LB11696V [ONSEMI]

Direct PWM Drive Brushless Motor Predriver IC;
LB11696V
型号: LB11696V
厂家: ONSEMI    ONSEMI
描述:

Direct PWM Drive Brushless Motor Predriver IC

电动机控制 光电二极管
文件: 总17页 (文件大小:526K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
LB11696V  
Monolithic Digital IC  
Direct PWM Drive Brushless  
Motor Predriver IC  
www.onsemi.com  
Overview  
The LB11696V is a direct PWM drive predriver IC designed for three-  
phase power brushless motors. A motor driver circuit with the desired  
output power (voltage and current) can be implemented by adding  
discrete transistors in the output circuits. Furthermore, the LB11696V  
provides a full complement of protection circuits allowing it to easily  
implement high-reliability drive circuits. This device is optimal for  
driving all types of large-scale motors such as those used in air  
conditioners and on-demand water heaters.  
SSOP30 (275mil)  
Features  
Three-phase bipolar drive  
Direct PWM drive (controlled either by control voltage or PWM variable duty pulse input)  
Built-in forward/reverse switching circuit  
Start/stop mode switching circuit (stop mode power saving function)  
Built-in input amplifier  
5 V regulator output (VREG pin)  
Current limiter circuit (Supports 0.25 V (typical) reference voltage sensing based high-precision detection)  
Undervoltage protection circuit (The operating voltage can be set with a zener diode)  
Automatic recovery type constraint protection circuit with protection operating state discrimination output (RD pin)  
Four types of Hall signal pulse outputs  
Supports thermistor based thermal protection of the output transistors  
Specifications  
Absolute Maximum Ratings at Ta = 25C  
Parameter  
Symbol  
Conditions  
Ratings  
unit  
V
Supply voltage 1  
V
I
max  
V
pin  
CC  
18  
30  
CC  
Output current  
max  
UL, VL, WL, UH, VH, and WH pins  
LVS pin  
mA  
V
O
LVS pin applied voltage  
Allowable power dissipation 1  
Allowable power dissipation 2  
LVS max  
Pd max 1  
Pd max 2  
18  
Independent IC  
0.45  
1.05  
W
When mounted on a 114.3 76.1 1.6 mm glass  
W
epoxy board  
Operating temperature  
Storage temperature  
Topr  
Tstg  
–20 to +100  
–55 to +150  
C  
C  
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.  
ORDERING INFORMATION  
See detailed ordering and shipping information on page 17 of this data sheet.  
© Semiconductor Components Industries, LLC, 2015  
March 2015 - Rev. 1  
1
Publication Order Number :  
LB11696V/D  
LB11696V  
Allowable Operating Ranges at Ta = 25 C  
Parameter  
Supply voltage range 1-1  
Supply voltage range 1-2  
Output current  
Symbol  
Conditions  
Ratings  
Unit  
V
V
V
1-1  
CC  
1-2  
CC  
V
V
pin  
8 to 17  
CC  
CC  
pin, when V is shorted to VREG.  
4.5 to 5.5  
25  
V
CC  
I
UL, VL, WL, UH, VH, and WH pins  
mA  
O
5 V constant voltage output current  
HP pin applied voltage  
HP pin output current  
IREG  
VHP  
IHP  
0 to 17  
0 to 15  
0 to 17  
0 to 15  
V
mA  
V
RD pin applied voltage  
RD pin output current  
VRD  
IRD  
mA  
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.  
