LV8747T

Ordering number : ENA0967 Bi-CMOS LSI LV8747T Overview PWM Constant-Current Control Stepping Motor Driver and Switching Regulator Controller The LV8747T is a PWM constant-current control stepping motor driver and switching regulator controller IC. Features • Two circuits of PWM constant-current control stepping motor driver incorporated • Two circuits of switching regulator controller incorporated • Motor driver control power incorporated • Control of the stepping motor to W1-2 phase excitation possible • Chopping frequency selectable • Output short-circuit protection circuit incorporated • High-precision reference voltage circuit incorporated • Output-stage push-pull composition enabling high-speed operation • Timer latch type short-circuit protection circuit incorporated • Upper and lower regenerative diodes incorporated • Thermal shutdown circuit incorporated Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Driver output peak current 1 Driver output continuous current 1 Driver output peak current 2 Driver output continuous current 2 Regulator output current Symbol VM max MDIO peak1 MDIO max1 MDIO peak2 MDIO max2 SWIO max OUT1/OUT2 tw ≤ 10ms, duty 20% OUT1/OUT2 OUT3/OUT4 tw ≤ 10ms, duty 20% OUT3/OUT4 OUT5/OUT6 tw ≤ 1µs Conditions Ratings 38 1.75 1.5 0.8 0.5 500 Unit V A A A A mA 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 (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). 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 applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us 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. O1007 MS PC 20071001-S00003 No.A0967-1/21 LV8747T Continued from preceding page. Parameter Allowable power dissipation 1 Allowable power dissipation 2 Operating temperature Storage temperature *1 Specified circuit board : 100×100×1.6mm3 Symbol Pd max1 Pd max2 Topr Tstg : 4-layer glass epoxy printed circuit board Independent IC Our recommended four-layer substrate *1, *2 Conditions Ratings 0.4 4.85 -20 to +85 -55 to +150 Unit W W °C °C *2 For mounting to the backside by soldering, see the precautions. Allowable Operating Ratings at Ta = 25°C Parameter Supply voltage Logic input voltage VREF input voltage Regulator output voltage Regulator output current Error amplifier input voltage Timing capacity Timing resistance Triangular wave oscillation frequency Symbol VM VIN VREF VO IO VOA CT RT FOSC Conditions Ratings 10 to 35 0 to 5 0 to 3 VM-5 to VM 0 to 200 0 to 3 100 to 15000 5 to 50 10 to 800 Unit V V V V mA V pF kΩ kHz Electrical Characteristics at Ta = 25°C, VM = 24V, VREF = 1.5V Parameter General VM current drain Thermal shutdown temperature Thermal hysteresis width REG5 output voltage Motor Drivers [Charge pump block] Boost voltage Rise time Oscillation frequency Output block (OUT1/OUT2) Output on resistance RonU1 RonD2 Output leak current Diode forward voltage Output block (OUT3/OUT4) Output on resistance RonU2 RonD2 Output leak current Diode forward voltage Logic input block Logic pin input current IINL IINH Logic high-level input voltage Logic low-level input voltage Current control block