My Inquiry
My Account
Texas Instruments TPIC2050RDFDRG4
- Part No.:
- TPIC2050RDFDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 56-PowerTSSOP (0.240", 6.10mm Width)
- Datasheet:
-
TPIC2050RDFDRG4.pdf
- Description:
- IC MTRDRV 3.3/5/9.5/12V 56HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,572
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPIC2050RDFDRG4 from Texas Instruments is a 9-channel serial-interface motor driver IC optimized for optical disc drives (Blu-ray, DVD, CD), integrating spindle motor control (sensorless BEMF startup), 3-beam laser diode drivers (CD/DVD/BD), focus/tracking/tilt actuators, sled and load motors, and collimator stepping motors. It delivers 1.7-A spindle output current, 12-bit DAC resolution for actuator control, 11-bit LDD current control, and operates from 5-V, 12-V, and 9.5-V supplies.
For engineers reviewing the TPIC2050RDFDRG4 datasheet, TPIC2050RDFDRG4 pinout, TPIC2050RDFDRG4 application, or TPIC2050RDFDRG4 equivalent, key selection criteria include sensorless spindle commutation, integrated thermal monitoring (on-chip thermometer), SPI interface timing (35 MHz max), multi-rail power domain management (P5V/P12V/A9P5V), and per-channel protection (OCP, SCP, OVP, TSD).
Technical Context
The TPIC2050RDFDRG4 implements a fully integrated motor drive subsystem with five independent functional blocks: a sensorless 3-phase spindle driver using BEMF detection for rotor position, four dual-H-bridge actuator channels (focus, tracking, tilt, load) with 12-bit DAC-controlled PWM, two stepping motor drivers (STP1/STP2) with 8-bit resolution and overcurrent protection, three independent laser diode drivers (ILDD_CD/ILDD_DVD/ILDD_BD) supporting analog or digital current setting, and a dedicated sled motor driver with 10-bit DAC control and end-detection logic.
Its architecture features a unified SPI interface (SSZ/SCLK/SIMO/SOMI) operating at up to 35 MHz, internal charge pump generating ~18.5 V for high-side gate drive, integrated current-sense circuitry (ISENSE, ICOM1/ICOM2), and hardware-level protections including pre-detect/detect thermal thresholds (135–165°C), dual-level OVP (5.8–6.4 V for 5-V rails; 13.9–15.6 V for 12-V rails), and short-circuit detection with sub-2 µs response on all motor channels except LDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Spindle Output Current | 1.7 A typical continuous (U/V/W phases); enables direct drive of 10500 rpm 12-pole ODD spindle motors without external current amplification |
| LDD Current Range | 0–247 mA (BD mode, IUP=11); supports full-range Blu-ray laser diode biasing with 11-bit digital control or 0–3 V analog input (VLDDIN) |
| SPI Clock Frequency | Up to 35 MHz; allows rapid register access for real-time actuator positioning and dynamic current scaling in servo loops |
| Thermal Monitoring | On-chip thermometer with 6-bit resolution (8–175°C range); provides direct die temperature feedback for closed-loop thermal derating |
| OVP Thresholds | P5V: 6.2 V detect / 6.0 V release; P12V: 14.9 V detect / 13.9 V release; prevents catastrophic failure during supply transients |
| Actuator DAC Resolution | 12-bit (4096 steps); delivers <±30 mV offset and ±0.7 Ω channel resistance for precise focus/tracking/tilt positioning control |
| Stepping Motor OCP | 850 mA typical trip level with 25 ms auto-release; protects STP1/STP2 outputs during lens collimator stall or mechanical jam |
Pinout & Package
TPIC2050RDFDRG4 is housed in a 56-pin HTSSOP package (6.10 mm × 14.00 mm) with exposed thermal pad. Pin functions are validated per TI SLIS167 datasheet Rev. AUGUST 2015.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SLED1_P / SLED1_N | Sled motor H-bridge outputs | Drive bidirectional current through sled coil; support 10-bit DAC-controlled positioning and end-detection via BEMF sensing |
| U / V / W | Spindle motor phase outputs | 3-phase PWM outputs with integrated BEMF sensing; require MCOM connection to motor center tap for sensorless commutation |
| FCS_P / FCS_N / TRK_P / TRK_N / TLT_P / TLT_N | Focus/Tracking/Tilt actuator H-bridges | 12-bit DAC-controlled bipolar drive; enable neutral-zone-free positioning for optical head servo systems |
| ILDD_CD / ILDD_DVD / ILDD_BD | Laser diode current outputs | Current-source outputs with slope control; selectable per-media type (CD/DVD/BD) via LDD_MSEL bits |
