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Texas Instruments TPS25840QCWRHBRQ1
- Part No.:
- TPS25840QCWRHBRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS25840QCWRHBRQ1.pdf
- Description:
- USB-A SDP/CDP CHARGE PORT CONVER
- Quantity:
- Payment:
- Shipping:
Inventory:4,960
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Product details
Overview
TPS25840QCWRHBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive USB Type-A BC1.2 synchronous buck controller with integrated data-line switches and cable droop compensation. It delivers 5.1 V ±1% at up to 3.5 A from 4.5–36 V input, supports FPWM with spread-spectrum dithering, and provides DP/DM short-to-VBAT protection - enabling robust USB charging in infotainment head units under heavy load and harsh ESD conditions.
For engineers reviewing the TPS25840QCWRHBRQ1 datasheet, TPS25840QCWRHBRQ1 pinout, TPS25840QCWRHBRQ1 application, or TPS25840QCWRHBRQ1 equivalent, this device requires attention to its dual current-limit modes (buck-internal vs. external NFET), RT/SYNC frequency programming range (300 kHz–2.2 MHz), VBUS discharge capability, and differential data switch bandwidth (800 MHz) when designing for automotive USB media hubs or front-panel charger ports.
Technical Context
The TPS25840QCWRHBRQ1 integrates a current-mode synchronous buck regulator with internal compensation, supporting adjustable switching frequency via RT/SYNC resistor or external clock synchronization. Its control loop uses a precision current sense amplifier (CSP–CSN/OUT) to enable programmable cable compensation up to 1.5 V and dual-threshold current limiting - one for average buck output current, another for external NMOS-based overcurrent handling.
It embeds high-bandwidth analog switches (RDS(ON) = 3.4–7.7 Ω, BW = 800 MHz) on DP/DM paths with ±8-kV contact / ±15-kV air IEC 61000-4-2 ESD rating on data pins, plus dedicated short-to-VBAT protection on VBUS, DP_IN, and DM_IN - a feature distinguishing it from the TPS25842-Q1 variant and critical for automotive USB port survivability.
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% - maintains stable USB VBUS at connected device regardless of cable length or load current. |
| Max output current | 3.5 A - enables fast-charging compliance for USB BC1.2 CDP mode in automotive infotainment systems. |
| Switching frequency | 300 kHz to 2.2 MHz - adjustable via RT resistor or external SYNC clock; avoids AM band above 2.1 MHz. |
| Cable compensation range | Up to 1.5 V - linearly adjusts buck output voltage with load current to offset IR drop in long automotive harnesses. |
| Data switch bandwidth | 800 MHz - preserves USB 2.0 signal integrity (480 Mbps) with <0.15 Ω RDS(ON) mismatch between DP/DM paths. |
| ESD rating (DP/DM) | ±8 kV contact / ±15 kV air per IEC 61000-4-2 - meets automotive EMC requirements without external TVS diodes. |
| Short-to-VBAT protection | Supported on VBUS, DP_IN, DM_IN - withstands up to 18 V on data lines, enabling direct connection to battery-routed USB ports. |
Pinout & Package
TPS25840QCWRHBRQ1 is housed in a 32-pin VQFN package (RHB0032AA) with 5.00 mm × 5.00 mm body size and wettable flanks for automated optical inspection. Thermal pad is electrically connected to PGND and anchored at corners A1–A4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (1,2,3) | Power input | Primary buck input supply; requires local high-quality bypass capacitors to PGND. |
| SW (28,29,30,31) | Power switch node | Connects to inductor; internally tied to HS-FET source and LS-FET drain. |
| PGND (25,26,27) | Power ground | High-current return path; must be low-inductance, wide-trace connection to thermal pad and AGND. |
| AGND (16) | Analog reference ground | Reference for internal references, logic, and current sense; connect directly to system ground plane. |
| CSP / CSN/OUT (14,13) | Current sense inputs | Differential pair measuring Rsense voltage; CSN/OUT also serves as regulated 5.1-V output node. |
| DP_IN / DM_IN (18,17) | USB upstream data inputs | Accept signals from USB Type-A connector; include short-to-VBAT and IEC 61000-4-2 protection. |
| DP_OUT / DM_OUT (7,8) | USB downstream data outputs | Drive host controller; feature 800-MHz bandwidth and <7.7-Ω RDS(ON) for USB 2.0 compliance. |
| RT/SYNC (9) | Frequency control | Resistor-to-GND sets fSW (300 kHz–2.2 MHz); pulled above threshold becomes PLL sync input. |
