FCM8201 3-Phase Sinusoidal Brushless DC Motor Controller Features Description Supports Space Vector Modulation (SVM) FCM8201 is a three-phase sinusoidal brushless DC (BLDC) motor controller. It comes with the advanced Hall sensor design. Using the Hall sensor signals, the control system is able to execute the PWM commutation by switching the three-phase inverter. There are two PWM modes for selection: Sine-Wave Mode and the Square-Wave Mode. Square-Wave Mode includes PWM-PWM and PWM-ON approaches to improve the efficiency of the motor drive. Protection functions including over-voltage, over-current, overtemperature, and short circuit prevent the control circuits and the motor from being damaged, particularly under stressed applications and demanding environments. Information about voltage, current, and temperature is accessible through the SPI interface. Programmable Soft-Switching (Dead-Time) Supports Sine-Wave & Square-Wave Solutions Built-in Clock Generator Built-in Error Amplifier for Torque Loop Control Direct Duty Control Square-Wave 120°, Sine-Wave 180° Turn-on PLL Angle Detection (Hall Sensors) Programmable Current Leading Phase Serial Interface (SPI) Two Operation Modes (Stand-Alone Operation or Controlled through SPI) FCM8201 can be operated stand-alone or worked with microcontrollers for advanced BLDC motor control. Synchronous Rectifying Over-Voltage and Under-Voltage Protections Motor & Power Transistor Over-Voltage Protections Three Levels of Over-Current Protection (OCP) Programmable OC Timer Over-Temperature Protection (OTP) Applications BLDC Motor Control Low-Noise Motor Applications Fan, Pump, Tools, etc. Ordering Information Part Number Operating Temperature Range Package Packing Method FCM8201QY -40°c to 85°C 32-Leadless Quad Flat Pack Package (LQFP) , JEDEC MS-026, Variation BCE, 7mm Square Tray © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller September 2010 VOUT DC/DC Converter HOVP 25 VPP 1 32 PGND 6 FREE/nST 5 CW/CCW VOUT VSENSE 21 FCM8201 16 DUTY U 31 7 XP X 30 8 XN V 29 10 DGND Y 28 VOUT 3-Phase Inverter W 27 11 VOUT Z 26 18 AGND I IN 19 20 AS VOUT 15 I_FB 14 IN VOUT HA 2 HB 3 HC 4 FO 9 13 OPO 12 IP 23 OC_TMR Motor FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Typical Application Circuits VOUT nFAULT 24 RT 22 17 R_CLK Figure 1. Stand-Alone Application © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 2 DC/DC Converter 25 VPP HOVP 1 32 PGND VSENSE 21 SEN SCK MCU SDO SDI 8 SEN 5 SCK 6 SDI 7 SDO FCM8201 U 31 X 30 10 DGND VOUT V 29 FO Y 28 20 AS W 27 9 3-Phase Inverter Z 26 23 OC_TMR 11 VOUT I IN 19 VOUT 18 AGND 16 DUTY 12 IP 15 I_FB HA 2 HB 3 HC 4 Motor FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Typical Application Circuits (Continued) 14 IN VOUT 13 OPO nFAULT 24 RT 22 17 R_CLK Figure 2. SPI Application © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 3 Figure 3. System Block Diagram FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Block Diagram Marking Information F- Fairchild Logo Z- Plant Code X- 1-Digit Year Code Y- 1-Digit Week Code TT: 2-Digit Die Run Code T: Package Type (Q=LQFP) P: Y=Green Package M: Die Run Code Figure 4. © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 Top Mark www.fairchildsemi.com 4 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Pin Configuration Figure 5. Pin Configuration Pin Definitions Pin # Name Description 1 HOVP Motor Drive Over-Voltage Protection Output. It can be connected to an external power transistor for discharging the back EMF. 2 HA Hall A Sensor Input. Phase-U magnetic field detection. 