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| Ordering number: EN 5132 Monolithic Digital IC LB1952, 1952M 3-phase Brushless Motor Driver for VCR Capstans Functions Package Dimensions unit : mm . 3-phase full-wave current linear drive system . Torque ripple correction circuit built in (variable correction . factor) limiting circuit built in . Currentstage upper/lower oversaturation prevention circuit Output in (no . builtamplifierexternalincapacitor required) FG built . Thermal shutdown circuit built in 3206-QFP34H [LB1952] SANYO : QFP34H 3129-MFP36S [LB1952M] SANYO : MFP36S SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 92595HA (II) No.5132-1/11 LB1952, 1952M Specifications Absolute Maximum Ratings at Ta = 25 C Parameter Maximum supply voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VS max IO max Arbitrarily large heat sink Pd max Topr Tstg Independent IC Independent IC LB1952 LB1952M LB1952 Conditions Ratings 7 24 1.3 12.5 0.77 0.95 -20 to +75 -55 to +150 Unit V V A W W W C C Allowable Operating Ranges at Ta = 25 C Parameter Supply voltage Hall input amplitude GSENSE input range Symbol VS VCC VHALL VGSENSE Between Hall inputs Relative to control system GND Conditions Ratings 5 to 22 4.5 to 5.5 30 to 80 -0.20 to +0.20 Unit V V mV0-P V Electrical Characteristics at Ta = 25 C, VCC = 5 V, VS = 15 V Parameter VCC supply current [Output] Output saturation voltage VOsat2 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 Limit] LIM current limit offset voltage LIM pin input bias current LIM pin current limit level [Hall Amplifier] Hall amplifier input offset voltage Hall amplifier input bias current Hall amplifier common-mode input voltage [TRC] Torque ripple correction factor ADJ pin voltage Voff (LIM) Ib (LIM) I lim With Rf = 0.5 , VCTL = 5 V, IO ^ 10 mA, Hall input logic fixed, (u, v, w = H, H, L) With VCTL = 5 V, CTLREF : Open, VLIM = 0 V With Rf = 0.5 , VCTL = 5 V, VLIM = 2.06 V, Hall input logic fixed, (u, v, w = H, H, L) 140 -2.5 830 900 970 200 260 mV A mA Ioleak VFSR Ib (FSR) VCREF VCREFIN Ib (CTL) VCTL (ST) Gm (CTL) 2.25 -5.0 2.05 1.50 With VCTL = 5 V, CTLREF : Open With Rf = 0.5 , VLIM = 5 V, IO ^ 10 mA, Hall input logic fixed, (u, v, w = H, H, L) With Rf = 0.5 , IO = 200 mA, Hall input logic fixed, (u, v, w = H, H, L) 2.00 0.46 2.50 Symbol ICC VOsat1 Conditions RL = (when stopped), VCTL = 0 V, VLIM = 0 V IO = 500 mA, Rf = 0.5 , Sink + Source VCTL = VLIM = 5 V (with saturation prevention) IO = 1.0 A, Rf = 0.5 , Sink + Source VCTL = VLIM = 5 V (with saturation prevention) min typ 12 2.1 2.6 max 18 2.6 3.5 1.0 2.75 Unit mA V V mA V A V V A V A/V 2.15 2.25 3.50 4.0 2.30 0.70 2.15 0.58 Voff (HALL) Ib (HALL) Vcm (HALL) -6 1.0 1.3 +6 3.0 3.3 mV A V TRC Vadj At bottom and peak in Rf waveform at IO = 200 mA (RF=0.5 , ADJ-OPEN) Note 2 2.37 9 2.50 2.63 % V Continued on next page. No.5132 - 2/11 LB1952, 1952M Continued from preceding page. Parameter [FG Amplifier] FG amplifier input offset voltage FG amplifier input bias current FG amplifier output saturation voltage FG amplifier common-mode input voltage [Saturation] Saturation prevention circuit lower set voltage [TSD] TSD operation temperature TSD temperature hysteresis width Symbol Voff (FG) Ib (FG) VOsat (FG) VCM (FG) Voltage between each Out and Rf at IO = 10 mA, Rf = 0.5 , VCTL = VLIM = 5 V (Design target) (Design target) Note 1 Note 1 At internal pull-up resistor load on sink side 0.5 Conditions min -8 -100 typ max +8 Unit mV nA V V 0.5 4.0 VOsat (DET) T-TSD TSD 0.175 0.25 0.325 V 180 20 C C Note 1: No measurements are performed for any values listed in the condition column as design targets. Note 2: The torque ripple correction factor is calculated using the Rf voltage waveform as follows. Hall input logic settings GND level Correction factor = 2 x (Vp - Vb) Vp + Vb x 100 (%) Truth Table & Control Function Source Sink 1 2 3 4 5 6 VW WV UW WU UV VU WV VW WU UW VU UV Hall input U H H H L L L V H L L L H H W L L H H H L FR H L H L H L H L H L H L Note: ``H'' in the FR column represents a voltage of 2.75V or more; ``L'' represents a voltage of 2.25V or less. (At VCC = 5 V) Note: ``H'' in the hall input columns represents a state in which ``+'' has a potential which is higher by 0.01 V or more than that of the ``-'' phase inputs. Conversely, ``L'' represents a state in which ``+'' has a potential which is lower by 0.01V or more than that of the ``-'' phase input. Note: Since 180 conduction is used as the drive system, other phases than the sink and source phases are turned off. No.5132 - 3/11 LB1952, 1952M Control Function & Current Limit Function Control characteristics Current limit characteristics Slope = 0.5 A/V typ Pin Functions The pin numbers in ( ) are for MFP. Pin name FR GND FGin (-) FGin (+) FG-OUT CTL CTLREF LIM FC Uin , Uin Vin+, Vin- Win+, Win- VCC VS ADJ + - Pin No. 1 (33) 2 (34) 5 (3) 6 (4) 8 (5) 9 (6) 10 (7) 11 (8) 12 (9) 13, 14 (10, 11) 15, 16 (12, 13) 17, 18 (14, 15) 19 (16) 22 (21) 23 (22) Function Forward/reverse select pin. The pin voltage selects forward/reverse. (Vth = 2.5 V typ at VCC = 5 V) GND for other than output transistor. Minimum potential of output transistor is at Rf pin. Input pin when FG amplifier is used with inverted input. Feedback resistor is connected between this pin and FG-OUT. Noninverting input pin when FG amplifier is used with differential input. Internal bias is not applied. FG amplifier output pin. Resistive load provided internally. Speed control pin. Control is exercised by constant-current drive with current feedback applied from Rf. Gm = 0.58 A/V typ at Rf=0.5 Control reference voltage pin. The voltage is set internally to approx. 