MITSUBISHI <CONTROL / DRIVER IC> M56733AFP 3-PHASE BRUSHLESS MOTOR CONTROL DESCRIPTION PIN CONFIGURATION (TOP VIEW) The M56733AFP is a semiconductor integrated circuit designed as a single chip controller for the FDD spindle motor. The IC is 1 36 U HB 2 35 V circuits. FG IN– 3 34 W Equipped with MOD pin that enables 3-speed switching with a FGIN+ 4 33 HU+ single pin, the M56733AFP is very convenient to make system FGMoni 5 32 HU– EN 6 31 RF 7 30 8 29 oscillator, speed discriminator, and various types of protection compact. FEATURES ●Provided with digital servo enabling high precision, high stability M56733AFP VCC equipped with a power amplifier, hole amplifier, FG amplifier, 9 GND and non-adjustment. 10 ●3-speed switching function with a pin .................................. MOD 11 ● Enable two systems .......................................................... EN•EN GND 26 25 EN 13 24 HV+ OSCIN 14 23 HV– OSCOUT 15 22 HW+ MOD 16 21 HW– ●Low capacitance of dumping capacitor FDD spindle motor (5") RECOMMENDED OPERATING CONDITIONS 27 12 ●IO (peak)=1.0A APPLICATION 28 FLT 17 20 ERROUT DSCOUT 18 19 ERRIN– Supply voltage ................................................. 10.8 – 12.0 – 13.2 V Outline 36P2R-D Oscillation frequency .......................................................... 492 kHz Maximum output current ..................................................... 800 mA FG amplifier input signal level .............................. 5 mVp-p or more BLOCK DIAGRAM U V W FLT ERROUT ERRIN(–) DSCOUT 36 35 34 17 20 19 18 RF 31 7 VREF – ERR 12 GND OVSD DISCRIMINATOR VREF – CTL 25 30 LOGIC VCC 1 TSD 1/N OSC EN CONTROL 33 32 HU+ HU– 24 23 HV+ HV– 22 21 HW+ HW– 2 Hall Bias FG 6 EN 13 EN 3 4 FG– FG+ 5 FG (Monitor) 14 15 OSCIN OSCOUT 16 MOD MITSUBISHI <CONTROL / DRIVER IC> M56733AFP 3-PHASE BRUSHLESS MOTOR CONTROL ABSOLUTE MAXIMUM RATINGS (Ta=25˚C) Symbol Parameter Conditions VCC Io Supply voltage Output current VHD Hole amplifier, differential input voltage VIN fIN Pt Kθ Tj Topr Tstg Apply voltage at pin Clock frequency Power dissipation Thermal derating Temperature at junction Operating temperature Storage temperature Between 21 and 22, between 23 and 24, between 32 and 33 (pin number) 6,13,21 – 24,32,33 (pin number) Use of infinite heat sink Use of infinite heat sink TYPICAL CHARACTERISTICS Thermal derating (Maximum rating) 5.0 With infinite heat sink used Power dissipation Pdp (W) 4.5 4.0 Free air 3.0 2.0 1.0 0 0 25 50 75 100 125 Ambient temperature Ta (°C) 150 Ratings Unit 15 1.0 V A 5 V 0 – VCC 1000 4.5 27.8 150 -20 – 75 -40 – 125 V kHz W °C/W °C °C °C MITSUBISHI <CONTROL / DRIVER IC> M56733AFP 3-PHASE BRUSHLESS MOTOR CONTROL ELECTRICAL CHARACTERISTICS (Ta=25˚C, VCC=12V unless otherwise noted) Symbol ICCH ICCL IINHA VN ∆VN Vsat VTH GV ∆GV Limits Type. 18 – 0.4 6.3 – 2.8 1.20 18.05 23.80 28.00 – Max. 28 300 4.0 7.1 0.2 3.2 1.35 25.10 26.81 30.00 2 2.0 2.2 2.4 V -0.2 2.2 0.6 -0.02 2.5 0.8 – 3.1 1.05 µA Voltage at RF pin when the voltage at FLT pin is lower than 1.5V. 0.36 0.40 0.44 V Hi 6,13pin Lo VIN=12V 6pin VIN=0V 13pin Iinj=6mA Hi Lo 2.5 – 500 -150 0.6 4.1 0.5 – – 700 -100 0.9 4.8 0.8 – 1.0 1000 -70 1.5 5.3 1.2 -6 1 6 µs -0.2 25 – – – – – 0.1 0.2 – 4 0.2 % mA mA V 12V applied – – 1.0 µA 12V applied 0V applied 435 -75 565 -98 800 -140 µA Parameter Test conditions Min. 9 Circuit current Except for injector current with circuit turned ON – Circuit current With circuit turned OFF – Hole amplifier input current 5.1 Phase output center voltage Center voltage difference between phases – Output saturation voltage IO=0.7A, sum of upper and lower voltage – Control input reference voltage Voltage at FLT pin when output starts 1.05 Source side 16.65 Voltage gain between control input and Sink side 20.82 output Source + Sink 26.00 Difference in voltage gain between phases – Vref Error amplifier reference voltage IIN•E Error amplifier input current Vo•E Error amplifier output level VCL Current limit reference voltage VIN Function input threshold voltage IIN Input current at function input pin Vinj Voltage at injector pin VODSC Discriminator output level ∆T Discriminator count error fosc IinjMAX IinjMIN VOLFG I1FG Oscillation frequency Maximum operating current of injector Minimum operating current of injector FG amplifier output low level (monitor) Leak current at FG amplifier output pin (monitor) IINMOD Input current at MOD pin Measurement of mean level of discriminator output Hi Lo + for deceleration side, - for acceleration side fosc=492kHz fosc=492kHz fosc=492kHz fosc=492kHz IL=200µA Unit mA µA µA V V V V dB dB V V µA V V MITSUBISHI <CONTROL / DRIVER IC> M56733AFP 3-PHASE BRUSHLESS MOTOR CONTROL APPLICATION CIRCUIT EXAMPLE R7 R5 R3 U R8 C11 R9 C12 R10 C13 V W R4 C10 R6 36 35 34 33 32 31 C9 30 29 28 27 26 25 24 23 22 21 20 19 12 13 14 15 16 17 18 M56733AFP M56733AFP 1 2 3 4 5 6 7 8 9 10 11 R2 C3 X1 R1 C8 C6 FG C1 C2 C5 VCC C7 C4 FG EN Moni MOD EN <Constants> C1=33µF C2=0.47µF C3=10µF C4=0.01µF C5=165pF C6=56pF C7=165pF C8=1µF C9=0.01µF C10=0.1µF C11=0.1µF C12=0.1µF C13=0.1µF R1=5.1kΩ R2=510Ω R3=47kΩ R4=180kΩ R5=1.2kΩ R6=0.5Ω R7=1.2kΩ R8=4.7Ω R9=4.7Ω R10=4.7Ω X1=492kHz (Oscillator) 4. Enable function Notes: 1. Sets items with when measures for such as oscillation require to be taken. 2. R1 is to be used for injection current boost. Set R1, if necessary. 3. Set R2 when gain adjustments are required. EN LO EN Hi Lo DISABLE ENABLE Hi DISABLE DISABLE 5. Mode function Mode pin FG synchronous frequency Lo (MOD ≤ 0.8V) fosc/1640Hz M (Open status) Hi (MOD ≥ 2.6V) fosc/(4100/3) Hz fosc/820Hz