Electrical Characteristics at Ta = 25 C, VCC = 12 V  
Ratings  
Parameter  
Symbol  
Unit  
min  
typ  
max  
Current drain 1  
Current drain 2  
I
I
1
2
12  
16  
4
mA  
mA  
CC  
2.5  
CC  
[5 V Constant Voltage Output (VREG pin)]  
Output voltage  
VREG  
ΔVREG1  
ΔVREG2  
Δ
4.7  
5.0  
40  
10  
0
5.3  
100  
30  
V
Line regulation  
V
I
mV  
mV  
Load regulation  
Temperature coefficient  
[Output Block]  
Output voltage 1-1  
Output voltage 1-2  
Output voltage 2  
V
V
OUT  
OUT  
V
OUT  
Output leakage current  
[Hall Amplifier Block]  
Input bias current  
I leak  
O
IHB (HA)  
VICM2  
Common-mode input voltage range 2  
Hall Input Sensitivity  
Hysteresis  
ΔVIN (HA)  
VSLH (HA)  
VSHL (HA)  
Input voltage low high  
Input voltage high low  
[CTL Amplifier]  
Input offset voltage  
Input bias current  
V
(CTL)  
IO  
I
(CTL)  
B
Common-mode input voltage range  
High-level output voltage  
Low-level output voltage  
Open-loop gain  
VICM  
V
OH  
V
OL  
[PWM Oscillator (PWM pin)]  
High-level output voltage  
Low-level output voltage  
External capacitor charge current  
Oscillator frequency  
Amplitude  
V
(PWM)  
(PWM)  
OH  
V
OL  
ICHG  
f (PWM)  
VPWM = 2.1 V  
C = 2000 pF  
V (PWM)  
[TOC pin]  
Input voltage 1  
VTOC1  
VTOC2  
Output duty: 100%  
2.68  
1.2  
3.0  
3.34  
1.5  
V
V
V
V
V
V
Input voltage 2  
Output duty: 0%  
1.35  
2.82  
1.29  
3.18  
1.44  
Input voltage 1 low  
Input voltage 2 low  
Input voltage 1 high  
Input voltage 2 high  
[HP Pin]  
VTOC1L  
VTOC2L  
VTOC1H  
VTOC2H  
Design target value, when VREG = 4.7 V, 100%  
Design target value, when VREG = 4.7 V, 0%  
Design target value, when VREG = 5.3 V, 100%  
Design target value, when VREG = 5.3 V, 0%  
2.68  
1.23  
3.02  
1.37  
2.96  
1.34  
3.34  
1.50  
Output saturation voltage  
Output leakage current  
VHPL  
I
= 10 mA  
0.2  
0.5  
10  
V
O
IHPleak  
V
= 18 V  
μA  
O
Continued on next page.  
www.onsemi.com  
2
LB11696V  
Continued from preceding page.  
Ratings  
typ  
Parameter  
Symbol  
Conditions  
Unit  
min  
max  
[CSD Oscillator (CSD pin)]  
High-level output voltage  
Low-level output voltage  
External capacitor charge current  
External capacitor discharge current  
Charge/discharge current ratio  
[RD Pin]  
V
OH (CSD)  
V
OL (CSD)  
ICHG1  
ICHG2  
RCSD  
VCSD = 2 V  
VCSD = 2 V  
(Charge current)/(discharge current)  
times  
Low-level output voltage  
Output leakage current  
[Current Limiter Circuit (RF pin)]  
Limiter voltage  
VRDL  
IO = 10 mA  
IL (RD)  
VO = 18 V  
VRF  
RF-RFGND  
[Undervoltage Protection Circuit (LVS pin)]  
Operating voltage  
VSDL  
VSDH  
VSD  
Release voltage  
Hysteresis  
[PWMIN Pin]  
Input frequency  
f (PI)  
kHz  
High-level input voltage  
Low-level input voltage  
Input open voltage  
V
IH (PI)  
V
IL (PI)  
V
IO (PI)  
Hysteresis  
V
IS (PI)  
High-level input current  
Low-level input current  
[S/S Pin]  
I
IH (PI)  
VPWMIN = VREG  
VPWMIN = 0 V  
I
IL (PI)  
μA  
High-level input voltage  
Low-level input voltage  
Hysteresis  
V
IH (SS)  
V
IL (SS)  
IS (SS)  
IH (SS)  
IL (SS)  
V
High-level input current  
Low-level input current  
[F/R Pin]  
I
VS/S = VREG  
VS/S = 0 V  
I
μA  
High-level input voltage  
Low-level input voltage  
Input open voltage  
V
IH (FR)  
IL (FR)  
IO (FR)  
IS (FR)  
IH (FR)  
IL (FR)  
V
V
Hysteresis  
V
High-level input current  
Low-level input current  
[N1 Pin]  
I
VF/R = VREG  
VF/R = 0 V  
I
μA  
μA  
μA  
High-level input voltage  
Low-level input voltage  
Input open voltage  
V
IH (N1)  
IL (N1)  
IO (N1)  
IH (N1)  
IL (N1)  
V
V
High-level input current  
Low-level input current  
[N2 Pin]  
I
VN1 = VREG  
VN1 = 0 V  
I
High-level input voltage  
Low-level input voltage  
Input open voltage  
V
IH (N2)  
IL (N2)  
IO (N2)  
IH (N2)  
IL (N2)  
V
V
High-level input current  
Low-level input current  
I
VN2 = VREG  
VN2 = 0 V  
I
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.  
