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Texas Instruments TPS25842QWRHBRQ1
- Part No.:
- TPS25842QWRHBRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS25842QWRHBRQ1.pdf
- Description:
- IC POWER MANAGEMENT
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS25842QWRHBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive USB Type-A BC1.2 synchronous buck controller with integrated data switches, delivering 5.1 V ±1% at up to 3.5 A output current over 4.5–36 V input range. It implements cable droop compensation (up to 1.5 V), high-bandwidth DP/DM analog switches (800 MHz BW), and VBUS short-to-VBAT protection - used in infotainment head units to maintain stable charging under variable cable loads.
For engineers reviewing the TPS25842QWRHBRQ1 datasheet, TPS25842QWRHBRQ1 pinout, TPS25842QWRHBRQ1 application, or TPS25842QWRHBRQ1 equivalent, key selection criteria include its 32-pin VQFN wettable flank package, absence of DP/DM short-to-VBAT protection (vs. TPS25840-Q1), programmable current limit via ILIMIT, and RT/SYNC frequency synchronization capability from 300 kHz to 2.2 MHz.
Technical Context
The TPS25842QWRHBRQ1 integrates a current-mode synchronous buck regulator with internal compensation and a precision current-sense amplifier for linear cable compensation. Its dual-threshold current-limit architecture supports either average-current limiting or external NMOS-based overcurrent handling via LS_GD.
It embeds high-bandwidth analog switches (RDS(on) = 3.4–7.7 Ω, 800 MHz bandwidth) between DP_IN/DP_OUT and DM_IN/DM_OUT, compliant with USB BC1.2 CDP/SDP detection. Unlike TPS25840-Q1, it omits DP_IN/DM_IN short-to-VBAT protection - confirmed by device comparison table and Section 5 description.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 36 V - supports full automotive battery range including cold-crank (4.5 V) and load-dump transients (36 V). |
| Output Voltage | 5.1 V ±1% - tightly regulated USB VBUS level enabling BC1.2-compliant charging without external feedback. |
| Max Output Current | 3.5 A - delivers full USB-C PD-adjacent power to single-port automotive chargers. |
| Cable Compensation | Up to 1.5 V - dynamically adjusts output voltage vs. load current to maintain constant VBUS at device connector. |
| Switching Frequency | 300 kHz to 2.2 MHz - adjustable via RT resistor or external SYNC clock; avoids AM band above 2.1 MHz. |
| Data Switch Bandwidth | 800 MHz - preserves USB 2.0 signal integrity (480 Mbps) with <0.15 Ω RDS(on) mismatch between DP/DM paths. |
| AEC-Q100 Grade | Grade 1 (–40°C to +125°C TA) - qualified for under-hood and dashboard-mounted infotainment systems. |
Pinout & Package
TPS25842QWRHBRQ1 uses a 32-pin VQFN package (5.00 mm × 5.00 mm) with wettable flanks for automated optical inspection. Thermal pad is electrically connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (1,2,3) | Power Input | High-current VIN connection; requires local 10 µF ceramic bypass to PGND. |
| SW (28–31) | Power Switch Node | Connects to buck inductor; high di/dt node requiring tight layout and Kelvin routing. |
| CSN/OUT (13) | Current Sense Negative / Buck Output | Regulated 5.1 V output and negative sense input for current monitoring and cable compensation. |
| CSP (14) | Current Sense Positive | Positive sense input referenced to CSN/OUT; forms differential pair for precise current limit setting. |
| ILIMIT (12) | Current Limit Programming | Resistor-connected pin sets average current limit threshold (e.g., 13 kΩ = 3.5 A). |
| IMON (11) | Cable Compensation Tuning | Resistor-connected pin sets max compensation voltage (e.g., 13 kΩ = 1.0 V at full load). |
| RT/SYNC (9) | Frequency Control | Configurable as resistor-set oscillator (300 kHz–2.2 MHz) or external clock input (300–2300 kHz). |
| DP_IN/DM_IN (17,18) | USB Data Input | Accepts USB 2.0 signals from Type-A connector; rated for ±8-kV contact ESD per IEC 61000-4-2. |
| DP_OUT/DM_OUT (7,8) | USB Data Output | Drives host-side USB PHY; 800 MHz bandwidth ensures minimal signal degradation. |
| FAULT (24) | Fault Reporting | Active-low open-drain flag indicating overcurrent, overvoltage, thermal shutdown, or hiccup mode. |
