BD7959EFV

System Motor Driver ICs for CD / DVD / Blu-ray Drive and Recorder System Motor Driver IC for Half Height Drive (3 Sensors) BD7959EFV No.10012EAT02 ●Description BD7959EFV are ICs, developed for the spindle motor, actuator coil, tilt coil, stepping motor, SA (Spherical Aberration) motor and the loading motor drive of the Blu-ray Drive. The spindle, stepping and SA motor driver use power MOSFET to reduce power consumption and the actuator, tilt, and loading driver use a linear BTL drive system to reduce noise. ●Features 1) Correspondence to the Blu-ray drive control with built-in 9ch. 2) The spindle motor driver achieves low noise by ROHM's own energizing method. 3) Highly effective spindle, stepping and SA driver is achieved by PWM control driver. And the output current detection resistance of stepping and SA driver is unnecessary by built-in internal detection circuit. 4) The actuator , tilt and loading driver achieve low noise by using linear BTL drive system. 5) ON/OFF of loading and other channels, brake mode of spindle driver and standby mode are selectable by the two control terminals. 6) Built-in thermal-shut down circuit. 7) Built-in triangular wave generator. 8) Improved heat radiation efficiency utilizing HTSSOP package. ●Applications Optical disk equipment, such as Blu-ray recorders ●Absolute maximum ratings Parameter POWER MOS power supply voltage Preblock/BTL power block power supply voltage PWM control block power supply voltage Pick-up pull charge capacitor terminal voltage Power dissipation Operating temperature range Storage temperature Joint part temperature #1 #2 Symbol SPVM,SL/SAVM Vcc,AVM DVcc CHG_C Pd Topr Tstg Tjmax Ratings 15 15 7 15 2.0 -20 ~ 75 -55 ~ 150 150 #2 #1 Unit V V V V W ℃ ℃ ℃ POWER MOS output terminals (35~42pin, 45 ~ 47pin) are contained. PCB mounting (70mmX70mmX1.6mm, occupied copper foil is less than 3%, glass epoxy standard board). Reduce by 16mW/℃ over 25℃ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/18 2010.06 - Rev.A BD7959EFV ●Recommended operating conditions (Set the power supply voltage with consideration to power dissipation) Parameter Spindle driver powerblock power supply voltage Sled / SA motor driver powerblock power supply voltage Preblock / Loading driver power supply voltage Actuator driver power block power supply voltage PWM control block power supply voltage Spindle driver output current Actuator, sled/SA motor, loading motor driver output current #3 #4 Technical Note Symbol SPVM SL/SAVM Vcc AVM DVcc Iosp Ioo Ratings Min. － － 10.8 4.3 4.3 － － Typ. Vcc #3 Vcc #3 12 5.0 5.0 1.2 0.5 Max. － － 13.2 5.5 5.5 2.5 #4 0.8 Unit V V V V V A A Set the same supply voltage to SPVM, SLVM and Vcc. The current is guaranteed 3.0A in case of the Short-circuit braking mode and the current which is turned on/off in a duty-ratio of less than 1/10 with a maximum on-time of 5msec. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/18 2010.06 - Rev.A BD7959EFV Technical Note ●Electrical characteristics (Unless otherwise noted, Ta=25℃,Vcc=SL/SAVM=12V,DVcc=AVM=5V,SPRNF=0.33Ω,RL=8Ω,RLSP=2Ω,PICKCTL=3.3V) Limits Parameter Symbol Unit Condition MIN. TYP. MAX. Circuit current Quiescent current 1 Quiescent current 2 Quiescent current 3 Standby-on current 1 Standby-on current 2 Sled driver block Input dead zone (one side) Input output gain Output On resistor (top and bottom) Output limit current PWM frequency SA driver block Input dead zone (one side) Input output gain Output On resistor (top and bottom) Output limit current PWM frequency Spindle driver block Input dead zone (one side) Input output gain Output On resistor (top and bottom) Output limit current PWM frequency Actuator driver block Output offset voltage Output