3 HB Hall B Sensor Input. Phase-V magnetic field detection. 4 HC Hall C Sensor Input. Phase-W magnetic field detection. 5 6 7 CW/CCW SCLK FREE/ST Serial Clock Input. Designed for SPI operation. Free and Start Control Input. Designed for stand-alone operation. HIGH: Free, LOW: Start. SDI Serial Data Input. Designed for SPI operation. XP Interface Selection P (Open-Drain). Designed to configure the pin #5~8 work on standalone or SPI operation. SDO 8 Direction Control Input. Designed for stand-alone operation. HIGH: CW, LOW: CCW. XN SEN Serial Data Output, (Open-Drain). Designed for SPI operation. Interface Selection N (Open-Drain). Designed to configure the pin #5~8 work on standalone or SPI operation. SPI Enable (Open-Drain). Designed for SPI operation. HIGH: SPI disable, LOW: SPI enable. Continued on the following page… © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 5 Pin # Name Description 9 FO 10 DGND Digital Ground 11 VOUT Voltage Regulator Output. A 0.1µF (minimum) capacitor should be connected between this pin and ground. 12 IP 13 OPO 14 IN 15 I_FB Current Feedback Output 16 DUTY PWM Duty Control Input. Designed to directly control the PWM duty cycle in stand-alone operation. 17 R_CLK External Resistor of Clock Generator. Designed for determining the frequency of the internal clock generator. 18 AGND Analog Ground 19 I_IN Current Feedback Input 20 AS Angle Shift Input. Designed for correcting the lead angle of PWM output signals. The range is from 0° to 60° related to the induced magnetic voltage. 21 VSENSE Motor Drive Voltage-Sensing Resistor. Designed for determining the voltage level of overvoltage protections. 22 RT 23 OC_TMR Overload Time-Out Programmable Input. Connect to a capacitor for determining the time delay of overload protection. 24 nFAULT Fault Flag. Open-drain output, LOW: system failure. 25 VPP 26 Z PWM Output of W-Phase Low Side 27 W PWM Output of W-Phase High Side 28 Y PWM Output of V-Phase Low Side 29 V PWM Output of V-Phase High Side 30 X PWM Output of U-Phase Low Side 31 U PWM Output of U-Phase High Side 32 PGND Revolution Pulse Output. Pulses per revolution=motor poles ÷ 2 × 3. Positive Input of Torque Error Amplifier Output of Torque Error Amplifier Negative Input of Torque Error Amplifier Thermistor Voltage Input. Connect to a NTC (Negative Temperature Coefficient) thermistor for the over-temperature protection. FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Pin Definitions (Continued) Supply Voltage Input High-Voltage Ground © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 6 Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VVPP ESD Parameter Min. Max. Unit 0 30 V Supply Voltage Human Body Model, JESD22-A114 3.00 Charged Device Model, JESD22-C101 1.25 kV Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol TA Parameter Conditions Operating Ambient Temperature Min. Typ. -40 Max. Unit +85 °C VPP Supply Voltage 10.0 12.0 17.5 V fSYS System Clock 0.96 1.28 1.92 MHz R_CLK RI_IN Clock Generator External Resistor 12 kΩ I_IN Bias Resistor 10 kΩ © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Absolute Maximum Ratings www.fairchildsemi.com 7 VPP=12V and TA=25°C unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units VPP Section VVPP_ON Turn-On Threshold