AT5801 Preliminary 4-Channel driver + Power Controller Pin Assignments 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 3 Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller Absolute maximum ratings (Ta = 25oC) Parameter Supply voltage Driver output current Power dissipation Operating temperature range Storage temperature range ﹡Derating is done 5mW/ Symbol VCC Io Pd Topr Tstg Limits 13.5 500 625* 0~+80 -55~+150 unit V mA mW o C o C o C for operation above Ta=25oC. Recommended operating conditions (Ta = 25oC) Parameter Control circuit power supply voltage Pre-driver power supply voltage H-bridge power supply voltage Power unit power supply voltage Charging circuit power supply voltage Ambient temperature Symbol VSYS1 VSYS2 HVCC BATT CHGVCC Ta Min. 2.7 2.7 1.5 3.0 0 Typ. 3.2 3.2 PWM 2.4 4.5 25 Max. 5.5 5.5 BATT 8.0 8.0 70 unit V V V V V o C Electrical characteristics (Unless specified particular, Ta = 25oC, BATT=2.4V, VSYS1= VSYS2=3.2V, VREF=1.6V, CHGVCC=0V, CLK=88.2KHz ) Parameter Symbol Min. Typ. Max. Unit Conditions － 0 3 μA BATT=9V VSYS1=VSYS2=Vref=0V － 2.5 4.0 mA HVcc=0.45V, MUTE34=3.2V － 4.7 6.4 mA HVcc=0.45 MUTE34=3.2V, EI=0V － 4.1 5.5 mA HVcc=0.45V, MUTE34=3.2V － 0.65 2.0 mA CHGVcc=4.5V, ROUT=OPEN Total circuit BATT stand-by current IST BATT supply current IBAT at no-load VSYS1 supply current ISYS1 at no-load VSYS2 supply current ISYS2 at no-load CHGVCC supply current I at no-load CGVCC H-bridge driver section Voltage gain (CH1、3、4) (CH2) Gain error by polarity IN pin (CH1、3、4) Input resistance (CH2) GVC134 GVC2 ΔGvc RIN134 RIN2 12 21.5 －2 9 6 14 23.5 0 11 7.5 16 24.5 2 13 9 dB dB dB kΩ kΩ Maximum output voltage VOUT 1.9 2.1 － V VSATL － 240 400 mV IO=－300mA、IN=0 and 3.2V VSATU － 240 400 mV IO=300mA、IN=0 and 3.2V Lower transistor saturated voltage Upper transistor saturated voltage 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 4 IN=1.7 and 1.8V RL=8Ω、HVCC=BATT=4V、 IN=0－3.2V Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller 0 0 0 0 8 50 130 10 mV mV mV mV － － V IN1=1.8V － 0.8 V IN1=1.8V － － V IN2=1.8V － 0.8 V IN2=1.8V － 0.8 V IN3= IN4=1.8V － － V IN3= IN4=1.8V － － V IN1=IN2=IN3=IN4=1.8V － 0.8 V IN1= IN2=IN3=IN4=1.8V 7 10 mA 13 0.45 17 0.55 mA V － 0 5 1/60 1/50 1/40 3.05 3.20 3.35 V 1.4 － 1.6 － － 0.3 V V － 6 12 0 10 20 0.1 16 32 V EI=1.3V μA EI=0.7V μA EI=1.3V, OFF=0V 12 20 32 μA EI=1.3V, BATT=9.5V 175 220 265 kΩ 1.10 1.20 1.30 V EI=0.7V, CT=0V 8.0 8.4 9.0 V BSEN pin voltage 0.78 0.98 1.13 V BATT=CT=1.5V, IO=－2mA, VSYS1= VSYS2=0V, at start －8 Input offset voltage VOI Output (CH1、3、4) VOO134 －50 offset voltage (CH2) VOO2 －130 －10 Dead zone VDB BRAKE1 ON VBRON 2.0 threshold voltage BRAKE1 OFF － VBROFF threshold voltage MUTE2 ON VM2ON 2.0 threshold voltage MUTE2 OFF － VM2OFF threshold voltage MUTE34 ON － VM34ON threshold voltage MUTE2 OFF VM34OFF 2.0 threshold voltage VREF ON VrefON 1.2 threshold voltage VREF OFF VrefOFF － threshold voltage BRAKE1 IBRAKE1 4 brake current PWM power supply driving section PSW sink current IPSW 10 HVCC level shift voltage VSHIF 0.35 HVCC leak current IHLK PWM amplifier GPWM transfer gain DC/DC converter section (Error amplifier section) VSYS1 pin VSITH threshold voltage EO pin output voltage H VEOH EO pin output voltage L VEOL (Short-circuit protection) SPRT pin voltage(normal) VSPR SPRT pin current 1 EO=H ISPR1 SPRT pin current 2 EO=L ISPR2 SPRT pin current 3 ISPR3 (over-voltage) SPRT pin impedance RSPR SPRT pin VSPTH threshold voltage Over-voltage VHVPR protection detect (Transistor driving section) SW pin VSW1H output voltage 1H Vref=IN=1.6V BRAKE1 pin The current Difference between “H” and “L” IN1=2.1V IN1=1.8V,HVCC－OUT1F HVCC=9V μA VSYS1= VSYS2=BATT=0V 1/kΩ IN1=1.8V, HVCC=1.2~1.4V 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 5 EI=0.7V, IO=－100μA EI=1.3V, IO=100μA Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller SW pin output voltage 2H SW pin output voltage 2L SW pin oscillating frequency 1 SW pin oscillating frequency 2 SW pin oscillating frequency 3 SW pin minimum pulse width Pulse duty at start Max. pulse