LB11970RV-MPB-H [ONSEMI]
Single-Phase Full-Wave Fan Motor Driver, SSOP18 (225 mil), 60-FNFLD;
| 型号： | LB11970RV-MPB-H |
| 厂家： | 
ONSEMI |
| 描述： | Single-Phase Full-Wave Fan Motor Driver, SSOP18 (225 mil), 60-FNFLD 电动机控制 光电二极管 |
| 文件： | 总7页 (文件大小：222K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number: ENA2095
LB11970RV
Monolithic Digital IC
For Fan Motor
http://onsemi.com
Single-phase Full-wave Driver
Overview
The LB11970RV is a motor driver of the single phase bipolar drive that a good direct PWM drive of the motor drive
efficiency can come true easily. It is most suitable for the power supply fan of the personal computer, CPU air
conditioner fan drive.
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
• RD (Lock 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
1.2
18
10
7
CC
VM maximum supply voltage
OUT pin maximum output current
OUT pin output withstand voltage
HB maximum output current
VTH, RMI input pin withstand voltage
P-IN input pin withstand voltage
RD output pin output withstand voltage
RD output current
VM max
max
V
I
A
OUT
V
max
V
OUT
HB
mA
V
VTH RMI max
VP-IN max
V
V
CC
V
I
max
18
V
RD
max
10
mA
W
°C
°C
RD
Allowable power dissipation
Operating temperature range
Storage temperature range
Pd max
Topr
Specified substrate *
0.8
-30 to 90
Tstg
-55 to 150
* Specified substrate: 30mm×30mm×0.8mm, paper phenol.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high
current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
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
71812 SY 20060927-S00008 No.A2095-1/7
LB11970RV
Recommended Operating Ranges at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
4.5 to 16
Unit
V
V
supply voltage
V
CC
VM supply voltage
CC
VM
3.5 to 16
0 to 6
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
1.32
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
1.6
V
CT
1
2.2
μA
μA
CT
I
2
0.22
10
CT
R
CT
L
V
I
I
=200mA
0.1
0.2
0.8
V
V
O
O
O
V
H
=200mA, R =1Ω
0.6
O
f
VRF
480
0.2
mV
V
V
RD output pin L voltage
RD output pin leak current
Overheat protection circuit
I
=5mA
0.3
30
RD
RD
I
L
V
=18V
μA
°C
RD
THD
RD
* Design guarantee value
180
*: Design target value and no measurement were made.
No.A2095-2/7
LB11970RV
Package Dimensions
unit : mm (typ)
3338
8.0
Pd max - Ta
1.0
0.8
0.6
0.4
18
10
Mounted on a board: 30mm 30mm 0.8mm,
×
×
paper phenol
1
9
0.8
0.3
0.15
0.38
(0.8)
0.2
0
-30
-10
10
30
50
70
90
110
Ambient Temperature, Ta - °C
SSOP18(225mil)
Pin Assignment
P-GND
OUT1
1
2
3
4
18
17
16
OUT2
VM
V
S-GND
CC
WH
WL
15 6VREG
CT
13 IN-
5
14
LB11970RV
VTH
6
7
8
9
RMI
HB
12
11
10
P-IN
IN+
RD
CPWM
(Top view)
PGND: Motor system GND
SGND: Control system GND
No.A2095-3/7
LB11970RV
Equivalent Circuit Diagram
RD
RMI
VTH
H: Rotation mode
CPWM
P-IN
Thermal shat down
L: Regeneration mode
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
OUT2
RD
L
Mode
L
L
L
L
H
H
-
H
L
H
L
L
H
L
Running - drive
(OPEN)
H
L
H
L
OFF
L
L
H
Running - regeneration
H
L
OFF
L
-
-
-
-
H
L
OFF
L
Output regeneration mode
with external signal
L
H
L
OFF
L
H
L
H
H
OFF
L
OFF
Lock protection
-
H
OFF
VTH, P-IN = L means VTH, P-IN < CPWM VTH, P-IN = H means VTH, P-IN > CPWM
No.A2095-4/7
LB11970RV
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.A2095-5/7
LB11970RV
*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 thermostat
The resistance (RTU from V
CC
or 6VREG and the voltage generated through division of thermostat (TH) are input
in the VTH pin. When the voltage at the VTH pin drops below VCPL due to temperature change, the full speed
(thermostat input speed control side only) is obtained.
To set the full speed with the thermostat tripping, connect each pin of 3-3 to V
and each input voltage is
CC
generated by divided resistance from V . When the thermostat trips and the VTH pin is pulled up to VCC, the full
CC
speed (thermostat 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.
CC
When 12V is used, the current limiter must be applied at 1A or less if the coil resistance is 10Ω or less.
*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. RD output
This is the open collector output, the output "H (OFF)" at the time of "L", and a stop at the time of a turn. 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 thermostat speed control, which must be pulled up with 6 VREG when not used.
By connecting the capacitor, the time to ignore thermostat 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.A2095-6/7
LB11970RV
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PS No.A2095-7/7
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