www.onsemi.com  
3
LB11696V  
F/R = L  
F/R = H  
Output  
1
2
3
4
5
6
H
H
H
L
L
L
H
L
L
L
H
H
L
L
H
H
H
L
VH  
WH  
WH  
UH  
UH  
VH  
UL  
UL  
VL  
H
H
H
L
L
L
L
H
H
H
L
VL  
L
H
H
L
WL  
WL  
L
H
L
S/S Pin  
PWMIN Pin  
Input state  
State  
Input state  
State  
H
L
Stop  
Start  
High or open Output off  
Output on  
L
N1 and N2 Pins  
Input state  
HP output  
N1 pin  
N2 pin  
L
L
Single Hall sensor period divided by 2  
Single Hall sensor period  
L
High or open  
L
High or open  
High or open  
Three Hall sensor synthesized period divided by 2  
Three Hall sensor synthesized period  
High or open  
Since the S/S pin does not have an internal pull-up resistor, an external pull-up resistor or equivalent is required to set  
the IC to the stop state. If either the S/S or PWMIN pins are not used, the unused pin input must be set to the low-level  
voltage.  
The HP output can be selected (by the N1 and N2 settings) to be one of the following four functions: the IN1 Hall input  
converted to a pulse output (one-Hall output), the one-Hall output divided by two, the three-phase output synthesized  
from the Hall inputs (three-Hall synthesized output) or the three-Hall synthesized output divided by two.  
1.2  
114.3mm × 76.1mm × 1.6mm glass epoxy board  
1.05  
1
0.8  
0.6  
Independent  
0.45  
0.42  
0.4  
0.2  
0.18  
0
0
20  
40  
60  
80  
100  
120  
www.onsemi.com  
4
LB11696V  
Package Dimensions  
unit : mm  
SSOP30 (275mil)  
CASE 565AT  
ISSUE A  
SOLDERING FOOTPRINT*  
(Unit: mm)  
GENERIC  
MARKING DIAGRAM*  
XXXXXXXXXX  
YMDDD  
XXXXX = Specific Device Code  
Y = Year  
M = Month  
0.65  
0.32  
DDD = Additional Traceability Data  
NOTE: The measurements are not to guarantee but for reference only.  
*This information is generic. Please refer to  
device data sheet for actual part marking.  
*For additional information on our Pb-Free strategy and soldering  
details, please download the ON Semiconductor Soldering and  
Mounting Techniques Reference Manual, SOLDERRM/D.  
www.onsemi.com  
5
LB11696V  
Pin Assignment  
V
VREG LVS N2  
N1  
26  
HP F/R PWMIN S/S CSD RD PWM TOC EI–  
EI+  
16  
CC  
30  
29  
28  
27  
25  
24  
23  
22  
21  
20  
19  
18  
17  
LB11696V  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
GND RFGND RF  
WH  
WL  
VH  
VL  
UH  
UL IN1– IN1+ IN2– IN2+ IN3– IN3+  
Top view  
Pin Functions  
Pin No.  
