LB11970FV [ONSEMI]
For Fan Motor Single-phase Full-wave Driver; 对于风扇电机单相全波驱动
| 型号： | LB11970FV |
| 厂家： | 
ONSEMI |
| 描述： | For Fan Motor Single-phase Full-wave Driver |
| 文件： | 总7页 (文件大小：109K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA0707
Monolithic Digital IC
For Fan Motor
LB11970FV
Single-phase Full-wave Driver
Overview
The LB11970FV is a single-phase full-wave driver for fan motor.
Functions
• Single-phase full-wave drive (16V to 1.2A output transistor incorporated)
• Variable speed function using thermistor input and external signal incorporated
→Enables silent and low-vibration variable speed control through direct PWM control with separately-excited upper Tr
• Current limiter circuit (limit at I =480mA with R =1Ω connection, the limiter value determined with Rf)
O
L
• Kick-back absorption circuit incorporated
• Low-consumption, low-loss, and low-noise drive enabled by the soft switching circuit during phase shift
• Regeneration Di incorporated with less external parts
• HB incorporated
• Lock protection and automatic reset functions incorporated
• FG (rotation detection) output
• Thermal shutdown circuit incorporated
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
max
CC
Conditions
Ratings
Unit
V
V
maximum supply voltage
V
17
17
CC
VM maximum supply voltage
VM max
max
V
OUT pin maximum output current
OUT pin output withstand voltage
I
1.2
18
A
OUT
V
max
V
OUT
Continued on next page.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
's products or
equipment.
30707 MS IM B8-8588, B8-8433 No.A0707-1/7
LB11970FV
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
Unit
mA
V
HB maximum output current
VTH, RMI input pin withstand voltage
P-IN input pin withstand voltage
FG output pin output withstand voltage
FG output current
HB
10
7
VTH RMI max
VP-IN max
VFG max
IFG max
Pd max
V
V
CC
18
V
10
mA
W
Allowable power dissipation
Operating temperature range
Storage temperature range
Specified substrate *
0.8
Topr
-30 to 90
°C
°C
Tstg
-55 to 150
* Specified substrate: 30mm×30mm×0.8mm, paper phenol.
Recommended Operating Ranges at Ta = 25°C
Parameter
supply voltage
Symbol
Conditions
Ratings
Unit
V
V
V
4.5 to 16
3.5 to 16
0 to 6
CC
VM supply voltage
CC
VM
V
VTH, RMI input level voltage range
P-IN input level voltage range
VTH, RMI
VP-IN
V
0 to V
CC
V
Triangular wave input range
VRM
0.5 to 4
0.2 to 3
V
Hall input common phase input voltage range
VICM
V
Electrical Characteristics at Ta = 25°C, V
= 12V, R = 0Ω, unless otherwise specified.
f
CC
Ratings
typ
Parameter
Circuit current
Symbol
1
Conditions
unit
min
max
18
I
I
During drive
12
11
15
14
mA
mA
V
CC
2
During lock protection
IHB=5mA
17
CC
VHB
HB voltage
1.12
5.85
3.4
1.4
1.8
0.18
8
1.22
5.95
3.6
1.6
2.2
0.22
10
1.32
6.10
3.8
1.8
2.6
0.26
12
V6VREG
6VREG voltage
I6VREG=5mA
V
V
V
I
H
L
CT pin H level voltage
CT pin L level voltage
CT pin charge current
CT pin discharge current
CT charge/discharge current ratio
OUT output L saturation voltage
OUT output H saturation voltage
Current limiter
V
CT
V
CT
1
µA
µA
CT
I
2
CT
R
CT
L
V
I
I
=200mA
0.1
0.6
480
10
0.2
0.8
V
V
O
O
O
V
H
=200mA, R =1Ω
O
f
VRF
VHN
mV
mV
Hall input sensitivity
Zero peak value
20
(including offset and hysteresis)
VFG
IFGL
THD
FG output pin L voltage
FG output pin leak current
Overheat protection circuit
IFG=5mA
0.2
0.3
30
V
VFG=7V
µA
°C
* Design guarantee value
180
*: Design target value and no measurement was made.