Voltage 8.5 9.0 9.5 V VVPP_OFF Turn-Off Threshold Voltage 7.5 8.0 8.5 V VPP=12V, fSYS=1.28MHz 4.0 5.0 6.5 mA Regulator Output Voltage Output Current 5mA 4.9 5.2 5.5 V IVOUT Regulator Output Current VVOUT=5.2V 10 mA CVOUT Regulator External Capacitor IDD_OP Operating Supply Current Voltage Regulator Section VVOUT 0.1 µF 4.0 V Digital I/O Section VIH_HALL Hall Signals Input High Level VIL_HALL Hall Signals Input Low Level VHYS_HALL Hall Signals Hysteresis Voltage TDEB_HALL Hall Signals Debounce Time 2.0 2.5 1.0 V 3.0 V 5 µs VIH_SPI SPI Signals Input High Level 2.5 5.3 V VIL_SPI SPI Signals Input Low Level -0.3 1.0 V VOH_SPI SPI Signals Output High Level IO=4mA VOL_SPI SPI Signals Output Low Level IO=4mA RDIO_UP Digital I/O Internal Pull High Resistor 4 150 V 200 1 V 250 kΩ High-Voltage I/O Section VOH_PWM PWM Signals Output High Level (U/V/W/X/Y/Z) VPP=12V, IO=4mA VOL_PWM PWM Signals Output Low Level (U/V/W/X/Y/Z) VPP=12V, IO=4mA VOH_HOVP HOVP Output High Level VPP=12V, IO=1mA VOL_HOVP HOVP Output Low Level VPP=12V, IO=1mA 10 V 1 10 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Electrical Characteristics V V 1 V 4.6 V PWM Control Section Vfd Full Duty Voltage of DUTY Pin Vzd Zero Duty Voltage of DUTY Pin tPWM_MIN 4.1 4.5 0.7 V 1 µs PWM Minimum On Time R_CLK=12KΩ tDEAD0 PWM Dead Time 0 DT[1:0] / PWM_REG=00 (Default Value) 2.0 2.5 3.0 µs tDEAD1 PWM Dead Time 1 DT[1:0] / PWM_REG=01 1.5 2.0 2.5 µs tDEAD2 PWM Dead Time 2 DT[1:0] / PWM_REG=10 3.5 4.0 4.5 µs tDEAD3 PWM Dead Time 3 DT[1:0] / PWM_REG=11 3.0 3.5 4.0 µs REGzd Zero Duty Value of DUTY_REG and IP_REG fPWM_20K ISOURCE_OPO ISINK_OPO AvERR GBW ERR 0x00 0x07 PWM Frequency 20KHz R_CLK=12KΩ 18.5 20.0 21.5 KHz Current Source Capability of OPO Pin IP=5V, IN=0V, OPO=0V 4.5 5.0 5.5 mA Current Sink Capability of OPO Pin IP=0V, IN=5V, OPO=5V -4.5 -5.0 -5.5 mA Gain of Torque Error Amplifier 60 dB Unit-Gain Bandwidth of Torque Error Amplifier 10 MHz Continued on the following page… © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 8 VPP=12V and TA=25°C unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units Sine Wave PWM Generator VSIN_ENA Sine Wave Enable Threshold of DUTY Pin 0.75 V VSIN_DIS Sine Wave Disable Threshold of DUTY Pin 0.65 V tSIN_ENA Sine Wave Enable Debounce Time 1 ms tSIN_DIS Sine Wave Disable Debounce Time 100 ms Over-Current Protections Section VOCP_SH Short-Circuit Current Protection Threshold Voltage 2.5 V VOCP_CYC Cycle-by-Cycle Current Protection Threshold Voltage 1.5 V VOCP_OL Overload Current Protection Threshold Voltage 1.4 V VOC_TMR OC_TMR Threshold Voltage 2.5 V ITMR_CHG OC_TMR Charge Current OC_TMR=0V 30 40 50 µA ITMR_DIS OC_TMR Discharge Current OC_TMR=5V 5 10 15 µA IBIAS_I_IN Bias Current of I_IN RI_IN=10kΩ 40 50 60 µA IO_I_FB I_FB Output Current GI_FB I_FB Output Gain 0.5 mA 8 Over/Under-Voltage Protections (OVP/UVP) Section VOV_VPP System OVP Threshold Voltage 18 V VOV_VPP_RLS System OVP Release Voltage 17 V tOV_VPP System OVP Debounce Time VUV_VPP System UVP Threshold Voltage 7.5 8.0 8.5 V VUV_VPP_RLS System UVP Release Voltage 8.5 9.0 9.5 V VUV_VOUT VOUT UVP Threshold Voltage 100 VUV_VOUT_RLS VOUT UVP Release Voltage VOV_MOTOR Motor Drive Voltage OVP Threshold Voltage VRL_MOTOR Motor Drive Voltage OVP Release Voltage 4.3 µs 4 V 4.5 V 4.5 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Electrical Characteristics (Continued) 4.8 4.0 V V Over-Temperature Protection (OTP) Section