1
Symbol  
Pin Description  
Equivalent circuit  
GND  
Ground  
VREG  
Output current detection reference  
Connect the ground terminal of the external resistor RF to  
this pin.  
RF  
GND  
2
2
VREG  
Output current detection  
Connect a resistor with a small value between this pin and  
RFGND.  
3
RF  
3
This sets the maximum output current IOUT to be 0.25/Rf.  
VCC  
4
6
8
5
7
9
WH  
VH  
UH  
WL  
VL  
Outputs (External transistor drive outputs)  
The duty control applies to the UH, VH, and WH pins.  
4
5
6
7
8
9
UL  
50 k  
Continued on next page.  
Page. 6  
LB11696V  
Continued from preceding page.  
Pin No. Pin Name  
Pin Description  
Equivalent circuit  
VCC  
10  
11  
12  
13  
14  
15  
IN1–  
IN1+  
IN2–  
IN2+  
IN3–  
IN3+  
Hall sensor inputs  
A high-level state is recognized when IN+ > IN–, and a  
low-level state is recognized under the reverse condition.  
If noise on the Hall sensor signals becomes a problem,  
insert capacitors between the IN+ and IN– inputs.  
300 Ω  
300 Ω  
10 12 14  
11 13 15  
VREG  
Control amplifier inputs  
The PWMIN pin must be held at the low level for control  
using this pin to function.  
16  
17  
EI+  
EI–  
300 Ω  
300 Ω  
16  
17  
VREG  
Control amplifier output  
When the TOC pin voltage rises, the IC changes the UH,  
VH, and WH output signal PWM duty to increase the  
torque output.  
18  
TOC  
18  
300  
40 kΩ  
VREG  
Shared function pin: PWM oscillator frequency setting and  
initial reset pulse generation  
Insert a capacitor between this pin and ground.  
A capacitor of 2000 pF sets a frequency of about 22 kHz.  
200 Ω  
19  
PWM  
19  
2 kΩ  
VREG  
20  
Motor constraint detection output  
20  
RD  
This pin output is on when the motor is turning and off  
when the constraint protection circuit operates.  
Continued on next page.  
Page. 7  
LB11696V  
Continued from preceding page.  
Pin No. Pin Name  
Pin Description  
Equivalent circuit  
VREG  
Constraint protection circuit operating time setting  
Insert a capacitor between this pin and ground.  
This pin must be connected to ground if the constraint  
protection circuit is not used.  
300 Ω  
21  
22  
23  
CSD  
21  
VREG  
Start/Stop input  
A low-level input sets the IC to start mode, and a high-  
level input sets it to stop mode.  
3.5 kΩ  
S/S  
22  
VREG  
50 kΩ  
PWM pulse input  
A low-level input specifies the output drive state, and a  
high-level or open input specifies the output off state.  
When this pin is used for control, the TOC pin voltage  
must be set to a control amplifier input that results in a  
100% duty.  
PWM  
IN  
3.5 kΩ  
23  
VREG  
50 kΩ  
3.5 kΩ  
24  
F/R  
Forward/reverse input  
24  
VREG  
25  
Hall signal output (This is an open-collector output)  
One of four output types is selected by the N1 and N2 pin  
settings.  
25  
HP  
Continued on next page.  
Page. 8  
LB11696V  
Continued from preceding page.  
Pin No. Pin Name  
Pin Description  
Equivalent circuit  
VREG  
50 kΩ  
300 Ω  
26  
N1  
Hall signal output (HP signal) type selector  
26  
VREG  
50 kΩ  
300 Ω  
27  
N2  
Hall signal output (HP signal) type selector  
27  
VCC  
28  
Undervoltage protection voltage detection  
If a 5 V or higher supply voltage is to be detected, set the  
detection voltage by inserting an appropriate zener diode  
in series.  
28  
LVS  
VCC  
Stabilized power supply output (5 V output)  
Insert a capacitor (about 0.1 µF) between this pin and  
ground for stabilization.  
29  
29  
VREG  
Power supply. Insert a capacitor between this pin and  
ground for stabilization.  
