AM4962 BCDSEMI | Alldatasheet

Document overview

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Technical content

Features

  • The Motor Speed is Controlled by PWM Pulse Directly
  • Built-in Triangle Wave Circuit Without Extra Oscillation Capacitor
  • Built-in Hall Bias Circuit
  • Built-in Minimal Speed Setup Circuit
  • Slope K* Adjustable
  • Rotation Speed Indication (FG)
  • Rotation or Lock State Indication (RD)
  • Built-in Thermal Shutdown Circuit
  • Lock Protection and Auto-restart
  • Output Current Limit * Slope K is the slope of output PWM duty vs. input PWM duty

Applications

  • CPU Cooler Fan in PC
  • Brushless DC Motor Driver

Figure 1. Package Types of AM4962

Figure 2. Pin Configuration of AM4962 (Top View)

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Pin Description Pin Number HTSSOP-14 SSOP-16 Pin Name Function 1 1 OUT2 Driver output 2

2 NC No connection

3 4 VMIN Minimum duty setting 4 5 PWM PWM pulse Input 5 6 CF PWM filter capacitor 6 7 FG Rotation speed indicator 7 8 RD Rotation/lock state indicator 8 9 HIN+ Hall sensor input + 9 10 HB Hall sensor bias regulator 10 11 HIN- Hall sensor input - 11 12 RADJ Slope K adjustable terminal 12 13 CT Lock and rotation setting capacitor terminal 13 14 GND Ground for control circuit 14 15 OUT1 Driver output 1

16 PGND Power ground

Figure 3. Functional Block Diagram of AM4962

1 H L H L L Rotation

2 L H

3 H L Off L L Rotation Recirculate

4 L H

5 H L H Off L

6 L H

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

Ordering Information

C i r c u i t T y p e G 1 : G r e e n P a c k a g e GH: HTSSOP-14 GS: SSOP-16 Package Temperature Range Part Number Marking ID Packing Type AM4962GH-G1 AM4962GH-G1 Tube HTSSOP-14 AM4962GHTR-G1 AM4962GH-G1 Tape & Reel AM4962GS-G1 AM4962GS-G1 Tube SSOP-16 -30 to 90°C AM4962GSTR-G1 AM4962GS-G1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Blank: Tube TR: Tape & Reel

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Absolute Maximum Ratings (Note 2) Parameter Symbol Value Unit Supply Voltage V CC 18 V Output Current I OUT 1.0 A Output Voltage V OUT 18 V HB Output Current I HB 10 mA RD Output Voltage V RD 18 V FG Output Voltage V FG 18 V RD Output Current I RD 10 mA FG Output Current I FG 10 mA SSOP-16 0.8 W Power Dissipation P D HTSSOP-14 1.1 W Storage Temperature Range T STG -55 to 150 °C SSOP-16 156 Thermal Resistance (Junction to Ambient) θJA HTSSOP-14 114 °C/W ESD (Human Body Model) ESD 2000 V ESD (Machine Model) ESD 250 V Note 2: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Co nditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Typ Max Unit Supply Voltage V CC 3.5 12 16 V Hall Input Voltage + (Note 3) V IN+ 0.2 3 V Hall Input Voltage - (Note 3) V IN- 0.2 3 V PWM High Level Voltage V PWM VCC-1 V Ambient Temperature T A -30 90 °C Note 3: Hall input voltage range includes the amplitude of signal.

