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SDC11170 데이터시트 PDF




SDC에서 제조한 전자 부품 SDC11170은 전자 산업 및 응용 분야에서
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부품번호 SDC11170 기능
기능 Single-Phase Full-Wave Motor Driver
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SDC11170 데이터시트, 핀배열, 회로
Single-phase Full-wave Motor Driver
Datasheet
SDC11170
General Description
SDC11170 is a single-phase full-wave driver for fan motor.
It features a variable speed control method using both
PWM input and thermistor and a high-efficiency driver
architecture. An external filter is introduced to reduce the
vibration and acoustic noise. SDC11170 is ideal for a quiet
and high-efficiency cooler fan.
Applications
CPU cooler fan motor
Features
Single-phase full-wave drive(18V~1.2A output
transistor incorporated)
Triangular wave oscillation voltage and minimum
speed settable
6V , Hall bias and FG output
Kick-back absorption circuit incorporated
Ineffective current reduced during phase shift
Regeneration diodes incorporated with less external
parts
Pin Configuration
SSOP-20
OUT2 1
VM 2
VCC 3
WH 4
WL 5
VTH 6
RMI 7
PWM 8
CPWM 9
FD 10
Figure 1. Pin Configuration
20 PGND
19 OUT1
18 SGND
17 6VREG
16 CT
15 IN-
14 HB
13 IN+
12 FG
11 FO
Pin Number
1
2
3
4
5
6
7
8
9
10
Pin Name
OUT2
VM
VCC
WH
WL
VTH
RMI
PWM
CPWM
FD
Function
Output 2
Motor power
Chip power
Triangular wave oscillation upper voltage
Triangular wave oscillation lower voltage
Thermistor input
Minimum pulse width setting
PWM input
Triangular wave oscillation capacitor
External filter driver
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/10
www.sdc-semi.com




SDC11170 pdf, 반도체, 판매, 대치품
Single-phase Full-wave Motor Driver
Datasheet
SDC11170
Recommend Operating Conditions
Parameter
VCC supply voltage
VM supply voltage
VTHRMIPWMFO input voltage range
Triangular wave input range
HALL input common-phase input voltage range
Symbol Conditions Min Max Unit
V CC
-
4.5 16
V
VM
-
3.5 VCC
V
VTH - 0 6.0 V
V CPWM
-
0.5 4.0
V
V ICM
-
0.2 3.0
V
Table 3. Commended Operating Conditions
Electrical Characteristics (Ta=25°C, VCC=12V, unless otherwise specified)
Parameter
Symbol
Conditions
Min Typ Max Unit
Supply current
HB voltage
6V voltage
CT pin high level voltage
CT pin low 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
Hall input sensitivity
ICC 1
ICC 2
V HB
6V REG
V CTH
V CTL
I CT1
I CT2
R CT
V OL
V OH
V HN
During drive
During lock protection
IHB=-5mA
I 6VREG =-5mA
-
-
-
-
RCD= ICT1/ ICT2
IO=200mA
IO=200 mA, VM=VCC
Including offset and
hysteresis
17 20 23
- 7 10
1.1 1.25 1.4
5.8 6 6.2
3.4 3.6 3.8
1.4 1.6 1.8
1.8 2.2 2.6
0.18 0.22 0.26
8 10 12
- 0.1 0.2
- 0.6 0.8
- ±10 ±20
mA
mA
V
V
V
V
uA
uA
-
V
V
mV
FG output pin L voltage
FG output pin leak current
Over current protection voltage
Overheat protection temperature
V FG
IFG=5mA
- 0.2 0.3 V
IFGL VFG=7V - 30 uA
V OLMAX
-
- 1.5 -
V
TSD *Design guarantee value - 170 - °C
Table 4. Electrical Characteristics
Truth Table
PWM
H
H
L
VTH (RMI)-L: VTH<CPWM or RMI<CPWM
VTHRMI
L
H
X
FD
L
OFF
OFF
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
4/10
www.sdc-semi.com

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SDC11170 전자부품, 판매, 대치품
Single-phase Full-wave Motor Driver
VCC
VM
A
D
OUT2
Datasheet
SDC11170
OUT1
BC
GND
Figure 6.
SDC11170 adapt a new architecture, placing the
protection diode between power supply and VM pin.
With VCC directly connected to power supply, the
voltage drop from power supply to output pin has been
reduced to about 1.1V, and only 0.2V*IOUT contribute to
the IC’s power dissipation. This innovation made a boost
to the IC’s continuous output current, without increasing
the cost of the package.
This architecture is filed under patent pending.
Protections
Lock-shutdown and auto-restart use a capacitor
connecting to CT pin to decide lock detection time and
lock protection time. Charged by a 2.2uA current, the
capacitor will try to reach the voltage of 3.6V and trigger
lock-shutdown. However, a hall phase change will cause
a complete discharge of the capacitor. In normal
operation, the capacitor will be discharged frequently
and the voltage of CT will not reach 1.6V.
If the fan is stopped by force, lock-shutdown will be
triggered when the voltage of CT reaches 3.6V, shut the
lower transistors down to prevent overheating. Then the
capacitor will be discharged by a 0.22uA current, until
the voltage of CT reaches 1.6V and enter restart mode.
During restart, if VM pin voltage is higher than 6V, the FD
pin pulse width will be 0.5 times of the original pulse
width in order to achieve a low temperature rise in lock
condition (shown in the illustration below); if not, the
pulse width will be normal.
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
7/10
www.sdc-semi.com

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SDC11170

Single-Phase Full-Wave Motor Driver

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