AM4961 BCDSEMI | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 16

Technical content

Features

  • Built-in Hall Bias Circuit
  • Built-in PWM Speed Control Circuit
  • Built-in Minimal Speed Setup Circuit
  • Rotation Speed Indication (FG)
  • Rotation or Lock State Indication (RD)
  • Built-in Thermal Shutdown Circuit
  • Lock Protection
  • Output Current Limit Application
  • CPU Cooler Fan in PC
  • Brushless DC Motor Driver

Figure 1. Package Types of AM4961

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Data Sheet Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited G Package (TSSOP-20(EDP)) Pin Configuration PGND PGND PGND OUT2 VCC VMIN VPWM COSC FG RD GND CT VREF HIN- HB HIN+ OUT1 PGND PGND PGND

Figure 2. Pin Configuration of AM4961 (Top View)

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Data Sheet Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited Pin Number Pin Name Function TSSOP-20(EDP) HTSSOP-14

1 PGND Power ground

2 PGND Power ground

3 PGND Power ground

6 3 VMIN Minimum duty setting 7 4 VPWM Adjustable Input 8 5 COSC Oscillator capacitor 9 6 FG Rotation speed indicator 10 7 RD Rotation/lock state indicator 11 8 HIN+ Hall sensor input + 12 9 HB Hall sensor bias regulator 13 10 HIN- Hall sensor input - 14 11 VREF Reference voltage regulator 15 12 CT Lock and rotation se tting capacitor terminal 16 13 GND Ground for control circuit 17 14 OUT1 Driver output 1

18 PGND Power ground

19 PGND Power ground

20 PGND Power ground

Figure 3. Functional Block Diagram of AM4961

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Data Sheet Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited HIN- HIN+ COSC (Note 1) CT OUT1 OUT2 FG RD Mode HL H L HLL L Rotation (Drive) LH LH O F F HL L OFF L L Rotation (Recirculate) LH L O F F O F F HL H H HO F FL OFF Lock Protection L H OFF H OFF HL L OFF OFF L L H OFF OFF OFF Truth Table Note 1: VOSC (H) >VPWM, VOSC (L) <VPWM. Package Temperature Range Part Number Marking ID Packing TypeLead Free Green Lead Free Green TSSOP-20 (EDP) -30 to 105oC AM4961G-E1 AM4961G-G1 AM4961G AM4961G-G1 Tube AM4961GTR-E1 AM4961GTR-G1 AM4961G AM4961G-G1 Tape & Reel HTSSOP-14 -30 to 90oC AM4961GH-E1 AM4961GH-G1 AM4961GH AM4961GH-G1 Tube AM4961GHTR-E1 AM4961GHTR-G1 AM4961GH AM4961GH-G1 Tape & Reel Circuit Type Package G: TSSOP-20(EDP) E1: Lead Free AM4961 - TR: Tape and Reel Blank: Tube

Ordering Information

GH: HTSSOP-14 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 packages.

Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Parameter Symbol Value Unit Supply V oltage V CC 18 V Output Current I OUT 1.2 A Output V oltage V OUT 18 V HB Output Current I HB 10 mA VPWM Input V oltage V PWM 6V RD Output V oltage V RD 18 V FG Output V oltage V FG 18 V RD Output Current I RD 10 mA FG Output Current I FG 10 mA Power Dissipation (Note 3) P D TSSOP-20(EDP) 1.5 W HTSSOP-14 1.1 W Storage Temperature Range T STG -55 to 150 oC ESD (Human Body Model) ESD 2000 V ESD (Machine Model) ESD 250 V Note 2: Stresses greater than those li sted under "Absolute Maximu m Ratings" may cause permanen t 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 3: TA=25oC, no external heatsink. Parameter Symbol Min Typ Max Unit Supply V oltage V CC 3.5 12 16 V Hall Input V oltage + (Note 4) V IN+ 0.2 3 V Hall Input V oltage - (Note 4) V IN- 0.2 3 V Ambient Temperature (Note 5) T A -30 105 oC Recommended Operating Conditions Absolute Maximum Ratings (Note 2) Note 4: Hall input voltage range includes the amplitude of signal. Note 5: For TSSOP-20(EDP) package only. External heatsink shall larger than 15.24mm*3.81mm to ensure the IC is available at TA=105oC.

