Optical Disc Drive (Blu-ray, DVD, CD)
The TPIC2050 is low-noise-type motor driver IC suitable for 12-V ODD. The 9-channel driver, IC controlled by serial interface, is optimum for driving a spindle motor, sled motor (stepping motor applicable), load motor, focus / tracking / tilt actuators, and stepping motor for the collimator lens.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPIC2050 | HTSSOP (56) | 6.10 mm × 14.00 mm |
DATE | REVISION | NOTES |
---|---|---|
August 2015 | * | Initial release. |
The spindle motor driver part builds in the sensor-less logic that attains low-noise operation at start-up and while running. Motors or sensors, such as a Hall device, are not required by the starting circuit for self-starting, or for performing position detection by BEMF. As the output stage of all channels works in efficient PWM driving, low-power operation by PWM control is possible. Neutral zone-less control is possible for a focus / tracking / tilt actuator driver. In addition, the spindle part output current limiting circuit, thermal shutdown circuit, sled-end detection circuit, collimator lens end detection circuit, actuator protection, and three beam laser drivers are built in. The newly added built-in thermometer can measure IC temperature.
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
SLED1_P | 1 | OUT | Sled1 positive output terminal |
SLED1_N | 2 | OUT | Sled1 negative output terminal |
P12V_3 | 3 | PS | Power supply terminal for 12-V drivers output |
SLED2_P | 4 | OUT | Sled2 positive output terminal |
SLED2_N | 5 | OUT | Sled2 negative output terminal |
PGND_2 | 6 | PS | GND terminal for 12-V drivers |
C10V | 7 | MISC | Capacitance connection terminal for internal regulator |
CP1 | 8 | MISC | Capacitance connection for charge pump |
CP2 | 9 | MISC | Capacitance connection for charge pump |
CP3 | 10 | MISC | Capacitance connection for charge pump |
GPOUT | 11 | OUT | General-purpose output (test monitor) |
XFG | 12 | OUT | Motor speed signal output |
RDY | 13 | OUT | Device ready signal. Internally pulled up to SIOV |
SSZ | 14 | IN | SIO slave select low active input terminal |
SCLK | 15 | IN | SIO serial clock input terminal |
SIMO | 16 | IN | SIO slave input master output terminal |
SOMI | 17 | OUT | SIO slave output master input terminal |
SIOV | 18 | PS | Power-supply terminal for serial port. 3.3-V typical |
XRSTIN | 19 | IN | RESET input terminal to disable the driver IC |
TEST1 | 20 | MISC | Test pin. Should be open |
VLDDIN | 21 | IN | Laser diode control analog signal input 0 to 3-V terminal. Required to set register when using VLDDIN input. Open in case of non-use analog input. |
CV3P3 | 22 | MISC | Capacitance terminal for internal 3.3-V core (typical 0.1 µF) |
AGND/DGND | 23 | PS | Ground terminal for internal digital and analog |
A9P5V | 24 | PS | Power-supply terminal 9.5-V laser diode for BD |
ILDD_BD | 25 | OUT | Laser diode for BD output terminal |
ILDD_DVD | 26 | OUT | Laser diode for DVD output terminal |
ILDD_CD | 27 | OUT | Laser diode for CD output terminal |
CP5V | 28 | MISC | Capacitance connection terminal for control system power supply. Connect a ≥0.1-µF decoupling capacitor. |
LOAD_P | 29 | OUT | Load positive output terminal |
LOAD_N | 30 | OUT | Load negative output terminal |
P5V12L | 31 | PS | Power-supply terminal (5 or 12 V) for load driver output stages. |
TEST2 | 32 | MISC | Test pin. Should be open |
TEST3 | 33 | MISC | Test pin. Should be connected to P5V. |
P5V_1 | 34 | PS | Power-supply terminal for tilt/focus/tracking drivers |
TLT_N | 35 | OUT | Tilt negative output terminal |
TLT_P | 36 | OUT | Tilt positive output terminal |
TRK_P | 37 | OUT | Tracking positive output terminal |
TRK_N | 38 | OUT | Tracking negative output terminal |
FCS_P | 39 | OUT | Focus positive output terminal |
FCS_N | 40 | OUT | Focus negative output terminal |
PGND_1 | 41 | PS | GND terminal for tilt/focus/tracking channel drivers |
P12V_1 | 42 | PS | Power-supply terminal for 12-V driver output stage |
U | 43 | OUT | U-phase output terminal for spindle motor |
ICOM1 | 44 | MISC | Current sense resistor terminal for spindle driver |
V | 45 | OUT | V-phase output terminal for spindle motor |
P12V_2 | 46 | PS | Power-supply terminal for 12-V driver output stage |
W | 47 | OUT | W-phase output terminal for spindle motor |
ICOM2 | 48 | MISC | Current sense resistor terminal for spindle driver |
MCOM | 49 | IN | Motor center tap connection |
ISENSE | 50 | IN | Current sense input terminal for spindle drivers |
AGND | 51 | PS | Ground terminal for internal analog |
STP1_P | 52 | OUT | STP1 positive output terminal for collimator |
STP1_N | 53 | OUT | STP1 negative output terminal for collimator |
STP2_P | 54 | OUT | STP2 positive output terminal for collimator |
STP2_N | 55 | OUT | STP2 negative output terminal for collimator |
P5V_2 | 56 | PS | Power supply terminal for 5-V driver output |