LB1980H_07

Ordering number : EN5974B Monolithic Digital IC LB1980H Overview For VCR Capstan Motors 3-Phase Brushless Motor Driver The LB1980JH is a 3-phase brushless motor driver that is particularly appropriate for VCR capstan motor drivers. Functions • 3-phase full-wave drive • Built-in torque ripple correction circuit (variable correction ratio) • Current limiter circuit • Upper and lower side output stage over-saturation prevention circuit that does not require external capacitors. • FG amplifier • Thermal shutdown circuit Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol VCC max VS max Maximum output current Allowable power dissipation IO max Pd max Mounted on a board * Independent IC Operating temperature Storage temperature Topr Tstg Conditions Ratings 7 24 1.3 1.81 0.77 -20 to 75 -55 to +150 Unit V V A W W °C °C * Mounted on a 76.1mm×114.3mm×1.6mm, glass epoxy printed circuit board. 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To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 62707 MS IM / 80906 / 13006 MH IM / O3098RM (OT) No.5974-1/7 LB1980H Allowable Operating Ranges at Ta = 25°C Parameter Supply voltage Symbol VS VCC Hall input amplitude GSENSE pin input range VHALL VGSENSE Between the hall inputs With respect to the control system ground Conditions Ratings 5 to 22 4.5 to 5.5 ±30 to ±80 -0.20 to +0.20 Unit V V mVo-p V Electrical Characteristics at Ta = 25°C, VCC = 5V,VS = 15V Parameter VCC supply current Outputs Output saturation voltage VO sat1 VO sat2 Output leakage current FR FR pin input threshold voltage FR pin input bias current Control CTLREF pin voltage CTLREF pin input range CTL pin input bias current CTL pin control start voltage CTL pin control Gm Current Limiter LIM current limit offset voltage LIM pin input bias current LIM pin current control level Hall Amplifier Hall amplifier input offset voltage Hall amplifier input bias current Hall amplifier common-mode input voltage range TRC Torque ripple correction ratio TRC For the high and low peaks in the Rf waveform when IO=200mA. (Rf=0.5Ω, with the ADJ pin open) *1 2.37 9 % Voff(HALL) IB(HALL) VCM(HALL) -6 1.0 1.3 +6 3.0 3.3 mA µA V Voff(LIM) IB(LIM) ILIM With Rf=0.5Ω, VCTL=5V, IO≥10mA, Hall input logic fixed (U, V, W=H, H, L) With VCTL=5V and the VCREF pin open With Rf=0.5Ω, VCTL=5V, VLIM=2.06V Hall input logic fixed (U, V, W=H, H, L) 140 -2.5 830 900 970 200 260 mV µA mA VCREF VCREFIN IB(CTL) VCTL(ST) Gm(CTL) With VCTL=5V and the CTLREF pin open With Rf=0.5Ω, VLIM=5V, IO≥10mA, Hall input logic fixed (U, V, W=H, H, L) With Rf=0.5Ω, ∆IO=200mA, Hall input logic fixed (U, V, W=H, H, L) 2.00 0.46 2.15 0.58 2.05 1.50 2.15 2.25 3.50 4.0 2.30 0.70 V V µA V A/V VFSR IB(FSR) 2.25 -5.0 2.50 2.75 V mA IO leak IO=500mA, Rf=0.5Ω, Sink+Source VCTL=VLIM=5V(With saturation prevention) IO=1.0mA, Rf=0.5Ω, Sink+Source VCTL=VLIM=5V(With saturation prevention) 2.1 2.6 2.6 3.5 1.0 V V mA Symbol ICC Conditions min RL=∞, VCTL=0V, VLIM=0V (Quiescent) Ratings typ 12 max 18 mA Unit ADJ pin voltage FG Amplifier FG amplifier input offset voltage FG amplifier input bias current FG amplifier output saturation voltage FG amplifier voltage gain FG amplifier common-mode input voltage Saturation Saturation prevention circuit lower side voltage setting TSD TSD operating temperature Hysteresis width VADJ 2.50 2.63 V Voff(FG) IB(FG) VO sat (FG) VG(FG) VGM(FG) Sink side, for the load provided by the internal pull-up resistor For the open loop state with f=10kHz -8 -100 +8 mV nA 0.5 41.5 0.5 44.5 47.5 4.0 V dB V VO sat(DET) The voltages between each OUT and Rf pair when IO=10mA, Rf=0.5Ω, and VCTL=VLIM=5V 0.175 0.25 0.325 V TSD ∆TSD Design target value *2 Design target value *2 180 20 °C °C Notes : *1. The torque ripple