BD6641KUT_11

1/4 Structure Products Series Type Features Silicon Monolithic Integrated Circuit 4ch PWM Sensorless System Motor Driver for MD BD6641KUT ・Operates at low power supply voltage (2.1V min.) ・Power DMOS output with low ON resistance (0.8Ω typ.) ・Incorporates a charge pump circuit for VG boost ・3-phase full-wave PWM soft switching sensorless driver for spindle ・3-value control 3-phase driver for sled (Built-in comparator for BEMF voltage detection) ・2ch, 3-value control H-bridges for focus/tracking ○Absolute maximum ratings (Ta=25°C) Parameter Power supply voltage for control circuit Power supply voltage for driver block Power supply voltage for pre-driver block Input voltage Output current Power dissipation Operating temperature range Storage temperature range Junction temperature Symbol VCC VM VG VIN Iomax Pd Topr Tstg Tjmax Limit 7 7 14 0～VCC *500 **1375 -25～+75 -55～+150 +150 Unit V V V V mA mW ℃ ℃ ℃ ＊Must not exceed Pd or ASO, Tjmax=150℃. ＊＊Reduced by 11mW/°C over Ta=25°C, when mounted on a glass epoxy board (70mm70 mm1.6mm). ○Operating conditions (Ta=-25～+75℃) Parameter Power supply voltage Symbol VCC VM VG Min. 2.1 － 3 Typ. 2.2 － 6.5 Max. 6.5 3.0 13 Unit V V V This product described in this specification is not judged whether it applies to COCOM regulations. Please confirm in case of export. This product is not designed for protection against radioactive rays. REV. B 2/4 ○Electrical characteristics (Unless otherwise specified, Ta=25°C, VCC=2.2V, VM=1.0V, fin=176kHz) Parameter ～Spindle (3-phase full-wave sensorless driver)～ Position detection comparator offset Position detection comparator input range Position detection comparatorinput current H Position detection comparatorinput current L Symbol Limit Min. -10 0 -2 -12.8 6.5 0.5 0.3 70 -12.5 6.5 0.5 0.35 350 60 VCC-0.4 0 -1 VCC-0.4 0 -1 VCC-0.4 0 VCC-0.4 0 -1 120 -10 0 -2 10 Typ. -9.8 9.4 0.8 0.46 100 -9.65 9.56 0.75 0.53 505 132 0.2 0.1 0.2 20 Max. 10 VCC-1.0 2 -6.8 12.5 1.1 0.6 130 -6.5 12.5 1.0 0.70 650 200 VCC 0.4 1 VCC 0.4 1 VCC 0.4 VCC 0.4 1 1 0.7 10 VCC-1.0 2 0.3 30 Unit Conditions VSOFS VSD ISH ISL ISLO ISLI VSLH VSLL fOSC IOSCO IOSCI VOSCH VOSCL VSET ｆPWM VPWH VPWL IPWH IPWL VBKH VBKL IBKH IBKL VFGH VFGL VINH VINL IINH IINL TRISE TFALL tmin VAOFS VAD IAH IAL VAOL ROA mV V μA μA μA μA V V kHz μA μA V V mV kHz V V μA μA V V μA μA V V V V μA μA μs μs ns mV V μA μA V kΩ Io=300μA Input pulse width 200 ns VIN=VCC VIN=0V PWM=VCC PWM=0V Brake ON(BD6641KUT) Brake OFF(BD6643KN) Brake OFF(BD6641KUT) Brake ON(BD6643KN) BRAKE=VCC BRAKE=0V Io=-500μA Io=500μA ISET=50kΩ OSC=200pF ISET=50kΩ input=VCC input=0V SLOPE charge current SLOPE discharge current SLOPE clamp H level SLOPE clamp L level OSC oscillating frequency OSC charge current OSC discharge current OSC H level OSC L level ISET voltage PWM input frequency PWM H level input voltage PWM L level input voltage PWM H level input current PWM L level input current BLAKE H level input voltage BLAKE L level input voltage BLAKE H level input current BLAKE L level input current FG H level output voltage FG L level output voltage H level input voltage L level input voltage H level input current L level input current I/O propagation delay time (H-bridge) Short pulse input response (H-bridge) ～Sled, position detection comparator～ Position detection comparator offset Position detection comparator input range Position detection comparator input current H Position detection comparator input current L Position detection comparator output voltage L Position detection comparator output pull-up resistance ～Sled, focus, tracking (stepping, H-bridge  2ch)～ ◎This product is not designed for protection against radioactive rays. REV. B 3/4 ○Package outlines Type BD6641KUT Lot No. TQFP64U outlines (Unit：mm) ○Block diagram VCC (40) STBY (32) S1 (64) S2 (1) S3 (2) BEMFU (15) BEMFV (16) BEMFW (17) ○Pin No./Pin name NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pin name S2 S3 VG N.C H2VM N.C C2M C2P GND C1M N.C H1VM N.C C1P BEMFU BEMFV BEMFW IN1F IN1R H1FOUT H1PG H1ROUT N.C N.C SPUOUT N.C SPVOUT SPPG SPWOUT N.C PWM STBY NO. