Ordering number : ENA1818A LV8860V Bi-CMOS IC Fan Motor Driver http://onsemi.com Single-Phase Full-Wave Driver Overview LV8860V is a driver IC used for single-phase fan motor. High-efficiency and low-noise are realized by reducing reactive power using Silent PWM. The operating range of LV8860V is wide. LV8860V also corresponds to 24V. Therefore, it is optimal for office automation equipment and factory automation equipment. Functions • Single-phase full wave operation by Silent PWM drive. • Speed is controllable by PWM input. • Hall bias output pin. • Integrated Quick Start Circuit. • FG (rotation detection) / RD (lock detection) output pin (open drain output) • Integrated current limiter circuit (limit at IO=450mA with Rf=0.5Ω connection, limit value is determined based on Rf.) • Integrated lock protector circuit and automatic recovery circuit. • Integrated thermal shut-down (TSD) circuit. Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max 36 V OUT pin output current IOUT max 0.7 A Output withstand VOUT max 36 V RD/FG output pin withstand VRD/FG max 36 V RD/FG output maximum current IRD/FG max 10 mA RGL output maximum current IRGL max HB output maximum current IHB max PWM input pin withstand VPWM max Allowable power dissipation Pd max Operating temperature Storage temperature 5 mA 10 mA 6 V 0.8 W Topr -40 to +95 ˚C Tstg -55 to +150 ˚C * On a specified board *Specified board: 114.3mm × 76.1mm × 1.6mm fiberglass epoxy printed circuit board 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. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 May, 2013 N0211 SY 20110811-S00003/81810 SY 20100623-S00001 No.A1818-1/11 LV8860V Recommended Operating Conditions at Ta = 25°C Parameter Operating supply voltage range Symbol Conditions VCC op1 Ratings Unit Recommended supply voltage 7 to 34 V 6 to 34 V V range VCC op2 Boot guarantee supply voltage range Hall input common phase input voltage range VICM 0.3 to VRGL-2.0 SSW pin input voltage range SSW 1.0 to 3.0 V Input PWM frequency range PWMF 20 to 50 kHz Electrical Characteristics at Ta = 25°C, VCC = 24V Parameter Circuit consumption current Symbol Ratings Conditions ICC Active ICCo Stand-by min typ Unit max 2.2 3.5 mA 1.7 2.7 mA RGL pin output voltage VRGL 4.7 5.0 5.3 V RGH pin output voltage VRGH VCC-4.3 VCC-4.8 VCC-5.3 V HB pin output voltage VHB IHB=5mA 1.16 1.25 1.28 V Output ON resistance Ron IO=0.3A, upper and lower ON resistance 1.4 2.0 Ω 1.0 μA 225 250 mV V Hall input bias current IHIN Current limiter VRF 200 PWM pin input Low level VPWML 0 1.0 PWM pin input High level VPWMH 2.5 VRGL PWM input minimum pulse width TPWM RD/FG output pin Low voltage VRD/FG IRD/FG=3mA FG output leakage current IRDL/FGL VRD/FG=24V FG comparator hysteresis width ΔVHYS including offset 0.22 ±5 ±12 V μs 2 0.3 V 10 μA ±18 mV Output ON time in Lock-detection TACT 0.74 0.95 1.16 sec Output OFF time in Lock-detection TDET 7.0 9.0 11.0 sec Output ON/OFF ratio in Lock-detection TRTO 7.5 9.0 11.0 TRTO=TDET/TACT Thermal shutdown operating temperature TSD * Design guarantee 180 ˚C Thermal shutdown hysteresis width ΔTSD * Design guarantee 40 ˚C * Design guarantee: Signifies target value in design. These parameters are not tested in an independent IC. Truth table Operating state Rotation – drive mode Rotation – regeneration mode Stand-by mode Lock protector IN1 IN2 H L L H H L L H - - H L L H PWM H L L - OUT1 OUT2 FG RD H L L L L H OFF L L L L L L L OFF L L OFF OFF L OFF L L OFF L OFF OFF OFF No.A1818-2/11 LV8860V Package Dimensions unit : mm (typ) 3178B Allowable power dissipation, Pd max -- W 0.5 6.4 9 4.4 16 1 8 0.65 (0.33) Pd max - Ta 1.2 5.2 0.15 1.5max 0.22 0.8 0.6 0.35 0.4 0.2 0 -20 (1.3) Specified circuit board : 114.3 ×76.1× 1.6mm3 glass epoxy board 1.0 0 20 40 60 80 100 0.1 Ambient temperature, Ta -- C SANYO : SSOP16(225mil) Pin Assignment OUT1 OUT2 (NC) RF (NC) GND VCC LV8860V SSW RGH RGL PWM IN2 FG HB RD IN1 No.A1818-3/11 LV8860V Block Diagram OUT1 1 16 OUT2 (NC) 2 15 RF (NC) 3 14 GND 13 SSW 12 RGL 11 IN2 10 HB 9 IN1 VCC 4 RGH 5 PWM 6 Level Shift Current Limitter Duty Controller Low Side Regulator High Side Regulator OSC FG 7 Lock Detevtion HB TSD RD 8 No.A1818-4/11 LV8860V PIN function *On circuit bord, means V CC , means RGL. NO. Pin name 1 OUT1 Function 16 OUT2 2 NC 3 NC 4 VCC Power supply pin 5 RGH Regulator voltage output pin for the upper output Tr Equivalent circuit Output pin for motor driver 1 16 No connect pin No connect pin driver 5 6 PWM Input pin for PWM control * OPEN: pull up to High * When input is High → output is High When input is Low → output is Low 6 7 FG FG (rotation detection) pulse output pin 8 RD RD (lock detection) signal output pin 7 8 * During rotation → output is Low During lock → output is High 9 IN1 Hall input + pin 11 IN2 Hall input - pin 10 HB Hall bias output pin 9 11 10 Continued on next page. No.A1818-5/11 LV8860V Continued from preceding page. NO. Pin name Function 12 RGL Regulator voltage output pin for internal circuit and Equivalent circuit lower output Tr driver 12 13 SSW Voltage input pin for control between soft switches * OPEN: pin voltage is 2V * Soft switch zone is changed by connecting a 13 resistance to RGL or GND to adjust pin voltage. 