| FAULT / BUCK_ST (24,23) | Open-drain status flags | Active-low fault reporting (overcurrent, overtemp, OVP); BUCK_ST asserts before startup sequence begins. |
| ILIMIT / IMON (12,11) | External resistor nodes | Set current limit threshold and max cable comp voltage; require precision resistors (≤1% tolerance). |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous buck with internal compensation | Eliminates need for external compensation network; simplifies layout and reduces BOM count in space-constrained automotive modules. |
| Programmable cable droop compensation | Adjusts output voltage linearly with load current (up to 1.5 V) to maintain constant VBUS at portable device end - critical for reliable charging across vehicle harness lengths. |
| Dual current-limit architecture | Supports either internal average-current limiting or external NMOS-based overcurrent handling - allows continued 5-V supply to non-USB loads during USB port fault. |
| Integrated DP/DM short-to-VBAT protection | Enables direct routing of USB data lines to battery-supplied domains without risk of latch-up or damage - unique to TPS25840-Q1 vs. TPS25842-Q1. |
| FPWM with spread-spectrum dithering | Maintains fixed-frequency operation under all load conditions while reducing EMI peak amplitudes - essential for meeting CISPR 25 Class 5 limits in automotive cabins. |
| AEC-Q100 Grade 1 qualification | Rated for –40°C to +125°C ambient operation with H2/HBM and C5/CDM ESD ratings - validated for under-hood and dashboard-mounted infotainment applications. |
Applications
| Automotive Infotainment Head Unit | Front-Panel USB Media Hub |
|---|---|
Use Scenario: Integrated USB charging and data passthrough in center-stack display with long cable runs to rear-seat ports. IC Role / Device Role / Timing Role: Synchronous buck regulator + USB data switch + BC1.2 signature generator - manages power delivery and signal integrity simultaneously. Use Value: Maintains 5.1 V ±1% at device end despite >1.2 V IR drop in 3-m harness; DP/DM short-to-VBAT protection prevents failure during battery disconnect events. |
Use Scenario: Multi-port USB hub mounted near driver door with shared 12-V supply and mixed legacy/BC1.2 device support. IC Role / Device Role / Timing Role: Single-chip USB power manager with programmable current limit and automatic CDP/SDP detection. Use Value: Eliminates discrete current-sense op-amps and external USB ID resistors; supports simultaneous charging of two tablets at 1.5 A each with <0.15 Ω DP/DM RDS(ON) matching. |
| Rear-Seat Entertainment System | Telematics Control Unit (TCU) USB Port |
Use Scenario: Powering and communicating with USB peripherals (e.g., Wi-Fi dongles, storage drives) inside rear cargo area. IC Role / Device Role / Timing Role: High-reliability USB power switch with hiccup-mode short-circuit protection and thermal shutdown at 160°C. Use Value: Withstands repeated hot-plug cycles and transient overloads; ±15-kV air ESD rating ensures no field failures due to user-handling discharge. |
Use Scenario: Secure firmware update interface via USB-C adapter with strict voltage and timing tolerances. IC Role / Device Role / Timing Role: Client-mode capable USB controller with precise 5.1-V regulation and <100-ns fault response time. Use Value: Enables safe, verified bootloader updates by maintaining exact USB spec-compliant VBUS during enumeration - no brownout-induced corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25842QCWRHBRQ1 | Lacks DP_IN/DM_IN short-to-VBAT protection; same package, pinout, and buck specs. | Not suitable where USB data lines connect directly to battery domains; requires external protection if used in high-side routed designs. | Select only when cost sensitivity outweighs need for integrated short-to-battery robustness and board space is constrained. |
| NCP81239MNTXG | Standalone 3.5-A automotive buck regulator (no USB data switches or BC1.2 logic); 4.5–36 V input, 5.1 V ±1.5%. | Requires external USB switch IC and BC1.2 detection circuitry - increases component count and layout complexity. | Choose when USB data pass-through is unnecessary and maximum flexibility in current limit configuration is required. |
Compared with TPS25840QCWRHBRQ1, the TPS25842QCWRHBRQ1 omits critical short-to-VBAT protection on data lines - reducing system-level robustness in battery-connected USB ports - while the NCP81239MNTXG lacks integrated USB functionality entirely, demanding additional ICs to replicate BC1.2 compliance and data switching.
