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| Ordering number : ENA0707 LB11970FV Overview Monolithic Digital IC For Fan Motor Single-phase Full-wave Driver The LB11970FV is a single-phase full-wave driver for fan motor. Functions * Single-phase full-wave drive (16V to 1.2A output transistor incorporated) * Variable speed function using thermistor input and external signal incorporated Enables silent and low-vibration variable speed control through direct PWM control with separately-excited upper Tr * Current limiter circuit (limit at IO=480mA with RL=1 connection, the limiter value determined with Rf) * Kick-back absorption circuit incorporated * Low-consumption, low-loss, and low-noise drive enabled by the soft switching circuit during phase shift * Regeneration Di incorporated with less external parts * HB incorporated * Lock protection and automatic reset functions incorporated * FG (rotation detection) output * Thermal shutdown circuit incorporated Specifications Absolute Maximum Ratings at Ta = 25C Parameter VCC maximum supply voltage VM maximum supply voltage OUT pin maximum output current OUT pin output withstand voltage Symbol VCC max VM max IOUT max VOUT max Conditions Ratings 17 17 1.2 18 Unit V V A V Continued on next page. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. 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. 30707 MS IM B8-8588, B8-8433 No.A0707-1/7 LB11970FV Continued from preceding page. Parameter HB maximum output current VTH, RMI input pin withstand voltage P-IN input pin withstand voltage FG output pin output withstand voltage FG output current Allowable power dissipation Operating temperature range Storage temperature range HB VTH RMI max VP-IN max VFG max IFG max Pd max Topr Tstg Specified substrate * Symbol Conditions Ratings 10 7 VCC 18 10 0.8 -30 to 90 -55 to 150 Unit mA V V V mA W C C * Specified substrate: 30mmx30mmx0.8mm, paper phenol. Recommended Operating Ranges at Ta = 25C Parameter VCC supply voltage VM supply voltage VTH, RMI input level voltage range P-IN input level voltage range Triangular wave input range Hall input common phase input voltage range Symbol VCC VM VTH, RMI VP-IN VRM VICM Conditions Ratings 4.5 to 16 3.5 to 16 0 to 6 0 to VCC 0.5 to 4 0.2 to 3 Unit V V V V V V Electrical Characteristics at Ta = 25C, VCC = 12V, Rf = 0, unless otherwise specified. Parameter Circuit current Symbol ICC1 ICC2 HB voltage 6VREG voltage CT pin H level voltage CT pin L level voltage CT pin charge current CT pin discharge current CT charge/discharge current ratio OUT output L saturation voltage OUT output H saturation voltage Current limiter Hall input sensitivity FG output pin L voltage FG output pin leak current Overheat protection circuit VHB V6VREG VCTH VCTL ICT1 ICT2 RCT VOL VOH VRF VHN VFG IFGL THD Zero peak value (including offset and hysteresis) IFG=5mA VFG=7V * Design guarantee value 180 0.2 0.3 30 V A C IO=200mA IO=200mA, Rf=1 During drive During lock protection IHB=5mA I6VREG=5mA Conditions min 12 11 1.12 5.85 3.4 1.4 1.8 0.18 8 Ratings typ 15 14 1.22 5.95 3.6 1.6 2.2 0.22 10 0.1 0.6 480 10 20 max 18 17 1.32 6.10 3.8 1.8 2.6 0.26 12 0.2 0.8 V V mV mV mA mA V V V V A A unit *: Design target value and no measurement was made. No.A0707-2/7 LB11970FV Package Dimensions unit : mm (typ) 3338 1.0 Pd max - Ta 8.0 Allowable Power Dissipation, Pd max - W Mounted on a board: 30mmx30mmx0.8mm, paper phenol 18 10 0.8 4.4 6.4 0.6 0.5 0.4 0.38 1 0.8 (0.8) 0.3 9 0.15 1.7MAX 0.2 (1.5) 0 -30 -10 10 30 50 70 90 110 Ambient Temperature, Ta -C ILB01811 SANYO : SSOP18(225mil) Pin Assignment 0.1 OUT2 VM VCC WH WL VTH RMI P-IN CPWM 1 2 3 4 5 6 7 8 9 18 P-GND 17 OUT1 16 S-GND 15 6VREG LB11970FV 14 CT 13 IN12 HB 11 IN+ 10 FG Top view PGND: Motor system GND SGND: Control system GND No.A0707-3/7 LB11970FV Equivalent Circuit Diagram FG RMI VTH H: Rotation mode Thermal shat down VCC Current control circuit VM Constant voltage 6VREG 1.25V Controller Delay circuit CPWM L: Regeneration mode P-IN Comparator OUT HB HALL IN+ M Delay circuit OUT Hysteresis AMP Charge/discharge circuit SGND CT P-IN RMI VTH Oscillation IN- WH WL CPWM PGND Truth Table VTH L (OPEN) H PIN L L L L H H INH L H L H L H L IN+ L H L H L H L H H H L L CT OUT1 