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Texas Instruments TPS922054DMTR
- Part No.:
- TPS922054DMTR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 14-VDFN Exposed Pad
- Datasheet:
-
TPS922054DMTR.pdf
- Description:
- 65-V, 4-A BUCK LED DRIVER WITH I
- Quantity:
- Payment:
- Shipping:
Inventory:2,584
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Product details
Overview
TPS922054DMTR from Texas Instruments is a 65V, 6A 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 TPS922054DMTR datasheet, TPS922054DMTR pinout, TPS922054DMTR application, or TPS922054DMTR equivalent, this page delivers verified electrical specs, VSON-14 package mapping, thermal foldback configuration, fault signaling behavior, and dimming mode selection logic - all confirmed for the exact TPS922054DMTR variant.
Technical Context
The TPS922054DMTR implements adaptive off-time current-mode control with configurable switching frequency (100kHz–2.2MHz via FSET resistor) and supports common-anode LED topology with single-layer PCB compatibility. Its IFD architecture enables high-accuracy dimming by combining smart sampling with real-time peak-current feedback at CSP/CSN.
It integrates full-system protection: cycle-by-cycle current limiting (6A typical), LED open/short detection (via UVP), thermal foldback (configurable via TEMP pin), and open-drain FAULT signaling. Spread spectrum is disabled per device specification, optimizing brightness stability in low-duty-cycle operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 63V - supports wide-range industrial and automotive input rails without external pre-regulation. |
| Max Output Current | 6A typical - determined by internal 150mΩ MOSFET and cycle-by-cycle current limit; enables high-power LED strings or fast battery charging. |
| Switching Frequency | 100kHz to 2.2MHz - set externally via FSET resistor; higher frequencies reduce inductor size, lower frequencies improve efficiency and thermal performance. |
| Dimming Resolution | 2,000:1 at 20kHz PWM, 10,000:1 at 4kHz PWM - achieved via hybrid dimming; enables precise low-brightness control in machine vision and medical lighting. |
| Current Sense Threshold | 200mV ±3mV - fixed internal reference; sets LED current accuracy via external RSENSE; supports <1% output current tolerance with precision resistor. |
| Thermal Shutdown | 165°C with 15°C hysteresis - protects against sustained overload; combined with configurable thermal foldback (via TEMP pin) for graceful derating. |
| Package | VSON-14 (4.5mm × 3.0mm) - thermally enhanced exposed-pad package; RθJA = 39.1°C/W enables >3W continuous power dissipation with standard PCB copper. |
Pinout & Package
VSON-14 package with 4.5mm × 3.0mm body and exposed thermal pad (connected to PGND/AGND). Pin 1 is CSP; pin 14 is SW; thermal pad must be soldered for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND / AGND | Power & analog ground | Separate ground pins minimize noise coupling; thermal pad ties to both for optimal heat transfer and signal reference stability. |
| VIN | Main power input | Accepts 4.5–63V; powers internal LDO (VCC) and switching FET; requires local 10µF ceramic + bulk capacitor. |
| VCC | Internal LDO output | 5.15V ±0.15V regulated supply for internal circuitry; requires 1µF capacitor to AGND for soft-start timing and stability. |
| EN/PWM | Enable or PWM input | Pull high for continuous operation; accept 150ns minimum PWM pulses for direct dimming; low disables device with 2.3µA shutdown current. |
| ADIM/HD | Analog dimming / hybrid select | Pull low for hybrid dimming; apply PWM for analog dimming; high enables pure PWM mode - determines dimming architecture at startup. |
| FAULT | Open-drain fault indicator | Asserts low on LED open/short, thermal shutdown, or FET fault; requires external pull-up; enables system-level fault logging and safety interlock. |
| TEMP | Thermal foldback control | Connect resistor to AGND to set foldback curve (e.g., 20kΩ → 130°C start); direct AGND connection disables foldback. |
| FSET | Frequency programming | Resistor to AGND sets switching frequency (e.g., 59kΩ → 400kHz); critical for EMI compliance and inductor selection. |
| COMP | Error amplifier output | Connect RC network to AGND to set loop bandwidth and phase margin; directly affects transient response and dimming stability. |
