LB1980H

LB1980H SANYO | Alldatasheet

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Technical content

O3098RM (OT) No. 5974-1/8 Overview The LB1980H 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 Package Dimensions unit: mm 3233-HSOP28H SANYO: HSOP28H [LB1980H] LB1980H SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN Three-Phase Brushless Motor Driver for VCR Capstan Motors Monolithic Digital IC Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 products described or contained herein. Allowable power dissipation, Pdmax — W Ambient temperature, Ta — °C Independent IC

Absolute Maximum Ratings at Ta = 25°C Allowable Operating Ranges at Ta = 25°C Electrical Characteristics at Ta = 25°C, VCC = 5 V, VS = 15 V Notes :1.The torque ripple correction ratio is determined as follows from the Rf voltage waveform. Continued on next page. 2.Parameters that are indicated as design target values in the conditions column are not tested. No. 5974-2/8 LB1980H Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max 7 V VS max 24 V Maximum output current IO max 1.3 A Mounted on a 71.6 · 114.3 · 1.6 mm glass Epoxy printed 1.81 WAllowable power dissipation Pd max circuit board Independent device 0.77 W Operating temperature Topr –20 to + 75 °C Storage temperature Tstg –55 to + 150 °C Parameter Symbol Conditions Ratings Unit Supply voltage VS 5 to 22 V VCC 4.5 to 5.5 V Hall input amplitude VHALL Between the Hall inputs ±30 to ±80 mVo-p GSENSE pin input range VGSENSE With respect to the control system ground –0.20 to + 0.20 V Parameter Symbol Conditions Ratings Unit min typ max VCC supply current ICC RL = ¥ , VCTL = 0 V, VLIM = 0 V (Quiescent) 12 18 mA [Outputs] VO sat1 IO = 500 mA, Rf = 0.5 Ω , Sink + Source 2.1 2.6 V Output saturation voltage VCTL = VLIM = 5 V (With saturation prevention) VO sat2 IO = 1.0 A, Rf = 0.5 Ω , Sink + Source 2.6 3.5 VVCTL = VLIM = 5 V (With saturation prevention) Output leakage current IO leak 1.0 mA [FR] FR pin input threshold voltage V FSR 2.25 2.50 2.75 V FR pin input bias current IB (FSR) –5.0 mA [Control] CTLREF pin voltage V CREF 2.05 2.15 2.25 V CTLREF pin input range VCREFIN 1.50 3.50 V CTL pin input bias current IB (CTL) With VCTL = 5 V and the CTLREF pin open 4.0 mA CTL pin control start voltage VCTL (ST) With Rf = 0.5 Ω , VLIM = 5 V, IO ‡ 10 mA, 2.00 2.15 2.30 VHall input logic fixed (U, V, W = H, H, L) CTL pin control Gm Gm (CTL) With Rf = 0.5 Ω , ∆IO = 200 mA, 0.46 0.58 0.70 A/VHall input logic fixed (U, V, W = H, H, L) [Current Limiter] LIM current limit offset voltage Voff (LIM)With Rf = 0.5 Ω , VCTL = 5 V, IO ‡ 10 mA, 140 200 260 mVHall input logic fixed (U, V, W = H, H, L) LIM pin input bias current IB (LIM) With VCTL = 5 V and the VCREF pin open –2.5 mA LIM pin current control level ILIM With Rf = 0.5 Ω , VCTL = 5 V, VLIM = 2.06 V, 830 900 970 mAHall input logic fixed (U, V, W = H, H, L) [Hall Amplifier] Hall amplifier input offset voltage Voff (HALL) –6 +6 mV Hall amplifier input bias current IB (HALL) 1.0 3.0 mA Hall amplifier common-mode input voltage rangeVCM (HALL) 1.3 3.3 V [TRC] For the high and low peaks in the Torque ripple correction ratio TRC Rf waveform when IO = 200 mA. 9 % (Rf = 0.5 Ω , with the ADJ pin open)*1 ADJ pin voltage VADJ 2.37 2.50 2.63 V [FG Amplifier] FG amplifier input offset voltage Voff (FG) –8 +8 mV FG amplifier input bias current I B (FG) –100 nA FG amplifier output saturation voltage VO sat (FG) Sink side, for the load provided by the 0.5 Vinternal pull-up resistor FG amplifier voltage gain VG (FG) For the open loop state with f = 10 kHz 41.5 44.5 47.5 dB FG amplifier common-mode input voltage VGM (FG) 0.5 4.0 V

