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Texas Instruments TPS922054DRRR
- Part No.:
- TPS922054DRRR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
TPS922054DRRR.pdf
- Description:
- 65-V, 4-A BUCK LED DRIVER WITH I
- Quantity:
- Payment:
- Shipping:
Inventory:2,514
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Product details
Overview
TPS922054DRRR from Texas Instruments is a 65V, 4A non-synchronous buck LED driver with integrated 150mΩ low-side NMOS FET, supporting inductive fast dimming (IFD), analog/PWM/hybrid/flexible dimming modes, and CC/CV operation for LED lighting and battery charging applications.
For engineers reviewing the TPS922054DRRR datasheet, TPS922054DRRR pinout, TPS922054DRRR application, or TPS922054DRRR equivalent, this device delivers 6A cycle-by-cycle current limit, 100kHz–2.2MHz programmable switching frequency, 150ns minimum PWM pulse width, 200mV current sense threshold, and thermal foldback with configurable curve - all in a thermally enhanced WSON-12 package.
Technical Context
The TPS922054DRRR implements adaptive off-time current mode control with smart sampling to enable inductive fast dimming (IFD), achieving high dimming accuracy across hybrid and flexible dimming schemes. Its error amplifier transconductance (265μA/V typical) and ±40μA COMP pin sourcing/sinking capability support stable loop compensation with external RC networks.
It integrates a 150mΩ NMOS switch rated for 6A cycle-by-cycle current limit, operates from 4.5V–63V input, and features dual ground pins (PGND/AGND), separate CSP/CSN current sense inputs, and dedicated FSET (frequency set), TEMP (thermal foldback), and UVP (LED open detection) configuration pins - enabling precise system-level control without external controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports wide-range industrial, automotive, and mains-derived supplies without pre-regulation |
| Output Current Capability | 4A continuous LED drive - enables high-brightness single-string or multi-LED arrays up to 63V output |
| Current Limit | 6A typical cycle-by-cycle - provides robust overcurrent protection during startup, short-circuit, or transient overload |
| Switching Frequency | 100kHz to 2.2MHz - adjustable via FSET resistor; higher frequencies allow smaller magnetics and faster transient response |
| Dimming Pulse Width | 150ns minimum - enables ultra-fast PWM dimming for machine vision strobes and camera flash |
| Current Sense Threshold | 200mV ±6mV - sets LED current with high accuracy using external RSENSE; enables <1% current regulation error |
| Junction Temperature Range | –40°C to +125°C - qualified for industrial and outdoor lighting environments with full parameter performance |
Pinout & Package
TPS922054DRRR uses a thermally optimized 12-pin WSON package (3.0mm × 3.0mm, 0.5mm pitch) with exposed thermal pad connected to PGND/AGND for efficient heat dissipation in high-power LED drivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switching node | Connects to inductor and Schottky diode; carries high dv/dt and peak currents - requires tight layout and Kelvin sensing |
| CSP / CSN | Current sense inputs | Differential pair measuring voltage across external RSENSE; enables accurate constant-current regulation at 200mV reference |
| VIN | Main power input | Accepts 4.5–63V; powers internal LDO and high-side gate drive circuitry - requires local 10μF ceramic input capacitance |
| VCC | LDO output | 5.15V regulated supply for internal logic; requires 1μF capacitor to AGND for soft-start timing and stability |
| EN/PWM | Enable & PWM input | Active-high enable; accepts 150ns minimum PWM pulses for direct brightness control in PWM dimming mode |
| ADIM/HD | Analog dimming / hybrid select | Configures dimming method: high = PWM only, low = hybrid, PWM signal = analog/flexible - determines IFD behavior |
| FAULT | Open-drain fault indicator | Pulled low on LED open/short, thermal shutdown, or FET fault - enables system-level fault logging without polling |
| FSET | Frequency set input | Resistor-to-AGND sets switching frequency from 100kHz–2.2MHz; enables EMI optimization and magnetics size reduction |
| TEMP | Thermal foldback control | Resistor-to-AGND configures thermal foldback curve; allows gradual current reduction before shutdown at 130°C |
