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 Symbol Ratings SPVM,SL/SAVM 15 Vcc,AVM 15 V DVcc 7 V CHG_C 15 V Pd 2.0 Operating temperature range Topr -20 ~ 75 ℃ Storage temperature Tstg -55 ~ 150 ℃ Tjmax 150 ℃ 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 Joint part temperature #1 #2 Unit #1 #2 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 Technical Note BD7959EFV ●Recommended operating conditions (Set the power supply voltage with consideration to power dissipation) Parameter Symbol Ratings Min. Typ. Max. Unit SPVM － Vcc #3 － V SL/SAVM － Vcc #3 － V Preblock / Loading driver power supply voltage Vcc 10.8 12 13.2 V Actuator driver power block power supply voltage AVM 4.3 5.0 5.5 V PWM control block power supply voltage DVcc 4.3 5.0 5.5 V Spindle driver output current Iosp － 1.2 2.5 #4 A Actuator, sled/SA motor, loading motor driver output current Ioo － 0.5 0.8 A Spindle driver powerblock power supply voltage Sled / SA motor driver powerblock power supply voltage #3 #4 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 Technical Note BD7959EFV ●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 IQ1 － 12 24 mA Vcc (Loading OFF) Quiescent current 2 IQ2 － 7 12 mA Vcc (Loading ON) Quiescent current 3 IQ3 － 7 12 mA DVcc Standby-on current 1 IST1 － － 0.5 mA Vcc Standby-on current 2 IST2 － － 1.0 mA DVcc Sled driver block Input dead zone (one side) VDZSL 0 20 80 mV gmSL 1.0 1.25 1.5 A/V Output On resistor (top and bottom) RONSL － 2.2 3.3 Ω Output limit current ILIMSL 0.84 1.2 1.56 A fosc － 100 － kHz Input output gain PWM frequency RIN1,2=62kΩ IL=500mA SA driver block Input dead zone (one side) Input output gain VDZSA 0 60 120 mV gmSA 0.141 0.17 0.199 A/V Output On resistor (top and bottom) RONSA － 2.2 3.3 Ω Output limit current ILIMSA 280 400 520 mA fosc － 100 － kHz VDZSP 0 10 40 mV PWM frequency RIN1=68kΩ, RIN2=75kΩ IL=200mA Spindle driver block Input dead zone (one side) Input output gain gmSP 0.91 1.15 1.39 A/V Output On resistor (top and bottom) RONSP － 1.5 2.6 Ω IL=500mA Output limit current ILIMSP 0.88 1.1 1.32 A SPRNF=0.33Ω fosc － 100 － kHz VOFFT -50 0 50 mV PWM frequency SPRNF=0.33Ω Actuator driver block Output offset voltage Output saturation voltage VOFT － 0.9 1.8 V Voltage gain GVFT 15.5 17.5 19.5 dB VOFLD -50 0 50 mV Output saturation voltage VOLD － 2.2 2.9 V Voltage gain GVLD 15.5 17.5 19.5 dB Input high voltage VCTLH 2.0 － 3.7 V Input low voltage VCTLL GND － 0.5 V VC drop-muting VMVC 0.4 0.7 1.0 V Vcc drop-muting VMVcc 3.4 3.8 4.2 V IL=500mA Loading driver block Output offset voltage IL=500mA CTL1,CTL2、PickCTL terminal Others *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 Technical Note BD7959EFV ●Block diagram Current LIMIT 1 HU- 2 HV+ 3 HV- 4 HW+ 5 54 SPIN HALL MATRIX HU+ 53 BTHC BOTTOM HOLD 52 SPVM 51 FG FG 40kΩ 50 SPCNF HW- 6 STBY/ BRAKE CONTROL 80kΩ 80kΩ 40kΩ Vcc 7 LDIN 8 80kΩ 80kΩ LDO- 9 105kΩ 25kΩ 105kΩ 25kΩ AGND 11 105kΩ 25kΩ TKO- 12 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 40kΩ 44 SPGND 43 SL/SAGND CURR.FEED 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ CURR.FEED FF PickCTL 19 ICTL 20 AVM 21 39 SLO1+ FF Pick-up pull CTL 38 SAO237 SAO2+ 36 SAO1- PRE Logic 25kΩ 40 SLO1- PRE Logic 105kΩ 41 SLO2+ PRE Logic CURR.FEED 42 SLO2- PRE Logic FF CURR. LIMIT FCO+ 18 FF CURR. LIMIT FCO- 17 FC CTL CHG_C 16 TL CTL TLO- 15 46 V 45 U TKO+ 13 TLO+ 14 48 CTL2 47 W PWM LDO+ 10 49 CTL1 35 SAO1+ CURR.FEED 34 N.C.