VREF input current Chopping frequency Threshold voltage of current setting comparator IREF Fchop VHH VLH VHL VREF = 1.5V CHOP = 20kΩ VREF = 1.5V, I0 = H, I1 = H VREF = 1.5V, I0 = L, I1 = H VREF = 1.5V, I0 = H, I1 = L -0.5 45 0.291 0.191 0.093 62.5 0.300 0.200 0.100 75 0.309 0.209 0.107 µA kHz V V V VINH VINL VIN = 0.8V VIN = 5V 3 30 2.0 0.8 8 50 15 70 µA µA V V IOleak2 VD2 IO = -500mA, source side IO = 500mA, sink side VO = 35V ID = -500mA 1.0 1.5 1.1 1.8 1.4 50 1.3 Ω Ω µA V IOleak1 VD1 IO = -1.5A, source side IO = 1.5A, sink side VO = 35V ID = -1.5A 1.0 0.5 0.5 0.8 0.8 50 1.3 Ω Ω µA V VGH tONG Fcp VM = 24V VG = 10µF CHOP = 20kΩ 90 28.0 28.7 50 120 29.8 100 150 V ms kHz IM TSD ∆TSD Vreg5 PS = “H”, no load Design guarantee Design guarantee Ireg5 = -1mA 4.5 6 180 40 5.0 5.5 8 mA °C °C V Symbol Conditions min Ratings typ max Unit Continued on next page. No.A0695-2/21 LV8747T Continued from preceding page. Parameter Output short-circuit protection circuit Charge current Threshold voltage IOCP VthOCP VOCP = 0V 15 0.8 20 1.0 25 1.2 µA V Symbol Conditions min Ratings typ max Unit Switching regulator Controller [Reference voltage block] REG25 output voltage Input stability Load stability Internal regulator block REGVM5 output voltage Triangular wave oscillator block Oscillation frequency Frequency fluctuation Current setting pin voltage Protective circuit block Threshold voltage of comparator Standby voltage Source current Threshold voltage Latch voltage Soft start circuit block Source current Latch voltage ISOFT VltSOFT VSOFT = 0V ISOFT = 40µA 1.3 1.6 1.9 100 µA mV VthFB VstSCP ISCP VthSCP VltSCP ISCP = 40µA FB5, FB6 ISCP = 40µA VSCP = 0V 1.6 1.65 2.5 1.8 1.40 1.55 1.70 100 3.4 1.95 100 V mV µA V mV FOSC FDV VRT RT = 20kΩ, CT = 620pF VM = 10 to 35V RT = 20kΩ 0.91 72 80 1 0.98 88 5 1.05 kHz % V VregVM5 VregVM5 = 1mA VM-6.0 VM-5.0 V Vreg25 VDLI VDLO Ireg25 = -1mA VM = 10 to 35V Ireg25 = 0 to -3mA 2.475 2.500 2.525 10 10 V mV mV Low-input malfunction preventive circuit block Threshold voltage Hysteresis voltage Error amplifier block Input offset voltage Input offset current Input bias current OPEN open gain Common-phase input voltage range Common phase removal ratio Max output voltage Min output voltage Output sink current Output source current PWM comparator block Input threshold voltage (Fosc = 10kHz) Input bias current MAX duty cycle 1 (Fosc = 80kHz) MAX duty cycle 2 (Fosc = 160kHz) MAX duty cycle 3 (Fosc = 10kHz) Output block Output ON resistance RonU3 RonD3 Leak current ILEAK IO = -200mA, source side IO = 200mA, sink side VO = 35V 10 6 12 8 5 Ω Ω µA Don3 Don2 VT100 VT0 IBDT Don1 Duty cycle = 100% Duty cycle = 0% DT6 = 0.4V 5ch Internally fixed 5ch Internally fixed 6ch VREG25 divided by 17kΩ and 8kΩ 95 93 56 65 74 0.95 0.49 1.01 0.52 1.07 0.55 1 V V µA % % % ViO I iO Iib AV VCM CMRR VOH VOL Isi Iso FB = 2.5V FB = 2.5V 300 45 4.5 VM = 10 to 35V 80 5.0 0.2 600 75 0.5 1000 105 85 3.0 6 30 100 mV nA nA dB V dB V V µA µA VUT VHIS 8.3 240 8.7 340 9.1 440 V mV No.A0695-3/21 LV8747T Package Dimensions unit : mm (typ) 3337 TOP VIEW 9.0 7.0 0.5 SIDE VIEW BOTTOM VIEW (4.4) 