AM4967 BCDSEMI | Alldatasheet
Document overview
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Technical content
Features
- Single-phase Full-wave Pre-drive
- Rotation Speed Control via External PWM
- Maximum Operating Current Limit
- Linear Start Function for Reducing Large Current Impulse at the Moment of Turn-on
- Minimum Rotation Speed Setting
- Lock Protection and Auto Start Function
- Rotation Speed Indication
- Over Temperature Protection Application
- CPU and OA (Office Automation) Cooler Fan
- Brushless DC Motor
Figure 1. Package Type of AM4967
Figure 2. Pin Configuration of AM4967
BCD Semiconductor Manufacturing Limited Preliminary Datasheet ADJUSTABLE-SPEED SINGLE-PHASE FULL-WA VE PRE-DRIVER FOR MOTOR AM4967 Jun. 2008 Rev. 1. 1 Pin Number Pin Name Function 1 OUT2 Second channel P-type driver output. Op en-drain output, must be connected with pull-up resistor to drive external power devices in operation 2 OUT2B Second channel N-type driver output. Push-pull output to drive external power devices
3 VCC Power supply
Current limiter indicator. Fixed to 0. 2V internally. Maximum allowable cur- rent is decided by external sample resistance. When the voltage of this pin exceeds 0.2V , the output will be shut down by current limit. If this function is not used, connect this pin to ground directly 5V M I N Minimum speed setting terminal. Connect it to VREF when disused. In case it is tied to other power supply for controlling, an isolated resistor is necessary 6V P W M Speed control terminal. It is full speed mode when connected to ground. If the speed is controlled by PWM mode, th e frequency of control signal is 20kHz to 100kHz. Moreover, a low pass networ k is necessary to transfer PWM to DC level 7C O S C PWM basic oscillation frequency genera tor when connected with a capacitor of 220pF. 30kHz frequency is available. 8F G / R D "FG" means pin 8 is an output pin of FG signal which is used for detecting rotation speed. "RD" means pin 8 is an output pin of RD signal, and is used for detecting fan rotate-st op state. "FG" and "RD" can be selected according to the requirement. This pin need to be connected with pull-up resistor when used. A new pulse will be generated once input signal changed. Keep this pin open when it is not to be used 9H I N - Hall sensor negative input . To prevent noise, this pin is recommended to be placed as close as possible to Hall circuit. If necessary, a capacitor may be added between HIN+ and HIN- to reduce the influence caused by noise 10 HIN+ Hall sensor positiv e input. To avoid noise, this pin is recommended to be placed as close as possible to Hall circuit 11 CT Lock protection and auto start frequency generator. It is connected with an external 0.47µF capacitor which decides lock-rotate time and start time. If lock-rotate protection function is disused, please connect this pin to GND 12 LS Linear start terminal. This pin is connected to VREF externally via a capacitor of 0.47µF to 1µF which enables fan start steadily. Start time is dependent to the capacitance. If linear start function is not used, connect this pin to ground
13 VREF 5V voltage reference
14 GND Ground for circuit control
15 OUT1B First channel N-type driver output. Push-pull output to drive external power devices 16 OUT1 First channel P-type driver output. Open-drain output, must be connected with pull-up resistor to drive external power devices in operation Pin Description
Figure 3. Functional Block Diagram of AM4967
BCD Semiconductor Manufacturing Limited Preliminary Datasheet ADJUSTABLE-SPEED SINGLE-PHASE FULL-WA VE PRE-DRIVER FOR MOTOR AM4967 Jun. 2008 Rev. 1. 1 VPWM, VMIN COSC HIN- HIN+ OUT1 OUT1B OUT2 OUT2B Mode LH H L L L OFF H OUT1 OUT2 (Driver) L H OFF H L L OUT2 OUT1 (Driver) HL HL O F F L O F F H Regenerative LH O F F H O F F L HIN- HIN+ CT OUT1 OUT1B OUT2 OUT2B FG/RD Mode HL L L L OFF H L OUT1 OUT2 (Driver) L H OFF H L L OFF OUT2 OUT1 (Driver) HL H OFF L OFF H L Lock Protection L H OFF H OFF L OFF Truth Table Package Temperature Range Part Number Marking ID Packing TypeLead Free Green Lead Free Green SSOP-16 -30 to 105oC AM4967GS-E1 AM4967GS-G1 AM4967GS AM4967GS-G1 Tube AM4967GSTR-E1 AM4967GSTR-G1 AM 4967GS AM4967GS-G1 Tape & Reel AM4967RGS-E1 AM4967RGS-G1 A M4967RGS AM4967RGS-G1 Tube AM4967RGSTR-E1 AM4967RGSTR-G1 AM4967RGS AM4967RGS-G1 Tape & Reel Circuit Type Package GS: SSOP-16 E1: Lead Free AM4967 - TR: Tape and Reel Blank: Tube
Ordering Information
- Driver-lock. VOSC is High, VPWM, VVMIN and VLS are low. R: RD Blank: FG Pin 8 2. Speed control. VCT, VLS are low. G1: Green BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green package.