No.A0707-2/7
LB11970FV
Package Dimensions
unit : mm (typ)
3338
Pd max - Ta
Mounted on a board: 30mm×30mm×0.8mm,
1.0
paper phenol
8.0
0.8
0.6
0.4
18
10
0.38
1
9
0.8
0.3
0.15
0.2
0
(0.8)
-30
-10
10
30
50
70
90
110
ILB01811
Ambient Temperature, Ta -°C
SANYO : SSOP18(225mil)
Pin Assignment
OUT2
VM
18 P-GND
OUT1
1
2
3
17
V
16 S-GND
15 6VREG
14 CT
CC
WH
WL
4
5
6
7
8
9
LB11970FV
-
13 IN
VTH
HB
12
11
10
RMI
P-IN
+
IN
CPWM
FG
Top view
PGND: Motor system GND
SGND: Control system GND
No.A0707-3/7
LB11970FV
Equivalent Circuit Diagram
FG
RMI
VTH
H: Rotation mode
CPWM
Thermal shat down
L: Regeneration mode
P-IN
Comparator
V
CC
Current control
circuit
VM
6VREG
HB
Constant voltage
1.25V
Delay circuit
Controller
OUT
OUT
M
HALL
+
IN
Delay circuit
Oscillation
-
IN
Hysteresis
AMP
Charge/discharge
circuit
CT
SGND
CPWM
PGND
P-IN
RMI VTH
WH
WL
Truth Table
VTH
PIN
IN-
IN+
L
CT
L
OUT1
H
OUT2
L
FG
L
Mode
L
H
L
L
Running - drive
(OPEN)
L
H
L
L
H
OFF
L
L
H
L
OFF
L
L
H
Running - regeneration
L
H
L
OFF
L
OFF
L
-
-
-
-
H
H
-
H
L
OFF
L
Output regeneration mode
with external signal
L
H
L
OFF
L
OFF
L
H
L
H
H
OFF
L
Lock protection
-
H
OFF
OFF
VTH, P-IN = L means VTH, P-IN < CPWM VTH, P-IN = H means VTH, P-IN > CPWM
No.A0707-4/7
LB11970FV
Application Circuit Example
*4
Rf
CM
*2
V
VM
CC
HB
*8
-
IN
H
*5
*7
+
IN
FG
6VREG
*3-3
R4
R6
PIN
WH
C=2200 to 4700pF
R=20 to 50Ω
*3-1
R1
R5
PWM-IN
OUT1
R2
R3
WL
R7
R8
*3-2
R1
RMI
OUT2
PGND
RTU
*3
WH
WL
VTH
R2
TH
CPWM
*1
CP=100pF
*f=25kHz
*6
R3
CT
SGND
CT=0.47 to 1µF
No.A0707-5/7
LB11970FV
*1. Power supply - GND wiring
PGND is connected to the motor power system while SGND is connected to the control circuit power system.
Wiring is made separately for PGND and SGND, and external parts of each control system are connected to SGND.
*2. Power stabilization capacitor for regeneration
CM capacitor is a power stabilizing capacitor for PWM drive and kick-back absorption and has the capacitance of
4.7µF or more. Since this IC performs current regeneration with the lower Tr through switching of the upper Tr,
connect CM with the thick and shortest possible pattern between VM and PGND.
*3. Setting of the temperature detection variable speed
Setting of the triangular wave oscillation voltage
The rotation speed variable range for the temperature is set with the triangular wave oscillation voltage.
There are two setting methods as follows:
3-1 The upper voltage (VCPH) of triangular wave is determined by V[voltage of the R1 connection counterpart]
(R2/(R1+R2)) and the lower voltage (VCPL) of triangular wave is determined by V ((R2//R3) / (R1+R2//R3)).
3-2 The upper voltage (VCPH) of triangular wave is determined by V ((R2+R3) / (R1+R2+R3)) and the lower voltage
×
×
×
(VCPL) of triangular wave is determined by V
× (R2/(R1+R2)).
Setting of the thermistor
The resistance (RTU from V
CC
or 6VREG and the voltage generated through division of thermistor (TH) are input
in the VTH pin. When the voltage at the VTH pin drops below VCPL due to temperature change, the full speed
(thermistor input speed control side only) is obtained.
To set the full speed with the thermistor tripping, connect each pin of 3-3 to V
and each input voltage is
CC
generated by divided resistance from V . When the thermistor trips and the VTH pin is pulled up to VCC, the full
CC
speed (thermistor input speed control side only) is obtained.
*4. Setting the current limiter
The current limiter is activated when the voltage between current detection resistors exceeds 0.48V between V
VM.
and
CC
The current limiter is activated at I = 480mA when R = 1Ω. Setting is made with the Rf resistance.
O
L
Short-circuit V
and VM when the current limiter is not to be used.
When 12V is used, the current limiter must be applied at 1A or less if the coil resistance is 10Ω or less.
CC
*5. Hall input
Wiring must be as short as possible to prevent carrying of noise. The Hall input circuit is a comparator with
hysteresis of 20mV. The Hall input level is recommended to be three times (60mVp-p) or more of this hysteresis.
*6. Capacitor to set the PWM oscillation frequency
Oscillation with f = 25kHz occurs at CP = 100pF and PWM voltage width of 1.6V, and becomes the reference
frequency of PWM.
*7. FG output
This is the open collector output, enabling detection of the rotation speed using the FG output corresponding to the
phase shift. Keep this output OPEN when not used.
*8. HB pin
Hall element bias pin, which is a 1.22V constant-voltage output pin
*9. RMI pin
Minimum speed setting pin for thermistor speed control, which must be pulled up with 6 VREG when not used.
By connecting the capacitor, the time to ignore thermistor input at startup can be set.
*10. PIN pin
Direct PWM speed control pin. Pull down the P-IN input to GND when not using this pin.
The lowest output DUTY setting is made with R4 and R5. Keep R5 open for stop with DUTY at 0%.
No.A0707-6/7
LB11970FV
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This catalog provides information as of March, 2007. Specifications and information herein are subject
to change without notice.
PS No.A0707-7/7
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