H L OFF L OFF L OFF L OUT2 L H L OFF L OFF L OFF FG L OFF L OFF L OFF L OFF Output regeneration mode with external signal Lock protection Running - regeneration Mode Running - drive VTH, P-IN = L means VTH, P-IN < CPWM VTH, P-IN = H means VTH, P-IN > CPWM No.A0707-4/7 LB11970FV Application Circuit Example *4 Rf CM VCC HB *8 H *5 *7 IN+ FG 6VREG *3-3 R6 R4 PIN *3-1 R5 PWM-IN R2 R7 RTU *3 TH CPWM CP=100pF *f=25kHz *6 R3 CT CT=0.47 to 1F SGND R8 VTH PGND *1 R2 WL R3 WL RMI *3-2 OUT2 R1 WH R1 WH OUT1 C=2200 to 4700pF R=20 to 50 INVM *2 No.A0707-5/7 LB11970FV *1. Power supply - GND wiring PGND is connected to the motor power system while SGND is connected to the control circuit power system. Wiring is made separately for PGND and SGND, and external parts of each control system are connected to SGND. *2. Power stabilization capacitor for regeneration CM capacitor is a power stabilizing capacitor for PWM drive and kick-back absorption and has the capacitance of 4.7F or more. Since this IC performs current regeneration with the lower Tr through switching of the upper Tr, connect CM with the thick and shortest possible pattern between VM and PGND. *3. Setting of the temperature detection variable speed Setting of the triangular wave oscillation voltage The rotation speed variable range for the temperature is set with the triangular wave oscillation voltage. There are two setting methods as follows: 3-1 3-2 The upper voltage (VCPH) of triangular wave is determined by V[voltage of the R1 connection counterpart]x (R2/(R1+R2)) and the lower voltage (VCPL) of triangular wave is determined by Vx ((R2//R3) / (R1+R2//R3)). The upper voltage (VCPH) of triangular wave is determined by Vx ((R2+R3) / (R1+R2+R3)) and the lower voltage (VCPL) of triangular wave is determined by Vx (R2/(R1+R2)). Setting of the thermistor The resistance (RTU from VCC or 6VREG and the voltage generated through division of thermistor (TH) are input in the VTH pin. When the voltage at the VTH pin drops below VCPL due to temperature change, the full speed (thermistor input speed control side only) is obtained. To set the full speed with the thermistor tripping, connect each pin of 3-3 to VCC and each input voltage is generated by divided resistance from VCC. When the thermistor trips and the VTH pin is pulled up to VCC, the full speed (thermistor input speed control side only) is obtained. *4. Setting the current limiter The current limiter is activated when the voltage between current detection resistors exceeds 0.48V between VCC and VM. The current limiter is activated at IO = 480mA when RL = 1. Setting is made with the Rf resistance. Short-circuit VCC and VM when the current limiter is not to be used. When 12V is used, the current limiter must be applied at 1A or less if the coil resistance is 10 or less. *5. Hall input Wiring must be as short as possible to prevent carrying of noise. The Hall input circuit is a comparator with hysteresis of 20mV. The Hall input level is recommended to be three times (60mVp-p) or more of this hysteresis. *6. Capacitor to set the PWM oscillation frequency Oscillation with f = 25kHz occurs at CP = 100pF and PWM voltage width of 1.6V, and becomes the reference frequency of PWM. *7. FG output This is the open collector output, enabling detection of the rotation speed using the FG output corresponding to the phase shift. Keep this output OPEN when not used. *8. HB pin Hall element bias pin, which is a 1.22V constant-voltage output pin *9. RMI pin Minimum speed setting pin for thermistor speed control, which must be pulled up with 6 VREG when not used. By connecting the capacitor, the time to ignore thermistor input at startup can be set. *10. PIN pin Direct PWM speed control pin. Pull down the P-IN input to GND when not using this pin. The lowest output DUTY setting is made with R4 and R5. Keep R5 open for stop with DUTY at 0%. No.A0707-6/7 LB11970FV 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. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. 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 March, 2007. Specifications and information herein are subject to change without notice. PS No.A0707-7/7 |
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