far away as possible
and connect it point−to−point to the ground side of the
capacitor (C0) between VCC and GND.
LV8855xJA/R provides the dynamic lead angle
adjustment. To match the motor characteristics, set two
point lead−angel, low speed side (set by LAI pin) and high
speed side(set by LAG pin).
At middle range of input duty, the lead−angle is applied to
calculated value for relative relationship.
The DC voltage levels applied to these pins are converted
to the lead angle parameter. The voltages are fetched right
after the power−on−reset. Because the internal conversion
circuit works inside REG power rail, it is recommended that
the LAI and LAG voltages are made from VREG.
Internal 5.0V Voltage Regulator Pin (REG, VDD)
Rotation Speed Setting Pin (RSA, RSB)
REG is internal 5.0 V voltage regulator.
VDD is power supply for internal logic, oscillator, and
protection circuits. Please connect REG and VDD.
When PIX, PIZ, RSA, RSB, LAI, LAG and SFS are used,
it is recommended that application circuits are made using
this output. The maximum load current of REG is 20 mA.
Don’t exceed this value. Place capacity from 0.1 mF to
1.0 mF in the close this pin.
LV8855xJA/R provides the feedback speed control, so
this device can set the rotation speed value (RPM) directly.
To make the motor speed setting curve, set two point
rotation speed value, high speed side and low speed side.
The DC voltage levels applied to these pins are converted
to the rotation speed parameter. The voltages are fetched
right after the power−on−reset. Because the internal
conversion circuit works inside REG power rail, it is
recommended that the RSA and RSB voltages are made
from VREG.
Lead−Angle Setting Pin (LAI, LAG)
RF is current sense input terminal.
Voltage across the sense resistor represents the motor
current and is compared against the internal VTHOVC (0.10
Vtyp.) for setting the over−current limiter (CLM).
VCC and GND Pin (VCC, GND)
Rotational Signal Pin (FG)
This is an open drain output pin which outputs the
rotational signal. In case of LV88551 and LV88553, FG
signal will come out from this pin and its frequency will
represent electrical speed of a motor.
In case of LV88552 and LV88554, RD signal will come
out from this pin. See page 21 ”Lock detection and Lock
protection” for more information about the RD signal.
Recommended pull up resistor value is 1 kW to 100 kW.
Leave the pin open when not in use.
Rotation Speed Curve Duty Setting Pin (PIX, PIZ)
To make the motor speed setting curve, set two point input
duty parameter, high speed side and low speed side.
The DC voltage levels applied to these pins are converted
to the input duty parameter. The voltages are fetched right
after the power−on−reset. Because the internal conversion
circuit works inside REG power rail, it is recommended that
the PIX and PIZ voltages are made from VREG.
Soft−Start and Dead Time Setting Pin (SFS)
Output Pins for External FET Control (O1H, O1L, O2H,
O2L)
LV8855xJA/R provides synchronous rectification drive
for high efficiency drive. External FET size is variable
caused by the motor application. So this driver IC is able to
choose 2 types of dead time.
Soft start function pattern is able to choose from 16 types.
The DC voltage levels applied to these pins are converted
to the soft−start setting and dead time parameter. The voltage
is fetched right after the power−on−reset. Because the
internal conversion circuit works inside REG power rail, it
is recommended that the SFS voltage is made from VREG.
These pins are output for external MOSFET. O1H and
O2H connect to upper side P−ch FET’s gate−line. O1L and
O2L connect to lower side N−ch FET’s gate line.
Hall−Sensor Input Pins (IN1, IN2)
Differential output signals of the hall sensor are to be
interfaced at IN1 and IN2. It is recommended that 0.01 mF
capacitor is connected between both pins to filter system
noise.
When a Hall IC is used, the output of the Hall IC must be
connected to the pin IN1. And, the pin IN2 must be kept in
the middle level of the Hall IC power supply voltage.
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LV88551, LV88552, LV88553, LV88554
DETAILED DESCRIPTION
When the input duty is lower than LSP setting duty, the
LV8855xJA/R can select “motor stop” or “keep LSP
rotation speed”.