saturation voltage Voltage gain Loading driver block Output offset voltage Output saturation voltage Voltage gain CTL1,CTL2、PickCTL terminal Input high voltage Input low voltage Others VC drop-muting Vcc drop-muting VMVC VMVcc 0.4 3.4 0.7 3.8 1.0 4.2 V V VCTLH VCTLL 2.0 GND － － 3.7 0.5 V V VOFLD VOLD GVLD -50 － 15.5 0 2.2 17.5 50 2.9 19.5 mV V dB IL=500mA VOFFT VOFT GVFT -50 － 15.5 0 0.9 17.5 50 1.8 19.5 mV V dB IL=500mA VDZSP gmSP RONSP ILIMSP fosc 0 0.91 － 0.88 － 10 1.15 1.5 1.1 100 40 1.39 2.6 1.32 － mV A/V Ω A kHz SPRNF=0.33Ω IL=500mA SPRNF=0.33Ω VDZSA gmSA RONSA ILIMSA fosc 0 0.141 － 280 － 60 0.17 2.2 400 100 120 0.199 3.3 520 － mV A/V Ω mA kHz RIN1=68kΩ, RIN2=75kΩ IL=200mA VDZSL gmSL RONSL ILIMSL fosc 0 1.0 － 0.84 － 20 1.25 2.2 1.2 100 80 1.5 3.3 1.56 － mV A/V Ω A kHz RIN1,2=62kΩ IL=500mA IQ1 IQ2 IQ3 IST1 IST2 － － － － － 12 7 7 － － 24 12 12 0.5 1.0 mA mA mA mA mA Vcc (Loading OFF) Vcc (Loading ON) DVcc Vcc DVcc *This product is not designed to be radiation-resistant. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 3/18 2010.06 - Rev.A BD7959EFV ●Block diagram Technical Note Current LIMIT HU+ HUHV+ HVHW+ HWVcc LDIN LDO- 1 2 3 4 5 80kΩ 40kΩ 54 SPIN 53 BTHC BOTTOM HOLD FG HALL MATRIX 52 SPVM 51 FG 50 SPCNF STBY/ BRAKE CONTROL 6 40kΩ 80kΩ 49 CTL1 48 CTL2 47 W 7 8 9 40kΩ 80kΩ 105kΩ 105kΩ 105kΩ 105kΩ 105kΩ 80kΩ PWM 25kΩ 46 V 45 U 44 SPGND 43 SL/SAGND LDO+ 10 AGND 11 TKO- 12 TKO+ 13 25kΩ 25kΩ 25kΩ 25kΩ CURR.FEED 42 SLO241 SLO2+ 40 SLO139 SLO1+ 38 SAO237 SAO2+ 36 SAO135 SAO1+ 34 N.C.(OPEN) 33 N.C.(pull-up to Vcc) 6kΩ PRE Logic 105kΩ 25kΩ TLO+ 14 TLO- 15 CHG_C 16 FCO- 17 FCO+ 18 PickCTL 19 TL CTL FC CTL FF CURR. LIMIT 105kΩ 105kΩ 25kΩ PRE Logic 25kΩ FF CURR.FEED CURR.FEED 105kΩ 105kΩ 105kΩ 105kΩ 25kΩ PRE Logic 25kΩ FF CURR. LIMIT 25kΩ PRE Logic 25kΩ ICTL 20 AVM 21 FCIN 22 TLIN 23 TKIN 24 VC 25 DVcc 26 DGND 27 FF CURR.FEED Pick-up pull CTL LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT 32 SLIN2 6kΩ 31 SLIN1 30 SL/SAVM 4.3kΩ 29 SAIN2 4.3kΩ 28 SAIN1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/18 2010.06 - Rev.A BD7959EFV ●Pin description No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Symbol HU+ HUHV+ HVHW+ HWVcc LDIN LDOLDO+ AGND TKOTKO+ TLO+ TLOCHG_C FCOFCO+ Pick CTL ICTL AVM FCIN TLIN TKIN VC DVcc DGND Description Hall amp U positive input Hall amp U negative input Hall amp V positive input Hall amp V negative input Hall amp W positive input Hall amp W negative input BTL pre and Loading power supply Loading driver input Loading driver negative output Loading driver positive output BTL driver block power ground Tracking driver negative output Tracking driver positive output Tilt driver positive output Tilt driver negative output Pick-up pull charge capacitor terminal Focus driver negative output Focus driver positive output Pick-up pull control terminal Pick-up pull current control terminal Actuator driver block power supply Focus driver input Tilt driver input Tracking driver input Reference voltage input PWM block control power supply Pre-ground No. 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Symbol SAIN1 SAIN2 SL/SAVM SLIN1 SLIN2 N.C. N.C. SAO1+ SAO1SAO2+ SAO2SLO1+ SLO1SLO2+ SLO2- Technical Note Description SA driver 1 input SA driver 2 input Sled / SA driver pre and power supply Sled driver1 input Sled driver2 input N.C. (pull-up to Vcc) N.C. (OPEN) SA driver1 positive output SA driver1 negative output SA driver2 positive output SA driver1 negative output Sled driver1 positive output Sled driver1 negative output Sled driver2 positive output Sled driver2 negative output Sled/SA driver block pre and power ground Spindle driver power ground Spindle driver output U Spindle driver output V Spindle driver output W Driver logic control 2 input Driver logic control 1 input Spindle driver feedback filter Frequency generator output Spindle driver power supply Capacitor connection terminal for spindle current bottom holding Spindle driver input 43 SL/SAGND 44 45 46 47 48 49 50 51 52 53 54 SPGND U V W CTL2 CTL1 SPCNF FG SPVM BTHC SPIN *Positive/negative of the output terminals is determined in reference to those of the input terminals. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 5/18 2010.06 - Rev.A BD7959EFV ●Equivalent-circuit diagram of the terminals Spindle Driver output 52 Technical Note Spindle driver current detection input 2kΩ Spindle driver error amplifier input pin 7pin 200kΩ 6kΩ 52 47 46 45 53 1.03kΩ 5kΩ 5kΩ 44 Hall signal input 26 pin 26 pin 50kΩ 26 pin FG signal input 26 pin Spindle driver input 26 pin 26 pin 1 3 5 50kΩ 2 4 6 26 pin 4P 26 pin 200Ω 51 54 12kΩ 10kΩ 27 pin Spindle driver feedback filter pin 7 pin 7 pin 10kΩ 500Ω PWM driver output(SLED1,2 SA1,2) 30 PWM driver input(SLED1,2) 26 pin 26 pin 50 500Ω 10kΩ 500Ω 39 41 35 37 36 38 40 42 31 32 6kΩ 5kΩ 5p 43 PWM driver input (SA1,2) BTL driver output(FC,TK,TL) 21 BTL driver output(LD) 7 26 pin 26 pin 28 29 4.3kΩ 13 14 18 12 15 17 10 9 6p 11 11 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 6/18 2010.06 - Rev.A BD7959EFV Technical Note BTL driver input(FC,TK,TL,LD) 7 pin Driver logic control input (CTL1,2) 8 22 23 24 200Ω Pick-up pull control pin 7 pin Pick-up pull current control pin 7 pin 16 220kΩ 50kΩ 19 50kΩ 20 Reference voltage input 7pin 25 26pin 50kΩ 200Ω 68kΩ 50kΩ 26pin 26pin 72.3kΩ 24kΩ 26pin (×4ch) (×2ch) 26pin 10kΩ (×2ch) 26pin 10kΩ 10kΩ (×2ch) (×2ch) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 7/18 2010.06 - Rev.A BD7959EFV ●Test circuit VSPIN Technical Note Current LIMIT HU+ 470p HV+ HW+ VCC PWM LDIN CHG_C(=VCC) pickCTL ICTL(=VCC) LEVEL SHIFT AVM FCIN TLIN TKIN DVCC LEVEL SHIFT VC OUT+ OUT OUT- OUTSP U W V 2 1 RLSP SW-RL 2 1 47µH RLSP SW-RL RLSP 47µH 47µH V 47µH RL Vo SW-RL 2 1 2 1 SW-IL IL IL 2 1 SW-IL 2-W 2-U 2-V LEVEL SHIFT 1 HU+ 2 HU3 HV+ 4 HV5 HW+ 6 HW7 IQVC VCC 8 LDIN 9 LDO10 LDO+ 11 AGND 12 TKO13 TKO+ 14 TLO+ 15 TLO16 CHG_C 17 FCO18 FCO+ 19 PickCTL 20 ICTL 21 AVM 22 FCIN 23 TLIN 24 TKIN 25 VC 26 IQDV DVCC 27 DGND BOTTOM HOLD FG STBY/BRAKE CONTROL 40kΩ 80kΩ 80kΩ 40kΩ 40kΩ 80kΩ 105kΩ 105kΩ 105kΩ 105kΩ 105kΩ 105kΩ 105kΩ 80kΩ 25kΩ 25kΩ 25kΩ 25kΩ 25kΩ CURR.FEED 25kΩ 25kΩ FF CURR. LIMIT 105kΩ 25kΩ FF CURR.FEED CURR.FEED 105kΩ 105kΩ 105kΩ 105kΩ 25kΩ 25kΩ CURR. LIMIT 25kΩ FF 25kΩ FF CURR.FEED Pick-up pull CTL 6kΩ LEVEL SHIFT 6kΩ 4.3kΩ 4.3kΩ 54 SPIN 53 BTHC 52 SPVM 51 FG 50 SPCNF 49 CTL1 48 CTL2 47 W 46 V 45 U 44 SPGND 43 SL/SAGND 42 SLO241 SLO2+ 40 SLO139 SLO1+ 38 SAO237 SAO2+ 36 SAO135 SAO1+ 34 N.C. Vcc 33 N.C. 32 62k SLIN2 31 62k SLIN1 30 SL/SAVM 29 75k SAIN2 28 68k SAIN1 VRNF 0.33 HALL MATRIX PRE Logic PRE Logic FC TL CTL CTL PRE Logic PRE Logic +OUT VSLIN2 VSLIN1 VSAIN2 VSAIN1 1 IL SW-IL www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. SAO1 +OUT SAO2 +OUT SLO1 +OUT SLO2 W OUT VU SP HU- VCC 0.01μF CTL1 CTL2 2 100k SP DVCC -+ OUT +OUT LD TK FC TL -+ OUT -+ OUT SL/SAVM 8/18 2010.06 - Rev.A BD7959EFV ●Functional description 1. Technical Note Driver logic control terminal 1and 2 (CTL1,2) All drivers and spindle-drive braking modes can be switched on/off by inputting combinations of H-level signal (higher than 2V and lower than 3.7V) and L-level signal (lower than 0.5V) to these terminals. CTL1 L H － CTL1 L H ① ② ③ CTL2 L L H CTL2 H H Spindle × × ○ Sled × × ○ SPIN ＞ VC SA × × ○ Focus × × ○ Tracking × × ○ SPIN Tilt × × ○ ＜ VC ③ ④ Loading × ○ × ① ② ○:ON ×:OFF Forward-rotation mode Forward-rotation mode Reverse-rotation braking mode Short-circuit braking mode ④ 2. Stand-by mode The