| UVP | LED open detection | Resistor divider sets LED open threshold; enables fail-safe detection of broken LED strings without external comparators |
| COMP | Error amplifier output | Connects to external RC network; sets loop bandwidth and phase margin for stable current regulation under load transients |
| PGND / AGND | Power & analog grounds | Separate ground pins minimize noise coupling; thermal pad ties both to PCB copper for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables sub-microsecond LED current transitions using adaptive off-time control - critical for machine vision strobes and medical imaging |
| Hybrid Dimming (2,000:1 @ 20kHz) | Combines analog dimming (high-brightness linearity) and PWM dimming (low-brightness resolution) - achieves wide dynamic range without flicker |
| CC/CV Dual-Mode Operation | Supports constant-current LED driving and constant-voltage battery charging or TEC control from same IC - reduces BOM count in multi-function systems |
| Configurable Thermal Foldback | Adjustable thermal derating curve via TEMP pin resistor - preserves light output while preventing thermal runaway in enclosed fixtures |
| Full System Protection Suite | Includes LED open/short, FET open/short, sense resistor fault, cycle-by-cycle current limit, and thermal shutdown - eliminates need for external monitoring circuits |
Applications
| Machine Vision Strobe | Medical Surgical Lighting |
|---|---|
Use Scenario: High-speed synchronized illumination for industrial inspection cameras capturing motion at >10k fps. IC Role / Device Role / Timing Role: TPS922054DRRR acts as a precision current source delivering 4A pulses with 150ns edge fidelity and <1µs settling time. Use Value: Enables reliable capture of fast-moving objects without motion blur, leveraging IFD and 150ns PWM capability. |
Use Scenario: Adjustable-intensity surgical headlamps requiring flicker-free, color-stable illumination across 0.01%–100% brightness range. IC Role / Device Role / Timing Role: TPS922054DRRR serves as the primary LED driver implementing hybrid dimming with 10,000:1 ratio at 4kHz PWM. Use Value: Delivers clinically acceptable dimming smoothness and zero perceptible flicker, meeting IEC 62471 photobiological safety requirements. |
| Outdoor Streetlighting | LCD Backlighting |
Use Scenario: Smart streetlights operating from 48V DC or rectified AC with adaptive dimming based on ambient light and occupancy. IC Role / Device Role / Timing Role: TPS922054DRRR functions as a rugged, thermally managed LED driver supporting 65V input and –40°C to +125°C junction operation. Use Value: Ensures long-term reliability in uncontrolled environments with integrated thermal foldback and wide-input operation. |
Use Scenario: High-efficiency, low-noise backlight for commercial displays requiring precise luminance control and EMI compliance. IC Role / Device Role / Timing Role: TPS922054DRRR operates in CC mode driving parallel LED strings, with spread-spectrum disabled (per TPS922054 spec) for optimal brightness stability. Use Value: Achieves >92% efficiency at 4A/24V and meets CISPR-25 Class 5 radiated emissions limits via programmable 2.2MHz switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS922054DMTR | VSON-14 package (4.5mm × 3.0mm); identical electrical specs and 6A current limit; no spread spectrum | Better thermal performance (RθJA = 39.1°C/W vs. 47.4°C/W) but larger footprint - preferred for high-power density designs with heatsinking | Select when board space allows larger package and thermal resistance is critical; pinout differs - not drop-in compatible |
| TPS922055DRRR | Same WSON-12 package and pinout; adds spread spectrum (±7%, 2kHz modulation) for improved EMI performance | Trade-off between EMI reduction and slight brightness variation at low dimming levels - unsuitable where absolute brightness stability is required | Select when radiated emissions compliance is prioritized over pixel-perfect dimming consistency in display applications |
Compared with TPS922054DRRR, TPS922054DMTR offers lower thermal resistance in a larger VSON package, while TPS922055DRRR adds spread spectrum at the cost of minor brightness ripple - both require layout changes and firmware validation for replacement.