ADJUSTABLE-SPEED SINGLE-PHASE FULL-WA VE PRE-DRIVER FOR MOTOR AM4967 Preliminary Datasheet Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited Parameter Symbol Value Unit Supply V oltage V CC 18 V OUT1B/OUT2B Output Current I OUTB 20 mA OUT1/OUT2 Sink Current I OUT 20 mA OUT1B/OUT2B/OUT1/OUT2 Withstand V oltage VOUT 18 V VPWM/VMIN Withstand V oltage V PWM/VVMIN 7V LS Withstand V oltage V LS 7V FG/RD Withstand V oltage V FG/VRD VCC V FG/RD Output Current I FG/IRD 10 mA VREF Output Current I REF 20 mA Power Dissipation (Note 2) P D 800 mW Storage Temperature Range T STG -55 to 150 oC ESD (Human Body Model) ESD 2000 V Note 1: Stresses greater than those li sted under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functiona l operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Note 2: When mounted on the specified printed circuit board (114.3mm×76.1mm×1.6mm, glass epoxy). Parameter Symbol Min Typ Max Unit Supply V oltage V CC 5.5 16 V VPWM/VMIN Input V oltage 0 5 V Hall Input V oltage 0.2 3 V Ambient Temperature T A -30 105 oC Recommended Operating Conditions Absolute Maximum Ratings (Note 1)
BCD Semiconductor Manufacturing Limited Preliminary Datasheet ADJUSTABLE-SPEED SINGLE-PHASE FULL-WA VE PRE-DRIVER FOR MOTOR AM4967 Jun. 2008 Rev. 1. 1 Parameter Symbol Conditions Min Typ Max Unit Quiescent Current IQ1 Lock off 8 10 12 mA IQ2 Lock on 8 10 12 VREF Reference V oltage VREF IOUT=5mA 4.5 5.0 5.5 V Current Limit V oltage VLIM 186 200 215 mV COSC High Level V oltage VOSCH 3.0 3.4 3.8 V COSC Low Level V oltage VOSCL 0.9 1.1 1.3 V COSC Frequency fOSC CL=220pF 25.4 30 35.5 kHz CT High Level V oltage VCTH 2.4 3.3 3.6 V CT Low Level V oltage VCTL 1.0 1.3 1.6 V CT Charge Current ICHG VCT=0.5V 1.5 2 2.5 µA CT Discharge Current IDHG VCT=3.5V 0.13 0.2 0.25 µA CT Charge and Discharge Ratio RCD ICHG/IDHG 8.5 10 14.5 Linear Start Charge Current ILS VLS=1V 0.5 0.7 µA OUT1B/OUT2B High Level V oltage VOBH IOUT=10mA V CC- 1.8 VCC- 0.9 VCC V OUT1B/OUT2B Low Level V oltage VOBL IOUT=10mA 0.9 1.5 V OUT1/OUT2 Low Level V oltage VOL IOUT=10mA 0.45 0.8 V FG Signal Hall Input Sensitivity VHN IHIN+, IHIN- difference voltage (include offset and hysteresis) ±10 mV FG Saturation V oltage VSAT ISINK=5mA 200 500 mV FG Leakage Current ILFG VFG=VCC 30 µA VPWM/VMIN Bias Current IPWMB/IVMINB VOSC=VPWM/VVMIN=2V 0.1 3 µA (VCC=12V , TA=25oC, unless otherwise specified.)
Electrical Characteristics
Figure 8. Power Dissipation vs. Ambient Temperature
- Minimum Speed Setting Mode (Stop Mode)
by VMIN pin voltage. If not, fan motor stops.
- Low Speed to High Speed Setting Mode
voltage becomes lower, output ON duty becomes large. tion-stop state is monitored by RD output. Figure 9. Operating Diagram 1 of AM4967 (Speed Control, Note 3)
Figure 12. Operating Diagram 4 of AM4967 (Note 4)
Figure 13. Typical Application of AM4967 (VCC=12V)
ADJUSTABLE-SPEED SINGLE-PHASE FULL-WA VE PRE-DRIVER FOR MOTOR AM4967 Preliminary Datasheet Jun. 2008 Rev. 1. 1 BCD Semiconductor Manufacturing Limited Mechanical Dimensions SSOP-16 Unit: mm(inch) 3.800(0.150) 4.000(0.157) 0.200(0.008) 0.300(0.012) 0.800(0.031) 0.635(0.025) BSC 0.100(0.004) 0.250(0.010) 1.350(0.053) 1.750(0.069) 0.400(0.016) 1.270(0.050) 4.700(0.185) 5.100(0.201) 5.800(0.228) 6.200(0.244) 0.650(0.026) 0.750(0.030) 0.200(0.008) 0.250(0.010) 1.350(0.053) 1.550(0.061) 0.020(0.001) 0.050(0.002) R0.150(0.006) R0.150(0.006) 0.250(0.010)SEE DETAIL A 7 o 7 o o 8 o 8 o 0.150(0.006) 0.250(0.010) Φ DETAIL A
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi- cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 BCD Semiconductor Manufacturing Limited MAIN SITE REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Tel: +86-755-8826 7951 Fax: +86-755-8826 7865 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808 Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corporation 30920 Huntwood Ave. Hayward, CA 94544, U.S.A Tel : +1-510-324-2988 Fax: +1-510-324-2788 - IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com BCD Semiconductor Manufacturing Limited IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi- cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
800 Yi Shan Road, Shanghai 200233, China
Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 MAIN SITE REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen, 518026, China Tel: +86-755-8826 7951 Fax: +86-755-8826 7865 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808 Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corp. 30920 Huntwood Ave. Hayward, CA 94544, USA Tel : +1-510-324-2988 Fax: +1-510-324-2788 - Headquarters BCD Semiconductor Manufacturing Limited No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China Tel: +86-21-24162266, Fax: +86-21-24162277