VCC  
30  
Page. 9  
LB11696V  
Hall Sensor Signal Input/Output Timing Chart  
F/R = L  
IN1  
IN2  
IN3  
UH  
VH  
WH  
UL  
VL  
WL  
F/R = H  
IN1  
IN2  
IN3  
UH  
VH  
WH  
UL  
VL  
WL  
Areas shown in gray (  
) indicate PWM output.  
Page. 10  
LB11696V  
Application Circuit Examples  
Bipolar transistor drive (high side PWM) using a 5 V power supply  
Page. 11  
LB11696V  
MOS transistor drive (low side PWM) using a 12 V power supply  
Page. 12  
LB11696V  
NMOS transistor + PNP transistor drive (low side PWM) using a 12 V power supply with thermal protection  
implemented using a thermistor  
Page. 13  
LB11696V  
LB11696V Functional Description  
1. Output Drive Circuit  
The LB11696V adopts direct PWM drive to minimize power loss in the outputs. The output transistors are always  
saturated when on, and the motor drive power is adjusted by changing the on duty of the output. The output PWM  
switching is performed on the UH, VH, and WH outputs. Since the UL to WL and UH to WH outputs have the same  
output form, applications can select either low side PWM or high side PWM drive by changing the way the external  
output transistors are connected. Since the reverse recovery time of the diodes connected to the non-PWM side of  
the outputs is a problem, these devices must be selected with care. (This is because through currents will flow at the  
instant the PWM side transistors turn on if diodes with a short reverse recovery time are not used.)  
2. Current Limiter Circuit  
The current limiter circuit limits the output current peak value to a level  
determined by the equation I = VFR/Rf (VRF = 0.25 V typical, Rf:  
current detection resistor). This circuit suppresses the output current by  
To the RF pin  
Current  
detection  
resistor  
reducing the output on duty.  
High-precision detection can be implemented by connecting the lines  
from the RF and RFGND pins close to the two terminal of the current  
detection resistor Rf.  
The current limiter circuit includes an internal filter circuit to prevent incorrect current limiter circuit operation due  
to detecting the output diode reverse recovery current due to PWM operation. Although there should be no problems  
with the internal filter circuit in normal applications, applications should add an external filter circuit (such as an RC  
low-pass filter) if incorrect operation occurs (if the diode reverse recovery current flows for longer than  
1 µs).  
3. Power Saving Circuit  
This IC goes to a low-power mode (power saving state) when set to the  
To the VREG pin  
stop state with the S/S pin. In the power saving state, the bias currents in  
most of the circuits are cut off. However, the 5 V regulator output  
(VREG) is still provided in the power saving state. If it is also necessary  
Hall  
device  
to cut the Hall device bias current, this function can be provided by an  
application that, for example, connects the Hall devices to 5 V through  
PNP transistors.  
To the S/S pin  
4. Notes on the PWM Frequency  
The PWM frequency is determined by the capacitor C (F) connected to the PWM pin.  
f
1/(22500 × C)  
PWM  
If a 2000 pF capacitor is used, the circuit will oscillate at about 22 kHz. If the PWM frequency is too low, switching  
noise will be audible from the motor, and if it is too high, the output power loss will increase. Thus a frequency in  
the range 15 to 50 kHz must be used. The capacitor's ground terminal must be placed as close as possible to the IC’s  
ground pin to minimize the influence of output noise and other noise sources.  
5. Control Methods  
The output duty can be controlled by either of the following methods  
• Control based on comparing the TOC pin voltage to the PWM oscillator waveform  
The low side output transistor duty is determined according to the result of comparing the TOC pin voltage to the  
PWM oscillator waveform. When the TOC pin voltage is 1.35 V or lower, the duty will be 0%, and when it is 3.0  
V or higher, the duty will be 100%.  
Since the TOC pin is the output of the control amplifier (CTL), a control voltage cannot be directly input to the  
TOC pin. Normally, the control amplifier is used as a full feedback amplifier (with the EI- pin connected to the  
TOC pin) and a DC voltage is input to the EI+ pin (the EI+ pin voltage will become equal to the TOC pin voltage).  