9.0 (4.4) 0.125 7.0 64 12 0.4 (0.5) (1.0) SIDE VIEW 0.16 1.2MAX 0.1 SANYO : TQFP64K(7X7) No.A0695-4/21 LV8747T 6.0 Pd max – Ta *1 With Exposed Die-Pad substrate *2 Without Exposed Die-Pad Allowable power dissipation, Pd max – W 4.85 Four-layer substrate *1 4.0 Four-layer substrate *2 2.40 2.0 2.52 1.25 0 – 20 0 20 40 60 80 100 Ambient temperature, Ta – °C Substrate Specifications (Substrate recommended for operation of LV8747T) Size : 100mm × 100mm × 1.6mm (four-layer substrate [2S2P]) Material : Glass epoxy Copper wiring density : L1 = 85% / L4 = 90% L1 : Copper wiring pattern diagram L4 : Copper wiring pattern diagram Cautions 1) The data for the case with the Exposed Die-Pad substrate mounted shows the values when 80% or more of the Exposed Die-Pad is wet. 2) For the set design, employ the derating design with sufficient margin. Stresses to be derated include the voltage, current, junction temperature, power loss, and mechanical stresses such as vibration, impact, and tension. Accordingly, the design must ensure these stresses to be as low or small as possible. The guideline for ordinary derating is shown below : (1)Maximum value 80% or less for the voltage rating (2)Maximum value 80% or less for the current rating (3)Maximum value 80% or less for the temperature rating 3) After the set design, be sure to verify the design with the actual product. Confirm the solder joint state and verify also the reliability of solder joint for the Exposed Die-Pad, etc. Any void or deterioration, if observed in the solder joint of these parts, causes deteriorated thermal conduction, possibly resulting in thermal destruction of IC. No.A0695-5/21 LV8747T Pin Assignment 64 I14 63 I04 62 PS 61 VREF34 60 OCP 59 OCPM 58 OUT5 57 OUT6 56 REGVM5 55 GND 54 NON5 53 INV5 52 FB5 51 NON6 50 INV6 49 FB6 DT6 48 RT 47 CT 46 REG25 45 REG5 44 SCP 43 SOFT 42 VMSW 41 VREF12 40 CHOP 39 CP1 38 Top View CP2 37 VG 36 I01 35 I11 34 PGND2 PGND1 32 OUT2B OUT2B OUT2A OUT2A OUT1B OUT1B OUT1A OUT1A PHA1 33 1 GND 2 PHA4 3 OUT4B 4 RNF4 5 OUT4A 6 VM34 LV8747T 7 OUT3B 8 RNF3 9 OUT3A 10 PGND3 11 I03 12 I13 13 PHA3 14 I02 15 I12 16 PHA2 VM12 VM12 RNF2 RNF2 RNF1 28 17 18 19 20 21 22 23 24 25 26 27 29 RNF1 30 31 No.A0695-6/21 Block Diagram CP1 CP2 OUT2A OUT2B RNF2 RNF3 OUT3A CT OUT3B VM34 OUT4A OUT4B RNF4 OUT6 OUT5 RT VG RNF1 OUT1A OUT1B VM12 REG25 VMSW 2.5V reference voltage Triangular wave oscillator Internal ; reference voltage VMSW 5V REG5 Charge pump + Constant current + + + + - 5V Output preamplifier stage Output preamplifier stage Output preamplifier stage Output preamplifier stage Output preamplifier stage Output preamplifier stage Output preamplifier stage PGND2 Output control logic Output control logic + Current selection DAC VM Output preamplifier stage PGND1 NON5 INV5 FB5 LV8747T PGND3 Output control logic Output control logic + NON6 + + - INV6 FB6 SOFT VREF12 + - TSD + - Current selection DAC + Current selection DAC Current selection DAC + + + LVS Over-current protection circuit GND Oscillation circuit Internal reference voltage VM-5V Short-circuit protection circuit SCP GND PHA2 I02 I12 VREF34 