(OPEN) LEVEL SHIFT FCIN 22 TLIN 23 LEVEL SHIFT TKIN 24 VC 25 LEVEL SHIFT DVcc 26 DGND 27 33 N.C.(pull-up to Vcc) 6kΩ 32 SLIN2 6kΩ 31 SLIN1 30 SL/SAVM 4.3kΩ 29 SAIN2 4.3kΩ 28 SAIN1 LEVEL SHIFT www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/18 2010.06 - Rev.A Technical Note BD7959EFV ●Pin description No. Symbol Description No. Symbol 1 Description HU+ Hall amp U positive input 28 SAIN1 SA driver 1 input 2 HU- Hall amp U negative input 29 SAIN2 SA driver 2 input 3 HV+ Hall amp V positive input 30 SL/SAVM 4 HV- Hall amp V negative input 31 SLIN1 Sled driver1 input 5 HW+ Hall amp W positive input 32 SLIN2 Sled driver2 input 6 HW- Hall amp W negative input 33 N.C. N.C. (pull-up to Vcc) 7 Vcc BTL pre and Loading power supply 34 N.C. N.C. (OPEN) 8 LDIN Loading driver input 35 SAO1+ SA driver1 positive output 9 LDO- Loading driver negative output 36 SAO1- SA driver1 negative output 10 LDO+ Loading driver positive output 37 SAO2+ SA driver2 positive output 11 AGND BTL driver block power ground 38 SAO2- SA driver1 negative output 12 TKO- Tracking driver negative output 39 SLO1+ Sled driver1 positive output 13 TKO+ Tracking driver positive output 40 SLO1- Sled driver1 negative output 14 TLO+ Tilt driver positive output 41 SLO2+ Sled driver2 positive output 15 TLO- Tilt driver negative output 42 SLO2- Sled driver2 negative output 16 CHG_C Pick-up pull charge capacitor terminal 43 SL/SAGND Sled/SA driver block pre and power ground 17 FCO- Focus driver negative output 44 SPGND Spindle driver power ground 18 FCO+ Focus driver positive output 45 U Spindle driver output U 19 Pick CTL Pick-up pull control terminal 46 V Spindle driver output V 20 ICTL Pick-up pull current control terminal 47 W Spindle driver output W 21 AVM Actuator driver block power supply 48 CTL2 Driver logic control 2 input 22 FCIN Focus driver input 49 CTL1 Driver logic control 1 input 23 TLIN Tilt driver input 50 SPCNF Spindle driver feedback filter 24 TKIN Tracking driver input 51 FG Frequency generator output 25 VC Reference voltage input 52 SPVM Spindle driver power supply 26 DVcc PWM block control power supply 53 BTHC Capacitor connection terminal for spindle current bottom holding 27 DGND Pre-ground 54 SPIN Spindle driver input Sled / SA driver pre and power supply *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 Technical Note BD7959EFV ●Equivalent-circuit diagram of the terminals Spindle Driver output Spindle driver current detection input Spindle driver error amplifier input pin 2kΩ 52 6kΩ 7pin 200kΩ 52 47 46 53 45 1.03kΩ 5kΩ 5kΩ 44 Hall signal input 26 pin 1 3 26 pin 4P 26 pin 26 pin 2 50kΩ 26 pin Spindle driver input 26 pin 26 pin 50kΩ 5 FG signal input 4 6 26 pin 200Ω 54 51 12kΩ 10kΩ 27 pin Spindle driver feedback filter pin PWM driver output(SLED1,2 SA1,2) 30 7 pin 7 pin PWM driver input(SLED1,2) 26 pin 26 pin 10kΩ 500Ω 50 500Ω 10kΩ 39 35 36 40 31 41 37 38 42 32 6kΩ 5kΩ 500Ω 5p 43 PWM driver input (SA1,2) 26 pin 28 26 pin 4.3kΩ 29 BTL driver output(FC,TK,TL) BTL driver output(LD) 21 7 13 12 14 15 18 17 10 9 6p 11 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 6/18 11 2010.06 - Rev.A Technical Note BD7959EFV BTL driver input(FC,TK,TL,LD) Driver logic control input (CTL1,2) 7 pin 8 200Ω 22 23 24 Pick-up pull control pin Pick-up pull current control pin 7 pin 7 pin 16 220kΩ 50kΩ 19 20 50kΩ Reference voltage input 7pin 26pin 26pin 26pin 50kΩ 25 