AM9800GSTR-G1

PART OBSOLETE – NO ALTERNATE PART Data Sheet OBSOLETE – PART DISCONTINUED Three Phase Direct PWM Sensorless Motor Driver General Description Features The AM9800 is a direct PWM driver IC designed for three-phase brushless motors. Also, by using highly silent PWM drive, switching current of the phase with a smooth slope reduces the sound of slewing motor, and makes high-efficiency drive a reality by a synchronous commutation. • • • • • • • • • • The device is build-in lock protection. When the fan is locked, the device will enter the lockup protection mode. It is also equipped with thermal shutdown function and forward or reverse rotation selection. In normal operation, supply current is less than 2mA, but in PWM=0 mode it is just around 20µA. The AM9800 is available in SSOP-16 package. AM9800 Speed Controllable by PWM Input Signal Sensorless Drive Soft Switched Drive Build-in Forward/Reverse Switching Circuit Power Saving Function in a Stopped State: 2mA and PWM=0 State: 20µA Build-in Current Limiter Circuit Build-in Lock Protection and Auto-restart Built-in Over Current Protection Built-in Thermal Shutdown Circuit ESD Rating: 4000V (Human Body Model) 300V (Machine Model) Applications • CPU Cooler Computers Fan in Notebook Personal SSOP-16 Figure 1. Package Type of AM9800 May 2019 Rev. 2 - 4 BCD Semiconductor Manufacturing Limited 1 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Pin Configuration GS Package (SSOP-16) 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 Figure 2. Pin Configuration of AM9800 (Top View) Pin Description Pin Number Pin Name Function 1 VO Output pin (V), connected to the motor coil 2 UO Output pin (U), connected to the motor coil 3 VCC Supply voltage 4 COM Motor middle-point connection 5 COMIN Motor position detection comparator filter pin 1 6 FIL Motor position detection comparator filter pin 2 7 OSC OSC startup frequency setting 8 SGND 9 F/R Rotation direction switching 10 FG FG pulse output 11 PWM 12 VG Charge pump step-up output 13 CP Charge pump step-up pulse output pin 14 CPC Charge pump step-up pin 15 RF Output current detection 16 WO Output pin (W), connected to the motor coil Ground for IC PWM signal input May 2019 Rev. 2 - 4 BCD Semiconductor Manufacturing Limited 2 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Functional Block Diagram Figure 3. Functional Block Diagram of AM9800 May 2019 Rev. 2 - 4 BCD Semiconductor Manufacturing Limited 3 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Ordering Information AM9800 - G1: Green Circuit Type TR: Tape & Reel Blank: Tube Package GS: SSOP-16 Package Temperature Range SSOP-16 -30 to 95°C Part Number Marking ID Packing Type AM9800GS-G1 AM9800GS-G1 Tube AM9800GSTR-G1 AM9800GS-G1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Absolute Maximum Ratings (TA=25°C, Note 1) Parameter Symbol Value Unit Supply Voltage VCC 6.5 V Pre-drive Voltage (Gate Voltage) VG 10 V Output Current IOUT 0.7 A PWM Input Withstand Voltage VPWM VCC V FG Output Withstand Voltage VFG 6 V FG Output Current IFG 5 mA Power Dissipation1 (Independent IC) PD1 0.3 W Power Dissipation2 (Note 2) PD2 0.8 W Ambient Temperature (Note 3) TA -40 to 105 °C TSTG -55 to 150 °C ESD (Human Body Model) 4000 V ESD (Machine Model) 300 V Storage Temperature Note 1: 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. Note 2: When mounted on 76.1mm×114.3mm×1.6mm glass epoxy board. Note 3: TJ=150°C. Use the IC in the range where the temperature of the chip does not exceed TJ=150°C during operation. May 2019 Rev. 2 - 4 BCD Semiconductor Manufacturing Limited 4 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Recommended Operating Conditions (TA=25°C) Parameter Symbol Min Max Unit Supply Voltage VCC 2.2 6 V Operating Temperature TOP -30 95 °C Electrical Characteristics VCC =5V, TA=25°C, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit Supply Current 1 ICC1 VPWM=VCC 2 2.5 mA Supply Current 2 ICC2 VPWM=0V 20 50 µA VG Output Voltage VG 9.7 V Upper Transistor Resistance RONH IOUT=0.5A 1 1.5 Ω Lower Transistor Resistance RONL IOUT=0.5A 1 1.5 Ω Upper & Lower Transistor Resistance Total RON(H+L) IOUT=0.5A 2 3 Ω OSC Frequency fOSC PWM Pin High-level Input Voltage PWM Pin Low-level Input Voltage 1.0 COSC=2200pF kHz VPWMH VCC×0.8 VCC V VPWML 0 VCC×0.2 V PWM Pin Input Current IPWM PWM Input Frequency fPWM FG Low Level Voltage VFG IFG=0.5mA RF Limiter Voltage VRF RF=0.5Ω Lock Detection ON Time tON 2 s Lock Detection OFF Time tOFF 4 s TSD 175 °C ∆TSD 25 °C Thermal Temperature Temperature Width Protection Hysteresis VPWM=0V -50 -20 20 25 µA 50 0.2 0.225 May 2019 Rev. 2 - 4 0.25 kHz V 0.275 V BCD Semiconductor Manufacturing Limited 5 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 25 2.5 o o T =25 C T =25 C A A V =VCC V 20 PWM Supply