Ordering number : EN5653 Monolithic Digital IC LB1916 CD-ROM Spindle Motor Driver Overview The LB1916 is a 3-phase motor driver that is optimal for driving CD-ROM spindle motors. Functions and Features • 3-phase brushless motor driver • 120° voltage linear drive control • V-type input used for the control voltage • Control gain switching supported • Pins for system control and control of acceleration and deceleration provided. • Start/stop pin provided. • Hall bias circuit Package Dimensions unit: mm 3219-QFP34H-C Allowable power dissipation, Pdmax – W [LB1916] Ambient temperature, Ta – °C SANYO: QFP34H-C Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Output voltage Output current Symbol Conditions Unit 14 VCC2 max 7.0 V VOU, V, W 13 V IOUT Allowable power dissipation Ratings VCC1 max Pd max Independent IC V 1.0 A 0.77 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Ratings Unit Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions VCC1 Supply voltage VCC2 VCREF input voltage VCREF 5 to 12.5 VCC1 ≥ VCC2 V 4.3 to 6.5 V VCC2/2±1.0 V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 53197HA(OT) No. 5653-1/7 LB1916 Electrical Characteristics at Ta = 25°C, VCC1 = 12 V, VCC2 = 5 V Parameter Supply current drain (ICC for VCC1) Symbol Conditions Ratings min typ Unit max ICC1 VC = 2.5 V, VCREF = 2.5 V, RL = ∞, VS/S = 5 V, VRF = GND 17 30 mA ICC2 VC = 2.5 V, VCREF = 2.5 V 7.5 10.5 mA ICC3 VC = 2.5 V, VCREF = 2.5 V, RL = ∞, VS/S = 0 V, VRF = GND 0.9 3 mA VO(sat)1 IOUT = 0.4 A, sink + source 1.6 2.2 V VO(sat)2 IOUT = 0.8 A, sink + source 2.0 3.0 V VO(sus) IOUT = 20 mA, * 14 VC = 2.5 V, VCREF = 2.5 V 5.7 6.0 6.3 V +5 mV 5 µA [Drive Block] Output saturation voltage Output TRS sustainable voltage Output center voltage Hall amplifier input offset voltage Hall amplifier input bias current VOQ VH offset V –5 IH bias 1 Hall amplifier common-mode input voltage range VHch 1.3 Hall input/output voltage gain VGHO 38 41 26 Control - output drive gain 1 Control - output channel difference 1 Control - output drive gain 2 Control - output channel difference 2 Input dead band voltage Input bias current 1 VGCO1 RZ1 = RZ2, GC1 = L, GC2 = L 23 ∆VGCO1 RZ1 = RZ2, GC1 = L, GC2 = L –1.5 VGCO2 RZ1 = RZ2, GC1 = L, GC2 = H 29 ∆VGCO2 RZ1 = RZ2, GC1 = L, GC2 = H –1.9 VDZ IB SERVO RZ1 = RZ2, GC1 = L, GC2 = H VO (voltage between out and OUT) = 0.1 V S/S pin high-level voltage VS/S H S/S pin low-level voltage VS/S L Inputs are CMOS level, (See Note.) S/S pin Vth = VCC2/2 Gain control 1 high-level voltage VGC1 H Inputs are CMOS level, (See Note.) GC1 pin Vth = 2.0 V Gain control 1 low-level voltage VGC1 L Inputs are CMOS level, (See Note.) GC1 pin Vth = 2.0 V Gain control 2 high-level voltage VGC2 H Inputs are CMOS level, (See Note.) GC2 pin Vth = 2.0 V Gain control 2 low-level voltage VGC2L Inputs are CMOS level, (See Note.) GC2 pin Vth = 2.0 V V 44 dB +1.5 dB +1.9 dB ±50 mV 500 nA dB 32 ±24 VC = 1.0 V Inputs are CMOS level, (See Note.) S/S pin Vth = VCC2/2 2.2 dB 4.0 V 1.0 4.0 V V 1.0 4.0 V V 1.0 V S/S pin input current IS/S Input voltage = 5 V 50 100 µA Gain control 1 and 2 current IGC Input voltage = 5 V 53 110 µA 0.24 0.5 V 7 V 1.2 V Rotation output saturation voltage V(sat)H.FG1, 2 IO = –5 mA V(sus)H.FG1, 2 * Hall bias voltage VH± IO = 5 mA, RH = 200 Ω 0.7 4.0 CTRL pin high-level voltage VS/S H CTRL1 and CTRL2 are common, Inputs are CMOS level, (See Note.) CTRL pin Vth = 2.5 V CTRL pin low-level voltage VS/S L CTRL1 and CTRL2 are common, Inputs are CMOS level, (See Note.) CTRL pin Vth = 2.5 V CTRL input pin ICTRL Input voltage = 5 V Thermal shutdown operating voltage TSD * ∆TSD * Thermal shutdown hysteresis 150 0.97 V 1.0 V 53 110 µA 180 210 °C 15 °C Note: Items marked with an asterisk are design target values and are not tested. No. 5653-2/7 LB1916 Hall Logic