| SSZ / SCLK / SIMO / SOMI | SPI interface signals | 4-wire serial interface with 3.3-V logic levels; supports daisy-chain configuration and status register readback |
| XRSTIN | Hardware disable input | Active-low asynchronous reset; forces all driver outputs to Hi-Z state independent of SPI command execution |
| ISENSE / ICOM1 / ICOM2 | Spindle current sense inputs | Enable internal current limiting and BEMF detection without external shunt resistors; reduce BOM count and layout area |
Key Features
| Feature | Design Value |
|---|---|
| Sensorless Spindle Commutation | Uses motor back-EMF for rotor position detection-eliminates Hall sensors and reduces system cost and complexity |
| Integrated Thermal Protection | Two-stage thermal shutdown (pre-detect at 135°C, detect at 150°C) with 5–25°C hysteresis prevents thermal runaway in compact ODD enclosures |
| Multi-Rail Power Management | Dedicated pins for P5V, P12V, A9P5V, and P5V12L allow independent supply sequencing and fault isolation across motor, laser, and logic domains |
| Tray Lock Detection | Configurable threshold (80–460 mA) on P5V12L pin enables reliable mechanical tray-in detection without external comparators |
| Per-Channel Short-Circuit Protection | Sub-2 µs response on SPM, sled, load, and actuator channels detects wiring faults or motor shorts before MOSFET destruction |
| On-Chip Charge Pump | Generates ~18.5 V from 12-V rail to ensure robust high-side gate drive for low-RDS(on) (0.3 Ω typical) output FETs |
Applications
| Optical Disc Drive Spindle Control | Triple-Beam Laser Diode Biasing |
|---|---|
|
Use Scenario: Driving 12-V, 10500 rpm spindle motor in Blu-ray disc players with silent startup and stable rotation under varying disc mass and temperature. IC Role / Device Role / Timing Role: Primary spindle motor controller using sensorless BEMF-based commutation and 12-bit DAC-programmed speed profile. Use Value: Eliminates need for Hall-effect sensors and external current sense resistors-reducing component count by ≥4 and enabling <25 dB acoustic noise operation. |
Use Scenario: Providing precision current bias to CD, DVD, and BD laser diodes within a single optical pickup unit (OPU). IC Role / Device Role / Timing Role: Triple independent current sources (ILDD_CD/ILDD_DVD/ILDD_BD) with media-selectable gain and slope-controlled turn-on/turn-off. Use Value: Enables seamless media switching with <243 µs LDD current transition time-preventing optical power overshoot and extending diode lifetime. |
| Focus/Tracking Actuator Servo | Collimator Lens Stepping Motor Control |
|
Use Scenario: Closed-loop positioning of objective lens for focus and radial tracking in high-speed BD-ROM drives. IC Role / Device Role / Timing Role: Dual 12-bit DAC-driven H-bridge (FCS/TRK) delivering bipolar force with <±30 mV offset and 0.7 Ω total channel resistance. Use Value: Achieves <±0.1 µm positioning accuracy and <100 ns response to servo error signals-critical for 6× BD write performance. |
Use Scenario: Driving dual-coil stepping motor to adjust collimator lens position during disc loading and format detection. IC Role / Device Role / Timing Role: Two 8-bit PWM-controlled H-bridges (STP1/STP2) with integrated 850 mA overcurrent protection and end-stop detection. Use Value: Prevents mechanical damage during lens travel limits; auto-releases after 25 ms OCP hold time-enabling robust "find home" routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPIC2040RDFDR | 8-channel variant (no STP2 output); identical spindle, sled, actuator, and LDD functionality; same HTSSOP-56 package | Lacks second stepping motor channel; suitable for single-lens OPU designs without collimator adjustment | Select when STP2 is unused-reduces software complexity and eliminates one unused H-bridge driver path |
| DRV8718SRTVT | 4-channel H-bridge gate driver (no integrated LDD or spindle logic); requires external MCU for BEMF processing and DAC control | Targeted at custom motor control platforms; lacks on-chip thermometer, OVP, and laser diode drivers | Choose for flexible, non-ODD-specific motor systems where full integration is unnecessary and external processing is available |
Compared with TPIC2050RDFDRG4, TPIC2040RDFDR offers identical core ODD functionality in a reduced channel count, while DRV8718SRTVT shifts responsibility for intelligence and protection to external components-increasing design effort but enabling broader motor topology support.