When the input duty is higher than HSP setting duty, the
LV8855xJA/R can select “free run” or “keep HSP rotation
speed”.
Rotation speed of LSP and HSP is set by RSA and RSB
pin. The case of RSA > RSB, “motor stop” mode applied.
The case of RSA < RSB, “keep LSP rotation speed” mode
applied.
Input duty of LSP and HSP is set by PIX and PIZ pin. The
case of PIX > PIZ, “free run” mode applied. The case of PIX
< PIZ, “keep HSP rotation speed” mode applied.
So LV8855xJA/R can’t set decease speed curve at input
duty increase.
Figures 21 − 24 show setting curve example.
As for all numerical value used in this description, the
design value or the typical value is used.
Rotation Speed Curve Setting Description
The LV8855xJA/R can set 2 points speed parameter
arbitrarily.
Low speed point (LSP)
High speed point (HSP)
At middle range of input duty, the rotation speed is applied
to calculated value for relative relationship.
HSP
LSP
Figure 20. Image of Speed Setting Curve
HSP
Target speed
adjust by RSB pin
Target speed
adjust by RSA pin
LSP
Duty adjust
by PIX pin
Duty adjust
by PIZ pin
Figure 21. Speed Setting Curve Type Example 1
Minimum Speed Set and Maximum Speed Set
www.onsemi.com
15
LV88551, LV88552, LV88553, LV88554
HSP
Target speed
adjust by RSA pin
Target speed
adjust by RSB pin
LSP
Duty adjust
by PIX pin
Duty adjust
by PIZ pin
Figure 22. Speed Setting Curve Type Example 2
Motor Stop Mode and Maximum Speed Set
HSP
Target speed
adjust by RSA pin
Target speed
adjust by RSB pin
LSP
Duty adjust
by PIZ pin
Duty adjust
by PIX pin
Figure 23. Speed Setting Curve Type Example 3
Motor Stop Mode and Free Run Mode
HSP
Target speed
adjust by RSB pin
Target speed
adjust by RSA pin
LSP
Duty adjust
by PIX pin
Duty adjust
by PIZ pin
Figure 24. Speed Setting Curve Type Example 4
Minimum Speed Set and Free Run Mode
www.onsemi.com
16
LV88551, LV88552, LV88553, LV88554
Table 8. ROTATION SPEED SETTING TABLE FOR RSA/RSB PIN
A−D code
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
RPM
0
0
0
0
0
0
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
550
560
570
580
590
600
610
620
630
640
650
660
670
680
690
700
710
720
730
740
750
760
770
780
790
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
A−D code
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
RPM
980
990
1000
1010
1020
1030
1040
1050
1060
1080
1100
1120
1140
1160
1180
1200
1220
1240
1260
1280
1300
1320
1340
1360
1380
1400
1420
1440
1460
1480
1500
1520
1540
1560
1580
1600
1620
1640
1660
1680
1700
1720
1740
1760
1780
1800
1820
1840
1860
1880
1900
1920
1940
1960
1980
2000
2020
2040
2060
2080
2100
2120
2140
2160
A−D code
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
RPM
2180
2200
2220
2240
2260
2280
2300
2320
2340
2360
2380
2400
2420
2440
2460
2480
2500
2520
2540
2560
2600
2650
2700
2750
2800
2850
2900
2950
3000
3050
3100
3150
3200
3250
3300
3350
3400
3450
3500
3550
3600
3650
3700
3750
3800
3850
3900
3950
4000
4050
4100
4150
4200
4250
4300
4350
4400
4450
4500
4550
4600
4650
4700
4750
A−D code
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
RPM
4800
4850
4900
4950
5000
5050
5100
5150
5200
5300
5400
5500
5600
5700
5800
5900
6000
6100
6200
6300
6400
6500
6600
6700
6800
6900
7000
7100
7200
7300
7400
7500
7600
7700
7800
7900
8000
8100
8200
8300
8400
8500
8600
8700
8800
8900
9000
9100
9200
9300
9400
9500
9600
9700
9800
9900
10000
10100
10200
10300
10400
10500
10600
10700
A−D code
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