Continued from preceding page. 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. Truth Table and Control Functions No. 5974-3/8 LB1980H Parameter Symbol Conditions Ratings Unit min typ max [Saturation] Saturation prevention circuit lower The voltages between each OUT and side voltage setting VO sat (DET) Rf pair when IO = 10 mA, Rf = 0.5 Ω , and 0.175 0.25 0.325 V VCTL = VLIM = 5 V [TSD] TSD operating temperature TSD Design target value*2 180 °C Hysteresis width ∆TSD Design target value*2 20 °C Correction ratio =2 · (Vp – Vb) 100 · (%)V p – Vb For each Hall logic setting Ground level Source fi Sink Hall input FR U V W Phase V fi Phase W H H L H Phase W fi Phase V L Phase U fi Phase W H L L H Phase W fi Phase U L Phase U fi Phase V H L H H Phase V fi Phase U L Phase W fi Phase V L L H H Phase V fi Phase W L Phase W fi Phase U L H H H Phase U fi Phase W L Phase V fi Phase U L H L H Phase U fi Phase V L Note:In the FR column, “H” refers to a voltage of 2.75 V or higher, and “L” refers to 2.25 V or lower (when VCC = 5 V.) Note:In the Hall input column, “H” refers to the state in the corresponding phase where the + input is at a potential at least 0.01 V higher than the – input, and “L” refers to the state where the – input is at a potential at least 0.01 V 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 Control Characteristics Control Limiter Characteristics Slope: 0.50 A/V (typical) IOUT IOUT

Pin N o. Pin Function Equivalent circuit 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 V CC /2 internally, and the input impedance is about 5 kΩ .)

23 ADJ

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. U phase output V phase output (Spark killer diodes are built-in.) W phase output No. 5974-4/8 LB1980H U OUT VOUT W OUT Rf (SENSE) Rf (PWR) 22 VS 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.)

5 GSENSE

Forward/reverse selection. The voltage applied to this pin selects the motor direction (forward or reverse). (Vth = 2.5 V at V CC = 5 V (typical)) 6 FR Ground for all circuits other than the output transistors. The lowest potential of the output transistors is that of the Rf pin.7 GND Input used when the FG amplifier is used as an inverting input. A feedback resistor must be connected between FG OUT and this pin.

8 FG IN+

Noninverting input used when the FG amplifier is used as a differential input amplifier. No bias is applied internally.9 FG IN– FG amplifier output. There is an internal resistive load.10 FG OUT Speed control loop frequency characteristics correction.14 FC Continued on next page. OUT Lower side saturation prevention circuit input block

Continued from preceeding page. Pin Assignment Pin N o. Pin Function Equivalent circuit 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 4.3 kΩ ). CTLREF12 CTL Speed control input. The control implemented is fixed current drive controlled by current feedback from Rf. Gm = 0.58/V (typical) when Rf = 0.5 Ω LIM Current limiter function control. The output current can be varied linearly by applying a voltage to this pin. The slope is 0.5 A/V (typical) when Rf = 0.5 Ω . V CC 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. U IN+ U IN– VIN+ VIN– W IN+ W IN– 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–. No. 5974-5/8 LB1980H

No. 5974-6/8 LB1980H Control amplifier Reference voltage About 0.43 · VCC Forward/ reverse selection Differential distribution and torque ripple correction block Drive distribution circuit and lower side saturation prevention circuit Feedback amplifier FG amplifier Antilogarithm conversion and differential distribution Upper side saturation prevention control Output stage Hall input synthesis block (linear matrix) Synthesized output logarithmic compression block

Sample Application Circuit No. 5974-7/8 LB1980H GaAs Hall devices are recommended. Hall output Hall output Hall output Hall output VCC /2 bias Power system ground Voltage applied to the ADJ pin Current limiter setting voltage pin CTLREF voltage pin Torque command voltage pin Forward/reverse command voltage pin

PS No. 5974-8/8 LB1980H This catalog provides information as of October, 1998. Specifications and information herein are subject to change without notice. Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics,and functions of the described products in the independent state,and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer’s products or equipment. 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. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification” for the SANYO product that you intend to use. 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.