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Texas Instruments TPS92380PWPR
- Part No.:
- TPS92380PWPR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS92380PWPR.pdf
- Description:
- IC LED DRVR RGLTR PWM 20HTSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS92380PWPR from Texas Instruments is a 3-channel, 120-mA LED backlight driver IC with integrated boost/SEPIC DC-DC converter, adaptive output voltage control, and 10,000:1 dimming ratio at 100 Hz - designed for industrial and consumer medium-size LCD panel backlighting requiring high current matching (1% typical) and fault-resilient operation up to 45 V output.
For engineers reviewing the TPS92380PWPR datasheet, TPS92380PWPR pinout, TPS92380PWPR application, or TPS92380PWPR equivalent, this page delivers verified technical context, real-world design meaning of key specs, HTSSOP-20 package layout, functional alternatives with documented differences, and supply-ready procurement support - all grounded in TI's SNVSBZ6 production datasheet.
Technical Context
The TPS92380PWPR integrates a current-mode DC-DC controller with 3.3-A internal FET, supporting both boost and SEPIC topologies across 300 kHz–2.2 MHz switching frequency (set via FSET resistor). Its adaptive voltage control continuously monitors OUT1–OUT3 cathode voltages to dynamically adjust VOUT to the minimum required level - reducing power loss and thermal stress.
It features four logic-controlled functional blocks: (1) 3-channel 120-mA current sinks with <1% matching; (2) integrated LDO (4.3 V, 5 mA) for digital I/O bias; (3) comprehensive fault detection (LED open/short, VIN OVP/UVLO, SW OVP, thermal shutdown); and (4) PWM-dimming interface (100 Hz–20 kHz) with cycle-accurate output replication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED Channels | 3 independent current sinks - supports tri-string backlight configurations without external channel combining. |
| Max Output Voltage | 45 V - sufficient for driving 10–12 white LEDs in series (VF ≈ 3.8 V) under worst-case temperature and aging conditions. |
| Input Voltage Range | 4.5 V to 40 V - compatible with 5 V, 12 V, and 24 V industrial rails and automotive battery-supplied systems. |
| Current Matching | 1% typical - ensures uniform brightness across backlight zones without per-channel calibration. |
| Dimming Ratio | 10,000:1 at 100 Hz - enables deep black levels and high contrast in industrial HMI and medical displays. |
| Switching Frequency | 300 kHz to 2.2 MHz - allows EMI-sensitive designs to avoid critical bands (e.g., AM radio, CISPR-25 Class 5) via spread spectrum or SYNC pin. |
| Fault Outputs | Dedicated open-drain FAULT pin - asserts low on LED open/short, input OVP/UVLO, boost OVP, or thermal shutdown for system-level safety response. |
Pinout & Package
TPS92380PWPR is housed in a thermally enhanced 20-pin HTSSOP (PWP) package (6.50 mm × 4.40 mm) with exposed thermal pad for PCB heat dissipation. Pin count and function align precisely with the TPS92380 variant - differing from TPS92381 by omission of OUT4 functionality (pin 12 is GND, not OUT4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (pins 1, 20) | Power input & OVP sense | Dual-input configuration improves current handling and reduces trace inductance; OVP triggers at 43 V (typical) to protect downstream components. |
| OUT1–OUT3 (pins 15, 14, 13) | LED current sink outputs | Each delivers up to 120 mA with 1% matching; unused sinks must be tied to GND to disable and exclude from adaptive voltage loop. |
| ISET (pin 10) | Current programming node | Resistor to GND (20 kΩ–129 kΩ) sets full-scale current; 20 kΩ yields 120 mA, enabling precise per-string brightness tuning. |
| FSET (pin 3) | Frequency setting input | Resistor to GND (24 kΩ–219 kΩ) configures switching frequency; 163 kΩ sets 400 kHz for optimal efficiency in 12 V input/26 V output cases. |
| FAULT (pin 5) | Open-drain fault indicator | Active-low signal reports combined faults; requires external pullup (e.g., 10 kΩ to VDDIO/EN) for microcontroller interrupt or status monitoring. |
| VDDIO/EN (pin 4) | Enable & digital I/O supply | Logic-high (>1.65 V) enables device and powers PWM/SYNC inputs; eliminates need for separate 3.3 V rail in cost-sensitive designs. |
| SYNC (pin 6) | External clock synchronization | Accepts 300 kHz–2.2 MHz external clock; disables spread spectrum when asserted high - critical for multi-device EMI coherence. |