Truth Table Source → Sink 1 2 3 4 5 6 W→V V→W W→U U→W V→W W→V U→V V→> U V→U U→V U→W W→U Mode Switching Truth Table CTRL0 CTRL1 Mode L L Control Forward L H Control Reverse H L Acceleration H H Deceleration Hall input UIN VIN WIN H H L H L L L L H L H L H L H L H H Forward/reverse control Forward Reverse The low level is 0 to 1.0 V Forward The high level is 4.0 V or higher Reverse Forward Reverse Forward Reverse Forward Reverse An input “H” state is defined as UIN1 > UIN2, VIN1 > VIN2, and the potential difference is at least 0.2 V. When VC > VCREF: Forward rotation When VC < VCREF: Reverse rotation Pin Assignment VCREF No. 5653-3/7 LB1916 Peripheral Circuit Example VCREF Block Diagram VCREF Absolute value detector Start/stop Thermal shutdown Mode selector Gain selector 0/6 dB Hall amp & Matrix & Forward/reverse selector Hall bias No. 5653-4/7 LB1916 Pin Functions Pin No. Pin Pin voltage Pin function 3, 4, 20, 21 GND • GND 23 22 19 UOUT VOUT WOUT • Outputs • Connect these pins to the motor. 17 Rf • Ground for the output transistors • The output current can be detected as a voltage by connecting a resistor between the Rf pin and ground. This can then be used to implement overcurrent protection. 18, 24, 7 NC • No connection 16 VCC2 15 14 Z1 Z2 13 12 VC VCREF 11 10 GC1 GC2 4.3 to 6.5 V Equivalent circuit • Power supply for circuits other than the output block • The power supply provided by this pin must be well stabilized so that noise does not occur. • Connections for the resistors that set the front-end amplifier gain • Z1 and Z2 are common, and have a resistance of between a few tens of kΩ and a few hundreds of kΩ. • The gain is about 6 dB. • VC is the speed control pin. When VC > VCREF: Forward rotation VCC2 When VC < VCREF: Reverse rotation ——— ±1.0 The output voltage is controlled by the V voltage. C 2 • VCREF determines the motor control stop voltage. Normally, this will be VCC2/2. 0 to VCC2 • I/O gain switching input • GC1 switches Z1 and Z2 for the front end amplifier. When GC1 is low, Z1 is selected, and when GC1 is high, Z2 is selected. GC2 switches the amplifier in the second stage. Continued on next page. No. 5653-5/7 LB1916 Continued from preceding page. Pin No. Pin Pin voltage Pin function 9 8 CTRLφ CTRL1 0 to VCC2 • Operating mode switching input • These pins select control, acceleration, or deceleration according to the mode switching truth table. 6 S/S 0 to VCC2 • Apply a high level to the S/S pin for start, and a low level for stop. • The threshold is VCC2/2. 5 FC 2 1 34 33 32 31 WIN2 WIN1 VIN1 VIN2 UIN2 UIN1 1.3 to 2.2 V 30 29 VH+ VH– 2.4 V 1.4 V Equivalent circuit • Oscillation can be prevented by connecting a capacitor between the FC pin and ground to lower the I/O gain frequency characteristics. • W phase Hall element inputs Logic high is when WIN1 > WIN2. • V phase Hall element inputs Logic high is when VIN1 > VIN2. • U phase Hall element inputs Logic high is when UIN1 > UIN2. • Hall element power supply There is a potential difference of 1.0 V between VH+ and VH–. Continued on next page. No. 5653-6/7 LB1916 Continued from preceding page. Pin No. Pin Pin voltage Pin function 28 27 HFG2 HFG1 0 to VCC2 • Hall FG pins • The Hall waveform is modified and used as FG pulses. • The phase relationship between HFG1 and HFG2 is used as a forward/reverse signal. 26 CL 0 to VCC2 • The current limiter operates when the Rf pin voltage reaches the voltage on the CL pin. The CL potential is determined externally. 25 VCC1 5 to 12.5 V • Power supply for the output block • The power supply provided to this pin must be well stabilized so that noise does not occur. Equivalent circuit ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of May, 1997. Specifications and information herein are subject to change without notice. No. 5653-7/7