LB11967V

Ordering number : EN8362C Monolithic Digital IC LB11967V Overview For Variable Speed Fan Motor Single-Phase Full-Wave Pre-Driver The LB11967V is a single-phase bipolar variable speed fan motor pre-driver that works with an external PWM signal. A highly efficient, quiet and low power consumption motor driver circuit, with a large variable speed, can be implemented by adding a small number of external components. This device is optimal for driving large scale fan motors (with large air volume and large current) such as those used in servers and consumer products. Functions • Pre-driver for single-phase full-wave drive ⇒ PNP-EMOS is used as an external power Transistor, enabling high-efficiency low-consumption drive by means of the low-saturation output and single-phase full-wave drive. (PMOS-NMOS also applicable) • External PWM input enabling variable speed control ⇒ Separately-excited upper direct PWM (f = 25kHz) control method, enabling highly silent speed control • Compatible with 12V, 24V, and 48V power supplies • Current limiter circuit incorporated ⇒ Chopper type current limit at start • Reactive current cut circuit incorporated ⇒ Reactive current before phase change is cut to enable silent and low-consumption drive. • Minimum speed setting pin ⇒ Minimum speed can be set with external resistor. The start assistance circuit enables start at extremely low speed. • Constant-voltage output pin for Hall bias • Lock protection and automatic reset functions incorporated • (Rotation speed detection), RD (Lock detection) output 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. 61610 SY/91708 MS / 72308 MS 20080703-S00002 / 92706 / 81005 SY PC No.8362-1/9 LB11967V Specifications Maximum Ratings at Ta = 25°C Parameter VCC maximum supply voltage OUT pin maximum output current OUT pin output withstand voltage HB maximum output current VTH input pin withstand voltage RD/FG output pin output withstand voltage RD/FG output current Allowable power dissipation Operating temperature range Storage temperature range IRD/IFG max Pd max Topr Tstg Mounted on a specified board* 10 800 -30 to +95 -55 to +150 mA mW °C °C Symbol VCC max IOUT max VOUT max IHB max VVTH max VRD/VFG max Conditions Ratings 18 50 18 10 8 18 Unit V mA V mA V V *Specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board. Recommended Operating Conditions at Ta = 25°C Parameter VCC supply voltage VTH input level voltage range Hall input common phase input voltage range Symbol VCC VTH VICM Full speed mode Conditions Ratings 6 to 16 0 to 7 0.2 to 3 Unit V V V Electrical Characteristics at Ta = 25°C, VCC = 12V, unless otherwise specified. Parameter Circuit current Symbol ICC1 ICC2 6VREG voltage HB voltage VOVER voltage CPWM-H level voltage CPWM-L level voltage CPWM oscillation frequency CT pin H level voltage CT pin L level voltage ICT pin charge current ICT pin discharge current ICT charge/discharge current ratio OUT-N output voltage OUT-P sink current Hall input sensitivity RD/FG output pin L voltage RD/FG output pin leak current 6VREG VHB VVOVER VCRH VCRL FPWM VCTH VCTL ICT1 ICT2 RCT VON IOP VHN VRD/VFG IRDL/IFGL Zero peak value (including offset and hysteresis) IRD/IFG = 5mA VRD/VFG = 16V 0.15 0.3 30 V μA VCT = 1.2V VCT = 4.0V ICT1/ICT2 IO = 20mA C = 100pF During drive During lock protection I6VREG = 5mA IHB = 5mA IVOVER = 1mA Conditions min 6 6 5.80 1.05 12.0 4.35 1.45 18 3.4 1.4 1.6 0.16 8 4 15 Ratings typ 10 10 6.0 1.22 12.8 4.55 1.65 25 3.6 1.6 2.0 0.20 10 10 20 10 20 max 14 14 6.15 1.35 13.6 4.75 1.85 32 3.8 1.8 2.5 0.28 12 mA mA V V V V V kHz V V μA μA deg V mA mV Unit No.8362-2/9 LB11967V Package Dimensions unit : mm (typ) 3179C 1000 Pd max -- Ta Allowable power dissipation, Pd max -- mW Mounted on specified board: 114.3×76.1×1.6mm3 glass epoxy board 6.5 20 11 800 4.4 6.4 600 0.5 400 352 1 0.65 (0.33) 10 0.22 1.5max 0.15 200 (1.3) 0 --30 --10 10 30 50 70 90 110 Ambient temprature, Ta -- °C 0.1 PCA00204 SANYO : SSOP20(225mil) Pin Assignment OUT2P 1 OUT2N 2 VCC 3 VLIM 4 SENSE 5 RMI 6 VTH 7 CPWM 8 FG 9 RD 10 Top view 20 OUT1P 19 OUT1N 18 VOVER 17 SGND 16 6VREG 15 ROFF 14 CT 13 IN+ 12 HB 11 IN- LB11967V Truth Table During full-speed rotation INH L H L IN+ L H L H INH L H L H L H CT L OUT1P L OFF OFF OFF IN+ L H L H OUT1N L H L H OUT2P OFF L OFF OFF OUT2N H L H L FG L OFF L OFF OFF RD L Mode OUT1 → 2 drive OUT2 → 1 drive Lock protection VTH L CPWM H OUT1P L OFF OFF OFF OUT1N L H L H OUT2P OFF L OFF OFF