Current (µA) Supply Current (mA) 2.0 1.5 1.0 0.5 PWM =0V 15 10 5 0.0 0 0 1 2 3 4 5 0 6 1 2 3 4 5 6 Supply Voltage (V) Supply Voltage (V) Figure 4. Supply Current vs. Supply Voltage Figure 5. Supply Current vs. Supply Voltage 1000 700 o V =5V, T =25 C CC A V 500 V Power Dissipation (mW) 600 Saturation Voltage (mV) OBSOLETE – PART DISCONTINUED Typical Performance Characteristics SAT-UP SAT-DOWN 400 300 200 800 600 400 200 100 0 0 0 100 200 300 400 500 600 -40 -20 0 20 40 60 80 100 Ambient Temperature ( C) o Output Current (mA) Figure 6. Saturation Voltage vs. Output Current Figure 7. Power Dissipation vs. Temperature (Note 2) May 2019 Rev. 2 - 4 BCD Semiconductor Manufacturing Limited 6 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Typical Application 1 WO VO RF 2 UO 3 4 1 F 5 CPC 6 7 RF 0.5 14 13 1.1 F CP COM 0.1 F COMIN FIL OSC FG 10 9 SGND PWM 12 PWM 11 2200pF 8 15 VCC VG 1000pF 16 PWM Control Signal f=20k to 50kHz RFG VFG 10k F/R FG Output Figure 8. Typical Application of AM9800 May 2019 Rev. 2 - 4 BCD Semiconductor Manufacturing Limited 7 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Application Information 1. Reverse Connection of Power Supply Connector VUO 5V/div Reverse connection of power supply connector may break IC. Some methods such as inserting a diode between power supply and VCC terminal can be taken to avoid the reverse connection destruction. VVO 5V/div VWO 5V/div IWO 100mA/div 2. Power Supply Line Time 1s/div Back electromotive force (EMF) causes regenerated current to the power supply line, so insert a capacitor (recommended value: 1µF or larger) as close as possible to the space between the power supply pin (VCC pin) and ground pin (SGND pin) for routing regenerated current. Figure 9. OTP Function 6. F/R Function A high level input causes the current to flow into the motor in the order of U, V, and W and a low level input in the order of U, W, and V. When the motor is used with the F/R pin open, the built-in resistor enables the F/R pin to GND. Changing the order of current application turns the motor to rotate in the opposite direction. Switching H/L of F/R (pin 9) terminal should not be done during the motor rotation. It should be done once the motor stops. F/R terminal should be connected to VCC or GND for reducing PWM noise. Figure 10 shows a rotating fan’s waveform at forward mode (F/R pin is connected to SGND pin). 3. GND Potential and External Components Ensure that the potential of GND terminal is the minimum potential in any operating condition. External components connected to the ground must be connected with lines that are as short as possible and external components connected between IC pins must be placed as close to the pins as possible. 4. Mounting Failures In the process of attaching IC to the printed board, more attention must be paid to the direction and location of the IC, since mounting failures may also break IC. In addition, destruction is also possible when the circuit is shorted by foreign substance between outputs or between output and power supply or between output and GND. VUO 5V/div VVO 5V/div VWO 5V/div IWO 200mA/div 5. Thermal Shutdown Circuit Considering the power dissipation under actual operating condition, the thermal design must be applied with sufficient margin. Time 1ms/div Figure 10. Rotation Mode Waveform (Forward Mode) 7. PWM Mode AM9800 features thermal shutdown (TSD) circuit (protection temperature is 175°C typical and hysteresis width is 25°C typical). When the chip temperature reaches the TSD circuit temperature, the output terminal becomes an open state. TSD circuit is designed simply for the purpose of intercepting IC from overheating. Make sure that the IC should not be used again after this circuit operating. Figure 9 shows a fan rotates normally first and then enter into OTP mode since the chip temperature reaches 175°C. Finally the chip temperature decreases below 150°C, then OTP mode is canceled and the fan rotates normally again. The output transistor is on when a high-level voltage is input to the PWM pin (pin 11), and is off when a low-level voltage is input. PWM controls the speed of the motor by inputting the pulse in accordance with the duty cycle to the PWM pin. When the motor is operated with the PWM pin open, the built-in resistor enables the PWM pin to change to high-level voltage and the motor speed rises to full speed. When the PWM pin is fixed at low-level voltage, the motor decelerates, and after the motor stops, it enters “Power Saving Mode”. Figure 11 shows a rotating fan’s waveform at PWM Mode. May 2019 Rev. 2 - 4 BCD Semiconductor Manufacturing Limited 8 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Application Information (Continued) 11．