correction ratio is determined as follows from the Rf voltage waveform. *2. Parameters that are indicated as design target values in the conditions column are not tested. No.5974-2/7 LB1980H Vp Vb For each Hall logic setting Ground level Correction ratio = 25(Vp--Vb) 1005(%) Vp--Vb Package Dimensions unit : mm (typ) 3233B 2.0 Pd max -- Ta Allowable power dissipation, Pd max -- W 15.2 1.81 1.6 (6.2) 28 15 HEAT SPREADER 1.2 0.108 (4.9) 10.5 7.9 1 0.8 (0.8) 2.0 0.3 14 0.25 0.65 0.8 0.77 Independent IC 0.4 0.46 2.45max (2.25) 0 -20 Mounted on a 76.1mm×114.3mm×1.6 mm glass epoxy printed circuit board 0 20 40 60 75 80 100 ILB01757 Ambient temperature, Ta -- °C 2.7 0.1 SANYO : HSOP28H(375mil) Pin Assignment RF(PWR) FRAME GND UOUT VOUT WIN+ UIN+ WINVIN+ VCC 28 27 26 25 24 23 22 21 20 19 18 17 16 UIN- VIN- ADJ NC NC VS 15 LB1980H 1 WOUT 2 NC 3 NC 4 RF(SENSE) 5 GSENSE 6 FR 7 FRAME GND GND 8 FGIN- 9 FGIN+ 10 FGOUT 11 CTL 12 CTLREF 13 LIM 14 FC Top view No.5974-3/7 LB1980H Block Diagram FC 14 Output stage 22 VS UIN+ 15 U Hall input synthesis block (linear matrix) UIN- 16 + Synthesized output logarithmic compression block U Antilogarithm conversion and differential distribution 27 UOUT VIN+ 17 V VIN- 18 + V 28 VOUT WIN+ 19 W WIN- 20 + W Upper side saturation prevention control + gm 1 WOUT 24 Rf(PWR) 4 Rf(SENSE) + gm Differential distribution and torque ripple correction block CTL 11 CTLREF 12 About 0.435VCC LIMREF + Control amplifier + + Feedback amplifier Drive distribution circuit and lower side saturation prevention circuit 23 ADJ + LIM 13 5 GSENSE FR 6 Forward / reverse selection TSD FG amplifier 8 FGIN+ 9 FGIN+ GND 7 10 FGOUT VCC 21 Reference voltage Bandgap 1.2V No.5974-4/7 LB1980H Pin Function Pin No. 27 28 1 4 5 Pin Name UOUT VOUT WOUT Rf (SENSE) Rf (PWR) Function U phase output, Spark killer diodes are built-in. V phase output, Spark killer diodes are built-in. W phase output, Spark killer diodes are built-in. Output current detection. The control block current limiter operates using the resistor Rf connected between these pins and ground. Also, the lower side saturation prevention circuit and the torque ripple correction circuit operate based on the voltages across this resistor. It is especially important to note that, since the saturation prevention level is set using this voltage, the lower side saturation prevention circuit will become less effective in the high current region if the value of Rf is lowered excessively. Also, the PWR and SENSE pins must be connected together. 22 5 VS GSENSE Output block power supply Ground sensing. The influence of the common ground impedance on Rf can be excluded by connecting this pin to nearest ground for the Rf resistor side of the motor ground wiring that includes Rf. (This pin must not be left open.) 6 FR Forward / reverse selection. The voltage applied to this pin selects the motor direction (forward or reverse). (Vth=2.5V at VCC=5V (typical)) 23 ADJ Used for external adjustment of the torque ripple correction ratio. Apply a voltage externally with a low-impedance circuit to the ADJ pin to adjust the correction ratio. The correction ratio falls as the applied voltage is increased, and increases as the applied voltage decreases. The torque ripple correction ratio can be modified by factors in the range 0 to 2 times the ratio that applies when his pin is left open. (The pin voltage is set to about VCC / 2 internally, and the input impedance is about 5kΩ.) 7 GND Ground for all circuits other than the output transistors. The lowest potential of the output transistors is that of the Rf pin. 8 FGINInput used when the FG amplifier is used as an inverting input. A feedback resistor must be connected between FGOUT and this pin. VCC 24 4 27 28 1 22 Equivalent circuit VS VCC 150µA OUT 30kΩ 200Ω Lower side saturation prevention circuit input block VCC 10µA 200Ω Rf (SENSE) Rf (PWR) VCC VCC 200µA FR 6 VCC 20µA VCC ADJ 200Ω 1/2 VCC 23 10kΩ 6kΩ 10kΩ 500Ω 10kΩ 6kΩ 10kΩ 5µA 9 FGIN+ Non-inverting input used when the FG amplifier is used as a differential input amplifier. No bias is applied internally. FGIN(−) 9 FGIN(+) 8 300Ω 300Ω 10 FGOUT FG amplifier output. There is an internal resistive load. VCC VCC 2kΩ 300Ω VCC FGOUT 10 14 FC Speed control loop frequency characteristics correction. 