When the EI+ pin voltage becomes higher, the output duty increases. Since the motor will be driven when the EI+  
pin is in the open state, a pull-down resistor must be connected to the EI+ pin if the motor should not operate when  
EI+ is open.  
When TOC pin voltage control is used, a low-level input must be applied to the PWMIN pin or that pin connected  
to ground.  
Page. 14  
LB11696V  
• Pulse Control Using the PWMIN Pin  
A pulse signal can be input to the PWMIN pin, and the output can be controlled based on the duty of that signal.  
Note that the output is on when a low level is input to the PWMIN pin, and off when a high level is input. When  
the PWMIN pin is open it goes to the high level and the output is turned off. If inverted input logic is required,  
this can be implemented with an external transistor (npn).  
When controlling motor operation from the PWMIN pin, the EI– pin must be connected to ground, and the EI+  
pin must be connected to the TOC pin.  
Note that since the PWM oscillator is also used as the clock for internal circuits, a capacitor (about 2000 pF) must  
be connected to the PWM pin even if the PWMIN pin is used for motor control.  
6. Hall Input Signals  
A signal input with an amplitude in excess of the hysteresis (80 mV maximum) is required for the Hall inputs.  
Considering the possibility of noise and phase displacement, an even larger amplitude is desirable.  
If disruptions to the output waveforms (during phase switching) or to the HP output (Hall signal output) occur due to  
noise, this must be prevented by inserting capacitors across the inputs. The constraint protection circuit uses the Hall  
inputs to discriminate the motor constraint state. Although the circuit is designed to tolerate a certain amount of  
noise, care is required when using the constraint protection circuit.  
If all three phases of the Hall input signal system go to the same input state, the outputs are all set to the off state  
(the UL, VL, WL, UH, VH, and WH outputs all go to the low level).  
If the outputs from a Hall IC are used, fixing one side of the inputs (either the + or – side) at a voltage within the  
common-mode input voltage range allows the other input side to be used as an input over the 0 V to V range.  
CC  
7. Undervoltage Protection Circuit  
The undervoltage protection circuit turns one side of the outputs (UH, VH, and WH) off when the LVS pin voltage  
falls below the minimum operation voltage (see the Electrical Characteristics). To prevent this circuit from  
repeatedly turning the outputs on and off in the vicinity of the protection  
To the power  
operating voltage, this circuit is designed with hysteresis. Thus the output  
will not recover until the operating voltage rises 0.45 V (typical).  
The protection operating voltage detection level is set up for 5 V systems.  
The detected voltage level can be increased by shifting the voltage by  
inserting a zener diode in series with the LVS pin to shift the detection  
level. The LVS influx current during detection is about 75 µA. To  
increase the diode current to stabilize the zener diode voltage rise, insert  
a resistor between the LVS pin and ground.  
supply detected  
To the LVS pin  
If the LVS pin is left open, the internal pull-down resistor will result in the IC seeing a ground level input, and the  
output will be turned off. Therefore, a voltage in excess of the LVS circuit clear voltage (about 4.35 V) must be  
applied to the LVS pin if the application does not use the undervoltage protection circuit. The maximum rating for  
the LVS pin applied voltage is 18 V.  
8. Constraint Protection Circuit  
When the motor is physically constrained (held stopped), the CSD pin external capacitor is charged (to about 3.0 V)  
by a constant current of about 2.5 µA and is then discharged (to about 1.0 V) by a constant current of about 0.14 µA.  
This process is repeated, generating a sawtooth waveform. The constraint protection circuit turns motor drive on and  
off repeatedly based on this sawtooth waveform. (The UH, VH, and WH side outputs are turned on and off.) Motor  
drive is on during the period the CSD pin external capacitor is being charged from about 1.0 V to about 3.0 V, and  
motor drive is off during the period the CSD pin external capacitor is being discharged from about 3.0 V to about  
1.0 V. The IC and the motor are protected by this repeated drive on/off operation when the motor is physically  
constrained.  