IC is brought into stand-by mode, and its power dissipation can be limited. Drivers muting All output channels, except the loading, are muted and their outputs are turned off. Reverse-rotation braking mode (spindle) A reverse-rotation torque is applied when SPIN < VC. Reverse-rotation is detected with SPIN input and Hall input. If the spindle detects reverse rotation when SPIN < VC, all the output are shorted to GND. Short-circuit braking mode (spindle) All the spindle driver outputs are shorted out to GND when SPIN < VC. Input/Output timing chart HU+ HUForward rotation 》 Forward rotation 》 Reverse rotation 》 Forward rotation HV+ HV- 》 》 》 HW+ HW- 》 》 》 SPIN Vc 》 》 》 SOURCE U MID SINK 》 》 》 SOURCE V MID SINK 》 》 》 SOURCE W MID SINK 》 》 》 ABCDEF J G H I 　K L 　 Ⅲ）Reversal prevention Ⅳ）Short brake Ⅱ）Reverse Ⅰ）Forward rotaion brake rotation mode www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/18 2010.06 - Rev.A BD7959EFV 3. Pick-up lens pull function Pick CTL L H Function ON Normal (function:OFF) ① ② Technical Note ①FOCUS and Tilt load are driven by the charge of the electrolytic capacitor connected with the CHG_C terminal (16pin). The load drive current flows as follows. FCO- (17pin) → FCO+ (18pin) TLO- (15pin) → TLO+ (14pin) And the load drive current and time can be adjusted with the resistor and capacitor of CHG_C (16pin) and ICTL (20pin). ②Please turn off this function by PickCTL=H when you use a usual driver. 4. Hall input(1 ~ 6pin） The hall element can use both a series connection and a parallel connection. However, please set the hall input voltage with 1.5-3.8V and 75mVpp or more (one side). DVCC DVCC HU HU HV HW HV HW ＜Parallel connection. ＞ ＜Series connection＞ 5. Torque command/ output current detection terminals The relation between the torque command input and the output current detection terminals input is expressed in the figure below: SPRNF Forward rotation Input dead zone + Input dead zone - VC SPIN The input-output gain (gm) and the otuput-limit current (ILIM) depend on SPRNF (output current detection resistor). 6. 7. PWM oscillation frequency The PWM oscillation for driving the spindle, sled and SA is free running. The oscillating frequency is 100kHz(typ.) Muting function 7-1) VC-drop muting When the voltage at VC terminal drops to a value lower than 0.7V(Typ.), the outputs of all the channels are turned off. Set the VC terminal voltage higher than 1.0V. 7-2) Vcc-drop muting When the voltage at DVcc terminal and Vcc terminal drops to a value lower than 3.8V(Typ.), the outputs of all the channels are turned off. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/18 2010.06 - Rev.A BD7959EFV 8. Technical Note Thermal-shut down Thermal-shutdown circuit (over-temperature protection circuit) is built in to prevent the IC from thermal breakdown. Please use the IC according to the thermal loss allowed in the package. In case the IC is left running over the allowed loss, the junction temperature rises, and the thermal-shutdown circuit works at a junction temperature of 175℃(Typ.) (All other channel outputs are turned off). When the junction temperature drops to 150℃ (Typ.) the IC resumes operation. Protect system1 The actuator protect system disables all output that exceeds 130ms (Typ.) at maximum power. *It is possible to reset the protect system by CTL1,2=Low (Stand-by) in the protect operates. 9. 10. Protection function 2 Function to protect against destruction of output terminal (Focus, Tracking, Tilt, and Loading) when output pin connects to GND or Vcc. ①When SINK side POWER transistor has been turned on, if the output current (400mA or more) and the output voltage (Vcc-1VF or more) are detected, the channel concerned will be turned off. ②When SOURCE side POWER transistor has been turned on, if the output current (1.6A or more) are detected, the channel concerned will be turned off. *It is possible to reset the protect system by CTL1,2=Low (Stand-by) in the protect operates. 