Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER General Description Features The AM4962 is a full wave driver IC with direct PWM control function. It is used for single phase motor and is capable of speed control by PWM pulse. • The AM4962 is available in HTSSOP-14 and SSOP-16 packages. • • • • • • • • • AM4962 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 • • HTSSOP-14 CPU Cooler Fan in PC Brushless DC Motor Driver SSOP-16 Figure 1. Package Types of AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 1 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Pin Configuration GH Package (HTSSOP-14) PGND PGND OUT2 1 14 OUT1 VCC 2 13 GND VMIN 3 12 CT PWM 4 11 RADJ CF 5 10 HIN- FG 6 9 HB RD 7 8 HIN+ GS Package (SSOP-16) OUT2 1 16 PGND NC 2 15 OUT1 VCC 3 14 GND VMIN 4 13 CT PWM 5 12 RADJ CF 6 11 HIN- FG 7 10 HB RD 8 9 HIN+ Figure 2. Pin Configuration of AM4962 (Top View) Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 2 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Pin Description Pin Number HTSSOP-14 SSOP-16 1 Pin Name Function 1 OUT2 Driver output 2 2 NC No connection 2 3 VCC Power supply 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+ 9 10 HB 10 11 HIN- Hall sensor input - 11 12 RADJ Slope K adjustable terminal 12 13 CT 13 14 GND Ground for control circuit 14 15 OUT1 Driver output 1 16 PGND Power ground Apr. 2011 Hall sensor input + Hall sensor bias regulator Lock and rotation setting capacitor terminal Rev. 1. 2 BCD Semiconductor Manufacturing Limited 3 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Functional Block Diagram V+ VMIN 6 (7) V+ V+ 51k 11 (12) 7 (8) 93k 90k 4 (5) 56k 18k 54k CF HB RD Predriver V+ PWM FG 3 (4) 42k RADJ Thermal Shutdown Triangle Wave 104k 2 (3) 5 (6) VCC Control Circuit 9 (10) Hall Bias 1 (1) OUT2 8 (9) HIN+ 10 (11) HIN- Lock Shutdown and Auto Restart Hysteresis Amp 12 (13) 14 (15) CT OUT1 (16) 13 (14) GND PGND A (B) A HTSSOP-14 B SSOP-16 Figure 3. Functional Block Diagram of AM4962 Truth Table (Note 1) Items IN- IN+ 1 H L 2 L H 3 H L 4 L H 5 H L 6 L H CF CT OUT1 OUT2 FG Mode H L L Rotation L H Off PWM off Off L L L Off Off Rotation Recirculate PWM off H Off L Off H Off L L H L H Lock Protection Note 1: VCF(H)=5V, VCF(L) =1V, VCT(H)=5V, VCT(L) =0 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 4 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Ordering Information AM4962 Package - Circuit Type G1: Green Package GH: HTSSOP-14 GS: SSOP-16 Blank: Tube TR: Tape & Reel Temperature Range Part Number Marking ID Packing Type AM4962GH-G1 AM4962GH-G1 Tube AM4962GHTR-G1 AM4962GH-G1 Tape & Reel AM4962GS-G1 AM4962GS-G1 Tube AM4962GSTR-G1 AM4962GS-G1 Tape & Reel HTSSOP-14 -30 to 90°C SSOP-16 BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 5 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Absolute Maximum Ratings (Note 2) Parameter Symbol Value Unit Supply Voltage VCC 18 V Output Current IOUT 1.0 A Output Voltage VOUT 18 V HB Output Current IHB 10 mA RD Output Voltage VRD 18 V FG Output Voltage VFG 18 V RD Output Current IRD 10 mA FG Output Current IFG 10 mA Power Dissipation PD Storage Temperature Range TSTG Thermal Resistance (Junction to Ambient) θJA SSOP-16 0.8 W HTSSOP-14 1.1 W -55 to 150 °C SSOP-16 156 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 Conditions” 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 VCC 3.5 12 16 V Hall Input Voltage + (Note 3) VIN+ 0.2 3 V Hall Input Voltage - (Note 3) VIN- 0.2 3 V VCC-1 V 90 °C PWM High Level Voltage Ambient Temperature VPWM TA -30 Note 3: Hall input voltage range includes the amplitude of signal. Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 6 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Electrical Characteristics (VCC=12V, TA=25°C, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max IQ1 VCT=0 10.18 15 18.76 IQ2 VCT=5V 5.38 8 10.55 Quiescent Current Unit mA Output Saturation Voltage at High Side VSATH ISOURCE=200mA 1.0 1.17 V Output Saturation Voltage at Low Side VSATL ISINK=200mA 0.2 0.3 V 18 25 32 kHz CPWM Frequency fOSC CF High Level Voltage VCFH VPWM=0 3.2 3.6 3.75 V CF Low Level Voltage VCFL VPWM=5 1.83 1.95 2.15 V VMIN Voltage VMIN 3.4 3.7 4.0 V RADJ Pin Voltage VADJ 3.6 3.8 4.4 V Hall Input Hysteresis VHYS ±10 ±20 mV Hall Bias Voltage VHB 1.1 1.25 1.4 V CT High Level Voltage VCTH 3.55 3.7 3.88 V CT Low Level Voltage VCTL 1.55 1.7 1.85 V CT Charge Current ICHG 1.5 2 2.85 µA CT Discharge Current IDHG 0.14 0.2 0.285 µA CT Charge and Discharge Ratio RCD ICHG/IDHG 8.5 10 14.5 FG Output Low Level Voltage VFGL IFG=5mA 0.2 0.3 V FG Leakage Current ILFG VFG=12V 30 µA RD Output Low Level Voltage VRDL IRD=5mA 0.3 V RD Leakage Current ILRD VRD=12V 30 µA Apr. 2011 VPWM=0 IHB=5mA Rev. 1. 2 0.2 BCD Semiconductor Manufacturing Limited 7 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 20 20 16 16 Quiescent Current (mA) Quiescent Current (mA) Typical Performance Characteristics 12 8 VCC=12V 4 12 8 o TA=25 C 4 IQ1(VCT=L) IQ1(VCT=L) IQ2(VCT=H) IQ2(VCT=H) 0 -50 -25 0 25 50 75 100 0 125 4 6 8 O Ambient Temperature ( C) Figure 4. Quiescent Current vs. Ambient Temperature 12 14 16 18 Figure 5. Quiescent Current vs. Supply Voltage 1.2 2.0 o VCC=12V, TA=25 C Allowable Power Dissipation (W) VSATH1 Output Saturation Voltage (V) 10 Supply Voltage (V) VSATH2 1.6 VSATL1 VSATL2 1.2 0.8 0.4 Package: HTSSOP-14 1.0 0.8 0.6 0.4 0.2 0.0 0 100 200 300 400 500 600 700 800 900 0.0 1000 -20 20 40 60 80 90 100 Ambient Temperature ( C) Figure 6. Output Saturation Voltage vs. Output Current Apr. 2011 0 O Output Current (mA) Figure 7. Power Dissipation vs. Ambient Temperature Rev. 1. 2 BCD Semiconductor Manufacturing Limited 8 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Typical Performance Characteristics (Continued) Allowed Power Dissipation (W) 1.2 Package: SSOP-16 1.0 0.8 0.6 0.4 0.2 0.0 -20 0 20 40 60 80 90 100 120 O Ambient Temperature ( C) Figure 8. Power Dissipation vs. Ambient Temperature Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 9 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Operating Diagram Figure 9. Operating Diagram of AM4962 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 10 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Typical Application (Note 4) L1 100 Max. Duty Cycle AM4962 VCC D1 V+ 2 (3) 3 (4) C1 1μF 4 (5) 5 (6) C3 1μF OUT2 VCC VMIN PWM OUT1 GND 14 (15) 80 Output Duty Cycle (%) 1 (1) 13 (14) 12 (13) CT RADJ 11 (12) 10 (11) CF HIN- 6 (7) FG HB 7 (8) RD PGND HIN+ 9 (10) Hall C2 