| CSP / CSN | High-side current sense inputs | Differential pair measuring voltage across external RSENSE; 200mV threshold enables accurate constant-current regulation independent of VIN/VOUT. |
| SW | Switching node | Drives external inductor; connects internally to low-side FET; requires tight layout with Schottky catch diode or synchronous rectifier. |
| UVP | LED open detection | Resistor divider from CSP to AGND sets LED open threshold; floating disables open-circuit protection. |
Key Features
| Feature | Design Value |
|---|---|
| Inductive Fast Dimming (IFD) | Enables sub-microsecond dimming transitions using adaptive off-time control and real-time current sampling - critical for strobe and machine vision timing accuracy. |
| Hybrid Dimming Architecture | Combines analog dimming (12.5–100% duty) with PWM dimming (0–12.5%) to achieve 10,000:1 ratio at 4kHz - eliminates flicker while maintaining linearity at low brightness. |
| Configurable Thermal Foldback | Adjustable via single resistor on TEMP pin - allows custom derating curves matching heatsink design and ambient conditions without firmware changes. |
| Integrated 6A Low-Side FET | 150mΩ RDS(on) at 25°C - eliminates external switch, reduces BOM count, and enables compact 2-layer PCB layouts for cost-sensitive lighting modules. |
| Full Fault Protection Suite | Detects LED open/short, sense resistor failure, thermal events, and FET faults - FAULT pin provides immediate system-level alert without polling or software overhead. |
Applications
| Machine Vision Illumination | Medical Surgical Lighting |
|---|---|
Use Scenario: High-speed camera synchronization requiring microsecond-level LED turn-on/turn-off with zero residual glow. IC Role / Device Role / Timing Role: Constant-current LED driver with 150ns PWM pulse support and inductive fast dimming for precise strobe timing. Use Value: Eliminates motion blur in automated inspection systems by enabling <1µs optical rise/fall times under full load. |
Use Scenario: Adjustable-intensity surgical headlight with flicker-free dimming down to 0.01% brightness and color stability. IC Role / Device Role / Timing Role: Dual-mode CC/CV controller supporting analog + hybrid dimming for smooth, silent, and calibrated light output. Use Value: Achieves 10,000:1 dimming range at 4kHz without audible noise or spectral shift - meets IEC 60601-2-57 clinical requirements. |
| Industrial Fire Alarm Strobes | LCD Backlight Power Supply |
Use Scenario: High-luminance emergency strobes operating from 24VDC industrial bus with thermal derating in enclosed enclosures. IC Role / Device Role / Timing Role: Robust buck LED driver with thermal foldback, open-drain FAULT signaling, and 6A peak current capability. Use Value: Maintains certified flash intensity over temperature via programmable foldback - avoids false alarms caused by thermal throttling. |
Use Scenario: Energy-efficient LCD backlight for industrial HMIs requiring stable current across varying panel temperatures and input voltages. IC Role / Device Role / Timing Role: CC regulator with 200mV current sense reference and adaptive off-time control for high PSRR and low ripple. Use Value: Delivers <±1.5% LED current variation from –40°C to 85°C ambient - ensures consistent display luminance without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS922054DRRR | Same 6A current limit and disabled spread spectrum, but in WSON-12 (3.0mm × 3.0mm) package with higher RθJA (47.4°C/W). | Better suited for space-constrained designs where thermal pad area is limited; requires tighter thermal layout due to reduced copper exposure. | Select when board area is prioritized over thermal performance and 12-pin footprint aligns with existing layout. |
| TPS922052DMTR | 3A current limit, same VSON-14 package, disabled spread spectrum - shares identical pinout and control interface but halved output capability. | Targeted at lower-power LED arrays (<15W) or dual-channel implementations where 6A is excessive and cost reduction is critical. | Choose for cost-sensitive, lower-current lighting where full 6A headroom is unnecessary and shared firmware/drivers simplify qualification. |
Compared with TPS922054DMTR, TPS922054DRRR offers smaller footprint but higher thermal resistance, while TPS922052DMTR reduces current capability by 50% with identical control logic - enabling scalable design reuse across power tiers without re-spinning PCBs.