| BUCK_ST (23) | Buck Startup Status | Active-low open-drain signal asserted after buck soft-start completes and data switches enable. |
| EN/UVLO (4) | Enable & UVLO | Logic-level enable with 1.14 V rising threshold; supports adjustable UVLO using external resistor divider. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Cable Compensation | Linear VBUS adjustment up to 1.5 V compensates for voltage drop across long automotive cables, maintaining optimal charging at portable device end. |
| High-Bandwidth USB Data Switches | 800 MHz bandwidth and <0.15 Ω DP/DM resistance mismatch preserve USB 2.0 eye diagram integrity and meet BC1.2 signaling requirements. |
| Dual-Mode Current Limiting | Supports either internal average-current limiting (via ILIMIT) or external NMOS-based overcurrent protection (via LS_GD), enabling continued system operation during USB port faults. |
| Functional Safety Documentation | TI provides FIT rate, failure mode analysis, and safety manual to support ISO 26262 ASIL-B system integration in automotive ECUs. |
| Wettable Flank QFN Package | 32-pin VQFN (RHB0032AA) enables automated AOI of solder joints - critical for zero-defect automotive manufacturing. |
Applications
| Automotive Infotainment Head Unit | USB Media Hub |
|---|---|
Use Scenario: Integrated USB charging port in center-stack display unit powering smartphones and tablets while supporting data passthrough for CarPlay/Android Auto. IC Role / Device Role / Timing Role: Synchronous buck regulator + USB data switch IC providing regulated 5.1 V @ 3.5 A and bidirectional DP/DM signal routing. Use Value: Maintains stable VBUS despite 2-m cable length and 3.5 A load, ensuring reliable device detection and full-speed charging without negotiation failure. |
Use Scenario: Multi-port USB hub in rear-seat entertainment system supplying power and data to multiple peripherals (cameras, storage, controllers). IC Role / Device Role / Timing Role: Single-chip USB power delivery and signal conditioning solution replacing discrete buck + USB switch + protection ICs. Use Value: Reduces BOM count by 4+ components and eliminates inter-stage PCB trace mismatches that degrade USB 2.0 signal integrity. |
| Automotive USB Charger Port | OBD-II Diagnostic Interface |
Use Scenario: Dedicated 12 V–to–5 V USB-A port in center console or armrest, exposed to harsh temperature cycling and vibration. IC Role / Device Role / Timing Role: Automotive-grade USB power controller with AEC-Q100 Grade 1 qualification and integrated fault reporting (FAULT pin). Use Value: Eliminates need for external overvoltage, overtemperature, and short-circuit protection circuitry - reducing design risk and validation effort. |
Use Scenario: USB-powered diagnostic tool interface connecting vehicle CAN bus to technician laptop via USB-to-serial bridge. IC Role / Device Role / Timing Role: Robust USB VBUS supply with ESD-hardened DP/DM lines (±8-kV contact) and fast fault response (<100 µs hiccup lockout). Use Value: Prevents ESD-induced latch-up on diagnostic equipment during hot-plug events in service bay environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB power delivery applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25840QWRHBRQ1 | Includes DP_IN/DM_IN short-to-VBAT protection (18 V tolerance); same pinout and package. | Required where USB data lines may be exposed to battery shorts (e.g., direct-wired dashcams). | Select TPS25840QWRHBRQ1 only if Dx short-to-battery protection is mandated; otherwise TPS25842QWRHBRQ1 offers identical core functionality at lower cost. |
| TPS65987DQWRJURQ1 | USB-C PD controller with integrated 5-V/3-A buck; supports USB PD 3.0, alternate modes, and CC logic. | Needed for USB-C receptacles, programmable power supply, or DisplayPort Alt Mode support. | Choose TPS65987DQWRJURQ1 when upgrading from USB-A to USB-C or requiring PD contract negotiation; not a drop-in replacement for Type-A BC1.2 use cases. |
Compared with TPS25840QWRHBRQ1, TPS25842QWRHBRQ1 removes redundant Dx short-to-VBAT protection to reduce die size and cost while retaining all BC1.2 charging, cable compensation, and data-switch functions. Versus TPS65987DQWRJURQ1, it lacks USB-C PD protocol stack but delivers higher efficiency and simpler layout for legacy USB-A ports.
