LV8804FV [SANYO]
PC and Server Fan Motor Driver; PC和服务器风扇电机驱动器
| 型号： | LV8804FV |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | PC and Server Fan Motor Driver |
| 文件： | 总9页 (文件大小：113K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA1441
Bi-CMOS LSI
PC and Server
Fan Motor Driver
LV8804FV
Overview
The LV8804FV is a motor driver for PC and server fans.
Feature
• Direct PWM 3-phase sensorless motor driver
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
max
CC
Conditions
Ratings
Unit
V
V
maximum supply voltage
V
16
CC
VG maximum supply voltage
OUT pin maximum output current
SOFTST pin withstand voltage
FR pin withstand voltage
VG max
max
21
V
I
UO, VO, and WO pins
1.2
A
OUT
V
V
V
V
V
I
max
6
V
SOFTST
max
FR
6
V
CTL pin withstand voltage
max
CTL
6
V
MINSP pin withstand voltage
FG output pin withstand voltage
FG pin maximum output current
Allowable Power dissipation
max
6
V
MINSP
max
FG
16
5
V
max
mA
W
W
°C
°C
FG
Pd max1
Pd max2
Topr
Independent IC
0.6
Mounted on specified board *
1.3
Operating temperature
Storage temperature
-40 to +85
-55 to +150
Tstg
* Specified board: 76.1mm × 114.3mm × 1.6mm, glass epoxy board (single-layer)
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.
42809 MS PC 20090330-S00014 No.A1441-1/9
LV8804FV
Allowable Operating Conditions at Ta = 25°C
Parameter
supply voltage
Symbol
Conditions
Ratings
Unit
V
V
V
V
V
V
V
6 to 15
0 to VREG
0 to VREG
0 to VREG
0 to VREG
CC
CC
SOFTST input voltage range
FR input voltage range
V
SOFTST
FR
V
CTL input voltage range
MINSP input voltage range
V
CTL
V
MINSP
Electrical Characteristics at Ta = 25°C, V
= 12V, unless otherwise specified
CC
Ratings
typ
Parameter
Symbol
1
Conditions
Unit
mA
min
max
4
Circuit current 1
I
3
CC
Charge pump block
Charge pump output voltage
Regulator block
V
17
5
V
V
VG
5V regulator voltage
V
4.75
5.25
VREG
Output on resistance
High-side output transistor on resistance
Low-side output transistor on resistance
Ron (H)
Ron (L)
I
= 0.7A, VG = 17V
0.6
0.6
1.2
1.0
1.0
2
Ω
Ω
Ω
O
I
= 0.7A, V
= 0.7A, V
= 12V
O
CC
CC
Sum of high-/low-side output transistor
on resistance
Ron (H+L)
I
= 12V, VG = 17V
O
Startup oscillator (OSC) pin
OSC pin charge current
I
I
C
D
-2.5
2.5
µA
µA
OSC
OSC pin discharge current
OSC
Control voltage input (CTL) pin
Motor drive on voltage input range
Motor drive off voltage input range
Minimum speed setting pin
V
V
ON
0
3
V
V
CTL
OFF
3.5
VREG
CTL
Minimum speed setting voltage input
range
V
V
1
1
4
3
V
V
MINSP
Minimum speed releasing voltage input
range
2
VREG
MINSP
Forward/reverse switching pin
High-level input voltage range
V
V
H
Order of current application :
UOUT→VOUT→WOUT
Order of current application :
UOUT→WOUT→VOUT
4
0
VREG
1
V
V
FR
Low-level input voltage range
L
FR
FG output pin
FG output pin low-level voltage
Current limiter circuit
Limiter voltage
V
V
When I is 2mA
O
0.25
0.25
0.35
V
V
FG
Limit current set to 1A when RF is 0.25Ω.