RPM
10800
10900
11000
11100
11200
11300
11400
11500
11600
11700
11800
11900
12000
12100
12200
12300
12400
12500
12600
12700
12800
12900
13000
13100
13200
13300
13400
13500
13600
13700
13800
13900
14000
14100
14200
14300
14400
14500
14600
14700
14800
14900
15000
15100
15200
15300
15400
15500
15600
15700
15800
15900
16000
16100
16200
16300
16400
16500
16600
16700
16800
16900
17000
17100
www.onsemi.com
17
A−D code
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
RPM
17200
17300
17400
17500
17600
17700
17800
17900
18000
18100
18200
18300
18400
18500
18600
18700
18800
18900
19000
19100
19200
19300
19400
19500
19600
19700
19800
19900
20000
20100
20200
20300
20400
20500
20600
20700
20800
20900
21000
21100
21200
21300
21400
21500
21600
21700
21800
21900
22000
22100
22200
22300
22400
22500
22600
22700
22800
22900
23000
23100
23200
23300
23400
23500
A−D code
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
RPM
23600
23700
23800
23900
24000
24100
24200
24300
24400
24500
24600
24700
24800
24900
25000
25100
25200
25300
25400
25500
25600
25700
25800
25900
26000
26100
26200
26300
26400
26500
26600
26700
26800
26900
27000
27100
27200
27300
27400
27500
27600
27700
27800
27900
28000
28100
28200
28300
28400
28500
28600
28700
28800
28900
29000
29100
29200
29300
29400
29500
29600
29700
29800
29900
A−D code
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
RPM
30000
30100
30200
30300
30400
30500
30600
30700
30800
30900
31000
31100
31200
31300
31400
31500
31600
31700
31800
31900
32000
32100
32200
32300
32400
32500
32600
32700
32800
32900
33000
33100
33200
33300
33400
33500
33600
33700
33800
33900
34000
34100
34200
34300
34400
34500
34600
34700
34800
34900
35000
35100
35200
35300
35400
35500
35600
35700
35800
35900
36000
36000
36000
36000
LV88551, LV88552, LV88553, LV88554
Figure 25. A−D Code Figure for RSA/RSB Pin
Voltage of RSA/RSB is calculated by below formula.
VRSA, VRSB[V] +
VREG
512
Target RPMȀs A_D code
(eq. 1)
Figure 26. Input Duty Parameter Setting for PIX/PIZ Pin
Voltage of PIX/PIZ is calculated by below formula.
VPIX, VPIZ[V] + VREG
Lead−Angle Setting Description
Target Duty[%]
100
(eq. 2)
HSP’s value is set by LAG pin. At middle range of input
duty, the lead−angle is applied to calculated value for
relative relationship.
LV8855xJA/R can set delay angle setting. Minus value
means delay angle.
LV8855xJA/R provides the dynamic lead angle
adjustment. To match the motor characteristics, set two
points lead−angel amounts. Settable range is −22.225° to
+22.225° (0.175° step). LSP’s value is set by LAI pin and
Figure 27. Lead−Angle Parameter Setting for LAI/LAG Pin
Voltage of LAI/LAG is calculated by below formula.
VLAI, VLAG[V] +
VREG
) VREG
2
Target Lead Angle Value [° ]
www.onsemi.com
18
44.45
(eq. 3)
LV88551, LV88552, LV88553, LV88554
Lead angle amounts of LSP and HSP doesn’t care each relationship of large/small.
HSP
LSP
Figure 28. Image of Lead Angle Setting Curve
Figure 29. Lead Angel Image Waveform
Soft Start Setting Description
When reached to the condition, change to closed− loop
speed control mode.
If the motor can’t rotation during 0.7s (typ) , lock
protection function will activate.
The recommendation of soft−start time is 1.72 s. Hence,
it can be set by A−D code “0” and “31” for easy
implementation by pin pull−down or pull−up.
LV8855xJA/R has soft start function.
To avoid the motor rush current, the output PWM duty
rise−up from zero slowly at the starting of motor rotation.