14 GND 15 RF Ground pin Resistive connection pin for current limiter 15 Sample Application Circuit 1 OUT1 2 (NC) 3 (NC) 4 VCC OUT2 16 RF GND *6 15 Rf 14 *4 *1 *2 *3 5 RGH SSW 13 RGL 12 6 PWM IN2 11 *5 7 FG HB 10 *5 8 RD IN1 9 ( PWM ) ( *7 ) RHB H *1 When diode Di is used to prevent destruction of IC from reverse connection, make sure to implement capacitor Cr to secure *2 If kickback at a phase change is greater, insert zener diode between GND and VCC or implement the larger capacitor between *3 GND and VCC mentioned in *1 Make sure to implement enough capacitance 0.1μF or greater between RGH pin and VCC pin for stable performance. regenerative current route. *4 Make sure to implement enough capacitance 0.1μF or greater between RGL pin and GND pin for stable performance. *5 FG pin and RD pin are open drain output. Keep the pins open when unused. *6 The current limiter is activated when the current detection resistor voltage exceeds 225mV between RF and GND. *7 Where Rf=0.5Ω, current limiter is activated at IO=450mA. Setting is made using Rf resistance. Hall element outputs stable hall signal with good temperature characteristic when it is biased with constant voltage from HB pin. If you wish to alleviate heating of IC, do not use HB pin. When you do not use this Pin (Pin HB), pull down with resistor of around 10kΩ (recommended). No.A1818-6/11 LV8860V Adjustment of a direction between soft switches 12PIN RGL OUT1 Rw Wide 13PIN SSW OUT2 14PIN GND 12PIN RGL OUT1 Medium 13PIN SSW OUT2 14PIN GND 12PIN RGL OUT1 Narrow 13PIN SSW Rn OUT2 14PIN GND (phase switch) LV8860V realizes high efficiency and low noise by controlling reactive power using soft switch before and after phase switch by variable PWM-duty. The width of soft switch before and after switching is controlled by SSW pin voltage. Therefore, it is adjustable by connecting an external resistance to SSW. Adjustment voltage range is between 1V and 3V. * Without adjustment (SSW is open * this is a reference width of soft switch) … with IC’s internal resistance: VSSW = 5 × 60k / (90k + 60k) = 2V * To widen width of soft switch (connect Rw (resistance) between RGL and SSW.) … VSSW = 5 × 60k / (60k + 1 / (1/Rw + 1/90k)) ex.) Connect Rw = 75kΩ VSSW = 5 × 60k / (60k + 1 / (1/75k + 1/90k)) = 2.97V * To narrow soft switch width (connect Rn (resistance) between SSW and GND.) … VSSW = 5 × ((1 / (1/Rn + 1/60k)) / (90k + 1 / (1/Rn + 1/60k))) ex.) Connect Rn = 39kΩ VSSW = 5 × ((1/(1/39k + 1/60k)) / (90k + 1 / (1/39k + 1/60k))) = 1.04V No.A1818-7/11 LV8860V Setting value of input signal amplitude The width of soft switch in LV8860V is controlled by input signal, IN1/IN2. The difference of input voltage ( VINp-p ) that creates width of soft switch is adjustable by SSW voltage (VSSW) of an external pin. The range of SSW input voltage is between 1V and 3V. Difference of input signal amplitude in VSSW range: • When VSSW = 1V (min), VINp-p = 30mV → make sure to input Hall signal with amplitude difference greater than 30mV. • When VSSW = 2V (open), VINp-p = 90mV → make sure to input Hall signal with amplitude difference greater than 90mV. • When VSSW = 3V (max), VINp-p = 150mV → make sure to input Hall signal with amplitude difference greater than 150mV. * When input signal amplitude is greater than VINp-p (as shown in Fig. A below). Width of soft switch is defined as shown in Fig. A * When input signal amplitude is less than VINp-p (as shown in Fig. B below). Since input signal is within the range of VINp-p in all rotations, the entire zone is the soft switch zone. Consequently, IC does not operate properly. For such reason, make sure to input Hall signal with enough amplitude difference to SSW setting value so that IC operates properly. IN1 IN2 VINp-p =( VIN1 - VIN2 ) Input Signal Between Soft Switches Fig.A IN1 IN2 VINp-p =( VIN1 - VIN2 ) Input Signal Between Soft Switches Fig.B No.A1818-8/11 LV8860V Description of operation • PWM speed control waveform PWM 100% ONDUTY 0% Low Speed Stop High Speed PWM Control Variable Speed Full Speed FG VCC PWM IN1-IN2 OUT1 OUT2 Startup Support (Duty = 50%) Full Speed PWM Control Variable Speed No.A1818-9/11 LV8860V • Lock protection operation waveform Motor Re-rotation Motor Lock IN1 - IN2 OUT1 OUT2 RD FG TDET (Motor Lock Protection) TACT (Stand-by for FG-pulse) Startup Support • Stand-by mode operation waveform Input PWM duty = x% Input PWM duty = 0% PWM IN1 - IN2 OUT1 OUT2 FG Ditecting time for Stand-by mode Stand-by mode Startup Support No.A1818-10/11 LV8860V ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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