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Pin name BRK SPCOM SLOPE N.C SPVM MSK ISET VCC N.C OSC N.C SLVM FG FLT1 FLT2 RLV2 SGND RLV1 SLCOM SLUOUT SLPG SLVOUT N.C SLWOUT N.C N.C H2FOUT H2PG H2ROUT IN2F IN2R S1 VG IN1F (18) IN1R (19) H1VM (12) H1FOUT (20) H 1ROUT (22) H1PG (21) IN2F (62) IN2R (63) H 2VM (5) H2FOUT (59) H 2ROUT (61) H2PG (60) VG (3) C1P (14) C1M (10) C2P (8) C2M (7) B RK (33) PW M (31) VG S LED Decoder 3 S LED BEMF Detector S LED PreDriver H1 PreDriver S LCOM (51) S LVM (44) SLUOUT (52) SLVOUT (54) SLW OUT (56) VG H2 PreDriver T.S.D VM 4 SLPG (53) RLV1 (50) D etect Level RLV2 (48) -+ VG S elector VG 3 FLT1 (46) F LT2 (47) SPCOM (34) C harge Pump Spindle BEMF Detector PW M Switching Predriver SPVM (37) SPUOUT (25) SPVOUT (27) S PW OUT (29) C ommutation Logic & Start-Up Logic M ask SET S lope Osc. Triangle Wave Generator S PPG (28) N .C. (4,6,11,13,23, 24,26,30,36,41, 43,55,57,58 ) MSK (38) FG (45) SLOPE (35) ISET (39) O SC (42) SGND (49) G ND (9) REV. B 4/4 ○Notes on the use (1) Absolute maximum ratings If the input voltage or the operating temperature range exceeds absolute maximum ratings, IC may be damaged. No destruction mode (e.g., short-circuiting or open) can be specified in that case. If such special mode as will exceed absolute maximum ratings is assumed, take the physical safety measures, such as a fuse. (2) Power supply lines The regenerated current by BEMF of the motor will return. Therefore, take measures, such as the insertion of a capacitor between the power supply and GND as the pass of the regenerated current. Determine the capacitance in full consideration of all the characteristics of the electrolytic capacitor, because the electrolytic capacitor may loose some capacitance at low temperatures. (3) Ground potential Ensure a minimum GND pin potential in all operating conditions. (4) Design for heat Use the design for heat that allows for a sufficient margin in light of the power dissipation (Pd) in actual using conditions. (5) Operation in strong magnetic field Use caution when using the IC in the strong magnetic field as doing so may cause the IC to malfunction. (6) ASO When using the IC, make settings so that the output transistors for the motor will not be used under conditions in excess of the absolute maximum ratings and ASO. (7) Thermal shutdown circuit This IC incorporates thermal shutdown circuit(TSD circuit). When the chip temperature becomes the one shown in below, TSD circuit operates and makes the coil output to motor open. It is designed to shut the IC off from runaway thermal operation. It is not designed to protect the IC or guarantee its operation. Do not continue to use the IC after operating this circuit or use the IC in an environment where the operation of this circuit is assumed. TSD ON temperature[℃] 175 (8) Ground wiring pattern When having both small signal and large current GND, it is recommended to isolate the two GND patterns, placing a single ground point at the application's reference point so that the pattern wiring resistance and voltage variations caused by large currents do not cause voltage variations of the small signal GND. Be careful not to change the GND wiring pattern of any external parts, either. (typ.) Hysteresis temperature 20 [℃ ] (typ.) REV. B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). 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