The soft start action release conditions are below;
Rotation speed reach to target speed decided by PWM
input.
Output duty reach to “Release duty”.
www.onsemi.com
19
LV88551, LV88552, LV88553, LV88554
A−D code
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Soft−start time(s)
Release duty(%)
1.72
0.03
0.86
2.58
3.44
5.16
8.6
17.2
10
5
3
2
1.5
1
0.5
0.02
0.02
0.5
1
1.5
2
3
5
10
17.2
8.6
5.16
3.44
2.58
0.86
0.03
1.72
86
86
86
86
86
86
86
86
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
86
86
86
86
86
86
86
86
Dead time(us)
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Figure 30. Soft−start and Dead Time Setting Table for SFS Pin
Figure 31. A−D code Figure for SFS Pin
Voltage of SFS is calculated by below formula.
VREG
32
Target SettingȀs A_D Code (eq. 4)
DUTY
VSFS[V] +
Output Waveform
LV8855xJA/R output PWM frequency is fixed by the
inner oscillator parameter, 48 kHz (typ) which doesn’t
depend on input PWM frequency.
Driving method of LV8855xJA/R uses PWM soft
switching drive with synchronous rectification.
Soft switching width is changed by input PWM duty.
When the input duty is HSP setting duty, soft switching
width is narrow (S/L = 20.5%)
On the other hand when the input duty is LSP setting duty,
soft switching width becomes wide (S/L = 46.9%)
TIME
Figure 32. Image of Soft Switching Width
In this part, the rise/fall time of soft switching waveform
is equal. Therefore, the “S” in the figure can be applied to fall
time as well.
www.onsemi.com
20
LV88551, LV88552, LV88553, LV88554
Current Limiter (CLM)
At the middle range input duty, the soft switching width
is applied to calculated value for relative relationship.
When the coil current increases and the voltage of the RF
pin rises to 0.1 V (typ), the CLM operates and shut the coil
current.
CLM current is adjustable by resistor value between
RF−GND.
The sense resistor value is calculated as follows.
Protections
LV8855xJA/R has some protection function.
− Thermal shutdown protection (TSD)
− Under voltage lock out (UVLO)
− Current limiter (CLM)
− Lock protection
When TSD or Lock protection is working, external FETs
are all turned off.
On the other hand, when UVLO or CLM is working,
output is turned off and goes into re−circulation state.
Sense Resistor[W] +
VTH CLM[V]
I CLM[A]
(eq. 5)
For example, to set the CLM current threshold at 2 A, the
sense resistor value is
Sense Resistor +
0.10(typ)
2.0
Res + 0.05 [W]
Thermal Shutdown Protection (TSD)
When this IC’s junction temperature rises to 180°C (typ),
O1H/O2H output turns to high, and O1L/O2L output turn to
low. External FETs are all turns off and coil current is shut
off.
Next, when IC’s junction temperature falls to 140°C (typ),
thermal shutdown function is released and motor starts to
rotate.
(eq. 6)
Lock Detection and Lock Protection
When the motor lock is happened, heat is generated
because IC continues to supply electricity to the motor. And
IC detects this radiated heat and turns off the electricity to the
motor.
If IC does not receive the FG edge for 0.3sec (under
50rpm), the IC judges ”motor lock” has occurred and the
lock protection function will activate. In this mode, the RD
signal goes to ”High”, though it is ”Low” at motor starts.
When the motor restarts and IC detects 4 phase changes,
the RD signal goes to ”Low”.
Under Voltage Lock Out (UVLO)
UVLO work voltage: VCC 3.4 V (typ)
UVLO release voltage: VCC 3.6 V (typ)
Motor Re−rotation
Motor Lock
IN1-IN2
OUT1
OUT2
FG
3.5sec
Motor Lock
Protection
0.3sec(typ)
Stand-by for FG-pulse
Soft-Start
Re − Start
Figure 33. Image of Lock Detection and Lock Protection
After 5th protection time, the lock protection time
becomes 14s and protection−start time ratio is approx. 1:20
(after 5th protection time).
When the motor rotation is stopped by PWM input signal,
the lock detection is reset and the motor starts to rotate
smoothly once the IC receives the rotation start instruction.