Availability
TPS25842QWRHBRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, USB media hubs, and USB charger ports requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS25842QWRHBRQ1 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 automotive ICs, with decades of automotive qualification expertise and AEC-Q100 process validation.
The TPS2584x-Q1 product line was designed specifically for automotive USB power delivery - integrating buck regulation, BC1.2 charging logic, and high-fidelity data switching into a single AEC-Q100-qualified package for infotainment and telematics systems.
FAQ
What is the maximum cable compensation voltage supported by the TPS25842QWRHBRQ1?
The TPS25842QWRHBRQ1 supports up to 1.5 V of cable compensation, implemented via the IMON pin and internal current-sense amplifier. With RIMON = 13 kΩ, the device delivers 1.0 V of compensation at full 3.5 A load; increasing RIMON scales this linearly, reaching 1.5 V at ~20 kΩ. This directly offsets resistive drop in long automotive USB cables to hold VBUS steady at the connected device.
Does the TPS25842QWRHBRQ1 support DP/DM short-to-VBAT protection?
No, the TPS25842QWRHBRQ1 does not support DP_IN or DM_IN short-to-VBAT protection. This feature is explicitly excluded per the device comparison table and Section 5 description, which states "TPS25842-Q1 don't support data line (Dx) short to VBAT protection." Only TPS25840-Q1 includes this 18-V tolerant protection on DP_IN/DM_IN pins.
How is the switching frequency configured on the TPS25842QWRHBRQ1?
The TPS25842QWRHBRQ1 switching frequency is set via the RT/SYNC pin: connecting a resistor to GND programs frequency from 300 kHz to 2.2 MHz (e.g., 100 kΩ ≈ 400 kHz); applying an external clock signal above 3.5 V threshold switches it to synchronization mode (300–2300 kHz). The internal PLL locks within 100 µs, and no external components are needed beyond the timing resistor or clock source.
What is the purpose of the LS_GD pin on the TPS25842QWRHBRQ1?
The LS_GD pin on the TPS25842QWRHBRQ1 drives the gate of an external NMOS FET to implement secondary overcurrent protection. When configured for NFET current limiting, LS_GD sources up to 12.5 V and sinks 50 µA, enabling the external FET to disconnect the USB port during overloads while allowing the buck regulator to continue powering other system loads - a key differentiator from single-path protection schemes.
What USB BC1.2 charging modes does the TPS25842QWRHBRQ1 support?
The TPS25842QWRHBRQ1 supports USB Battery Charging Specification v1.2 CDP (Charging Downstream Port) and SDP (Standard Downstream Port) modes. It performs D+ and D− voltage signature detection autonomously, enabling correct current allocation (1.5 A for CDP, 500 mA for SDP) without host processor intervention - essential for plug-and-play automotive USB ports.
TPS25842QWRHBRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB Protection
- Current - Supply:
- 700µA
- Voltage - Supply:
- 4.5V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 32-VQFN (5x5)
TPS25842QWRHBRQ1 FAQ
1.How can I place an order for TPS25842QWRHBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS25842QWRHBRQ1 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 TPS25842QWRHBRQ1 reliable?
The price and inventory of TPS25842QWRHBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS25842QWRHBRQ1 is usually 5 days.
3.What payment methods are accepted for TPS25842QWRHBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS25842QWRHBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS25842QWRHBRQ1?
TPS25842QWRHBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS25842QWRHBRQ1 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 TPS25842QWRHBRQ1?
For technical support, including TPS25842QWRHBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS25842QWRHBRQ1 requirements.
6.How does Aetrix verify that TPS25842QWRHBRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS25842QWRHBRQ1 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 TPS25842QWRHBRQ1 meets industry standards.
7.What is the process for return or replacement of TPS25842QWRHBRQ1?
All TPS25842QWRHBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS25842QWRHBRQ1, 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 TPS25842QWRHBRQ1 part is unused and in its original packaging.
Return procedure for TPS25842QWRHBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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