Availability
TPS922054DRRR is available at Aetrix Electronics and suitable for machine vision strobes, medical surgical lighting, outdoor streetlighting, LCD backlighting, and battery charging systems requiring stable component supply and long lifecycle support.
Supply support for TPS922054DRRR 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in LED driver innovation and automotive-grade reliability.
The TPS92205x product line was designed specifically for high-performance, high-reliability LED lighting and dual-mode (CC/CV) power conversion in industrial, medical, and automotive applications - emphasizing thermal robustness, dimming fidelity, and system-level integration.
FAQ
What dimming modes does the TPS922054DRRR support?
The TPS922054DRRR supports four distinct dimming modes: PWM dimming (150ns minimum pulse width), analog dimming (256:1 range), hybrid dimming (2,000:1 at 20kHz, 10,000:1 at 4kHz), and flexible dimming (1,000,000:1 at 120Hz). Mode selection is determined by logic states on the EN/PWM and ADIM/HD pins at startup, as defined in Table 7-2 of the datasheet. Each mode leverages the device's adaptive off-time current mode control to maintain high dimming accuracy without external compensation.
Does the TPS922054DRRR include spread spectrum modulation?
No, the TPS922054DRRR does not include spread spectrum modulation. According to the Device Comparison Table, spread spectrum is enabled only on TPS922053 and TPS922055 variants; TPS922054DRRR has it disabled to ensure superior brightness stability in low-dimming scenarios such as medical and display applications. This design choice avoids modulation-induced luminance variation while maintaining full EMI compliance through programmable 2.2MHz switching.
What is the maximum current limit of the TPS922054DRRR?
The TPS922054DRRR has a typical cycle-by-cycle current limit of 6A, as confirmed in the Device Comparison Table and Electrical Characteristics section (ILIM = 5.2–7A). This limit applies to the integrated 150mΩ low-side NMOS FET and is active during startup, short-circuit, and transient overload conditions. The actual sustained output current depends on thermal design and input/output conditions - up to 4A continuous is specified under recommended operating conditions with proper PCB thermal management.
How is thermal protection implemented in the TPS922054DRRR?
The TPS922054DRRR implements two-tiered thermal protection: configurable thermal foldback (starting at 130°C, set via TEMP pin resistor) and hard thermal shutdown at 165°C with 15°C hysteresis. Unlike fixed-threshold devices, the foldback curve can be adjusted to gradually reduce LED current before shutdown - preserving light output while preventing damage. Both protections are fully integrated and require no external components, with fault status reported via the open-drain FAULT pin.
Can the TPS922054DRRR be used for battery charging applications?
Yes, the TPS922054DRRR supports CC/CV charging mode and is explicitly listed in the Applications section for battery charging. Its constant-voltage regulation uses the same feedback architecture as LED current control, with VREF = 200mV applied to the CSP–CSN differential input. By configuring external resistive dividers on the UVP pin and adjusting COMP network parameters, the device regulates output voltage while maintaining overvoltage, overcurrent, and thermal protections - making it suitable for Li-ion, lead-acid, and supercapacitor charging systems.
TPS922054DRRR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 63V
- Voltage - Output:
- 0V ~ 63V
- Current - Output / Channel:
- 4A
- Frequency:
- 100kHz ~ 2.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WSON (3x3)
TPS922054DRRR FAQ
1.How can I place an order for TPS922054DRRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS922054DRRR 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 TPS922054DRRR reliable?
The price and inventory of TPS922054DRRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS922054DRRR is usually 5 days.
3.What payment methods are accepted for TPS922054DRRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS922054DRRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS922054DRRR?
TPS922054DRRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS922054DRRR 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 TPS922054DRRR?
For technical support, including TPS922054DRRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS922054DRRR requirements.
6.How does Aetrix verify that TPS922054DRRR is sourced from the original manufacturer or authorized distributors?
All TPS922054DRRR 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 TPS922054DRRR meets industry standards.
7.What is the process for return or replacement of TPS922054DRRR?
All TPS922054DRRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS922054DRRR, 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 TPS922054DRRR part is unused and in its original packaging.
Return procedure for TPS922054DRRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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