0.225
0.275
RF
Constraint protection circuit
CT pin high-level voltage
CT pin low-level voltage
CT pin charge current
CT pin discharge current
ICT charge/discharge ratio
Soft start circuit
V
V
I
H
2.25
0.43
-2.9
0.23
7
2.8
0.5
2.95
0.65
-2.2
0.32
13
V
V
CT
L
CT
C
-2.5
0.25
10
µA
µA
CT
I
D
CT
R
CT
Soft start releasing voltage
SOFTST pin charge current
Thermal protection circuit
V
2.5
0.6
V
SOFTST
SOFTST
I
µA
Thermal protection circuit operating
temperature
TSD
Design target *
150
180
210
°C
* : Design target value and no measurement is made. The thermal protection circuit is incorporated to protect the IC from burnout or thermal destruction. Since
it operates outside the IC's guaranteed operating range, the customer's thermal design should be performed so that the thermal protection circuit will not be
activated when the fan is running under normal operating conditions.
No.A1441-2/9
LV8804FV
Package Dimensions
unit : mm (typ)
3360
Pd max -- Ta
1.2
Thermal resistance
evaluation board :
Thermal resistance
evaluation board
5.2
76.1×114.3×1.6mm3
1.0
0.95
glass epoxy
20
0.8
0.6
0.42
1 2
0.4
0.3
0.2
0.5
0.22
0.15
Independent IC
(0.35)
0.13
100
0
-30 -20
0
20
40
60
80
120
Ambient temperature,Ta -- °C
SANYO : SSOP20J(225mil)
Pin Assignment
SOFTST
FG
1
2
3
4
5
6
7
8
9
20 MINSP
19 CTL
CT
18 F/R
OSC
GND
VG
17 VREG
16 FIL
LV8804FV
15 COMIN
14 COM
CP
CPC
RF
13 V
CC
12 UO
11 VO
WO 10
Top view
No.A1441-3/9
LV8804FV
Block Diagram
V
CC
FG
CT
VG CPO
CP
CHARGE
PUMP
FG
RD
CTOSC
VREF
CTL
VREG
F/R
CTLAMP
REFOSC
CTL
VREG
VREG
MINSP
SENSORLESS
LOGIC
OSC
START
OSC
PRI DRIVE
FIL
V
CC
COMIN
COM
UO
VO
WO
SELECTOR
CURR LIM
COM
RF
GND SOFTST
No.A1441-4/9
LV8804FV
Pin Function
Pin No.
Pin name
Function
Soft start time setting.
The motor can be started smoothly by
Equivalent circuit
1
SOFTST
VREG
connecting a capacitor between this pin and
ground.
500Ω
1
2
FG
FG pulse output. This pin outputs a Hall
sensor system equivalent pulse signal.
2
3
CT
Motor lockup detection time setting.
When the motor lockup condition is detected,
the protection time period before the
protection circuit is activated is set by
connecting a capacitor between this pin and
ground.
VREG
500Ω
3
4
OSC
Motor startup frequency setting. A capacitor
must be connected between this pin and
ground. The startup frequency is adjusted by
controlling the charge/discharge current and
capacitance of the capacitor.
VREG
500Ω
4
5
6
GND
VG
GND pin.
Charge pump step-up voltage output.
7
A capacitor must be connected between this
8
V
CC
pin and the V
pin or ground.
CC
VREG
7
8
CP
Charge pump step-up pulse output pin.
A capacitor must be connected between this
pin and the CPC pin (pin 14).
6
CPC
Charge pump step-up pin.
A capacitor must be connected between this
pin and the CP pin (pin 13).
13
V
Power supply for the IC and motor.
Capacitors must be connected between
these pins and ground.
CC
13
12
11
10
UO
VO
WO
Output pins. Connect these pins to the U, V,
and W of the motor coil.
12
50kΩ
11
50kΩ
10
50kΩ
9
9
RF
Output current detection pins. The drive
current is detected by connecting a resistor
between these pins and ground.
Continued on next page.
