www.fairchildsemi.com FAN8486D (KA3086D) 2-Phase BLDC Motor Driver Features Descripiton • • • • • • The FAN8486D is a monolithic integrated circuit, and it is suitable for drum motor driver of VCR system. Drives the BLDC motor using 2 hall sensors. 2-phase, full-wave drive method Built-in thermal shutdown (TSD) circuit Controls the motor speed through voltage Built-in bandgap circuit Built-in frequency Generator (FG) & Phase Generator (PG) amplifier & comparator. Typical Applications • Video cassette recorder (VCR) cylinder (drum) motor • Other 2-phase BLDC motor 28-SSOP-300SG Ordering Information Device Package Operating Temp. FAN8486D 28-SSOP-300SG −25°C ~ +75°C FAN8486DTF 28-SSOP-300SG −25°C ~ +75°C Rev. 1.0.1 February. 2000. ©2000 Fairchild Semiconductor International 2 OUT2N 8 9 10 11 12 13 14 H1P 7 SVCC 6 PGND2 PG(V25) 23 22 21 PGOUT H2N H2P H1N 20 PGAMPOUT PGIN VREG FGIN FG(V25) 24 PVCC1 54 OUT2P FGAMPOUT 25 NC 4 NC FGOUT 26 OUT1N 3 NC VCTL 27 PGND1 2 NC SGND 28 OUT1P 1 PVCC2 FAN8486D (KA3086D) Pin Assignments 19 18 14 17 16 15 FAN8486D Rev. 1.0.1 February. 2000. FAN8486D (KA3086D) Pin Definitions Pine Number Pin Name I/O Pin Function Description 1 PVCC2 - Power supply voltage2 2 NC - - 3 NC - - 4 NC - - 5 OUT2P O Output drive 2(P) 6 PGND2 O Power ground 2 7 OUT2N O Output drive 2(N) 8 OUT1P O Output drive 1(P) 9 PGND1 O Power ground 1 10 OUT1N - Output drive 1(N) 11 NC - - 12 PVCC1 - Power supply voltage1 13 SVCC - Signal supply voltage 14 H1P I Hall signal input 1P 15 H1N I Hall signal input 1N 16 H2P I Hall signal input 2P 17 H2N I Hall signal input 2N 18 PGOUT O Phase generate output 19 PGAMPOUT O Phase generate amp. output 20 PGIN I Phase generate input 21 PG(V25) - Reference voltage for PG 22 VREG - Regulated voltage 23 FG(V25) - Reference voltage for FG 24 FGIN I Frequency generate input 25 FGAMPOUT O Frequency generate amp. output 26 FGOUT O Frequency generate output 27 VCTL I Voltage control(motor speed control) 28 SGND - Signal ground Rev. 1.0.1 February. 2000. 3 8 9 10 11 12 13 14 SVCC H1P 7 OUT2N DRIVER DRIVER GM GM PGAMPOUT PGOUT H2N H2P H1N 20 + AMP HYS. COM PG(V25) 21 PGIN VREG 22 Rev. 1.0.1 February. 2000. AMP ± VREF VREG (5.0V) FG(V25) 23 AMP ± TSD Supply each block VREF − + AMP PVCC1 6 PGND2 FGIN FGAMPOUT 24 NC 54 OUT2P FGOUT 25 OUT1N 4 NC HYS. COM VCTL 26 PGND1 3 NC Current/Voltage VCTL Control SGND 27 OUT1P 2 NC ICTL 28 + - 4 1 PVCC2 FAN8486D (KA3086D) Internal Block Diagram 19 18 14 17 16 15 + - FAN8486D (KA3086D) Equivalent Circuits Description Pin No. VCTL 27 Internal circuit VREG ICTL 50 1k 27 Motor output 5,7,8,10 VCC Hall input 5 7 8 10 14,15,16,17 VREG Vcc 50 500 500 14 50 15 16 ICTL Rev. 1.0.1 February. 2000. 17 5 FAN8486D (KA3086D) Equivalent Circuits (Continued) Description Pin No. PG, FG amplifier 19,20 24,25 Internal circuit VREG VCC VCC 50 50 1k 19 V25 20 25 24 PG, FG hysteresis amplifier 18,19,25,26 VCC VREG VREG VCC 50 18 26 50 19 V25 25 6 Rev. 1.0.1 February. 2000. FAN8486D (KA3086D) Absolute Maximum Ratings (Ta=25°°C) Parameter Symbol Value Unit Remark Supply voltage VCCmax 18 V - A - IREGmax 30 mA - Pd 1 note2 W No heat sink Operating temperature TOPR −25 ~ +75 °C - Storage temperature TSTG −45 ~ +125 °C - Maxium output current 1.0 note1 IOmax VREG output current Power dissipation Notes: 1. Duty 1 / 100, pulse width 500µs 2. 