11. 33pin, 34pin Please 33pin is a pull-up in Vcc and use, though it is N.C. Please make to open and use 34pin. ●External parts description 1). Filtering capacitor It is recommended to connect 0.01µF filtering capacitor to SPCNF terminal. This capacitor filters PWM output carrier frequency. Dispersion of the cut off frequency due to circuit board wiring layout is taken into consideration. If it is difficult to filter at the recommended value due to circuit board wiring led round, the capacity can be increased. In this case, note that the output transmission delay time may be longer. 2). Bypass capacitor Please connect a bypass capacitor (0.1µF) across the supply voltage lines close to the IC pins. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/18 2010.06 - Rev.A BD7959EFV ●Notes for use Technical Note 1. Absolute maximum ratings We are careful enough for quality control about this IC. So, there is no problem under normal operation, excluding that it exceeds the absolute maximum ratings. However, this IC might be destroyed when the absolute maximum ratings, such as impressed voltages (Vcc, VM) or the operating temperature range(Topr), is exceeded, and whether the destruction is short circuit mode or open circuit mode cannot be specified. Please take into consideration the physical countermeasures for safety, such as fusing, if a particular mode that exceeds the absolute maximum rating is assumed. 2. Reverse polarity connection of the power supply Connecting the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply lines. An external direction diode can be added. 3. Power supply line Design PCB layout pattern to provide low impedance GND and supply lines. To obtain a low noise ground and supply line, separate the ground section and supply lines of the digital and analog blocks. Furthermore, for all power supply terminals to ICs, connect a capacitor between the power supply and the GND terminal. When applying electrolytic capacitors in the circuit, note that capacitance characteristic values are reduced at low temperatures. 4. GND voltage Ground-GND potential should maintain are the minimum ground voltage level. Furthermore, no terminals should be lower than the GND potential voltage including an electric transients. 5. Thermal design Do not exceed the power dissipation (Pd) of the package specification rating under actual operation, and please design enough temperature margins. 6. Inner-pin shorts and mounting errors Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any connection error or if positive and ground power supply terminals are reserved. The IC may also be damaged if pins are should together or are shorted to other circuits power lines. 7. Operation in a strong electromagnetic field Use caution when using the IC in the presence of a strong electromagnetic field as doing so many cause the IC to malfunction. 8. ASO(Area of Safety Operation.) Do not exceed the maximum ASO and the absolute maximum ratings of the output driver. 9. TSD(Thermal shut-down) The TSD is activated when the junction temperature (Tj) reaches 175℃(with +/-25℃ hysteresis), and the output terminal is switched to Hi-z. The TSD circuit aims to intercept IC from high temperature. The guarantee and protection of IC are not purpose. Therefore, don't use this IC after TSD circuit operates, or don't use it for assumption that operates the TSD circuit. 