Availability
TPIC2050RDFDRG4 is available at Aetrix Electronics and suitable for optical disc drive manufacturing, Blu-ray player repair services, and embedded servo subsystem development requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPIC2050RDFDRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and digital signal processing technologies, with leadership in precision analog and motor control ICs.
The TPIC2050RDFDRG4 belongs to TI's Optical Storage Motor Driver product line, designed specifically for high-fidelity, low-noise, multi-function motor and laser control in consumer and professional optical disc drives.
FAQ
What is the maximum continuous spindle motor current supported by the TPIC2050RDFDRG4?
The TPIC2050RDFDRG4 supports 1.7 A typical continuous current per phase (U/V/W) under recommended operating conditions (TA ≤ 75°C, P12V = 12 V). Peak current capability is 2.5 A, with transient peaks up to 3.5 A permitted for ≤2 ms at ≤30% duty cycle-sufficient for 10500 rpm 12-pole spindle acceleration profiles.
Does the TPIC2050RDFDRG4 require external current sense resistors for spindle motor control?
No. The TPIC2050RDFDRG4 integrates internal current sensing via ICOM1, ICOM2, and ISENSE pins-enabling accurate motor current measurement and BEMF-based commutation without external shunts. This eliminates PCB space and BOM cost associated with precision resistors and differential amplifiers typically needed in discrete solutions.
How does the TPIC2050RDFDRG4 implement sensorless spindle motor startup?
The TPIC2050RDFDRG4 uses built-in BEMF detection circuitry tied to the U/V/W outputs and MCOM input. During startup, it applies open-loop PWM patterns while monitoring voltage across ICOM1/ICOM2 to detect rotor position-enabling self-starting without Hall sensors or encoder feedback. This is confirmed in Section 5 of the SLIS167 datasheet.
Can the TPIC2050RDFDRG4 drive both CD and BD laser diodes simultaneously?
Yes. The TPIC2050RDFDRG4 contains three independent laser diode drivers: ILDD_CD (for CD), ILDD_DVD (for DVD), and ILDD_BD (for BD). Each has dedicated current gain settings, selectable via LDD_MSEL bits, and can be enabled/disabled independently-allowing concurrent or sequential biasing based on disc format detection.
What thermal protection features are implemented in the TPIC2050RDFDRG4?
The TPIC2050RDFDRG4 includes an on-chip thermometer (6-bit resolution, 8–175°C range) and dual-threshold thermal shutdown: pre-detect at 135°C and full detect at 150°C, with 5–25°C hysteresis. It also provides individual thermal protection circuits for the spindle and actuator drivers, as documented in Section 8.3.1.3 of the SLIS167 datasheet.
TPIC2050RDFDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 56-PowerTSSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC), Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (19)
- Interface:
- SPI
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- Media Player
- Current - Output:
- 800mA, 1.7A
- Voltage - Supply:
- 3.3V, 5V, 9.5V, 12V
- Voltage - Load:
- 5V, 12V
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-HTSSOP
TPIC2050RDFDRG4 FAQ
1.How can I place an order for TPIC2050RDFDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPIC2050RDFDRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPIC2050RDFDRG4 reliable?
The price and inventory of TPIC2050RDFDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPIC2050RDFDRG4 is usually 5 days.
3.What payment methods are accepted for TPIC2050RDFDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPIC2050RDFDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPIC2050RDFDRG4?
TPIC2050RDFDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPIC2050RDFDRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPIC2050RDFDRG4?
For technical support, including TPIC2050RDFDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPIC2050RDFDRG4 requirements.
6.How does Aetrix verify that TPIC2050RDFDRG4 is sourced from the original manufacturer or authorized distributors?
All TPIC2050RDFDRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPIC2050RDFDRG4 meets industry standards.
7.What is the process for return or replacement of TPIC2050RDFDRG4?
All TPIC2050RDFDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPIC2050RDFDRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPIC2050RDFDRG4 part is unused and in its original packaging.
Return procedure for TPIC2050RDFDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPIC2050RDFDRG4 Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
