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PDF SDC11967 Data sheet ( Hoja de datos )

Número de pieza SDC11967
Descripción Single-Phase Full-Wave Pre-Driver
Fabricantes SDC 
Logotipo SDC Logotipo



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No Preview Available ! SDC11967 Hoja de datos, Descripción, Manual

Single-Phase Full-Wave Pre-Driver For Fan Motor
Datasheet
SDC11967
General Description
The SDC11967 is a single-phase bipolar variable speed fan
motor predriver that works with an external PWM signal.
A highly efficient, quiet and low power consumption
motor driver circuit, with a large variable speed, can be
implemented by adding a small number of external
components.
This device is optimal for driving large scale fan motors
(with large air volume and large current) such as those
used in servers and consumer products.
Features
Pre-driver for single-phase full-wave drive
External PWM input enabling variable speed control
Compatible with 12V, 24V, and 48V power supplies
Reactive current cut circuit incorporated
Minimum speed setting pin
Constant-voltage output pin for Hall bias
RD output
Applications
PWM control variable speed fan motor
Pin Configuration
SSOP-20
OUT2P 1
OUT2N 2
VCC 3
VLIM 4
SENSE 5
RMI 6
VTH 7
CPWM 8
FG 9
RD 10
Figure1. Pin Configuration
20 OUT1P
19 OUT1N
18 VOVER
17 SGND
16 6VREG
15 ROFF
14 CT
13 IN+
12 HB
11 IN-
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/10
www.sdc-semi.com

1 page




SDC11967 pdf
Single-Phase Full-Wave Pre-Driver For Fan Motor
Datasheet
SDC11967
Electrical Characteristics (Ta=25°C, VCC=12V, unless otherwise specified)(Continued)
Parameter
Symbol
Conditions
Min
CT charge/Discharge current ratio
R CT
RCD= ICT1/ ICT2
8
Output- N saturation
VON IO=20mA
4
OUT-P sink current
IOP - 15
Hall input sensitivity
VHN -
RD/FG output pin L voltage
VFG IFG=5mA
-
RD/FG output pin leak current
I FGL
VFG=16V
-
Typ
10
10
20
±10
0.15
-
Max Unit
12 deg
V
mA
±20 mV
0.3 V
30 uA
Table 4. Electrical Characteristics
Truth Table
VTH CPWM
IN-
IN+ Output1P Output 1N Output 2P Output 2N
Mode
LH
HL
LH
L
-
-
H
-
L
H OUT1 to 2 drive
- OUT2 to 1 drive
HL
H L OFF
LH
-
-
H
-
OFF
H
-
During rotation
IN- IN+ CT Output1P Output 1N Output 2P Output 2N FG RD
H LL
L
-
-
H LL
LH
- H L - OFF
H L H OFF
-
-
H L OFF
LH
- H OFF - OFF
Mode
OUT1 to 2 drive
OUT2 to 1 drive
Lock protection
Table 5. Truth Table
Power dissipation curve
Pd(mW80)0
700
600
500
400
300
200
100
0 20 40 60 80 90 100 120 Ta(°C)
Figure 4. Power Dissipation Curve (SSOP-20)
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/10
www.sdc-semi.com

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