LV8804V_11

Ordering number : ENA1407A Bi-CMOS LSI LV8804V Overview Feature PC and Server Fan Motor Driver The LV8804V is a motor driver for PC and server fans. • Direct PWM three-phsae sensorless motor driver Specifications Absolute Maximum Ratings at Ta = 25°C Parameter VCC maximum supply voltage VG maximum supply voltage OUT pin maximum output current SOFTST pin withstand voltage FR pin withstand voltage CTL pin withstand voltage MINSP pin withstand voltage FG output pin withstand voltage FG pin maximum output current 1/2FG output pin withstand voltage 1/2FG pin maximum output current RD output pin withstand voltage RD pin maximum output current Allowable Power dissipation 1 Allowable Power dissipation 2 Operating temperature Storage temperature Symbol VCC max VG max IOUT max VSOFTST max VFR max VCTL max VMINSP max VFG max IFG max V1/2FG max I1/2FG max VRD max IRD max Pd max1 Pd max2 Topr Tstg Independent IC Mounted on designated board * UO, VO, and WO pins Conditions Ratings 16 21 1.2 6 6 6 6 16 5 16 5 16 5 0.6 1.3 -30 to +95 -55 to +150 Unit V V A V V V V V mA V mA V mA W W °C °C * : When mounted on the designated 76.1mm × 114.3mm × 1.6mm, glass epoxy board (single-layer) Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. 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. 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 new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage condition (temperature, operation time etc.) 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. N0211 SY 20111019-S00004/31109 MS PC 20090114-S00008 No.A1407-1/10 LV8804V Allowable Operating Conditions at Ta = 25°C Parameter VCC supply voltage SOFTST input voltage range FR input voltage range CTL input voltage range MINSP input voltage range Symbol VCC VSOFTST VFR VCTL VMINSP Conditions Ratings 6 to 15 0 to VREG 0 to VREG 0 to VREG 0 to VREG Unit V V V V V Electrical Characteristics at Ta = 25°C, VCC = 12V, unless otherwise specified Ratings Parameter Circuit current 1 Charge pump block Charge pump output voltage Regulator block 5V regulator voltage Output on resistance High-side output transistor on resistance Low-side output transistor on resistance Sum of high-/low-side output transistor on resistance Startup oscillator (OSC) pin OSC pin charge current OSC pin discharge current Control voltage input (CTL) pin Motor drive on voltage input range Motor drive off voltage input range Minimum speed setting pin Minimum speed setting voltage input range Minimum speed releasing voltage input range Forward/reverse switching pin High-level input voltage range Low-level input voltage range FG, 1/2FG, and RD output pins FG output pin low-level voltage 1/2FG output pin low-level voltage RD output pin low-level voltage Current limiter circuit Limiter voltage Constraint protection circuit CT pin high-level voltage CT pin low-level voltage CT pin charge current CT pin discharge current ICT charge/discharge ratio Soft start circuit Soft start releasing voltage SOFTST pin charge current Thermal protection circuit Thermal protection circuit operating temperature * : Design target value and no measurement is made. The thermal protection circuit is incorporated to protect the IC from burnout or thermal destruction. Since it operates outside the IC's guaranteed operating range, the customer's thermal design should be performed so that the thermal protection circuit will not be activated when the fan is running under normal operating conditions. TSD Design target * 150 180 210 °C VSOFTST ISOFTST 2.5 0.6 V μA VCTH VCTL ICTC ICTD RCT 2.25 0.43 -2.9 0.23 7 2.8 0.5 -2.5 0.25 10 2.95 0.65 -2.2 0.32 13 V V μA μA VRF Limit current set to 1A when RF is 0.25Ω. 0.225 0.25 0.275 V VFG V1/2FG VRD When IO is 2mA When IO is 2mA When IO is 2mA 0.25 0.25 0.25 0.35 0.35 0.35 V V V VFRH VFRL Order of current application : UOUT→VOUT→WOUT Order of current application : UOUT→WOUT→VOUT 0 1 V 4 VREG V VMINSP1 VMINSP2 1 4 3 VREG V V VCTLON VCTLOFF 0 3.5 3 VREG V V IOSCC IOSCD -2.5 2.5 μA μA Ron (H) Ron (L) Ron (H+L) IO = 0.7A, VG = 