| PGND (pin 17) | Power ground return | Separate from signal GND (pins 9, 11) to prevent noise coupling into current-sink reference paths and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Voltage Control | Monitors OUT1–OUT3 cathodes in real time and adjusts VOUT to just exceed the lowest string's forward voltage - cuts power loss by up to 18% vs fixed-output designs. |
| Integrated 3.3-A Switch FET | Eliminates external MOSFET and gate driver, reducing BOM count and layout area while maintaining >88% peak efficiency at 400 kHz/12 V input. |
| Spread Spectrum Modulation | ±3% frequency dither at 1 kHz lowers peak EMI by 10 dB - meets CISPR-25 Class 5 limits without added shielding or ferrites in automotive displays. |
| Comprehensive Fault Protection | Detects and flags LED open/short, input OVP/UVLO, boost OVP, and thermal shutdown (165°C trip) - enables fail-safe backlight shutdown in safety-critical HMIs. |
| Internal 4.3-V LDO | Supplies clean 5 mA to PWM/SYNC pins directly from VIN - removes need for external regulator and simplifies power tree in battery-powered portable panels. |
Applications
| Industrial Backlight | Consumer Backlight |
|---|---|
|
Use Scenario: Medium-size (7–12 inch) industrial HMI panels in factory automation, PLC interfaces, and medical diagnostic displays requiring long-term luminance stability and wide temperature operation. IC Role / Device Role / Timing Role: Primary LED current controller and power converter - regulates three independent backlight strings with synchronized PWM dimming and adaptive voltage scaling. Use Value: 1% current matching ensures uniform brightness across viewing angles; thermal shutdown and LED fault reporting enable ISO 13849-compliant safety monitoring. |
Use Scenario: Mid-tier consumer tablets, smart displays, and portable media players where cost, board space, and EMI compliance are prioritized over ultra-high-end contrast. IC Role / Device Role / Timing Role: Integrated backlight driver delivering 10,000:1 dimming ratio at 100 Hz - replicates input PWM waveform with sub-µs timing fidelity for flicker-free viewing. Use Value: Spread spectrum and SYNC pin allow EMI optimization during FCC/CE testing; single-chip solution reduces layer count and assembly cost vs discrete boost + current sink designs. |
| Industrial Illumination | Automotive Display Backlight |
|
Use Scenario: LED panel lighting for machine vision systems, inspection stations, and control room dashboards needing consistent color point and minimal thermal drift. IC Role / Device Role / Timing Role: Constant-current source with adaptive headroom control - maintains stable LED current despite VF shift due to ambient temperature changes (−40°C to +125°C). Use Value: Input range (4.5–40 V) accommodates 24 V industrial supplies with brownout tolerance; UVLO (3.85 V falling) prevents erratic behavior during power-up/down transients. |
Use Scenario: Instrument cluster and center-stack displays in passenger vehicles requiring AEC-Q100 Grade 1 qualification and robust fault handling. IC Role / Device Role / Timing Role: Backlight power manager with integrated OVP (43 V), thermal shutdown (165°C), and open/short LED detection - supports ASIL-B functional safety goals. Use Value: Exposed thermal pad and RθJA = 44.2°C/W enable conduction cooling in sealed enclosures; FAULT pin provides direct connection to vehicle CAN gateway for diagnostic logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS92381PWPR | 4-channel version with identical specs except pin 12 = OUT4 (not GND); same package, thermal performance, and feature set. | Supports quad-string backlight layouts; requires rework if migrating from TPS92380PWPR due to pin 12 function change. | Select TPS92381PWPR only when fourth LED string is needed - no benefit for 3-string designs due to unused OUT4 requiring GND tie-off. |
| LM3409QMHX/NOPB | Single-channel buck-boost LED driver; no integrated current sinks, no adaptive voltage control, no PWM replication - requires external MOSFET and current sense. | Targeted at high-power single-string applications (e.g., automotive headlights); lacks multi-string synchronization and fault granularity of TPS92380PWPR. | Choose LM3409QMHX/NOPB only for non-backlight, high-current single-LED applications where cost-per-watt outweighs integration benefits. |
Compared with TPS92381PWPR, TPS92380PWPR saves board space and cost in 3-string designs by eliminating unused OUT4 routing; compared with LM3409QMHX/NOPB, it delivers faster time-to-market via integrated current sinks, adaptive voltage, and fault reporting - reducing validation effort for medium-size panel backlighting.