Availability
TPS25840QCWRHBRQ1 is available at Aetrix Electronics and suitable for automotive infotainment head units, front-panel USB media hubs, and telematics control unit (TCU) USB ports requiring stable component supply, AEC-Q100 qualification, and production-ready USB BC1.2 compliance.
Supply support for TPS25840QCWRHBRQ1 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-grade power management solutions, with decades of automotive qualification expertise and functional safety documentation support.
The TPS2584x-Q1 product line was designed specifically for automotive USB Type-A charging applications requiring integrated buck regulation, BC1.2 compliance, high-bandwidth data switching, and robust fault protection - targeting infotainment, media hub, and connectivity modules.
FAQ
What is the maximum cable compensation voltage supported by the TPS25840QCWRHBRQ1?
The TPS25840QCWRHBRQ1 supports up to 1.5 V of cable droop compensation, implemented via the IMON pin and external resistor. This linear compensation adjusts the buck output voltage proportionally to load current, ensuring stable 5.1 V at the connected device even with significant IR drop across long automotive harnesses - a key requirement for rear-seat charging reliability.
Does the TPS25840QCWRHBRQ1 support external clock synchronization?
Yes, the TPS25840QCWRHBRQ1 supports external clock synchronization via the RT/SYNC pin. When driven above the PLL upper threshold (≥3.5 V), the pin transitions from resistor-programmed frequency mode to high-impedance clock input, accepting external SYNC signals from 300 kHz to 2.3 MHz - enabling EMI reduction through frequency dithering or system-level clock alignment.
How does the TPS25840QCWRHBRQ1 handle overcurrent conditions on the USB port?
The TPS25840QCWRHBRQ1 implements dual overcurrent protection: cycle-by-cycle current limiting for immediate response, and hiccup-mode short-circuit protection after 128 consecutive current-limit trips. It also supports external NMOS-based current limiting via the LS_GD pin - allowing the buck regulator to continue powering non-USB loads during USB port faults.
Is the TPS25840QCWRHBRQ1 pin-compatible with the TPS25842QCWRHBRQ1?
Yes, the TPS25840QCWRHBRQ1 and TPS25842QCWRHBRQ1 share identical 32-pin VQFN (RHB0032AA) packaging, pinout, and core buck regulator specifications. However, the TPS25840QCWRHBRQ1 uniquely includes DP_IN/DM_IN short-to-VBAT protection - a functional difference requiring design verification if substituting between variants.
What USB BC1.2 modes does the TPS25840QCWRHBRQ1 support?
The TPS25840QCWRHBRQ1 supports both Charging Downstream Port (CDP) and Standard Downstream Port (SDP) modes per USB Battery Charging Specification v1.2. It automatically detects connected devices and applies appropriate D+/D− voltage signatures - enabling optimal charging current negotiation without host processor intervention.
TPS25840QCWRHBRQ1 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)
TPS25840QCWRHBRQ1 FAQ
1.How can I place an order for TPS25840QCWRHBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS25840QCWRHBRQ1 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 TPS25840QCWRHBRQ1 reliable?
The price and inventory of TPS25840QCWRHBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS25840QCWRHBRQ1 is usually 5 days.
3.What payment methods are accepted for TPS25840QCWRHBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS25840QCWRHBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS25840QCWRHBRQ1?
TPS25840QCWRHBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS25840QCWRHBRQ1 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 TPS25840QCWRHBRQ1?
For technical support, including TPS25840QCWRHBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS25840QCWRHBRQ1 requirements.
6.How does Aetrix verify that TPS25840QCWRHBRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS25840QCWRHBRQ1 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 TPS25840QCWRHBRQ1 meets industry standards.
7.What is the process for return or replacement of TPS25840QCWRHBRQ1?
All TPS25840QCWRHBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS25840QCWRHBRQ1, 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 TPS25840QCWRHBRQ1 part is unused and in its original packaging.
Return procedure for TPS25840QCWRHBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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