OTP Threshold Voltage 0.9 1.0 1.1 V VRT_RLS VRT OTP Release Voltage 1.15 1.20 1.25 V IRT RT Pin Source Current 40 50 60 µA 4.6 4.8 5.2 V Pins Open/Short Protection Section VSHORT Pins Short Protection Level R_CLK Pin VOPEN Pins Open Protection Level R_CLK and RT Pins © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 0.2 V www.fairchildsemi.com 9 Figure 6. PWM Frequency 20KHz (fPWM_20K) vs. Temperature Figure 7. PWM Dead Time 2µs (tDEAD0) vs. Temperature Figure 8. OPO Current Source (ISOURCE_OPO) vs. Temperature Figure 9. OPO Current Sink (ISINK_OPO) vs. Temperature Figure 10. I_IN Bias Current (IBIAS_I_IN) vs. Temperature © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 Figure 11. FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Typical Performance Characteristics RT Current Source (IRT) vs. Temperature www.fairchildsemi.com 10 Figure 12. OTP Threshold Voltage (VRT) vs. Temperature Figure 14. PWM Full Duty Voltage (VFD) vs. Temperature Figure 13. Figure 15. PWM Zero Duty Voltage (VZD) vs. Temperature Figure 16. VPP Turn-On Threshold Voltage (VVPP_ON) vs. Temperature © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 Motor OVP Threshold Voltage (VOV_MOTOR) vs. Temperature FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Typical Performance Characteristics (Continued) Figure 17. VPP Turn-Off Threshold Voltage (VVPP_OFF) vs. Temperature www.fairchildsemi.com 11 Power Management and Regulator Table 2. Square Wave PWM-ON Commutation FCM8201 can be operated in a wide input voltage (VPP) range from 10V to 15V. The VOUT pin is the output terminal of an internal voltage regulator. The typical output voltage ranges between 5.0V and 5.2V. To stabilize the VOUT circuit, add an external capacitor connected closely between this terminal and the ground. If the VPP voltage is lower than the 8V threshold, FCM8201 shuts down and all the internal registers are reset. CW Hall Hall U-V-W X-Y-Z X 000 0 0-0-0 0-0-0 x 111 7 0-0-0 0-0-0 1 001 1 1-Pb-0 0-P-0 1 011 3 0-0-P 0-1-Pb 1 010 2 Pb-0-1 P-0-0 Clock Generator 1 110 6 0-P-0 1-Pb-0 FCM8201 comes with a programmable oscillator. By determining an externally added resistor R_CLK, the system clock can be programmed from 960KHz to 1920KHz. The switching frequency of the PWM signal is equal to 1/64 (divided by ÷ 64) of the system clock. Therefore, when the system clock is configured as 960KHz, PWM is 960KHz / 64=15KHz. Similarly, if a 20KHz PWM is intended, the system clock has to be set as 1.28MHz. 1 100 4 0-1-Pb 0-0-P 1 101 5 P-0-0 Pb-0-1 0 101 5 0-0-P 1-0-Pb 0 100 4 0-Pb-1 0-P-0 0 110 6 P-0-0 Pb-1-0 0 010 2 1-0-Pb 0-0-P 0 011 3 0-P-0 0-Pb-1 0 001 1 Pb-1-0 P-0-0 PWM Commutation Note: 1. P=PWM, Pb=PWM inverse. FCM8201 supports both square-wave and sine-wave PWM for the BLDC motor control. The controller comes with the hall-sensor design used to align the rotor position of the motor. For the Square-Wave PWM Mode, the PWM output commutation (PWM-PWM and PWM-ON) is shown at Table 1 and Table 2. The Square-Wave PWM Modes can be selected by setting an internal control register through the SPI interface. The default value of PWM-PWM commutation is shown in Table 1. HALL Signals Input FCM8201 provides a 3~6µs debounce time for each Hall signal input to reduce the glitch of the Hall signals. When the transition of the Hall signal is slow, a glitch might be produced and an error follow. Through a builtin Hall signal