0.47μF 8 (9) 60 40 Slope K 20 Min. Duty Cycle 0 0 10 20 30 40 50 60 70 80 90 Input PWM Duty Cycle (%) Figure 10 Application 1 (Default) VCC D1 L1 V+ D2 D3 AM4962 1 (1) C1 1 F 2 (3) R1 3 (4) 4 (5) R2 C3 1 F R3 5 (6) R4 OUT2 OUT1 VCC GND VMIN CT PWM RADJ CF HIN- 6 (7) FG HB 7 (8) RD PGND HIN+ 14 (15) V+ 13 (14) 12 (13) R5 11 (12) 10 (11) 9 (10) R6 Hall 8 (9) C2 0.47 F Application 2 (Slope K and Minimum/Maximum Duty Adjustable) 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 Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 11 100 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 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). 100 100 R5=270k, R1, R2, R3, R4, R6 Open R5=560k, R1, R2, R3, R4, R6 Open R1, R2, R3, R4, R5, R6 Open 80 Output Duty Cycle (%) Output Duty Cycle (%) 80 60 40 20 0 60 40 R6=100k, R1, R2, R3, R4, R5 Open R6=270k, R1, R2, R3, R4, R5 Open R1, R2, R3, R4, R5, R6 Open 20 0 10 20 30 40 50 60 70 80 90 0 100 0 10 20 Input PWM Duty Cycle (%) 30 40 50 60 70 80 90 100 Input PWM Duty Cycle (%) Figure 12 Figure 13 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 minimum output PWM duty (see Figure 14). 3. Adding R5 can decrease minimum output PWM duty (see Figure 15). 100 80 Minimum Duty Cycle (%) Minimum Duty Cycle (%) R1, R2, R3, R4, R6 open R1=15k,R3,R4,R5,R6 open 70 60 50 40 30 80 60 40 20 20 0 10 3.5k 4.0k 4.5k 5.0k 5.5k 6.0k 390K 6.5k Figure 14 Apr. 2011 560K 820K 1M 2.2M 4.7M 8.2M R5 (Ω) R2 (Ω) Figure 15 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 12 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 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). 100 100 R3=390k, R1, R2, R4, R5, R6 Open R3=1M, R1, R2, R4, R5, R6 Open R1, R2, R3, R4, R5, R6 Open 80 Output Duty Cycle (%) Output Duty Cycle (%) 80 60 40 40 R4=150k, R1, R2, R3, R4, R6 Open R4=390k, R1, R2, R3, R5, R6 Open R1, R2, R3, R4, R5, R6 Open 20 20 0 60 0 10 20 30 40 50 60 70 80 90 0 100 Figure 16 Apr. 2011 0 10 20 30 40 50 60 70 80 90 100 PWM (%) PWM (%) Figure 17 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 13 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Mechanical Dimensions HTSSOP-14 Unit: mm(inch) 1. 470(0. 058) 1. 570(0. 062) 6. 350(0. 250) 6. 550(0. 258) 1. 450(0. 057) 1. 550(0. 061) 6. 200(0. 244) 6. 600(0. 260) 4. 300(0. 169) 4. 500(0. 177) SEE DETAIL A 0. 750(0. 030) 0. 850(0. 033) 0.200(0.008) or 1.480(0.058) 0.280(0.011) or 1.610(0.063) 0.100(0.004) 0.190(0.007) 0. 650(0. 026) BSC 1. 300(0. 051) BSC 1. 200(0. 047) MAX 0. 340(0. 013) 0. 540(0. 021) 0. 200(0. 008) MIN 10 14 R0. 090(0. 004) MIN BASE METAL 0.100(0.004) 0.150(0.006) 0.200(0.008) or 1.470(0.058) 0.240(0.009) or 1.570(0.062) R0. 090(0. 004) MIN 0. 250(0. 010) BSC 0.050(0. 002) 0.200(0. 008) 0 8 0. 450(0. 018) 0. 750(0. 030) 0.900(0. 035) 1.050(0. 041) 1. 000(0. 039) REF DETAIL A Note: Eject hole, oriented hole and mold mark is optional. Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 14 Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962 Mechanical Dimensions (Continued) SSOP-16 Unit: mm(inch) o o Φ o o o o Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited 15 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. 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