200Ω 68kΩ 50kΩ 72.3kΩ 24kΩ 26pin (×4ch) (×2ch) (×2ch) 26pin 26pin 10kΩ 10kΩ 10kΩ (×2ch) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. (×2ch) 7/18 2010.06 - Rev.A Technical Note BD7959EFV ●Test circuit VSPIN Current LIMIT 40kΩ FF FF 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ CURR.FEED FF 25kΩ Pick-up pull CTL FF LEVEL SHIFT CURR.FEED 6kΩ 6kΩ LEVEL SHIFT OUT+ OUT V RL 47µH 4.3kΩ 4.3kΩ W RLSP 2 1 2 SW-RL 2 1 1 SW-IL IL IL 2-W www.rohm.com SP SL/SAVM VSAIN2 VSAIN1 2-U 8/18 47µH RLSP SW-RL RLSP 47µH 47µH 2-V 1 IL © 2010 ROHM Co., Ltd. All rights reserved. VSLIN1 V 1 1 SW-IL VSLIN2 OUTSP U Vo SW-RL 2 2 W 25kΩ CURR.FEED SLO2 105kΩ CTL2 + OUT 25kΩ CTL1 SLO1 105kΩ 0.01μF + OUT 25kΩ DVCC SAO2 25kΩ 105kΩ 100k + OUT 25kΩ 105kΩ VCC SP + OUT 105kΩ PRE Logic 25kΩ LEVEL SHIFT VC DVCC 25kΩ 105kΩ LEVEL SHIFT FC TKIN 105kΩ CURR.FEED - + OUT TLIN 25kΩ PRE Logic FC TL CTL CTL TL + OUT AVM FCIN 105kΩ PRE Logic TK - + OUT ICTL(=VCC) 80kΩ PRE Logic LD pickCTL 80kΩ 0.33 OUT V U 40kΩ - + OUT CHG_C(=VCC) STBY/BRAKE CONTROL 80kΩ VRNF SAO1 HALL MATRIX 80kΩ PWM LDIN FG 40kΩ CURR. LIMIT VCC BOTTOM HOLD CURR. LIMIT HW+ 470p 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 2 HV+ OUT- HU- HU+ 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 SW-IL 2010.06 - Rev.A Technical Note BD7959EFV ●Functional description 1. 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 Spindle Sled SA Focus Tracking Tilt Loading L L × × × × × × × ① H L × × × × × × ○ ② － H ○ ○ ○ ○ ○ ○ × ○:ON ×:OFF CTL1 CTL2 L H Forward-rotation mode Reverse-rotation braking mode ③ H H Forward-rotation mode Short-circuit braking mode ④ ① ② ③ ④ 2. CTL2 SPIN ＞ VC SPIN ＜ VC 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- 》 》 》 Vc 》 》 》 》 》 》 》 》 》 》 》 》 SPIN SOURCE U MID SINK SOURCE V MID SINK SOURCE W MID SINK ABCDEF J K L GHI Ⅱ）Reverse Ⅰ）Forward rotaion brake rotation mode www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/18 Ⅲ）Reversal prevention Ⅳ）Short brake 2010.06 - Rev.A Technical Note BD7959EFV 3. Pick-up lens pull function Pick CTL Function L ON ① H Normal (function:OFF) ② 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. PWM oscillation frequency The PWM oscillation for driving the spindle, sled and SA is free running. The oscillating frequency is 100kHz(typ.) 7. 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 Technical Note BD7959EFV 8. 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. 9. 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. 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<Typ> 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<Typ> 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 Technical Note BD7959EFV ●Notes for use 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 Technical Note BD7959EFV 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 + SPVM SPRNF 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 Transistor(NPN) Terminal-A Terminal-B C Terminal-B B E Terminal-A B P+ P+ P Parasitic element C E P+ P P + P-Substrate P-Substrate Surrounding elements Parasitic element GND Parasitic element GND Parasitic element 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 Technical Note BD7959EFV ●Application circuit HU+ HALL1 HV+ HALL2 HVHW+ HWVcc 12V LDIN LDIN M LDO+ AGND TKO- Tracking coil ICTL 12V 5V TLIN VC (1.65V) TKIN VC DVcc DGND 7 40kΩ 8 80kΩ 80kΩ 9 105kΩ 25kΩ 10 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 11 12 15 16 17 18 105kΩ 45 44 43 CURR.FEED FF FF CURR.FEED CURR.FEED 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ 105kΩ 25kΩ FF 19 20 21 FF Pick-up pull CTL 41 40 39 38 37 36 35 34 23 24 25 26 27 LEVEL SHIFT www.rohm.com 42 CURR.FEED 22 © 2010 ROHM Co., Ltd. All rights reserved. 