regulation circuit, FCM8201 minimizes the risks of glitches and related errors. This function can be enabled or disabled through a control register via the SPI interface. Table 1. Square Wave PWM-PWM Commutation The Hall signal’s polarity can be configured by setting the levels of HA_INV, HB_INV, and HC_INV. For example, if HA_INV=1, an internal Hall-a signal is the inverse of the HA pin. Otherwise, the internal Hall-a signal is the same as the signal on the HA pin. CW Hall Hall U-V-W X-Y-Z X 000 0 0-0-0 0-0-0 X 111 7 0-0-0 0-0-0 1 001 1 P-0-0 Pb-1-0 1 011 3 0-0-P 0-1-Pb PWM Duty Cycle and Operation 1 010 2 0-0-P 1-0-Pb 1 110 6 0-P-0 1-Pb-0 1 100 4 0-P-0 0-Pb-1 1 101 5 P-0-0 Pb-0-1 0 101 5 0-0-P 1-0-Pb 0 100 4 0-0-P 0-1-Pb 0 110 6 P-0-0 Pb-1-0 The PWM duty is proportional to the voltage levels on the OPO pin and DUTY pin. A FREE/nST pin is utilized to enable the PWM signals. When FREE/nST pin is set as logic HIGH, the PWM state is in free mode and all PWM outputs (U, V, W, X, Y, Z pins) are logic LOW. Once the FREE/nST pin goes logic LOW, the FCM8201 starts operating the PWM. FCM8201 supports various PWM operation modes to fit different application needs. The detailed description is shown in the Table 6 SPI Register Table. 0 010 2 P-0-0 Pb-0-1 0 011 3 0-P-0 0-Pb-1 0 001 1 0-P-0 1-Pb-0 © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Functional Description www.fairchildsemi.com 12 Current Feedback and Protections FCM8201 includes space vector modulation (SVM) for the sine-wave PWM. An angle-detect circuit phaselocks the rotor position by using the Hall signals of the motor. The resolution is 32 steps per 60 degrees. Through the PWM operation, the motor current of each phase is sine-wave. The angle shift between phases is 120 degrees. The current feedback circuit provides two major functions: (1) generating a current feedback signal for the motor control, and (2) supporting over-current protections. The I_IN pin outputs 50µA current to provide a DC bias on the I_IN terminal to prevent a negative voltage, shown in Equation (1) for the I_FB and the I_IN. A 0.5V DC bias on I_IN is recommended. The maximum average current signal is 1V. Using these parameters, the maximum I_FB signal swing is 0.5V~4.5V. Figure 20. Current Feedback Flow VI _ FB = ( VS × 8) + (IBIAS _ I _ IN × RBIAS ) (1) FCM8201 provides three different levels of over-current (OC) protections. The first level is 1.4V, used for overload current protection with OC timer delay. If the I_IN is higher than 1.4V, the OC timer is triggered. The OC_Latch is enabled once the timer exceeds its timeout limit. The second level is 1.5V, used for the cycleby-cycle current limit. The PWM signal is turned off immediately when the I_IN is > 1.5V. The third level is 2.5V, designed for the short-circuit protection. If the I_IN is > 2.5V for over three PWM pulses, all PWM outputs (U, V, W, X, Y, Z pins) are turned off. Figure 18. Sine Wave Output at CW=1 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Sine Wave Generator Protections and Faults Table 3. Faults Table Figure 19. Sine Wave Output at CW=0 © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 Type State Trigger Release VPP OV Free VPP > 18V VPP UV Free, Reset VPP < 8V VOUT UV Free VOUT < 4V RT Free RT < 1.0V RT > 1.2V ↑Run OS Free Open & Short Hall Error Free Hall=000 or 111 HOVP Free VSENSE > 4.5V OC_Latch Free I_IN > 1.4V ↑Run Watch Dog Free WDT Time