1) When mounted on glass epoxy PCB (76.2 × 114 × 1.57mm) 2) Power dissipation reduces 8.0mW / °C for using above Ta=25°C. (Without heat-sink) 3) Do not exceed Pd and SOA(Safe Operating Area). Power Dissipation Curve Pd (mW) 2, 000 SOA 0 0 25 50 75 100 125 150 175 Ambient temperature, Ta [°C] Recommened Operating Conditions (Ta=25°°C) Parameter Operating supply voltage Symbol Min. Typ. Max Unit VCC 8 12 16 V Rev. 1.0.1 February. 2000. 7 FAN8486D (KA3086D) Electrical Characteristics (Ta=25°C, VCC=12V, unless otherwise specified) Parameter Symbol Condition Min. Typ. Max. Unit FULL CIRCUIT Quiescent current IQ VCC=12V - 8.5 13 mA Regulated voltage VREG VCC=12V 4.6 5.0 5.4 V Regulated voltage VREG VCC=12V, IREG=−20mA 4.6 5.0 5.4 V 50 - - mVp-p VOLTAGE REGULATOR HALL INPUT Hall minimum input level note VINH - IBH VCTL=2.0V, Hall=2.5V - 0.25 2.0 µA Output saturation voltage (Upper) VSU VCTL=4.5V - 1.3 2.0 V Output saturation voltage (Lower) VSL VCTL=4.5V - 2.0 2.0 V Hall bias current OUTPUT DIRVE Output current A IOUTA VH1P=2.6V VHALL_1N=2.4V, VCTL=3.5V 500 700 900 mA Output current B IOUTB VH2P=2.6V VH2N=2.4V, VCTL=2.5V 500 700 900 mA 0.48 × VREG 2.0 2.3 2.5 V VOLTAGE CONTROL VCTL reference voltage note VCTL injput range note V25 VCTL - VCTL offset range VOFF VCTL=0 ~ VCTL VCTL input bias current IVCTL VCTL=2.5V 0 - VREG V −150 0 +150 mV - 1.0 6.0 µA 0.38 0.55 0.64 A/V VCTL=2.8V, 3.3V ∆IO / ∆VCTL VH1P=2.6V, VH1N=2.4V Voltage control gain GM IO 0.55A/V(TYP) 0.48 × VREG (TYP) VCTL NOTE: The note in the chart means items calculated and approved in design not the items proven by actual test result. 8 Rev. 1.0.1 February. 2000. FAN8486D (KA3086D) Electrical Characteristics (Continued) (Ta=25°C, VCC=12V, unless otherwise specified) Parameter Symbol Condition Min. Typ. Max. Unit TSD - 130 160 - °C THYS - - 30 - °C VOFS - - 0 ±8 mV - 0.2 2.0 µA 65 70 - dB VREG −1.48 VREG −0.74 - V - 0.85 1.45 V - ±130 ±165 ±200 mV - 0.12 0.32 V - 7.0 10 13 kΩ FULL CIRCUIT Shutdown temperature note Temperature hysteresis note FG / PG AMP Input offset voltage Input current Open loop gain IAMP_IN note GA VIN=2.5V VCC=12V, Signal=500Hz Output high voltage VOHA VIN=2.0V Output low voltage VOLA VIN=2.7 COMPARATOR (HYSTERESIS) Hysteresis level VHYS Output low voltage VOLHYS Output pull-up resistance VBHYS VIN=2.0V NOTE: The note in the chart means items calculated and approved in design not the items proven by actual test result. Rev. 1.0.1 February. 2000. 9 FAN8486D (KA3086D) Application Informations 1. A Diagram Summarizing The Entire System IO IC HALL+ Hall_IN 4IC 2IC AMP. DRIVER HALL− If IC 4IC GM VCTL V/I Converter VREG TSD R2 R1 FG_IN AMP & COMP FG_OUT PG_IN AMP & COMP PG_OUT Figure 1. Figure 1 is a conceptual diagram of the FAN8486D. It turns on or off depending on the signal of the hall sensor used for sensing the rotor position of motor. The AMP, GM (Feedback) and output blocks are circuits used to determine current gain of FAN8486D. Furthermore, HallIN represents the hall signal switch. It supplies stable bias to each VREG block. The TSD block is a thermal shutdown circuit that protects the IC during an high temperature inside the IC. Moreover, FG. and PG. blocks output individual signals generated in the motor using the amplifier and comparator. These signals transmit motor speed and position data to controller of external servo etc. for their control. 