48 46 13 14 49 47 LEVEL SHIFT 5V TLIN 80kΩ 40kΩ LEVEL SHIFT TKIN FCIN 80kΩ 6 LEVEL SHIFT FCIN AVM 50 PRE Logic PickCTL 5 CURR. LIMIT PickCTL FCO+ 51 PRE Logic FCOFocus coil FG 40kΩ TL FC CTL CTL CHG_C 12V 52 PRE Logic TLO- 4 CURR. LIMIT TLO+ Tilt coil 3 53 BOTTOM HOLD PRE Logic TKO+ 2 PWM LDO- 54 STBY/ BRAKE CONTROL HALL3 DVCC 1 HALL MATRIX HU- Current LIMIT 14/18 SPIN SPIN 470p BTHC 0.33Ω SPVM FG 12V 0.1µF SPCNF 0.01µF CTL1 CTL2 100k CTL2 W SP motor V U SPGND SL/SAGND SLO2SLO2+ SLO1STM SLO1+ SAO2SAO2+ SAO1- STM SAO1+ N.C.(OPEN) N.C. (pull-up to Vcc) 33 12V 6kΩ 6kΩ 32 31 30 4.3kΩ 4.3kΩ 29 28 SLIN2 SLIN1 62k SL/SAVM SAIN2 SAIN1 SLIN2 62k 75k 68k SLIN1 12V SAIN2 SAIN1 2010.06 - Rev.A Technical Note BD7959EFV ●Connecting wires of application board www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 15/18 2010.06 - Rev.A Technical Note BD7959EFV ●Pattern drawing of application board Silk screen on the surface Wiring pattern on the surface Silk screen on the back www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Wiring pattern on the back 16/18 2010.06 - Rev.A Technical Note BD7959EFV 6 6 4 4 4 2 0 -2 TLO(+)-TLO(-) [V] 6 TKO(+)-TKO(-) [V] FCO(+)-FCO(-) [V] ●Electrical characteristic curves 2 0 -2 -4 -4 -2 -1.5 -1 -0.5 0 0.5 1 1.5 -1.5 -1 INPUT VOLTAGE [V] 0 0.5 1 1.5 -2 2 Fig.2 Tracking driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) 3 50 1200 3 00 1000 4 800 0 600 -4 400 -8 200 -12 -0.5 0 0.5 1 1.5 2 0 0.5 1 1.5 2 2 50 2 00 1 50 1 00 0 -2 -1.5 -1 INPUT VOLTAGE [V] -0.5 0 0.5 1 1.5 2 -2 .0 INPUT VOLTAGE [V] Fig.4 Loading driver I/O characteristic (Ta=27℃,RL=12Ω+47µH) -0.5 50 0 -1 -1 Fig.3 Tilt driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) 1400 OUTPUT CURRENT [mA] 8 -1.5 -1.5 INPUT VOLTAGE [V] OUTPUT CURRENT [mA] 12 LDO(+)-LDO(-) [V] -0.5 INPUT VOLTAGE [V] Fig.1 Focus driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) -2 -2 -6 -2 2 0 -4 -6 -6 2 -1 .5 - 1.0 - 0.5 0.0 0.5 1.0 1 .5 2 .0 INPUT VOLTAGE [V] Fig.5 Sled driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) Fig.6 SA driver I/O characteristic (Ta=27℃,RL=8Ω+47µH) 48 0 VCC-BTHC [mV] 40 0 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 : Pd (W) ●Power dissipation reduction 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 Technical Note BD7959EFV ●Ordering part number B D 7 Part No. 9 5 9 Part No. E F V - Package EFV: HTSSOP-B54 E 2 Packaging and forming specification E2: Embossed tape and reel HTSSOP-B54 <Tape and Reel information> 18.5±0.1 (MAX 18.85 include BURR) +6° 4° −4° (6.0) 1PIN MARK 1.0±0.2 0.5±0.15 (5.0) 1 Embossed carrier tape (with dry pack) Quantity 1500pcs 28 7.5±0.1 9.5±0.2 54 Tape Direction of feed E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 27 +0.05 0.17 -0.03 0.8 0.08±0.05 1.0MAX 0.85±0.05 S 0.08 S 0.65 +0.05 0.22 -0.04 0.08 1pin M Reel (Unit : mm) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 18/18 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 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. 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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