I03 I13 PHA3 OCP OCPM PHA4 I04 I14 CHOP I10 I11 PHA1 PS REGVM5 DT6 No.A0695-7/21 LV8747T Pin Functions Pin No 24 25 30 31 26 27 28 29 22 23 18 19 20 21 35 34 33 14 15 16 40 32 17 6 9 7 8 5 3 4 11 12 13 63 64 2 61 10 60 59 39 62 36 38 37 41 44 56 45 46 47 42 43 54 I01 I11 PHA1 I02 I12 PHA2 VREF12 PGND1 PGND2 VM34 OUT3A OUT3B RNF3 OUT4A OUT4B RNF4 I03 I13 PHA3 I04 I14 PHA4 VREF34 PGND3 OCP OCPM CHOP PS VG CP1 CP2 VMSW REG5 REGVM5 REG25 CT RT SOFT SCP NON5 Driver 4ch Output phase shift input pin Driver 3/4ch Output current setting reference voltage input pin Driver output Power GND Pin to connect to the output short-circuit state detection time setting capacitor Over-current mode changeover pin Pin to connect to the resistor to set the chopping frequency Driver Power save input pin Charge pump capacitor connection pin Charge pump capacitor connection pin Charge pump capacitor connection pin Power connection pin Internal regulator output pin Internal regulator output pin Regulator Reference voltage output pin Regulator Timing capacity external pin Regulator Timing resistor external pin Regulator Soft start setting pin Regulator Timer and latch setting pin Regulator Error amplifier 5 input + pin Continued on next page. Driver 3ch Output phase shift input pin Driver 4ch Output current setting input pin Driver 2ch Output phase shift input pin Driver 1/2ch Output current setting reference voltage input pin Driver output Power GND Driver output Power GND Driver 3/4ch Power connection pin Driver 3ch OUTA output pin Driver 3ch OUTB output pin Driver 3ch Current sense resistor connection pin Driver 4ch OUTA output pin Driver 4ch OUTB output pin Driver 4ch Current sense resistor connection pin Driver 3ch Output current setting input pin Driver 1ch Output phase shift input pin Driver 2ch Output current setting input pin Driver 1ch Output current setting input pin RNF2 Driver 2ch Current sense resistor connection pin OUT2B Driver 2ch OUTB output pin OUT2A Driver 2ch OUTA output pin RNF1 Driver 1ch Current sense resistor connection pin OUT1B Driver 1ch OUTB output pin OUT1A Driver 1ch OUTA output pin Pin VM12 Driver 1/2ch Pin to connect to power supply Description No.A0695-8/21 LV8747T Continued from preceding page. Pin No 53 52 58 51 50 49 57 48 55 1 INV5 FB5 OUT5 NON6 INV6 FB6 OUT6 DT6 GND GND Pin Regulator Error amplifier 5 input – pin Regulator Error amplifier 5 output pin Regulator Output 5 Regulator Error amplifier 6 input + pin Regulator Error amplifier 6 input – pin Regulator Error amplifier 6 output pin Regulator Output 6 Regulator Output 6 MAX DUTY setting pin GROUND GROUND Description No.A0695-9/21 LV8747T Equivalent Circuits Pin No. 2 11 12 13 14 15 16 33 34 35 59 62 63 64 36 37 38 Pin Name PHA4 I03 I13 PHA3 I02 I12 PHA2 PHA1 I11 I01 OCPM PS I04 I14 VG CP2 CP1 100kΩ 10kΩ Equivalent Circuit REG5 GND VMSW 38 37 36 REG5 100Ω GND 3 4 5 6 7 8 9 10 OUT4B RNF4 OUT4A VM34 OUT3B RNF3 OUT3A PGND3 500Ω 6 REG5 59 37 GND 10 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 PGND2 OUT2B OUT2B RNF2 RNF2 OUT2A OUT2A VM12 VM12 OUT1B OUT1B RNF1 RNF1 OUT1A OUT1A PGND1 500Ω 