Out Register SHORT Free I_IN > 2.5V ↑Run www.fairchildsemi.com 13 FCM8201 has an 8-bit digital-to-analog converter (DAC) to control the DUTY and IP through the SPI interface. To return from SPI mode to stand-alone mode, the microcontroller has to complete the signal toggle procedure shown in Figure 22. Analog to Digital Converter FCM8201 has a 5-bit analog-to-digital converter (ADC) for the signal on AS, VSENSE, I_FB, and RT pins. Its voltage can be read through the SPI interface. SPI Interface The microcontroller can access FCM8201 through the SPI interface. In SPI operation mode, FCM8201 provides more motor control function than in standalone operation mode. Please refer to the Table 6 and Table 7 for the details. I/O Optional Function The pins 5~8 of FCM8201 are two types of I/O for both stand-alone and microcontroller (SPI mode) applications. FCM8201 uses stand-alone mode by default. The microcontroller should use pin 7 (XP) and pin 8 (XN) to complete the signal toggle procedure Figure 21. Figure 22. I/O Select Timing of Entering SPI Mode FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller shown in Figure 21. In the way, FCM8201 activates SPI operation mode. Afterwards, The pins 5~8 change to SPI function. Digital-to-Analog Converter I/O Select Timing of Exiting SPI Mode Table 4. Timing Specification of I/O Function Selection Symbol tSEL Parameter Select-Bit Stable Time Conditions Min. fSYS=1.28MHz 12 0 Typ. Max. Unit 100 µs tTR Select-Bit Transient Time fSYS=1.28MHz tACT Acknowledge Bit Pull Low Time fSYS=1.28MHz 1 ms tRES FCM8201 Response Time fSYS=1.28MHz 4 µs © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 12 µs www.fairchildsemi.com 14 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Figure 23. SPI Bit Definition Figure 24. SPI Timing Specification Table 5. Timing Specification of SPI Symbol Parameter Conditions Min. Typ. Max. Unit tEN_S Setup Time of SEN fSYS=1.28MHz 2 µs tEN_H Hold Time of SEN fSYS=1.28MHz 2 µs tSD_S Setup Time of SDO/SDI fSYS=1.28MHz 0 µs tSD_H Hold Time of SDO/SDI fSYS=1.28MHz 2 µs tCLK Maximum Clock Rate of SPI fSYS=1.28MHz 12.5 SCK Time-Out fSYS=1.28MHz 90 tTMR_OUT © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 µs 100 ms www.fairchildsemi.com 15 CNTL_REG: System Control Register Addr. Name Type 0x00 CNTL B7 W/R TMR_CLR Reset 0 b7 TMR_CLR B6 B5 OC_TMR2 OC_TMR1 0 0 B4 B3 B2 B1 B0 OC_TMR0 IP_EA DT_EA CW FREE/nST 0 0 0 1 1 OC Timer Clear 1=OC timer clear, 0=OC time is normal function Overload Current Protection Timer Configuration 000=OC timer configure by OC_TMR pin 001=OC timer configure to 2^18 ÷ fSYS 010=OC timer configure to 2^19 ÷ fSYS b[6:4] OC_TMR[2:0] 011=OC timer configure to 2^20 ÷ fSYS 100=OC timer configure to 2^21 ÷ fSYS 101=OC timer configure to 2^22 ÷ fSYS 110=OC timer configure to 2^23 ÷ fSYS 111=OC timer configure to 2^24 ÷ fSYS b3 IP_EA IP_REG Enable 1=duty control by IP_REG, 0=duty control by IP pin b2 DT_EA DUTY_REG Enable 1=duty control by DUTY_REG, 0=duty control by DUTY pin b1 CW b0 FREE/nST Output Driving Current Direction 1=CW, 0=CCW FREE or START 1=FREE (PWM outputs disable), 0=START (PWM outputs enable) PWM_REG: PWM Control Register Addr. Name Type 0x01 PWM B7 B6 B5 B4 B3 B2 B1 B0 W/R PMOD n/a DT1 DT0 SEQ_TBL SYNCOFF EXT_SYN LPWM Reset 0 0 0 0 0 0 0 0 b7 PMOD PWM Mode Select 0= sine wave PWM drive after angle detector locked 1= square wave PWM drive after angle detector locked