0.43 x VCC but this can be varied by applying voltage through a low impedance (input impedance = approx. 4.3 k). Current limiting function control pin. The output current is varied linearly by this pin voltage; slope = 0.5 A/V typ at Rf = 0.5 . Speed control loop frequency characteristic correction pin U-phase Hall device input pin; logic ``H'' represent IN+ > IN-. V-phase Hall device input pin; logic ``H'' represent IN+ > IN-. W-phase Hall device input pin; logic ``H'' represent IN+ > IN-. Power supply pin for supplying power to all circuits except output section in IC; this voltage must be stabilized so as to eliminate ripple and noise. Output section power supply pin Pin for external adjustment of torque ripple correction factor. When this factor is to be adjusted, a voltage is externally applied to the ADJ pin through a low impedance. If the voltage applied is increased, the factor drops; conversely, if it is reduced, the factor rises. The factor varies between 0 and 2 times that of the open state. (The voltage is set to approx. VCC/2 internally, and the input impedance is approx. 5 k.) Output current detection pin. Current feedback is applied to the control section by connecting Rf between this pin and GND. The lower oversaturation prevention circuit and torque ripple correction circuit are activated in accordance with this pin voltage. Since the oversaturation prevention level is set with this voltage, the lower oversaturation prevention effect may deteriorate in the high current range if the Rf value is reduced to an extremely low level. The PWR and SENSE pins must always be connected. U-phase output pin V-phase output pin W-phase output pin (Built-in spark killer diode) Rf (PWR) Rf (SNS) 24 (23) 33 (31) Uout Vout Wout GSENSE 27 (26) 29 (27) 31 (28) 34 (32) GND sensing pin. By connecting this pin to the neighboring GND on the Rf resistor side of the motor GND wire which contains Rf, the effect that GND common impedance exerts on Rf can be eliminated. (This pin must not be left open.) No.5132 - 4/11 LB1952, 1952M Block Diagram Pin number inside ( ): for MFP Output stage Hall amplifier Combined output logarithmic compression unit Hall input combination unit (linear matrix) Logarithmic inverse transformation & differential distribution Upper saturation prevention control Control amplifier Differential distribution & torque ripple correction unit Drive distribution circuit & lower saturation prevention control Approx. 0.43 x VCC Feedback amplifier Forward/ reverse selection FG amplifier Reference voltage No.5132 - 5/11 LB1952, 1952M Pin Assignment [LB1952] (PACKAGE: QFP-34H-A) Top view Note: FRAME must be connected to GND for GND potential stabilization. Pd -- Ta Allowable power dissipation, Pd -- W Ambient temperature, Ta -- C No.5132 - 6/11 LB1952, 1952M Pin Assignment [LB1952M] (PACKAGE: MFP-36S-LF) Top view Note: Although there is no internal connections between the FRAME pin and GND, FRAME must be connected to GND externally for GND potential stabilization. Pd -- Ta Allowable power dissipation, Pd -- W Ambient temperature, Ta -- C No.5132 - 7/11 Forward/reverse instructing voltage supply pin Power GND GaAs is recommended as the Hall device. Hall output Vs Hall output ADJ voltage supply pin Sample Application Circuit [LB1952] LB1952, 1952M Hall bias resistor R is selected to match the sensor output. Hall output Vcc Hall input Current limit setting voltage supply pin FG output pin CTL REF voltage supply pin Torque instructing voltage supply pin No.5132 - 8/11 Note: The constants provided in this sample application circuit are provided by way of example and are not intended to guarantee the characteristics. Forward/reverse instructing voltage supply pin Power GND ADJ voltage supply pin Vs GaAs is recommended as the Hall device. Sample Application Circuit [LB1952M] Hall output Hall output LB1952, 1952M Hall output Hall input Vcc Current limit setting voltage supply pin CTL REF voltage supply pin Torque instructing voltage supply pin FG output pin Hall bias resistor R is selected to match the sensor output. Note: The constants provided in this sample application circuit are provided by way of example and are not intended to guarantee the characteristics. No.5132 - 9/11 LB1952, 1952M Pin Input/Output Equivalent Circuit Pin name Uin (+) Uin (-) Vin (+) Vin (-) Win (+) Win (-) Each (+) input Input/Output Equivalent Circuit Each (-) input U-OUT V-OUT W-OUT VS Rf (POWER) Rf (SENSE) Each output Lower oversaturation prevention circuit input block CTL LIM CTLREF FR ADJ Continued on next page. No.5132 - 10/11 LB1952, 1952M Continued from preceding page. Pin name FGin (-) FGin (+) Input/Output Equivalent Circuit FGOUT FC 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: 1 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: 2 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 September, 1995. Specifications and information herein are subject to change without notice. No.5132 - 11/11 |
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