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

Electrical Characteristics

(VCC=12V, TA=25°C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit IQ1 V CT=0 10.18 15 18.76 Quiescent Current IQ2 V CT=5V 5.38 8 10.55 mA Output Saturation Voltage at High Side VSATH I SOURCE=200mA 1.0 1.17 V Output Saturation Voltage at Low Side VSATL I SINK=200mA 0.2 0.3 V CPWM Frequency f OSC 18 25 32 kHz CF High Level Voltage V CFH V PWM=0 3.2 3.6 3.75 V CF Low Level Voltage V CFL V PWM=5 1.83 1.95 2.15 V VMIN Voltage V MIN 3.4 3.7 4.0 V RADJ Pin V oltage V ADJ VPWM=0 3.6 3.8 4.4 V Hall Input Hysteresis V HYS ±10 ±20 mV Hall Bias Voltage V HB I HB=5mA 1.1 1.25 1.4 V CT High Level Voltage V CTH 3.55 3.7 3.88 V CT Low Level Voltage V CTL 1.55 1.7 1.85 V CT Charge Current I CHG 1.5 2 2.85 µA CT Discharge Current I DHG 0.14 0.2 0.285 µA CT Charge and Discharge Ratio R CD I CHG/IDHG 8.5 10 14.5 FG Output Low Level Voltage V FGL I FG=5mA 0.2 0.3 V FG Leakage Current I LFG V FG=12V 30 µA RD Output Low Level Voltage V RDL I RD=5mA 0.2 0.3 V RD Leakage Current I LRD V RD=12V 30 µA

Figure 8. Power Dissipation vs. Ambient Temperature

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Operating Diagram F i g u r e 9 . Operating Diagram of AM4962

Note: D2 and D3 are recommended to be used when the current in coil L1 is higher than 300mA. Figure 11. Typical Applications of AM4962

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 390K 560K 820K 1M 2.2M 4.7M 8.2M 100Minimum Duty Cycle (%) R5 (Ω) R1, R2, R3, R4, R6 open 0 1 02 03 04 05 06 07 08 09 0 1 0 0 100 R6=100k, R1, R2, R3, R4, R5 Open R6=270k, R1, R2, R3, R4, R5 Open R1, R2, R3, R4, R5, R6 Open Output Duty Cycle (%) Input PWM Duty Cycle (%) 0 1 02 03 04 05 06 07 08 09 0 1 0 0 100 R5=270k, R1, R2, R3, R4, R6 Open R5=560k, R1, R2, R3, R4, R6 Open R1, R2, R3, R4, R5, R6 Open Output Duty Cycle (%) Input PWM Duty Cycle (%) Typical Application (Note 4, Continued) Note 4 (Refer to application circuit 2 unless otherwise noted.): Adjust slope K of output PWM's duty vs. input PWM's duty 1. The default K is about 0.8 (application circuit 1). 2. Adding R5 can increase K (see Figure 12). 3. Adding R6 can decrease K (see Figure 13). F i g u r e 1 2 F i g u r e 1 3 Adjust minimum duty of output PWM: 1. The default minimum duty of output PWM is about 20% (application circuit 1, Figure 10). 2. Decreasing R2 can increase minimu m output PWM duty (see Figure 14). 3. Adding R5 can decrease minimum output PWM duty (see Figure 15). F i g u r e 1 4 F i g u r e 1 5 Minimum Duty Cycle (%) R2 (Ω) R1=15k,R3,R4,R5,R6 open 3.5k

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 0 1 02 03 04 05 06 07 08 09 0 1 0 0 100 R3=390k, R1, R2, R4, R5, R6 Open R3=1M, R1, R2, R4, R5, R6 Open R1, R2, R3, R4, R5, R6 Open Output Duty Cycle (%) PWM (%) 0 1 02 03 04 05 06 07 08 09 0 1 0 0 100 R4=150k, R1, R2, R3, R4, R6 Open R4=390k, R1, R2, R3, R5, R6 Open R1, R2, R3, R4, R5, R6 Open Output Duty Cycle (%) PWM (%) Typical Application (Note 4, Continued) Adjust maximum duty of output PWM: 1. The default maximum output PWM duty is 100% (application circuit 1). 2. Adding R3 can decrease maximum output PWM duty (see Figure 16). 3. Adding R4 can increase maximum output PWM duty (see Figure 17). F i g u r e 1 6 F i g u r e 1 7

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Mechanical Dimensions 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) 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. 169) 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 Note: Eject hole, oriented hole and mold mark is optional. 0.100(0.004) 0.150(0.006) 0.100(0.004) 0.190(0.007) BASE METAL

SINGLE PHASE FULL WA VE DIRECT PWM MOTOR DRIVER AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Mechanical Dimensions (Continued) SSOP-16 Unit: mm(inch) o o o o o o Φ

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 Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen, 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