10kΩ 14 FC Continued on next page. No.5974-5/7 LB1980H Continued from preceding page. Pin No. 11 Pin Name CTL Function Speed control input. The control implemented is fixed current drive controlled by current feedback from Rf. Gm=0.58 / V (typical) when Rf=0.5W CTL VCC VCC 10kΩ 12 CTLREF Equivalent circuit VCC 200µA max 12 CTLREF Control reference voltage. While this pin is set to about 0.43×VCC internally, this voltage can be modified by applying a voltage from a low-impedance circuit. (The input impedance is about 4.3kΩ). 11 200Ω 200Ω LIM 7.5kΩ 100µA 13 200Ω 13 LIM Current limiter function control. The output current can be varied linearly by applying a voltage to this pin. The slope is 0.5A / V (typical) when Rf=0.5Ω. 15 16 17 18 19 20 21 UIN+ UINVIN+ VINWIN+ WINVCC U phase Hall element inputs. Logic high is defined as states where IN+>IN-. V phase Hall element inputs. Logic high is defined as states where IN+>IN-. W phase Hall element inputs. Logic high is defined as states where IN+>IN-. Power supply for all internal blocks other than the output block. This voltage must be stabilized so that noise and ripple do not enter the IC. (+) input 15 17 19 (--) input 16 18 20 200Ω 100µA 200Ω Truth Table and Control Functions Source → Sink U Phase V → Phase W 1 Phase W → Phase V Phase U → Phase W 2 Phase W → Phase U Phase U → Phase V 3 Phase V → Phase U Phase W → Phase V 4 Phase V → Phase W Phase W → Phase U 5 Phase U → Phase W Phase V → Phase U 6 Phase U → Phase V L H L L H H L L H H L H H L L H H L Hall input V W H L H L H L H L H L H L FR Note: In the FR column, “H” refers to a voltage of 2.75V or higher, and “L” refers to 2.25V or lower (when VCC=5V.) Note: In the Hall input column, “H” refers to the state in the corresponding phase where the +input is at a potential at least 0.01V higher than the -input, and “L” refers to the state where the -input is at a potential at least 0.01V higher than the +input. Note: Since the drive technique adopted is a 180° technique, phases other than the sink and source phase do not turn off. Control Function and Current Limiter Function VLIM=5V CTLREF: OPEN VCTL=5V CTLREF: OPEN IOUT Gm1=0.58A / V typ 2.10V typ IOUT Slope: 0.50A / V typ 0 1 2 3 VCTL 4 5 0 1 200mA / V typ 2 3 VLIM 4 Control Characteristics Control Limiter Characteristics No.5974-6/7 LB1980H Application Circuit Example VCC GaAs Hall devices are recommended. Hall output Hall output L 0.1µF 0.5Ω Power system ground L L 0.1µF Voltage applied to the ADJ pin VS Hall output R 0.1µF Hall input VCC 28 27 26 25 24 23 22 21 20 19 18 17 16 15 FRAME GND VOUT UOUT VS RF(PWR) WIN+ RF(SENSE) GSENSE LB1980H FRAME GND CTLREF FGOUT FGIN+ FGINGND CTL LIM 13 WOUT NC NC FR 1 2 3 4 5 6 7 8 9 10 11 12 14 0.1µF Current limiter setting voltage pin CTLREF voltage pin 0.1µF 1kΩ 75kΩ MR FC UIN+ WIN- VIN+ VCC UIN- VIN- ADJ NC NC Torque command voltage pin Forward / reverse command voltage pin VCC / 2 bias SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. 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SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 2007. Specifications and information herein are subject to change without notice. PS No.5974-7/7