No.A1441-5/9
LV8804FV
Continued from preceding page.
Pin No.
14
Pin name
COM
Function
Equivalent circuit
Motor middle point connection.
VG
15
16
COMIN
FIL
Motor position detection comparator filter
pin. A capacitor must be connected between
this pin and the FIL pin (pin 16).
UO VO WO
14
Motor position detection comparator filter
pin. A capacitor must be connected between
this pin and the COMIN pin (pin 15).
15 16
17
VREG
Regulator voltage (5V) output.
A capacitor must be connected between
these pins and ground.
V
CC
17
VREG
18
F/R
Motor rotation direction switching. A
VREG
Reverse signal
high-level input causes current to flow into
the motor in the order of U, V, and W and a
low-level input in the order of U, W, and V.
Changing the order of current application
turns the motor in the opposite direction.
15kΩ
Forward/reverse
switching signal
18
100kΩ
Forward signal
19
CTL
Motor control voltage input.
VREG
When the control voltage is higher than 3V
(3V < CTL voltage), the motor stops.
The motor speed is controlled by varying the
control voltage within the range of 3V to 1V
(3V > CTL voltage > 1V). When the control
voltage becomes lower that 1V (1V > CTL
voltage), the current limit set by the RF
resistor is reached.
20
MINSP
Minimum speed setting voltage input.
The minimum speed of the motor can be set
by resistor-dividing the regulator voltage and
feeding the resultant voltage that is within the
range of 1V to 3V (1 V < MINSP < 3V).
500Ω
500Ω
20
19
No.A1441-6/9
LV8804FV
LV8804FV Functional Description
1. Control Characteristics
IRF
When RF = 0.25Ω
The gradient and limit current are determined by the resistance of the RF pin.
1A
Minimum speed
This minimum speed is determined by the MINSP pin voltage.
0.5A
VCTL
0V
1V
2V
3V
4V
The current flowing to the motor and the control characteristics are determined by adjusting the resistance of the RF
resistor.
By connecting a resistor with a resistance of 0.25Ω between the RF pin and GND, the limit current is set at a motor
current of 1A, and the control characteristics shown in the diagram above are achieved.
By increasing the RF resistance, the limit current is reduced; conversely, by reducing the RF resistance, the limit
current is increased.
Since I max. is 1.2A, the RF resistance must be set in such a way that the current flowing to the motor does not exceed
O
this maximum value.
By varying the CTL voltage between 1V and 3V, the current flowing to the output is limited.
PWM control is exercised within the voltage range above (1V to 3V) to control the motor speed.
When the CTL voltage is less than 1V, the current limiter value determined by the RF resistance is reached, and the
motor speed is limited.
When the CTL voltage is greater than 3V, PWM is reduced to 0%, and the motor stops. (However, the motor does not
stop if the minimum speed has been set.)
The minimum speed can be set by resistor-dividing the REG voltage (5V) to create a voltage of 1V to 3V, and inputting
this voltage to the MINSP pin.
If the minimum speed is not going to be set, the MINSP pin and CTL pin (pin 8) must be short-circuited.
2. Timing at Startup (soft start)
V
pin
CC
CTL pin
Stop
Full speed
The gradient changes in accordance with the capacitance of the SOFTST pin.
(The higher the capacitance, the steeper the gradient.)
Soft start
SOFTS pin
Stop
Full speed
No.A1441-7/9
LV8804FV
Application Circuit Example
*2
10µF/25V
0.1µF
*9
V
CC
UO
VO
VG
CP
WO
*9
0.1µF
COM
CPC
VREG
COMIN
FIL
47kΩ
47kΩ
1µF/10V
0.01µF
RFG=
10k to 100kΩ
*3
MINSP
*8
22kΩ
68kΩ
CTL
FG
4,7kΩ
1µF
10kΩ
27kΩ
F/R
CT
PWM
*5
0.25Ω
1µF
*4
SOFTST
OSC
RF
1µF
*6
1000pF
*7
GND
*1
*1. Power supply and GND wiring
The GND is connected to the control circuit power supply system.