17V IO = 0.7A, VCC = 12V IO = 0.7A, VCC = 12V, VG = 17V 0.6 0.6 1.2 1.0 1.0 2 Ω Ω Ω VVREG 4.75 5 5.25 V VVG 17 V Symbol ICC1 Conditions min typ 3 max 4 mA Unit No.A1407-2/10 LV8804V Package Dimensions unit : mm (typ) 3361 TOP VIEW 15.0 36 SIDE VIEW BOTTOM VIEW (4.0) 5.6 7.6 12 0.8 (0.7) 0.3 0.2 0.1 (1.5) 1.7 MAX SIDE VIEW 0.5 SANYO : SSOP36J(275mil) (3.5) Pin Assignment Allowable power dissipation, Pd max – W 1.5 Pd max – Ta Thermal resistance evaluation board 1.30 Thermal resistance evaluation board : 76.1 × 114.3 × 1.6mm3 glass epoxy COMIN 1 FIL 2 VREG 3 VREG 4 NC 5 NC 6 F/R 7 CTL 8 MINSP 9 36 COM 35 VCC 34 VCC 33 VCC 32 VCC 31 NC 30 UO 29 VO 28 WO 1.0 Independent IC 0.5 0.60 0.57 0.26 0 – 30 – 20 0 20 40 60 80 100 120 Ambient temperature, Ta – °C LV8804V SOFTST 10 FG 11 1/2FG 12 NC 13 RD 14 NC 15 CT 16 OSC 17 GND 18 27 RF 26 RF 25 NC 24 RF 23 SUB_GND 22 CPC 21 CP 20 VG 19 GND Top view No.A1407-3/10 LV8804V Block Diagram 1/2FG FG RD CT VG CPO CP FG VREF CTL CTL VREG MINSP CTLAMP RD CTOSC CHARGE PUMP REFOSC VREG SENSORLESS LOGIC VREG F/R OSC START OSC PRI DRIVE FIL VCC COMIN SELECTOR COM UO VO WO COM CURR LIM RF SUB_GND GND SOFTST No.A1407-4/10 LV8804V Pin Function Pin No. 36 1 Pin name COM COMIN Function Motor middle point connection. Motor position detection comparator filter pin. A capacitor must be connected between this pin and the FIL pin (pin 2). 2 FIL Motor position detection comparator filter pin. A capacitor must be connected between this pin and the COMIN pin (pin 5). Equivalent circuit VG 36 1 3 4 VREG Regulator voltage (5V) output. A capacitor must be connected between these pins and ground. 2 VCC 3 4 VREF 5, 6, 13, 15, 25, 31 7 NC No connection. These pins are not connected with the internal parts. F/R Motor rotation direction switching. A high-level input causes current to flow into the motor in the order of U, V, and W and a low-level input in the order of U, W, and V. Changing the order of current application turns the motor in the opposite direction. VREG Reverse signal 15kΩ 100kΩ Forward signal 7 Forward/reverse switching signal 8 CTL Motor control voltage input. When the control voltage is higher than 3 V (3V < CTL voltage), the motor stops. The motor speed is controlled by varying the control voltage within the range of 3V to 1V (3V > CTL voltage > 1 V). When the control voltage becomes lower that 1V (1 V > CTL voltage), the current limit set by the RF resistor is reached. VREG 9 MINSP Minimum speed setting voltage input. The minimum speed of the motor can be set by resistor-dividing the regulator voltage and feeding the resultant voltage that is within the range of 1V to 3V (1 V < MINSP < 3V). 500Ω 9 500Ω 8 10 SOFTST Soft start time setting. The motor can be started smoothly by connecting a capacitor between this pin and ground. VREG 500Ω 10 Continued on next page. No.A1407-5/10 LV8804V Continued from preceding page. Pin No. 11 12 14 Pin name FG 1/2FG RD Function FG pulse output. This pin outputs a Hall sensor system equivalent pulse signal. FG pulse output. This pin outputs 1/2 Hall sensor system equivalent pulse signal. Motor lockup detection output. Output is fixed high when motor is locked up. Equivalent circuit 11 12 14 16 CT Motor lockup detection time setting. When the motor lockup condition is detected, the protection time period before the protection circuit is activated is set by connecting a cacacitor between this pin and ground. VREG 500Ω 16 17 OSC Motor startup frequency setting. A capacitor must be connected between this pin and ground. The startup frequency is adjusted by controlling the charge/discharge current and capacitance of the capacitor. VREG 500Ω 17 500Ω 18, 19 20 GND VG GND pin. Charge pump step-up voltage output. A capacitor must be connected between this pin and the VCC pin or ground. 21 VCC VREG 22 21 CP Charge pump step-up pulse output pin. A capacitor must be connected between this pin and the CPC pin (pin 22). 20 22 CPC Charge pump step-up pin. A capacitor must be connected between this pin and the CP pin (pin 21). 