TPIC2050 Datasheet, PDF (1/68 Pages) Texas Instruments – Serial I/F Controlled 9-Channel Motor-Driver

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TPIC2050
SLIS167 – AUGUST 2015
TPIC2050 Serial I/F Controlled 9-Channel Motor-Driver With 3-Beam Laser Diode Driver
1 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 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
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: Prevent the 12-V OVP
Detection by the Motor BEMF at SPM Brake
2 Applications
Optical Disc Drive (Blu-ray, DVD, CD)
3 Description
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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPIC2050
HTSSOP (56)
6.10 mm × 14.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
12 V
5V
3.3 V
9.5 V
TPIC2050
Motor Drive
Spindle
SPI
Controller
AnalogVDDDIN
Input for LDD
ILDO_BD
ILDO_DVD
ILDO_CD
Motor Drive
DAC PWM
Motor Drive
DAC PWM
Motor Drive
DAC PWM
LDD
Driver
LDD
Driver
LDD
Driver
Motor Drive
DAC PWM
Motor Drive
DAC PWM
Motor Drive
DAC PWM
ICOM
ISENSE
MCOM
U
V
W
SLED1+
SLED1±
SLED2+
SLED2±
TLT+
TLT±
FCS+
FCS±
TRK+
TRK±
P5V12L
TRK+
TRK±
STP1+
STP1±
STP2+
12 V
5V
STP2±
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.