Serial interface controlled 9-ch motor driver with 3-beam laser diode driver


Product details


Motor driver channels 9 Integrated supply 3 laser diode drivers Operating supply (V) 5 Driver supply voltage (V) 12 Operating temperature range (C) -20 to 75 open-in-new Find other Optical disk drivers

Package | Pins | Size

HTSSOP (DFD) 56 113 mm² 14 x 8.1 open-in-new Find other Optical disk drivers


  • Serial Port Digital Interface
    • Serial Peripheral Interface (SPI)
    • 4-Wire Interface: SSZ, SCLK, SIMO, SOMI
    • Maximum Read/Write 35 MHz
    • 3.3-V Digital I/O
  • Actuator and Motor Driver
    • PWM Control With H-Bridge Output
    • Focus / Tracking / Tilt Actuator Driver With 12-Bit DAC Control
    • Sled Motor Drivers With Current Mode, 10-Bit DAC Control
    • Load Driver With 12-Bit DAC Control Selectable 5 V, 12 V
    • Stepping Motor Driver With 8-Bit PWM Control
  • Spindle Motor Driver
    • Low Rdson 0.3-Ω Typical MOSFET Output
    • Sensor-Less: Rotor Position Sense by Motor BEMF
    • Applicable for 10500 rpm Revolution Speed (Assumed in Using 12-Pole Motor)
    • 12-Bit Spindle DAC Programmed Via Serial Port
    • Self-Contained Inductive Position Sense and Startup
    • Auto-Brake Function Which Selects the Optimal Brake Mode in Each Rotation Speed
    • 1.5-A Maximum Continuous Current Excluding Thermal Issues
  • Utility Functions
    • Status Latch: Act Timer, SIF Error, PWR Monitor, Thermal Protection, and OCP Error
    • On-Chip Thermometer (15 to 165°C)
  • 3-Beam Laser Diode Driver
    • 120-mA Current Output With 11-Bit DAC Register or Analog Input (VLDDIN)
    • Slope-Controlled Current for Rapid Change
    • Select Output Port of CD, DVD, BD by Serial Bit
  • Protection
    • Individual Thermal Protect Circuit on SPM and Actuator Driver
    • Two Alert Levels: Pre-Detect and Detect in Thermal Protection
    • ACTTEMP: Monitor the Actuator Temperature Calculated from Integrating the DAC Value Set Up in the Past
    • Short-Circuit Protection in SPM, Sled, Load, Actuator, and Step-Driver Channel
    • Hardware Device Disable Pin, XRSTIN
    • Power Monitor by Undervoltage Lockout (UVLO) and Overvoltage Protection (OVP)
    • Tray-Lock Detection
    • PREOVP-12V: Prevent the 12-V OVP Detection by the Motor BEMF at SPM Brake

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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.

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.

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Technical documentation

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Type Title Date
* Data sheet TPIC2050 Serial I/F Controlled 9-Channel Motor-Driver With 3-Beam Laser Diode Driver datasheet Aug. 10, 2015
Technical article The story of motor-drive integration Jan. 09, 2017
Technical article How to create a dynamic power solution for stepper motors, relays and LEDs Nov. 01, 2016
Technical article How to avoid motor and system overvoltage using AVS technology without external components Oct. 14, 2016
Technical article How motor drivers aid in an automobile’s “limp-home” mode Oct. 06, 2016

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