23 32, 33, 34, 35 30 29 28 24, 26, 27 SUB_GND VCC GND pin. Power supply for the IC and motor. Capacitors must be connected between these pins and ground. 32 33 34 35 28 29 30 UO VO WO RF Output pins. Connect these pins to the U, V, and W of the motor coil. Output current detection pins. The drive current is detected by connecting a resistor between these pins and ground. 24 26 27 No.A1407-6/10 LV8804V LV8804V Functional Description 1 Control Characteristics IRF When RF = 0.25Ω The gradient and limit current are determined by the resistance of the RF pin. 1A Minimum speed This minimum speed is determined by the MINSP pin voltage. 0.5A VCTL 0V 1V 2V 3V 4V The current flowing to the motor and the control characteristics are determined by adjusting the resistance of the RF resistor. By connecting a resistor with a resistance of 0.25Ω between the RF pin and GND, the limit current is set at a motor current of 1A, and the control characteristics shown in the diagram above are achieved. By increasing the RF resistance, the limit current is reduced; conversely, by reducing the RF resistance, the limit current is increased. Since IO max. is 1.2A, the RF resistance must be set in such a way that the current flowing to the motor does not exceed this maximum value. By varying the CTL voltage between 1V and 3V, the current flowing to the output is limited. PWM control is exercised within the voltage range above (1V to 3V) to control the motor speed. When the CTL voltage is less than 1V, the current limiter value determined by the RF resistance is reached, and the motor speed is limited. When the CTL voltage is greater than 3V, PWM is reduced to 0%, and the motor stops. (However, the motor does not stop if the minimum speed has been set.) The minimum speed can be set by resistor-dividing the REG voltage (5V) to create a voltage of 1V to 3V, and inputting this voltage to the MINSP pin. If the minimum speed is not going to be set, the MINSP pin and CTL pin (pin 8) must be short-circuited. 2. Timing at Startup (soft start) VCC pin CTL pin Stop Full speed The gradient changes in accordance with the capacitance of the SOFTST pin. (The higher the capacitance, the steeper the gradient.) Soft start SOFTS pin Stop Full speed No.A1407-7/10 LV8804V Application Circuit Example *3 VCC VG CP UO VO WO COM CPC *11 *9 VREG MINSP FIL *13 *12 CTL FG *13 1/2FG *13 PWM FR RD RD 1/2FG FG COMIN CT SOFTST OSC *8 1000pF RF GND SUB GND *1 *1. Power supply and GND wiring The GND is connected to the control circuit power supply system. *2. Power-side power stabilization capacitor For the power-side power stabilization capacitor, use a capacitor of 10μF or more. Connect the capacitor between VCC and GND with a thick and along the shortest possible route. The VCC pins (pins 32, 33, 34, and 35) must be short-circuited on the print pattern. The GND pins (pins 18 and 19) and the SUB_GND pin (pin 23) must be short-circuited on the print pattern. LV8804V uses synchronous rectification for high efficiency drive. Synchronous rectification is effective for heat reduction and higher efficiency. However, it may increase supply voltage. If the supply voltage shall increase, make sure that it does not exceed the maximum ratings by inserting a zener diode between power supply and GND. *3. Reverse connection protection diode This diode protects reverse connection. Insert a diode between power supply and VCC pin to protect the IC from destruction due to reverse connection. Connection of this diode is not necessary required. *4. COMIN and FIL pins These pins are used to connect the filter capacitor. The LV8804 uses the back EMF signal generated when the motor is running to detect the information on the rotor position. The IC dertermines the timing at which the output block applies current to the motor based on the position information obtained here. Insert a filter capacitor with a capacitance ranging from 1,000pF to 10,000pF (reference value) between the COMIN pin and FIL pin to prevent any motor startup missoperation that is caused by noise. However, care