b[5:4] DT[1:0] Soft Switching Dead Time Setting 00=2µs, 01=1.5µs, 10=1µs, 11=0.5µs b3 SEQ_TBL Square Wave Sequencer Table Select 0= “PWM-PWM” commutation, 1=“PWM-ON” commutation b2 SYNCOFF Synchronous Rectifier (SR) Disable 0= SR enable, 1=SR disable EXT_SYN External Synchronous Rectifier Configure 0= SR function control by SYNCOFF bit 1= SR function control by OC_TMR pin In this selection, the OC_TMR[2:0] bits of CNTL_REG can’t be set to 0, too OC_TMR pin: HIGH=SR enable, LOW=SR disable b1 b0 LPWM FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Table 6. SPI Register Table (Read/Write) Low-Side Minimum PWM Output Enable. This function is working only on square wave PWM driving 0= Low side minimum PWM duty output disable 1= Low side minimum PWM duty output enable Continued on the following page… © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 16 Addr. Name Type 0x02 ANG B7 B6 B5 ARNG1 ARNG0 B4 B3 B2 B1 B0 ANG4 ANG3 ANG2 ANG1 ANG0 0 0 0 0 0 W/R ANG_SEL Reset 0 b7 ANG_SEL Angle Shift Control Input Select 0=Set by AS pin, 1=Set by ANG[4:0] b[6:5] ARNG[1:0] Angle Predictor Working Range Select 0,0= Work in 0.8 ~ 80Hz Hall frequency, 48 ~ 4800rpm at 2-pole motor 0,1= Work in 0.4 ~ 40Hz Hall frequency, 24 ~ 2400rpm at 2-pole motor 1,x= Work in 3.2 ~ 320Hz Hall frequency, 192 ~ 19200rpm at 2-pole motor b[4:0] ANG[4:0] 0 0 Angle Setting of Angle Shift Function 0~31=0 ~ 60 degrees SVM_REG: Sine Wave Generator Control Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x03 SVM W/R SIN_MAU SIN_EA n/a n/a n/a n/a n/a n/a 0 0 0 0 0 0 0 0 Reset b7 b6 Sine Wave Driving Force Active SIN_MAU 0=Sine wave automatic active 1=Sine wave active by SIN_EA bit and ignore AS<0.2V SIN_EA Sine Wave Enable (This function only active on while SIN_MAU=1) 0=Sine wave disable, 1=Sine wave enable HALL_REG: Hall Signals Control Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x04 HALL W/R n/a n/a n/a n/a HREG HC_INV HB_INV HA_INV Reset 0 0 0 0 0 0 0 0 b3 HREG b2 HC_INV Hall C Input Invert 0=non-invert, 1=invert b1 HB_INV Hall B Input Invert 0=non-invert, 1=invert b0 HA_INV Hall A Input Invert 0=non-invert, 1=invert FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller ANG_REG: Angle Shift Control Register Hall Signals Regulation Enable 0=disable, 1=enable Continued on the following page… © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 17 Addr. Name Type B7 B6 B5 B4 B3 B2 0x06 WDT W/R OSL_DIS OTL_DIS n/a CRC_ON WDT_EN CLR 0 0 0 0 0 0 Reset B1 B0 W_TMR1 W_TMR0 0 0 b7 OSL_DIS Open Short (OS) Fault Latch Disable 0=OS protect does not latch 1=OS protect does not latch and clear by FREE/nST pin rising edge or FREE/nST bit=1 b6 OTL_DIS Over Temperature Fault Latch Disable 0=OTP protect does not latch 1=OTP protect will latch, and clear by FREE/nST pin rising edge or FREE/nST bit=1 b4 CRC_ON SPI CRC Check Enable 0=SPI CRC check disable 1=SPI CRC check enable b3 WDT_EN Watch Dog Timer Enable 0=watch dog timer disable 1=watch dog timer enable and outputs a faulty when the counter reaches time-out b2 CLR Watch Dog Timer Clear (This bit is effective only when WDT_EN=1) 1=WDT counter reset, after counter is cleared to zero, this bit auto-resets to 0 Watch Dog Timer Counter Select 0,0=0.25s at fSYS=1.28MHz b[1:0] W_TMR[1:0] 0,1=0.5s at fSYS=1.28MHz 1,0=1s at fSYS=1.28MHz 1,1=2s at fSYS=1.28MHz FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller WDT_REG: Watch Dog Timer Control