10. Capacitor between the output and GND If a large capacitor is connected between the output and GND, this IC might be destroyed when Vcc becomes 0V or GND, because the electric charge accumulated in the capacitor flows to the output. Please set said capacitor to smaller than 0.1µF. 11. The capacitor between SPVM (52pin) and GND The capacitor between SPVM (52pin) and GND absorbs a sudden charge in the voltage and the current on account of PWM drive, and suppresses disorder of Vcc voltage. However if a capacitor becomes far from IC, the effect will fall under the influence of wiring impedance etc. Please arrange the capacitor between SPVM (52pin) and GND near the IC. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/18 2010.06 - Rev.A BD7959EFV Technical Note 12. Wiring for SPRNF Considering the wiring resistance, connect each detecting resistor as close as possible to the current detection terminals for the spindle drive SPRNF. 12V This range of wiring is considered as detection resistor. Please wire as wide and short as possible. Close to IC 52 + SPRNF SPVM 7 Vcc 13. Earth wiring pattern Use separate ground lines for control signals and high current power driver outputs. Because these high current output that flow to the wire impedance change the GND voltage for control signal. Therefore, each ground terminal of IC must be connected at the one point on the set circuit board. As for GND of external parts, it is similar to the above-mentioned. 14. Each input terminal This IC is a monolithic IC, and has P+ isolation and P substrate for the element separation. Therefore, a parasitic PN junction is firmed in this P-layer and N-layer of each element. For instance, the resistor or the transistor is connected to the terminal as shown in the figure below. When the GND voltage potential is greater than the voltage potential at Terminals A or B, the PN junction operates as a parasitic diode. In addition, the parasitic NPN transistor is formed in said parasitic diode and the N layer of surrounding elements close to said parasitic diode. These parasitic elements are formed in the IC because of the voltage relation. The parasitic element operating causes the wrong operation and destruction. Therefore, please be careful so as not to operate the parasitic elements by impressing to input terminals lower voltage than GND(P substrate). Please do not apply the voltage to the input terminal when the power-supply voltage is not impressed. Moreover, please impress each input terminal lower than the power-supply voltage or equal to the specified range in the guaranteed voltage when the power-supply voltage is impressing. Resistor Terminal-A Terminal-A Terminal-B C B E B Parasitic element C E P+ P P + Transistor(NPN) Terminal-B P+ P P+ P-Substrate Parasitic element Parasitic element P-Substrate Surrounding elements Parasitic element GND GND GND GND Simplified structure of IC 15. Inspection by the set circuit board The stress might hang to IC by connecting the capacitor to the terminal with low impedance. Then, please discharge electricity in each and all process. Moreover, in the inspection process, please turn off the power before mounting the IC, and turn on after mounting the IC. In addition, please take into consideration the countermeasures for electrostatic damage, such as giving the earth in assembly process, transportation or preservation. 16. Belly metal Belly metal pattern is attached to the GND on the inside of the package. Make sure to the external GND. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 13/18 2010.06 - Rev.A BD7959EFV ●Application circuit Technical Note HU+ HALL1 Current LIMIT 1 2 3 4 5 80kΩ 40kΩ 54 BOTTOM HOLD FG 53 52 51 50 STBY/ BRAKE CONTROL 80kΩ 40kΩ SPIN BTHC SPVM FG HUHV+ SPIN 470p 0.33Ω 12V HALL MATRIX HALL2 HVHW+ 0.1µF HALL3 HWVcc LDIN LDOM LDO+ AGND TKO- DVCC 12V LDIN 6 7 8 9 10 11 12 13 105kΩ 40kΩ 80kΩ 105kΩ 105kΩ 105kΩ 105kΩ 105kΩ 49 48 47 SPCNF 0.01µF CTL1 CTL2 W V U SPGND SL/SAGND SLO2SLO2+ SLO1SLO1+ SAO2SAO2+ SAO1SAO1+ N.C.