4 8 24 25 REG5 22 23 30 31 18 19 26 27 GND 17 32 20 28 21 29 Continued on next page. No.A0695-10/21 LV8747T Continued from preceding page. Pin No. 40 61 Pin Name VREF12 VREF34 Equivalent Circuit REG5 500Ω GND 39 CHOP REG5 1kΩ GND 60 OCP REG5 500Ω GND 44 REG5 VMSW 2kΩ 26kΩ GND 45 REG25 REG5 74kΩ VMSW 5kΩ GND Continued on next page. 6.25kΩ No.A0695-11/21 LV8747T Continued from preceding page. Pin No. 49 50 51 52 53 54 Pin Name FB6 INV6 NON6 FB5 INV5 NON5 2kΩ 500Ω 2kΩ 500Ω Equivalent Circuit REG5 VMSW VMSW 50 53 GND VMSW 51 54 48 DT6 500Ω 49 52 REG5 VMSW 500Ω GND 46 47 CT RT REG5 500Ω 500Ω 500Ω 500Ω 500Ω GND VMSW 46 57 58 OUT6 OUT5 47 VMSW REGVM5 Continued on next page. No.A0695-12/21 LV8747T Continued from preceding page. Pin No. 56 Pin Name REGVM5 Equivalent Circuit VMSW 150KΩ 65KΩ GND 42 SOFT REG5 500Ω 500Ω GND VMSW 43 SCP REG5 500Ω GND VMSW No.A0695-13/21 LV8747T Stepping Motor Driver OUT1/OUT2(OUT3/OUT4) (1) Output control logic Parallel input (Note) PS Low High High PHA * Low High OUTA Off Low High Output OUTB Off High Low Current direction Standby OUTB→OUTA OUTA→OUTB (Note) : Enter either “H” or “L” externally for the logic input pin. Never use the input pin in the OPEN state. (2) Constant-current setting I0 (Note) High Low High Low I1 (Note) High High Low Low IO = (VREF/5) /RNF IO = ((VREF/5) /RNF) × 2/3 IO = ((VREF/5) /RNF) × 1/3 IO = 0 Output current (Note) : Enter either “H” or “L” externally for the logic input pin. Never use the input pin in the OPEN state. Set current calculation method The constant-current control setting of STM driver is determined as follows from the setting of VREF voltage, and I0 and I1, and resistor (RNF) connected between RNF and GND : Iconst [A] = ((VREF [V] /5) /RNF [Ω]) × attenuation factor (Example) For VREF = 1.5V, I0 = I1 = “H” and RNF = 1Ω ; Iconst = 1.5V/5/1Ω × 1 = 0.3A (3) Setting the chopping frequency For constant-current control, chopping operation is made with the frequency determined by the external resistor (connected to the CHOP pin). The chopping frequency to be set with the resistance connected to the CHOP pin (pin 39) is as shown below. 140 Chopping frequency 120 Chopping frequency (kHz) 100 80 60 40 20 0 0 10 20 30 40 50 60 70 80 CHOP resistance (kΩ) The recommended chopping frequency ranges from 30kHz to 120kHz. No.A0695-14/21 LV8747T (4) Constant-current control time chart (chopping operation) (Sine wave increasing direction) STEP Set current Set current Coil current Forced CHARGE section fchop Current mode CHARGE SLOW FAST CHARGE SLOW FAST (Sine wave decreasing direction) STEP Set current Coil current Forced CHARGE section Set current fchop Current mode CHARGE SLOW FAST Forced CHARGE section FAST CHARGE SLOW In each current mode, the operation sequence is as described below : • At rise of chopping frequency, the CHARGTE mode begins.(The section in which the CHARGE mode is forced regardless of the magnitude of the coil current (ICOIL) and set current (IREF) exists for 1/16 of one chopping cycle.) • The coil current (ICOIL) and set current (IREF) are compared in this forced CHARGE section. When (ICOIL