Register DUTY_REG: Duty Control Register Addr. Name Type 0x08 DUTY W/R B7 B6 B5 B4 B3 B2 B1 B0 DUTY7 DUTY6 DUTY5 DUTY4 DUTY3 DUTY2 DUTY1 DUTY0 0 0 0 0 0 0 0 0 Reset b[7:0] DUTY[7:0] DUTY Level Configure 0 ~ 255=0.5 ~ 4.5V IP_REG: Error Amplifier IP Pin Control Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x09 W/R IP7 IP6 IP5 IP4 IP3 IP2 IP1 IP0 Reset 0 0 0 0 0 0 0 0 IP b[7:0] IP[7:0] © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 IP Pin Level of Error Amplifier Configure 0 ~ 255=0.5 ~ 4.5V www.fairchildsemi.com 18 AS_REG: AS Pin Voltage Level Read Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x20 AS R n/a n/a n/a AS4 AS3 AS2 AS1 AS0 b[4:0] AS[4:0] AS voltage=( AS[4:0] × 0.125 ) ＋ 0.5V VSENSE_REG: VSENSE Pin Voltage Level Read Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x21 VSENSE R n/a n/a n/a VS4 VS3 VS2 VS1 VS0 b[4:0] VS[4:0] VSENSE voltage=( VS[4:0] × 0.125 ) ＋ 0.5V I_FB_REG: I_FB Pin Voltage Level Read Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x22 I_FB R n/a n/a n/a IFB4 IFB3 IFB2 IFB1 IFB0 b[4:0] IFB[4:0] I_FB voltage=( IFB[4:0] × 0.125 ) ＋ 0.5V RT_REG: RT Pin Voltage Level Read Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x23 RT R n/a n/a n/a RT4 RT3 RT2 RT1 RT0 b[4:0] RT[4:0] RT voltage=( RT[4:0] × 0.125 ) ＋ 0.5V HPERH_REG: Hall Period Counter HIGH Byte Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x26 HPERH R HP15 HP14 HP13 HP12 HP11 HP10 HP9 HP8 b[7:0] FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Table 7. SPI Registers Table (Read Only) HP[15:8] Hall period count HIGH byte, bit [15:8] HPERL_REG: Hall Period Counter LOW Byte Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x27 HPERL R HP7 HP6 HP5 HP4 HP3 HP2 HP1 HP0 b[7:0] HP[7:0] Hall period count LOW byte, bit [7:0] STATUS_REG: System Status Register Addr. Name Type B7 B6 B5 B4 B3 B2 B1 B0 0x28 STATUS R OT OC OS OV H_ERR DIR WDT SHORT b7 OT 1=Over-temperature protection triggered (RT pin voltage ＜ VRT) b6 OC 1=Overload current protection triggered b5 OS 1=Open/Short protection triggered b4 OV 1=Motor drive over-voltage protection triggered (VSENSE pin voltage ＞ VOV_MOTOR) b3 H_ERR b2 DIR 1=Hall direction different from that on the PWM sequencer table b1 WDT 1=Watch dog time-out triggered b0 SHORT © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 1=Hall signals error (HA/B/C=1/1/1 or 0/0/0) 1=Short-circuit current protection triggered www.fairchildsemi.com 19 9.0 7.0 8.70 D 17 24 0.80 A 25 16 B 7.0 8.70 9.0 32 9 8 1 1.80 PIN #1 IDENT 0.20 C A-B D TOP VIEW 0.45 ALL LEADTIPS 1.45 1.35 LAND PATTERN RECOMMENDATION SEE DETAIL A 0.8 C 32X 0.45 0.30 7.1 32X 6.9 SIDE VIEW 0.20 SEATING PLANE C A-B D R0.08 MIN R0.08-0.20 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller Physical Dimensions 12° TOP & BOTTOM 0.25 NOTES: A) CONFORMS TO JEDEC MS-026 VARIATION BBA B) ALL DIMENSIONS IN MILLIMETERS. C) DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994. E) DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH, AND TIE BAR PROTRUSIONS. F) LANDPATTERN STANDARD: QFP80P900X900X160-32BM. G) DRAWING FILE NAME: MKT-VBE32AREV2 Figure 25. 1.6 MAX GAGE PLANE 0.20 MIN 0.75 0.45 0.15 0.05 1.0 DETAIL A 0.10 C 32-Leadless Quad Flat Pack Package (LQFP) Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 20 FCM8201 — 3-Phase Sinusoidal Brushless DC Motor Controller © 2010 Fairchild Semiconductor Corporation FCM8201 • Rev. 1.0.0 www.fairchildsemi.com 21