*2. Power-side power stabilization capacitor
For the power-side power stabilization capacitor, use a capacitor of 10µF or more.
Connect the capacitor between V
and GND with a thick and along the shortest possible route.
CC
*3. COMIN and FIL pins
These pins are used to connect the filter capacitor. The LV8804FV uses the back EMF signal generated when the
motor is running to detect the information on the rotor position. The IC determines the timing at which the output
block applies current to the motor based on the position information obtained here. Insert a filter capacitor (1,000pF to
10,000pF) between the COMIN pin and FIL pin to prevent any motor startup miss-operation that is caused by noise.
However, care must be taken since an excessively high capacitance will give rise to deterioration in efficiency and
delays in the output power-on timing while the motor is running at high speed.
Furthermore, connect the capacitor between the COMIN pin and FIL pin as close as possible in order to avoid the
effects of noise from other sources.
*4. CT pin
This pin is used to connect the lock detection capacitor.
The constant-current charging and constant-current discharging circuits incorporated causes locking when the pin
voltage reaches 2.5V, and releasing the lock protection when it drops to 0.5V. This pin must be connected to the GND
when it is not going to be used.
*5. RF pins
These pins are used to set the current limit.
When the pin voltage exceeds 0.25V, the current is limited, and regeneration mode is established. In the application
circuit, this voltage is set in such a way that the current limit will be established at 1A.
The calculation formula is given below.
RF resistance = 0.25V/target current limit value
*6. SOFTST pin
This pin is used to set the soft start.
By connecting a capacitor between this pin and GND, the motor speed can be increased gradually.
When the pin voltage exceeds 2.5V, the soft start is released, and the LV8804FV is switched to normal control.
If the soft start function is not going to be used, connect the pin to the VREG pin.
No.A1441-8/9
LV8804FV
*7. OSC pin
This pin is used to connect the capacitor for setting the startup frequency.
A capacitor with a capacitance ranging from about 500pF to 2,200pF (recommended value) must be connected
between this pin and GND.
The OSC pin determines the motor startup frequency, so be sure to connect a capacitor to it.
<How to select the capacitance>
Select a capacitance value that will result in the shortest possible startup time for achieving the target speed and
produce minimal variations in the startup time. If the capacitance is too high, variations in the startup time will
increase; conversely, if it is too low, the motor may idle. The optimum OSC constant depends on the motor
characteristics and startup current, so be sure to recheck them when the type of motor used or circuit specifications are
changed.
*8. MINSP pin
This pin is used to input the voltage to set the minimum speed.
The minimum speed can be set by resistor-dividing the VREG voltage (5V) to create a voltage of 1 to 3V, and
inputting this voltage to the MINSP pin.
If the minimum speed is not going to be set, the MINSP pin and CTL pin must be short-circuited.
*9. VG, CP, and CPC pins
These pins are used to connect the capacitors to generate the pre-drive voltage and stabilize the pre-drive power
supply.
Be sure to connect these capacitors in order to generate the drive voltage for the high-side (upper) output DMOS
transistor.
*10. VREG pins
These are the control system power supply pin and regulator output pin, which create the power supply of the control
unit. Be sure to connect a capacitor between this pin and GND in order to stabilize control system operation.
Since these pins are used to supply current for control and generate the charge pump voltage, connect a capacitor with
a capacitance that is higher than that of the capacitor connected to the charge pump.
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of April, 2009. Specifications and information herein are subject
to change without notice.
PS No.A1441-9/9
相关型号：
LV8804V-MPB-H
Direct PWM Structure Three-Phase Sensorless Fan Motor Driver, SSOP36J (275mil) Exposed Pad, 30-FNFLD
ONSEMI
©2020 ICPDF网 联系我们和版权申明