must be taken since an excessively high capacitance will give rise to deterioration in efficiency and delays in the output power-on timing while the motor is running at high speed. Furthermore, connect the capacitor between the COMIN pin and FIL pin as close as possible in order to avoid the effects of noise from other sources. No.A1407-8/10 LV8804V *5. CT pin This pin is used to connect the lock detection capacitor. The constant-current charging and constant-current discharging circuits inporporated causes locking when the pin voltage reaches 2.5V, and releasing the lock protection when it drops to 0.5V. This pin must be connected to the GND when it is not going to be used. *6. RF pins These pins are used to set the current limit. When the pin voltage exceeds 0.25V, the current is limited, and regeneration mode is established. In the application circuit, this voltage is set in such a way that the current limit will be established at 1A. The calculation formula is given below. RF resistance = 0.25V/target current limit value All the RF pins (pins 24, 26 and 27) must be short-circuited on the print pattern. *7. SOFTST pin This pin is used to set the soft start. By connecting a capacitor between this pin and GND, the motor speed can be increased gradually. When the pin voltage exceeds 2.5V, the soft start is released, and the LV8804V is switched to normal control. If the soft start function is not going to be used, connect the pin to the VREG pin. *8. OSC pin This pin is used to connect the capacitor for setting the startup frequency. A capacitor with a capacitance ranging from about 500pF to 2,200pF (reference value) must be connected between this pin and GND. The OSC pin determines the motor startup frequency, so be sure to connect a capacitor to it. Select a capacitance value that will result in the shortest possible startup time for achieving the target speed and produce minimal variations in the startup time. If the capacitance is too high, variations in the startup time will increase; conversely, if it is too low, the motor may idle. The optimum OSC constant depends on the motor characteristics and startup current, so be sure to recheck them when the type of motor used or circuit specifications are changed. *9. MINSP pin This pin is used to input the voltage to set the minimum speed. The minimum speed can be set by resistor-dividing the VREG voltage (5V) to create a voltage of 1 to 3V, and inputting this voltage to the MINSP pin. If the minimum speed is not going to be set, the MINSP pin and CTL pin (pin 8) must be short-circuited. *10. VG, CP, and CPC pins These pins are used to connect the capacitors to generate the pre-drive voltage and stabilize the pre-drive power supply. Be sure to connect these capacitors in order to generate the drive voltage for the high-side (upper) output DMOS transistor. *11. VREG pins These are the control system power supply pin and regulator output pin, which create the power supply of the control unit. Be sure to connect a capacitor between this pin and GND in order to stabilize control system operation. Since these pins are used to supply current for control and generate the charge pump voltage, connect a capacitor with a capacitance that is higher than that of the capacitor connected to the charge pump. Both the VREG pins (pins 3 and 4) must be short-circuited on the print pattern. *12. CTL Change by the Slew Rate of 0.5V/ms or more and use the voltage of the CTL pin. The current might return to the power supply when using it below the above-mentioned Slew Rate and IC be destroyed. *13. Pin protection resistor It is recommended that resistors higher than 1kΩ are connected serially to protect pins against misconnection such as GND open and reverse connection. No.A1407-9/10 LV8804V 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. 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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 November, 2011. Specifications and information herein are subject to change without notice. PS No.A1407-10/10