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Data Sheet Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited Parameter Symbol Conditions Min Typ Max Unit Quiescent Current IQ1 Lock off 11.24 15 18.76 mA IQ2 Lock on 6.25 8 10.55 VREF V oltage VREF IREF=5mA 5.8 6 6.2 V Output Saturation V oltage at High Side VSATH ISOURCE=200mA 1.0 1.17 V Output Saturation V oltage at Low Side V SATL ISINK=200mA 0.2 0.3 V COSC Frequency fOSC COSC=100pF 18 25 32 KHz COSC High Level V oltage VOSCH 3.45 3.6 3.75 V COSC Low Level V oltage VOSCL 1.83 1.95 2.07 V Hall Input Hysteresis VHYS ±10 ±20 mV Hall Bias V oltage VHB IHB=5mA 1.1 1.25 1.4 V CT High Level V oltage VCTH 3.55 3.7 3.88 V CT Low Level V oltage VCTL 1.55 1.7 1.85 V CT Charge Current ICHG 1.5 2 2.55 µA CT Discharge Current IDHG 0.14 0.2 0.255 µA CT Charge and Discharge Ratio RCD ICHG/IDHG 8.5 10 14.5 FG Output Low Level V oltage VFGL IFG=5mA 0.2 0.3 V FG Leakage Current ILFG VFG=12V 30 µA RD Output Low Level V oltage VRDL IRD=5mA 0.2 0.3 V RD Leakage Current ILRD VRD=12V 30 µA (VCC=12V , TA=25oC, unless otherwise specified.)

Electrical Characteristics

Figure 8. Power Dissipation vs. Ambient Temperature Figure 9. Power Dissipation vs. Ambient Temperature

oscillating voltage and VMIN pin voltage. VPWM voltage is decided by variation of PWM duty.

  1. Variable Speed Setting Mode

and motor speed becomes lower. Vice versa. Figure 10. Operating Diagram of AM4961 (Note 6)

Figure 11. Typical Application of AM4961 (Note 7)

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Data Sheet Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited Typical Application (Continued) Note 7: *1. Ground Line Layout PGND is connected to motor supply stage and GND is connected to control stage. All ground lines from control stage are connected to GND. *2. Stability of Power Supply C1 is employed to stabilize V CC. Its capacitance is no less than 1µF. *3. Hall Input To avoid noise, the shortest line is recommended to con- nect with Hall stage whic h has about 20mV hysteresis. Thus, the ideal Hall input is 50mV or over. *4. COSC Capacitor When C CP is 100pF, the COSC frequency will be 25kHz. *5. FG Output FG output terminal is open collector output which varies with phase change. *6. RD Output RD output terminal is open co llector output. It is low at rotation mode and high when stopped. *7. HB Pin This pin is available to output a 1.25V Hall bias voltage. *8. VMIN Pin If this pin is disused, connect it directly with VPWM, the minimum duty cycle will be 10%. *9. Exposed Pad (For TSSOP-20(EDP) package only) There is an exposed pad at the bottom of IC. If operating current is high, it is reco mmended to solder external heatsink closely with this pa d by tin to ensure better tem- perature characteristics. EXPOSED PAD

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Data Sheet Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited Mechanical Dimensions TSSOP-20(EDP) Unit: mm(inch) 0.650(0.026)TYP 6.200(0.244) 6.600(0.260) #1 PIN 6.400(0.252) 6.600(0.260) INDEX0.750(0.030) 0.100(0.004) 2.900(0.114) 3.100(0.122) 4.100(0.161) 4.300(0.169) 0.200(0.008) 0.280(0.011) 0.050(0.002) 0.150(0.006) 0.900(0.035) 1.050(0.041) 1.200(0.047) MAX 0.340(0.013) 0.540(0.021) 10¢ 14¢ 0.250(0.010)TYP 0.450(0.018) REF R0.090(0.004)MIN R0.090(0.004)MIN TOP & BOTTOM 0.200(0.008)MIN 4.300(0.169) 4.500(0.177) 0.100(0.004) 0.190(0.007) EXPOSED PAD

Jun. 2008 Rev. 2. 2 BCD Semiconductor Manufacturing Limited SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4961 Mechanical Dimensions (Continued) HTSSOP-14 Unit: mm(inch) 6.350(0.250) 6.550(0.258) 1.470(0.058) 1.570(0.062) 1.450(0.057) 1.550(0.061) 0.750(0.030) 0.850(0.033) 0.650(0.026) BSC 1.300(0.051) BSC 6.200(0.244) 6.600(0.260) 0.340(0.013) 0.540(0.021) 1.200(0.047) MAX 0.050(0.002) 0.200(0.008) 0.900(0.035) 1.050(0.041) 4.300(0.160) 4.500(0.177) SEE DETAIL A 0.250(0.010) BSC R0.090(0.004) MIN R0.090(0.004) MIN 0.200(0.008) MIN 0.450(0.018) 0.750(0.030) 1.000(0.039) REF DETAIL A ȡ ȡ

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