duty at self-running Max. pulse duty at CLK synchronization (Dead time section) DEAD pin impedance DEAD pin output voltage (Interface section) OFF pin threshold voltage OFF pin bias current START pin ON threshold voltage START pin OFF threshold voltage START pin bias current CLK pin threshold voltage H CLK pin threshold voltage L CLK pin bias current CT=0V, IO=－10mA, EI=0.7V, SPRT=0V CT=2V, IO=10mA, VSW2H 1.0 1.50 － V VSW2L － 0.3 0.45 V fSW1 80 100 150 KHz fSW2 60 70 82 KHz CT=470pF, CLK=0V fSW3 － 88.2 － KHz CT=470pF TSWMIN 0.01 － 0.6 μsec CT=470pF, EO=0.5~0.7V sweep DSW1 40 50 60 ﹪ CT=470pF, VSYS1= VSYS2=0V DSW2 70 80 90 ﹪ EI=0.7V, CT=470pF, CLK=0V DSW3 65 75 85 ﹪ EI=0.7V, CT=470pF RDEAD VDEAD 52 0.78 65 0.88 78 0.98 kΩ V VOFTH － － IOFF 75 95 VSTATH1 － － VSYS1 －2.0 115 BATT －1.0 V CT=470pF, VSYS1= VSYS2=0V, at start EI=1.3V ΜA OFF=0V V VSYS1= VSYS2=0V, CT=2V V VSYS1= VSYS2=0V, CT=2V － － ISTART BATT －0.3 13 16 19 VCLKTHH 2.0 － － V VCLKTHL － － 0.8 V ICLK － － 10 VSTMM 2.3 2.5 2.7 V 130 200 300 mV 1.63 1.83 2.03 V 2.1 1.7 2.2 1.8 2.3 1.9 V V 25 50 100 mV VSEL=0V 25 50 100 mV ISEL=－2μA － － 0.5 V － － 1.0 VSTATH2 μA START=0V μA CLK=3.2V (Starter circuit section) Starter switching voltage Starter switching VSNHS hysteresis width Discharge release voltage VDIS (Empty detection section) Empty detection voltage 1 VEMPT1 Empty detection voltage 2 VEMPT2 Empty detection VEMHS1 hysteresis width 1 Empty detection VEMHS2 hysteresis width 2 EMP pin output voltage VEMP EMP pin IEMPL output leak current VSYS1= VSYS2=0V~3.2V, START=0V START=0V VSEL=0V ISEL=－2μA IO=1mA, BSEN=1V μA BSEN=2.4V 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 6 Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller kΩ BSEN pin input resistance RBSEN 17 23 27 BSEN pin leak current － － 1.0 1.5 －2 － － － － 85 90 95 ﹪ 25 50 100 mV － － 0.5 V 72 90 108 kΩ － BATT V － BATT V 77 95 113 kΩ － －5.5 2.8 － － 0 － － 300 5.5 － 0.2 nA mV V V OP+=1.6V － －6.5 －3.0 mA Output short to GND by 50Ω 0.4 0.7 － mA Output short to VSYS by 50Ω － － 70 0.5 － － 0.71 0.81 0.91 0.75 0.95 1.20 － － － － 1.0 1.0 － 0.45 1.0 IBSNL SEL pin detection voltage VSELTH SEL pin detection current ISELT (Reset circuit) VSYS1 reset HSRT threshold voltage ratio Reset detection VRSTHS hysteresis width RESET pin output voltage VRST RESET pin pull up RRST resistance AMUTE pin output VAMT1 voltage 1 AMUTE pin output VAMT2 voltage 2 AMUTE pin pull down RAMT resistance (Operational amplifier section) Input bias current IBIAS Input offset voltage VOIOP High level output voltage VOHOP Low level output voltage VOLOP Output drive current ISOU (source) Output drive current ISIN (sink) Open loop voltage gain GVO Slew rate SR (Charging circuit section) RCHG pin bias voltage VRCHG RCHG pin output RRCHG resistance SEL pin leak current 1 ISELLK SEL pin leak current 2 ISELLK SEL saturation voltage VSELCG BATT －0.4 BATT －0.4 VSEL=0V VSYS1=VSYS2=0V, μA BSEN=4.5V V VSELTH=BATT-SEL, BSEN=2V μA Ratio of VSYS1 voltage and error-amp threshold voltage IO=1mA, VSYS1=VSYS2=2.8V IO=－1mA, VSYS1=VSYS2=2.8V IO=－1mA, START=0V VSYS1=VSYS2=2.8V RL=OPEN RL=OPEN dB VIN=－75dBV,f=1kHz V/μs CHGVcc=4.5V, RCHG=1.8kΩ CHGVcc=4.5V, kΩ RCHG=0.5 and 0.6V μA CHGVcc=4.5V,RCHG=OPEN μA CHGVcc=0.6V,RCHG=1.8kΩ CHGVcc=4.5V, IO=200mA, V RCHG=0Ω V *This product is not designed for protection against radioactive rays. 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 7 Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller Application 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 8 Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller Application explanation 〈H-bridge driver〉 1.Mute function Brake function and mute function are assigned to CH1 and other channels of the four channels respectively. • When the BRAKE pin is low is normal operation (high is CH1 mute on),and enters a brake mode. • When the MUTE2 pin is low is normal operation (high is CH2 mute on). • When the MUTE34 pin is high is normal operation (low is CH3,4 mute on). • 2.VREF drop mute When the voltage impressed to VREF terminal is 1.0V (typ.) or less, impedance of driver output becomes “high”. 