LV8805V

Ordering number : ENA1747A LV8805V Overview Feature Bi-CMOS LSI PC and Server Fan Motor Driver The LV8805V 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 withstand voltage OUT pin maximum output current SOFTST pin withstand voltage FR pin withstand voltage PWMIN pin withstand voltage FG output pin withstand voltage FG pin output current 1/2FG output pin withstand voltage 1/2FG pin output current RD output pin withstand voltage RD pin output current Allowable Power dissipation 1 Allowable Power dissipation 2 Operating temperature Storage temperature Symbol VCC max VG max VOUT max IOUT max VSOFTST max VFR max VPWMIN max VFG max IFG max V1/2FG max I1/2FG max VRD max IRD max Pd max1 Pd max2 Topr Tstg *2 Independent IC Mounted on designated board *1 Conditions Ratings 16 21 16 1.2 6 6 6 16 5 16 5 16 5 0.6 1.3 -40 to +95 -55 to +150 Unit V V V A V V V V mA V mA V mA W W °C °C *1: When mounted on the designated 76.1mm × 114.3mm × 1.6mm, glass epoxy board (single-layer) 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. 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-S00002/60910 SY 20090916-S00005 No.A1747-1/9 LV8805V Continued from preceding page. *2: Do not exceed Tjmax=150°C. 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. Allowable Operating Conditions at Ta = 25°C Parameter VCC supply voltage SOFTST input voltage range FR input voltage range MINSP input voltage range Symbol VCC VSOFTST VFR VMINSP Conditions Ratings 6 to 15 0 to VREG 0 to VREG 0 to VREG Unit 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 Sum of high-/low-side output transistor on resistance Startup oscillator (OSC) pin OSC pin charge current OSC pin discharge current PWM input (PWMIN) pin High-level input voltage range Low-level input voltage range Range of PWM input frequency 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 FG output pin leak voltage 1/2FG output pin low-level voltage 1/2FG output pin leak voltage RD output pin low-level voltage RD output pin leak 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 TSD Design target * 150 180 210 °C 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. VSOFTST ISOFTST 2.5 0.6 V μA VCTH VCTL ICTC ICTD RCT 2.25 0.43 -2.9 0.21 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 ILFG V1/2FG IL1/2FG VRD ILRD When IO is 2mA When VFG is 16V When IO is 2mA When V1/2FG is 16V When IO is 2mA When VRD is 16V 0.25 0.25 0.25 0.35 1 0.35 1 0.35 1 V μA V μA V μA VFRH VFRL Order of current application : UOUT→VOUT→WOUT Order of current application : UOUT→WOUT→VOUT 2.5 0 VREG 1 V V VPWMINH VPWMINL fPWMIN 2.5 0 15 VREG 1 60 V V kHz IOSCC IOSCD -2.5 2.5 μA μA Ron (H+L) IO = 0.7A, VCC = 12V, VG = 17V 1.2 2 Ω VVREG 4.75 5 5.25 V VVG 17 V Symbol ICC1 Conditions min typ 2.6 max 3.6 mA Unit No.A1747-2/9 LV8805V 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 PWMIN 8 NC 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 LV8805V 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.A1747-3/9 LV8805V Block Diagram 1/2FG FG RD CT VG CPC CP FG RD CTOSC CHARGE PUMP REFOSC VREG PWMIN SENSORLESS LOGIC OSC START OSC PRI DRIVE VREG F/R FIL VCC COMIN SELECTOR COM UO VO WO COM CURR LIM RF SUB_GND GND SOFTST No.A1747-4/9 LV8805V 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, 9 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 PWMIN PWM signal input pin. "H" The output transistor is turned on by the level voltage input. "L" The output transistor is turned off by the level voltage input, and the motor stops. The speed of the motor is controlled by controlling Duty of the input signal. When the pin opens, the motor becomes all velocities. VREG 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.A1747-5/9 LV8805V 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.A1747-6/9 LV8805V Application Circuit Example *3 VCC VG CP UO VO WO COM CPC *10 VREG F/R FIL *11 PWMIN PWMIN PWM Control Signal F=20kHz to 50kHz COMIN RFG, R1/2FG, RRD =10k to 100k FG *11 *11 1/2FG *11 RD FG 1/2FG RD 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. LV8805V 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.A1747-7/9 LV8805V *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. 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. *10. 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. *11. 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.A1747-8/9 LV8805V 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. 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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.A1747-9/9