TPIC2050
Key Features
- 1 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 12Bit 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 1 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: P