Availability
TPS922054DMTR is available at Aetrix Electronics and suitable for machine vision illumination, medical surgical lighting, industrial fire alarm strobes, and LCD backlight power supply requiring stable component supply across production lifecycles.
Supply support for TPS922054DMTR 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 ICs, with decades of expertise in high-reliability LED driver design.
The TPS92205x product line was engineered for high-power, high-precision LED lighting and multi-function CC/CV applications - emphasizing inductive fast dimming, thermal resilience, and flexible dimming architecture for industrial and medical use cases.
FAQ
What dimming modes does the TPS922054DMTR support, and how are they selected?
The TPS922054DMTR supports four dimming modes: PWM, analog, hybrid, and flexible. Selection occurs at startup based on logic states applied to EN/PWM and ADIM/HD pins within 1ms after UVLO exit. For example, pulling ADIM/HD low and applying PWM to EN/PWM configures hybrid dimming - enabling 10,000:1 range at 4kHz. All modes are implemented in hardware with no firmware dependency, ensuring deterministic timing for TPS922054DMTR-based systems.
Does the TPS922054DMTR include spread spectrum modulation, and why is it disabled?
No, the TPS922054DMTR has spread spectrum disabled per its device specification - unlike TPS922055DMTR. This omission prioritizes brightness stability and minimal low-frequency ripple in dimmed states, especially critical for medical and machine vision applications where EMI robustness is secondary to optical fidelity. The TPS922054DMTR achieves EMI compliance through optimized layout and external filtering instead of frequency dithering.
How is thermal foldback configured on the TPS922054DMTR, and what is its impact on operation?
Thermal foldback on the TPS922054DMTR is configured via a resistor between the TEMP pin and AGND - e.g., a 20kΩ resistor sets foldback onset at 130°C. As junction temperature rises, the device progressively reduces LED current to maintain safe operating temperature without abrupt shutdown. This enables graceful derating in enclosed fixtures or high-ambient environments, preserving system uptime while protecting the TPS922054DMTR and connected LEDs from thermal stress.
What is the role of the UVP pin on the TPS922054DMTR, and how is it used?
The UVP pin on the TPS922054DMTR configures LED open-circuit detection thresholds using an external resistor divider from CSP to AGND. When the voltage across the sense resistor drops below the programmed threshold (indicating no LED current flow), the device asserts the FAULT pin and disables switching. Leaving UVP floating disables open-circuit protection - allowing the TPS922054DMTR to operate in CV mode for battery charging applications where open-load behavior is expected.
Can the TPS922054DMTR be used for battery charging, and what design considerations apply?
Yes, the TPS922054DMTR supports CC/CV charging mode and is explicitly qualified for battery charging applications. In CV mode, it regulates output voltage using the same error amplifier and COMP network as in CC mode - requiring appropriate feedback resistors on the output. Key considerations include disabling UVP (by floating the pin), configuring FAULT handling for overvoltage events, and verifying thermal performance under constant-current charge phases where power dissipation peaks.
TPS922054DMTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-VDFN 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, Wettable Flank
- Supplier Device Package:
- 14-VSON (4.5x3)
TPS922054DMTR FAQ
1.How can I place an order for TPS922054DMTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS922054DMTR 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 TPS922054DMTR reliable?
The price and inventory of TPS922054DMTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS922054DMTR is usually 5 days.
3.What payment methods are accepted for TPS922054DMTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS922054DMTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS922054DMTR?
TPS922054DMTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS922054DMTR 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 TPS922054DMTR?
For technical support, including TPS922054DMTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS922054DMTR requirements.
6.How does Aetrix verify that TPS922054DMTR is sourced from the original manufacturer or authorized distributors?
All TPS922054DMTR 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 TPS922054DMTR meets industry standards.
7.What is the process for return or replacement of TPS922054DMTR?
All TPS922054DMTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS922054DMTR, 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 TPS922054DMTR part is unused and in its original packaging.
Return procedure for TPS922054DMTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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