(OPEN) STM STM 100k CTL2 80kΩ PWM 25kΩ 46 45 44 43 SP motor 25kΩ 25kΩ 25kΩ 25kΩ Tracking coil TKO+ TLO+ CURR.FEED 42 41 40 39 38 37 36 35 34 LEVEL SHIFT PRE Logic FF CURR. LIMIT 25kΩ 25kΩ 14 15 16 17 18 19 TL FC CTL CTL Tilt coil 12V Focus coil PickCTL 12V 5V FCIN TLIN TKIN VC (1.65V) 5V 105kΩ 105kΩ TLOCHG_C FCOFCO+ PickCTL ICTL AVM FCIN TLIN TKIN VC DVcc DGND PRE Logic 25kΩ FF CURR.FEED CURR.FEED FF CURR. LIMIT 105kΩ 105kΩ 105kΩ 105kΩ 25kΩ PRE Logic 25kΩ 25kΩ PRE Logic 25kΩ FF CURR.FEED 20 21 22 23 24 25 26 27 Pick-up pull CTL N.C. (pull-up to Vcc) 33 12V 6kΩ 32 31 30 SLIN2 SLIN1 62k SLIN2 SLIN1 12V SAIN2 SAIN1 6kΩ LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT 62k SL/SAVM SAIN2 SAIN1 75k 68k 4.3kΩ 29 28 4.3kΩ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 14/18 2010.06 - Rev.A BD7959EFV ●Connecting wires of application board Technical Note www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 15/18 2010.06 - Rev.A BD7959EFV ●Pattern drawing of application board Technical Note Silk screen on the surface Wiring pattern on the surface Silk screen on the back Wiring pattern on the back www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 16/18 2010.06 - Rev.A BD7959EFV ●Electrical characteristic curves 6 6 Technical Note 6 4 4 4 TKO(+)-TKO(-) [V] FCO(+)-FCO(-) [V] TLO(+)-TLO(-) [V] 2 2 2 0 0 0 -2 -2 -2 -4 -4 -4 -6 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 -6 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 -6 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 INPUT VOLTAGE [V] INPUT VOLTAGE [V] INPUT VOLTAGE [V] Fig.1 Focus driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) 12 Fig.2 Tracking driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) 1400 Fig.3 Tilt driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) 3 50 8 1200 3 00 OUTPUT CURRENT [mA] OUTPUT CURRENT [mA] -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 LDO(+)-LDO(-) [V] 1000 2 50 4 800 2 00 0 600 1 50 -4 400 200 1 00 -8 50 - 12 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0 0 -2 .0 -1 .5 - 1.0 - 0.5 0.0 0.5 1.0 1 .5 2 .0 INPUT VOLTAGE [V] INPUT VOLTAGE [V] INPUT VOLTAGE [V] Fig.4 Loading driver I/O characteristic (Ta=27℃,RL=12Ω+47µH) 48 0 Fig.5 Sled driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) Fig.6 SA driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) 40 0 VCC-BTHC [mV] 32 0 24 0 16 0 80 0 - 2.0 - 1.5 - 1.0 -0 .5 0 .0 0 .5 1 .0 1 .5 2.0 INPUT VOLTAGE [V] Fig.7 Spindle driver I/O characteristic (Ta=27℃,RL=2Ω+47µH) ●Power dissipation reduction Power dissipation : Pd (W) 2.0 1.0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE : Ta (℃) *70mm×70mm, t=1.6mm, occupied copper foil is less than 3%, glass epoxy mounting. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 17/18 2010.06 - Rev.A BD7959EFV ●Ordering part number Technical Note B D 7 Part No. 9 5 9 E F V - E 2 Part No. Package EFV: HTSSOP-B54 Packaging and forming specification E2: Embossed tape and reel HTSSOP-B54 18.5±0.1 (MAX 18.85 include BURR) (6.0) 54 28 Tape +6° 4° −4° Embossed carrier tape (with dry pack) 1500pcs E2 The direction is the 1pin of product is at the upper left when you hold Quantity Direction of feed 9.5±0.2 7.5±0.1 0.5±0.15 1 1PIN MARK 27 0.8 S 1.0MAX +0.05 0.17 -0.03 0.85±0.05 0.08±0.05 0.08 S 0.65 +0.05 0.22 -0.04 0.08 M 1.0±0.2 ( reel on the left hand and you pull out the tape on the right hand ) (5.0) 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 18/18 2010.06 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. R1010A