It takes 3.5 s for lock protection time (1st to 4th protection
time). This equals to the total of lock detection time and lock
protection time.
The lock detection time − the ratio is approx. 1:5 (from 1st
to 4th protection time).
www.onsemi.com
21
LV88551, LV88552, LV88553, LV88554
Motor Lock
0.7sec(typ)
(Stand−by
for FG−pulse)
OUT1
OUT2
FG
14sec(typ)
3.5sec(typ)
(Motor
1st to 4th
(Motor
Lock Protection)
protection time Lock Protection)
Figure 34. Image of Lock Protection Time
www.onsemi.com
22
After 5th
protection time
LV88551, LV88552, LV88553, LV88554
PCB GUIDELINES
VCC and Ground Routing
alternative use. When the battery line is extended,
(20−30 cm to 2−3 m), the battery voltage may overshoot
when the power is supplied due to the impact of the routing
of the inductance. Make sure that the voltage does not
exceed the absolute maximum standard voltage when the
power supply turns on.
These capacitance values are just for reference, so the
confirmation with the actual application is essential to
determine the values appropriately.
Make sure to short−circuit power line externally by a low
impedance route on one side of PCB. As high current flows
into external FET to GND, connect it to GND through a low
impedance route.
The capacitance connected between the VCC pin and the
opposite ground is to stabilize the battery. Make sure to
connect an electrolytic capacitor with capacitance value of
about 10 mF (4.7 mF or greater) to eliminate low frequency
noise. Also, to eliminate high frequency noise, connect a
capacitor of superior frequency characteristics, with
capacitance value of about 0.1 mF and make sure that the
capacitor is connected as close to the pin as possible. Allow
enough room in the design so the impact of PWM drive and
flyback do not affect other components. Especially, when
the coil inductance is large and/or the coil resistance is small,
current ripple will rise so it is necessary to use a
high−capacity capacitor with superior frequency
characteristics. Please note that if the battery voltage rises
due to the impact of the coil flyback as a result of the use of
diode for preventing the break down caused by reverse
connection, it is necessary to either increase the capacitance
value or place Zener diode between the battery and the
ground so that the voltage does not exceed its absolute
maximum voltage.
When the electrolytic capacitor cannot be used, add the
resistor with the value of about 1 W and a ceramic capacitor
with the capacitor value of about 10 mF in series for the
RF Routing
Power current (output current) flows through the RF line.
Make sure to short−circuit the line from RF through GND as
well as GND. The RF resistance must choose enough power
rating.
External FET Output Pins
Since the pins have to tolerate surge of current, make sure
that the wires are thick and short enough when designing the
PCB board.
Thermal Test Conditions
LV8855xJA (x = 1,2,3 or 4)
Size: 114.3 mm x 76.1 mm x 1.6 mm
Material: Glass epoxy single layer board
LV8855xR (x = 1,2,3 or 4)
Size: 50.0 mm x 40.0 mm x 0.8 mm
Material: Glass epoxy 4−layer board
www.onsemi.com
23
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
SSOP20J (225mil)
CASE 565AP
ISSUE A
SOLDERING FOOTPRINT*
GENERIC
MARKING DIAGRAM*
5.80
1.0
(Unit: mm)
0.32
0.50
NOTE: The measurements are not to guarantee but for reference only.
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
DOCUMENT NUMBER:
DESCRIPTION:
DATE 23 OCT 2013
98AON66067E
SSOP20J (225MIL)
XXXXXXXXXX
YMDDD
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
*This information is generic. Please refer to
device data sheet for actual part marking.
Pb−Free indicator, “G” or microdot “ G”,
may or may not be present.
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
PAGE 1 OF 1
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Email Requests to: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
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TECHNICAL SUPPORT
North American Technical Support:
Voice Mail: 1 800−282−9855 Toll Free USA/Canada
Phone: 011 421 33 790 2910
www.onsemi.com
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Europe, Middle East and Africa Technical Support:
Phone: 00421 33 790 2910
For additional information, please contact your local Sales Representative
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