2. Current Control Figure 2 simplifies figure 1. The supplied IO current drives the motor and the Ic current controls the motor speed. Figure 3 is a graph of ICTL vs. IO. 10 Rev. 1.0.1 February. 2000. FAN8486D (KA3086D) ICTL IO AT Figure 2. IO IOmax AT ICOmax ICTL Figure 3. 3. Voltage Control Even though FAN8486D command uses Ic to control the magnitude of IO, it can also use voltage. FAN8486D mainly uses voltage control and has option to use current control. VCTL ICTL IO V/I Converter AT Figure 4. Figure 4 shows the principle of the voltage control. The VCTL is the motor speed control voltage, and the ICTL is converted to current through the V / I converter. Figure 5 shows the graph of VCTL vs. IO. IO IOmax AT GM 0.48 × VREG (TYP) VCTL Figure 5. Rev. 1.0.1 February. 2000. 11 FAN8486D (KA3086D) Typical Performance Characteristics 5 4.0 4 VREG (V) VREG (V) 5.0 3 3.0 2 2.0 1.0 0 -30-20-10 0 0.0 0 2 4 6 8 10 12 V CC(V) 14 16 18 VCTL = 0V VCC = 12V 1 VCTL = 0V 20 1.VCC vs VREG 2.Temp. vs VREG 0.63 10 0.58 8 GM1(A/V) ICC(mA) 12 6 4 VCTL = 3.5V VCTL = 3.5V 10 KΩ RLRL = =10KΩ 2 10 20 30 40 50 60 70 80 90 Temperature(℃) Temperature(°C) 0.53 0.48 0.43 0 V CTL = 3.5V 0.38 8 10 12 14 VCC(V) 16 18 8 10 900 850 850 800 800 750 750 IO (mA) IO (mA) 900 700 650 18 650 VV 3.5V 3.5V CTL= = CTL RL== 10KΩ 10KΩ RL 550 500 500 8 10 12 V CC (V) 14 16 18 8 10 12 V CC (V) 14 6.VCC vs IOB 5.VCC vs IOA 12 16 700 600 VCTL 3.5V V CTL= = 3.5V RLRL== 10KΩ 10KΩ 550 14 4.VCC vs GM1 3.VCC vs ICC 600 12 V CC (V) Rev. 1.0.1 February. 2000. 16 18 FAN8486D (KA3086D) Test Circuits VCC ICC 1 SGND PVCC2 28 1 SW24 2 A 2 3 NC VCTL FGOUT 27 VCTL 3 FGOUT NC 2mA 26 500µA 2 SW22 2 4 1 NC SW1 5 2 OUT2P 10Ω(20W) 1 6 PGND2 7 OUT2N FGAMPOUT F A N 8 4 8 6 D SW23 −500µA 1 25 1 FGAMPOUT 3 FGIN SW19 24 2 2 1 2 23 VREG 22 FGIN FG(V25) SW21 FG(V25) SW20 1 1 ~ 2 SW2 VREG SW18 1 2 IREG=−20µA 1 SW3 8 OUT1P PG(V25) 2 SW25 21 2 10Ω(20W) 9 1 SW4 10 PGND1 OUT1N PGIN PGAMPOUT PG(V25) 1 ~ SW13 3 PGAMPOUT SW16 1 2 SW17 PGOUT −500µA 2 1 NC 2 1 SW15 19 2 11 PGIN 1 SW14 1 2 20 −500µA A 2 18 3 PGOUT 1 2mA SW10 12 PVCC1 H2N 17 13 SVCC H2P 16 2 H2N 1 H1P H2P SW9 SW7 2 SW12 + − SW8 1 SW5 14 H1P H1N 15 2 ~ − + ~ SW11 2 SW6 H1N 1 Rev. 1.0.1 February. 2000. 13 FAN8486D (KA3086D) Typical Application Circuits 1 PVCC2 2 SGND 28 NC VCTL 27 3 NC FGOUT 26 4 NC FGAMPOUT 25 5 OUT2P FGIN 24 6 PGND2 FG(V25) 23 7 OUT2N VREG 22 8 OUT1P PG(V25) 21 F A N 8 4 8 6 D M PG 9 PGND1 PGIN 20 10 OUT1N PGAMPOUT 19 VREG 14 PGOUT 18 PVCC1 H2N 17 13 SVCC H2P 16 14 H1P H1N 15 11 NC 12 Rev. 1.0.1 February. 2000. HALL HALL FAN8486D (KA3086D) Rev. 1.0.1 February. 2000. 15 FAN8486D (KA3086D) DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 12/1/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International