OUT2N H L H L Mode OUT1 → 2 drive OUT2 → 1 drive During rotation Regeneration in lower Tr No.8362-3/9 CT Discharge circuit FG Block Diagram 0.47 to 1μF RD Discharge pulse VCC OUT1N 6VREG 6VREG OUT1P ROFF Controller Hall-Bias HB HALL IN+ OUT2N INHysteresis AMP LB11967V OUT2P Oscillation RMI VTH CPWM VLIM SENSE SGND No.8362-4/9 LB11967V Sample Application Circuit 1 (12V) CB=~0.022μF RB=10kΩ Vz=18V ROUT=100Ω SOP8901 RF RFG,RRD=10k~100kΩ VCC VOVER RD FG HB 6VREG H ININ+ SENSE VLIM 6VREG RMI ROFF OUT1P VTH OUT1N OUT2P CPWM CP=100pF 25kHz CT=0.47μF CT SGND OUT2N R=0~5kΩ PWM-IN No.8362-5/9 LB11967V Sample Application Circuit 2 (24V, 48V) RF VCC VOVER RD FG HB 6VREG SENSE VLIM H ININ+ 6VREG RMI ROFF OUT1P VTH OUT1N OUT2P CPWM CP=100pF CT SGND OUT2N PWM-IN No.8362-6/9 LB11967V *1. SGND is connected to the control circuit power supply system. *2. For the CM capacitor that is a power stabilization capacitor for PWM drive and for absorption of kick-back, the capacitance uses 0.1μF or more. In this IC, the lower Transistor performs current regeneration by means of switching of upper Transistor. Connect CM between VCC and GND with the thick pattern and along the shortest route. *3. Be sure to use the zener diode if kick-back causes excessive increase of the supply voltage because such increase damages IC. *4. Wiring need to be short to prevent carrying of the noise. If the noise is carried, insert a capacitor between IN+ and IN-. The Hall input circuit is a comparator having a hysteresis of 20mV. It is recommended that the Hall input level is more than three times (60mVp-p) this hysteresis. *5. With CP = 100pF, oscillation occurs at f = 25kHz and provides the basic frequency of PWM. *6. This is the open collector output, which outputs “L” during rotation and “H” at stop. This output is left open when not used. *7. This is the open collector output, which can detect the rotation speed using the FG output according to the phase shift. This output is left open when not used. *8. This is a Hall element bias pin, that is, the constant-voltage output pin. *9. This is the minimum speed setting pin, which is pulled up with 6VREG when not used. When IC power may possibly be turned OFF first when the pin is used, be sure to insert a current limiting resistor to prevent inflow of the large current. (The same applies to the VTH pin.) *10. This pin sets the soft switching time to cut the reactive current before phase change and is connected to 6VREG when not used. *11. This pin activates the current limiter when the SENSE pin voltage is higher than the VLIM pin voltage and is connected to 6VREG when not used. *12. This is connected to GND when not used. *13. This is a pin for constant-voltage bias and should be used for application of 24V and 48V. (Refer to the sample application circuit.) Be sure to use the current limiting resistor. This is left open when not used. No.8362-7/9 LB11967V Control Timing Chart VTH voltage f=25kHz (CP=100pF) RMI voltage ON-Duty-large 4.55V CPWM ON-Duty-small 0V Rotation set to minimum speed (Stop mode) PWM control variable speed Low speed High speed Full speed 1.65V PMW-IN disconnected 12V VCC 0V FG (1) Minimum speed setting (stop) mode PWM-IN input is filtered to generate the VTH voltage. At low speed, the fan rotates with the minimum speed set with RMI pin during low speed. If the minimum speed is not set (RMI = 6VREG), the fan stops. (2) Low⇔High speed mode PWM control is made through comparison of oscillation and VTH voltages with CPWM changing between 1.6V⇔4.6V. When the VTH voltage is lower, the IC switches to drive mode. When the VTH voltage is higher, the p-channel FET is turned off and coil current is regenerated through the low-side FET. Therefore, as the VTH voltage lowers, the output ON-DUTY increases, increasing the coil current and raising the motor speed. The rotation speed is fed back by the FG output. (3) Full speed mode The full-speed mode becomes effective with the VTH voltage of 1.65V or less. (VTH must be equal to GND when the speed control is not to be made.) (4) PWM-IN input disconnection mode When the PWM-IN input pin is disconnected, VTH becomes 1.65V or les and the output enables full drive at 100%. The fan runs at full speed. (Refer to the sample application circuit.) No.8362-8/9 LB11967V 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 June, 2010. Specifications and information herein are subject t o change without notice. PS PS No.8362-9/9