3.Thermal shutdown If the chip temperature rises above 150 The power supply of drive output stage is HVcc terminal and that of pre-drive circuit is VSYS2 terminal. Attach by-pass capacitor (approximately 0.1μF) to the leg of this IC between the power supplies. 〈DC/DC converter control circuit〉 1.Output voltage Booster circuit of voltage (VSYS1) can be configured with external component. The voltage is defined as follows. ℃,then the thermal shutdown (TSD) circuit is activated and the output current is cut. When the chip temperature has dropped to 120 ℃,then output current begins to flow. 4.Driver gain Driver input resistance is 10k Ω of CH1, CH3,CH4 and input resistance of CH2 is 7.5k Ω.Driver gain can obtain under-mentioned expression and set it. 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 9 Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller has been 8.4V(typ.), SPRT terminal is charged. 2.Short-circuit protection function When the output of error amplifier is “H”, if Then, switching of SW terminal is terminated the voltage of SPRT terminal has reached when the voltage of the SPRT terminal has 1.2V(typ.) terminal, reached 1.2V(typ.). Time to disable switching switching of SW terminal is disabled. Time to depends on a capacitor of the SPRT terminal disable switching depends on a capacitor of and it can be calculated by the under- the SPRT terminal and it can be calculated by mentioned expression: upon charging the the under-mentioned expression: VTH (sec) ISPRT (VTH = 1 .20V , ISPRT = 10 µ A) t = CSPRT × VTH (sec) IHV (VTH = 1 .20V , IHV = 20 µ A) t = CSPRT × 〈PWM power supply drive circuit〉 3.Soft-start function This circuit detects a maximum output level of The soft-start is functioned by putting a drivers of four channels and performs the capacitor between DEAD terminal and GND. PWM supply of load drive power supply. This Max duty can be changed by attaching circuit uses PNP transistor, Schottky Diode resistance to 4-pin. and Capacitor as external component. t = CDEAD × R(sec) ( R = 65KΩ) 4.Power-off operation SPRT terminal is charged by setting OFF terminal to “L”. Then, switching of SW terminal is terminated when the voltage of the SPRT terminal has reached 1.2V(typ.). Time to disable switching depends on a capacitor of the SPRT terminal and it can be calculated by the under-mentioned expression: VTH (sec) IOFF (VTH = 1 .20V , IOFF = 20 µ A) t = CSPRT × 〈“Empty” detector unit〉 When the voltage impressed to BSEN terminal has been the detecting voltage or less, EMP terminal varies from “H” to “L”(open collector output). Hysteresis of 50mV(typ.) set to the detecting voltage to prevent the output chattering. 5.Over-voltage protection operation When the voltage impressed to BSEN terminal The detecting voltage varies depending on SEL terminal as follows: 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 10 Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller 〈Charging circuit〉 The power supply of the charging unit is CHGVCC terminal and it is independent of any other circuits. Charging current is set by the resistance between RCHG terminal and GND. The charging current takes constant current through SEL terminal. This circuit has a private thermal shutdown 〈Reset circuit〉 circuit. When the chip temperature has been Upon 90﹪of DC/DC converter output voltage, 150℃, the charging current is cut. When the RESET terminal varies from “L” to “H” and chip temperature has dropped to 120℃, the AMUTE terminal changes from “H” to “L”. charging current begins to flow. Hysteresis of 50mV(typ.) set to the reset voltage to prevent the output chattering. 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 11 Email: [email protected] http://www.aimtron.com.tw 01/08/05 AT5801 Preliminary 4-Channel driver + Power Controller Package Outlines (units:mm): QFP-44 10F-1, No.55, Tung Kuang Road, Hsinchu, Taiwan, R.O.C. Tel: 886-3-575-3058 Fax: 886-3-575-3015 12 Email: [email protected] http://www.aimtron.com.tw 01/08/05