The motor drive on and off times are determined by the value of the connected capacitor C (in µF).  
TCSD1 (drive on period) 0.8 × C (seconds)  
TCSD2 (drive off period) 14.3 × C (seconds)  
When a 0.47 µF capacitor is connected externally to the CSD pin, this iterated operation will have a drive on period  
of about 0.38 seconds and a drive off period of about 6.7 seconds.  
Page. 15  
LB11696V  
While the motor is turning, the discharge pulse signal (generated once for each Hall input period) that is created by  
combining the Hall inputs internally in the IC discharges the CSD pin external capacitor. Since the CSD pin voltage  
does not rise, the constraint protection circuit does not operate.  
When the motor is physically constrained, the Hall inputs do not change and the discharge pulses are not generated.  
As a result, the CSD pin external capacitor is charged by a constant current of 2.5 µA to about 3.0 V, at which point  
the constraint protection circuit operates. When the constraint on the motor is released, the constraint protection  
function is released.  
Connect the CSD pin to ground if the constraint protection circuit is not used.  
9. Forward/Reverse Direction Switching  
This IC is designed so that through currents (due to the output transistor off delay time when switching) do not flow  
in the output when switching directions when the motor is turning. However, if the direction is switched when the  
motor is turning, current levels in excess of the current limiter value may flow in the output transistors due to the  
motor coil resistance and the motor back EMF state when switching. Therefore, designers must consider selecting  
external output transistors that are not destroyed by those current levels or only switching directions after the speed  
has fallen below a certain speed.  
10. Handling Different Power Supply Types  
When this IC is operated from an externally supplied 5 V power supply (4.5 to 5.5 V), short the V pin to the  
CC  
VREG pin and connect them to the external power supply.  
When this IC is operated from an externally supplied 12 V power supply (8 to 17 V), connect the V pin to the  
CC  
power supply. (The VREG pin will generate a 5 V level to function as the control circuit power supply.)  
11. Power Supply Stabilization  
Since this IC uses a switching drive technique, the power supply line level can be disturbed easily. Therefore  
capacitors with adequate capacitance to stabilize the power supply line must be inserted between V and ground.  
CC  
If diodes are inserted in the power supply lines to prevent destruction if the power supply is connected with reverse  
polarity, the power supply lines are even more easily disrupted, and even larger capacitors are required.  
If the power supply is turned on and off by a switch, and if there is a significant distance between that switch and the  
stabilization capacitor, the supply voltage can be disrupted significantly by the line inductance and surge current into  
the capacitor. As a result, the withstand voltage of the device may be exceeded. In application such as this, the surge  
current must be suppressed and the voltage rise prevented by not using ceramic capacitors with a low series  
impedance, and by using electrolytic capacitors instead.  
12. VREG Stabilization  
To stabilize the VREG voltage, which is the control circuit power supply, a 0.1 µF or larger capacitor must be  
inserted between the VREG pin and ground. The ground side of this capacitor must connected to the IC ground pin  
with a line that is as short as possible.  
Page. 16  
LB11696V  
ORDERING INFORMATION  
Device  
Package  
Shipping (Qty / Packing)  
48 / Fan-Fold  
SSOP30 (275mil)  
(Pb-Free)  
LB11696V-MPB-E  
LB11696V-TLM-E  
LB11696V-TRM-E  
SSOP30 (275mil)  
(Pb-Free)  
1000 / Tape & Reel  
1000 / Tape & Reel  
SSOP30 (275mil)  
(Pb-Free)  
† For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel  
Packaging Specifications Brochure, BRD8011/D. http://www.onsemi.com/pub_link/Collateral/BRD8011-D.PDF  
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States  
and/or other countries. SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of  
SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without  
further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitabilityof its products for any particular purpose,  
nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including  
without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can  
and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each  
customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are  
not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or  
sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should  
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers,  
employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of,  
directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was  
negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all  
applicable copyright laws and is not for resale in any manner.  
www.onsemi.com  
17  

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