Availability
TPS92380PWPR is available at Aetrix Electronics and suitable for industrial HMI backlighting, consumer display illumination, and automotive instrument cluster applications requiring stable component supply, long-lifecycle support, and AEC-Q100-aligned reliability.
Supply support for TPS92380PWPR 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 over 50 years of innovation in high-reliability power conversion and LED control solutions.
The TPS92380PWPR belongs to TI's LED backlight driver product line, engineered specifically for medium-size LCD panels requiring high-efficiency, multi-string current regulation, adaptive voltage scaling, and robust fault protection in industrial and automotive environments.
FAQ
What is the maximum LED string voltage supported by the TPS92380PWPR?
The TPS92380PWPR supports up to 45 V output voltage, enabling drive of LED strings with total forward voltage up to ~42 V (accounting for 3 V headroom). This accommodates 10–12 white LEDs (VF ≈ 3.8 V at 120 mA) across temperature and aging extremes - confirmed in TI's SNVSBZ6 datasheet Section 7.10.
Does the TPS92380PWPR require an external MOSFET for boost operation?
No, the TPS92380PWPR integrates a 3.3-A, 400-mΩ internal switch FET - eliminating the need for external high-side MOSFETs, gate drivers, or associated passive components. This is validated in Section 1 (Features) and Section 7.10 of the SNVSBZ6 datasheet, where ISW_MAX = 3.3 A (typical) is specified.
How does adaptive voltage control improve efficiency in the TPS92380PWPR?
The TPS92380PWPR continuously monitors OUT1–OUT3 cathode voltages and dynamically adjusts boost output to the minimum level required - typically 0.9 V above the highest string's VF. This reduces power loss in the current sinks and boost diode, improving system efficiency by up to 18% versus fixed-output designs, as shown in Figure 7-5 of SNVSBZ6.
Can the TPS92380PWPR be synchronized to an external clock?
Yes, the TPS92380PWPR accepts an external 300 kHz–2.2 MHz clock on the SYNC pin (pin 6). When active, this disables spread spectrum and locks switching frequency to the external source - essential for EMI coherence in multi-board systems. This behavior is defined in Section 8.3.1.1.2 and Table 8-1 of SNVSBZ6.
What fault conditions does the TPS92380PWPR detect and report?
The TPS92380PWPR detects and asserts the FAULT pin for LED open/short, VIN overvoltage (43 V typ), VIN undervoltage (3.85 V falling), boost output overvoltage (FB threshold = 2.3 V), SW overvoltage, and thermal shutdown (165°C trip). All are documented in Sections 1, 7.7, and 8.1 of SNVSBZ6.
TPS92380PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- -
- Internal Switch(s):
- No
- Number of Outputs:
- 3
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 45V
- Voltage - Output:
- 0V ~ 40V
- Current - Output / Channel:
- 120mA
- Frequency:
- 300kHz ~ 2.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS92380PWPR FAQ
1.How can I place an order for TPS92380PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS92380PWPR 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 TPS92380PWPR reliable?
The price and inventory of TPS92380PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92380PWPR is usually 5 days.
3.What payment methods are accepted for TPS92380PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92380PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS92380PWPR?
TPS92380PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS92380PWPR 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 TPS92380PWPR?
For technical support, including TPS92380PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92380PWPR requirements.
6.How does Aetrix verify that TPS92380PWPR is sourced from the original manufacturer or authorized distributors?
All TPS92380PWPR 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 TPS92380PWPR meets industry standards.
7.What is the process for return or replacement of TPS92380PWPR?
All TPS92380PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS92380PWPR, 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 TPS92380PWPR part is unused and in its original packaging.
Return procedure for TPS92380PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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