Position Detector Comparator Circuit for Rotor VUO 5V/div The position detector comparator circuit for the rotor is a comparator for detecting rotor positional information with the back EMF signal generated when the motor rotates. The IC determines the timing at which the output block applies current to the motor based on the position information obtained here. A capacitor (between 1000 and 10000pF) must be connected between COMIN pin (pin 5) and the FIL pin (pin 6) to prevent any motor startup misoperation that is caused by the comparator input noise. VVO 5V/div VWO 5V/div -IWO 100mA/div Time 5ms/div Figure 11. Rotation Mode Waveform (PWM Mode) (f=25kHz, VH=5V, VL=0V, Duty Cycle=50%) 8. Soft Switching Circuit 12．FG Output Circuit AM9800 adopts variable duty soft switching to minimize the motor drive noise. Figure 12 shows how soft switching circuit works during the fan rotation. FG output pin (pin 10) provides a pulse signal equivalent to what provided by systems using a Hall-effect sensor. A pull-up resistor (10kΩ is recommended) must be connected between FG pin and the power supply. Figure 14 shows the FG output signal when the fan rotates. VUO 5V/div VVO 5V/div VWO 5V/div VUO 5V/div VVO 5V/div -IWO 200mA/div VFG 5V/div Time 200µs/div Figure 12. Soft Switching Waveform Time 5ms/div 9. Current Limiter Circuit Figure 14. FG Output Signal The driver current is detected by connecting a resistor between RF pin (pin 15) and ground. The current limiter circuit limits the output current peak value to a level determined by the equation I=VRF/RF (VRF=0.25V typical). 13. Lock Shutdown and Auto Restart This IC detects the rotation of the motor by internal circuit block, and adjusts lock detection ON time (tON) and lock detection OFF time (tOFF) by internal counter. tON and tOFF are shown as below: 10. OSC Circuit A capacitor must be connected between OSC pin (Pin 7) and ground. When a capacitor is connected, the OSC pin starts self-oscillation, and its frequency becomes the startup frequency. Figure 13 shows a fan system’s OSC Waveform. VUO 5V/div VVO 5V/div VWO 5V/div VOSC 100mV/div Time 1s/div Figure 15. Lock Mode Time 500µs/div Figure 13. OSC Waveform (COSC=2200pF) Sep. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 9 PART OBSOLETE – NO ALTERNATE PART Data Sheet Three Phase Direct PWM Sensorless Motor Driver AM9800 OBSOLETE – PART DISCONTINUED Mechanical Dimensions SSOP-16 Unit: mm(inch) 3.800(0.150) 4.000(0.157) 7° 0.200(0.008) 0.300(0.012) 7° 0.635(0.025) BSC 4.700(0.185) Φ 5.100(0.201) 0.800(0.031) 0.100(0.004) 1.000(0.039) 0.900(0.035) 0.250(0.010) 1.350(0.053) 1.750(0.069) 0.400(0.016) 1.270(0.050) 5.800(0.228) 6.200(0.244) SEE DETAIL A 1.550(0.061) 8° 0.250(0.010) 1.350(0.053) 0.150(0.006) 0° R0.150(0.006) 8° 0.2 50(0.010) R0.150(0.006) 8° 0.650(0.026) 0.750(0.030) 0.200(0.008) 0.250(0.010) 0.020(0.001) 0.050(0.002) Note: Eject hole, oriented hole and mold mark is optional. DETAIL A Sep. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 10 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications 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. others. MAIN SITE - Headquarters BCD Semiconductor Manufacturing Limited BCD Semiconductor Manufacturing Limited - Wafer Fab No. 1600, Zi Xing Road, Shanghai ZiZhu Science-basedLimited Industrial Park, 200241, China Shanghai SIM-BCD Semiconductor Manufacturing Tel: Fax: +86-21-24162277 800,+86-21-24162266, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 REGIONAL SALES OFFICE Shenzhen OfficeSALES OFFICE REGIONAL - Wafer BCDFab Semiconductor Manufacturing Limited Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. - IC Design Group 800 Yi Shan Road, Shanghai 200233, China Corporation Advanced Analog Circuits (Shanghai) Tel: +86-21-6485 1491,YiFax: +86-21-5450 0008 200233, China 8F, Zone B, 900, Shan Road, Shanghai Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 Taiwan Office Shanghai Semiconductor Manufacturing Co., Ltd., Shenzhen Office BCD Taiwan Semiconductor Shenzhen SIM-BCD Office Office (Taiwan) Company Limited Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen, 4F, 298-1, Guang Road,(Taiwan) Nei-Hu District, Taipei, Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office BCDRui Semiconductor Company Limited China Taiwan Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Tel: +86-755-8826 +886-2-2656 2808 Room E, 5F, Noble 7951 Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, ChinaTel: Taiwan Fax: +86-755-8826 7951 7865 Fax: +886-2-2656 28062808 Tel: +86-755-8826 Tel: +886-2-2656 Fax: +86-755-8826 7865 Fax: +886-2-2656 2806 USA Office BCD Office Semiconductor Corp. USA 30920Semiconductor Huntwood Ave.Corporation Hayward, BCD CA 94544, USA Ave. Hayward, 30920 Huntwood Tel :94544, +1-510-324-2988 CA U.S.A Fax:: +1-510-324-2988 +1-510-324-2788 Tel Fax: +1-510-324-2788