Texas Instruments TPS2511QDGNRQ1

Overview

TPS2511QDGNRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified USB Dedicated Charging Port (DCP) controller and current-limiting power switch. It integrates an 80-mΩ high-side N-channel MOSFET, supports BC1.2 short-mode, divider-mode (2.7 V/2.0 V), and 1.2 V/1.2 V DCP detection, delivers up to 2.3 A typical current limit, and operates from 4.5 V to 5.5 V input. It is used in vehicle USB power chargers and AC-DC wall adapters requiring compliant fast-charging handshaking.

For engineers reviewing the TPS2511QDGNRQ1 datasheet, TPS2511QDGNRQ1 pinout, TPS2511QDGNRQ1 application, or TPS2511QDGNRQ1 equivalent, key selection criteria include DCP auto-detect accuracy across three charging schemes, programmable ±10% current limit via ILIM_SET resistor, hiccup-mode short-circuit protection with 3.8 V output threshold, and MSOP-8 package compatibility with automotive thermal requirements (–40°C to 125°C).

Technical Context

The TPS2511QDGNRQ1 implements a dual-path DCP identification architecture: it monitors DP/DM line voltages to auto-select between short-mode (D+–D− shorted), divider-mode (2.7 V on DP / 2.0 V on DM or vice versa), and 1.2 V/1.2 V mode - all while maintaining accurate current regulation via external R_{ILIM_SET}. Its internal charge pump drives the high-side MOSFET gate, enabling fast turn-on (2.6 ms typical) and controlled soft-start.

Protection logic combines independent overcurrent detection (triggering CS pin at ~50% of set limit), thermal shutdown (135°C rising threshold in current limit), and UVLO (4.1 V turn-on with 100 mV hysteresis). Hiccup mode activates after 16 ms of sustained low-V_OUT (<3.8 V) and enforces 12 s off-time, reducing average short-circuit current to milliampere levels for thermal safety.

Key Specifications

Pinout & Package

TPS2511QDGNRQ1 is housed in an 8-pin MSOP (DGN) package with exposed thermal pad (PowerPAD™) for enhanced heat dissipation in automotive environments. The package measures 3.0 mm × 3.0 mm × 1.0 mm and supports reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB DCP controller applications.

Compared with TPS2513QDGNRQ1, TPS2511QDGNRQ1 omits the auxiliary LDO but retains full DCP auto-detect and hiccup protection - making it optimal for cost-sensitive automotive chargers with shared 5 V rail. Against NCP380LSN32T2G, TPS2511QDGNRQ1 adds essential USB protocol intelligence at the expense of slightly higher R_DS(on), justifying its use in any application requiring BC1.2 compliance.

Availability

TPS2511QDGNRQ1 is available at Aetrix Electronics and suitable for vehicle USB power chargers, AC-DC wall adapters with USB port, and automotive infotainment systems requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.

Supply support for TPS2511QDGNRQ1 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 company specializing in analog, embedded processing, and power management ICs, with leadership in automotive-grade components and USB interface solutions.

The TPS2511-Q1 product line was designed specifically for automotive and industrial USB charging applications requiring AEC-Q100 qualification, robust DCP protocol support, and integrated overcurrent and thermal protection in a space-constrained MSOP package.

FAQ

What USB charging protocols does the TPS2511QDGNRQ1 support?

The TPS2511QDGNRQ1 supports three USB charging protocols: BC1.2 short-mode (D+ shorted to D−), divider-mode (2.7 V on DP / 2.0 V on DM or vice versa), and 1.2 V/1.2 V mode. It automatically detects the attached device's required signature and configures DP/DM outputs accordingly - no external configuration or firmware is needed. This ensures compatibility with smartphones, tablets, and other portable devices requiring fast-charging handshaking.

How is the current limit set on the TPS2511QDGNRQ1?

The current limit on the TPS2511QDGNRQ1 is set using an external resistor connected between ILIM_SET (Pin 2) and GND. The typical current limit ranges from 1.06 A (with 44.2 kΩ) to 3.03 A (with 16.9 kΩ), calculated as IOS_TYP ≈ 51228 / RILIM (in kΩ). The device achieves ±10% accuracy over temperature, and the resistor value must remain within 16.9 kΩ–750 kΩ to ensure proper operation of the TPS2511QDGNRQ1.

Does the TPS2511QDGNRQ1 provide short-circuit protection, and how does it work?

Yes, the TPS2511QDGNRQ1 provides hiccup-mode short-circuit protection. When output current exceeds the programmed limit and V_OUT drops below 3.8 V for 16 ms, the device turns off for 12 seconds, then retries. This cycling limits average fault current to milliampere levels, preventing thermal damage. The TPS2511QDGNRQ1 also includes overtemperature shutdown (135°C) and UVLO (4.1 V) to further safeguard the system.

What is the role of the CS pin on the TPS2511QDGNRQ1?

The CS pin on the TPS2511QDGNRQ1 is an active-low open-drain output that asserts when the OUT current exceeds approximately 50% of the programmed current limit. It provides real-time current monitoring for USB cable resistance compensation - allowing a system MCU to increase VBUS setpoint to offset I×R drop. The CS pin sinks up to 10 mA and features built-in deglitching (8 ms) to reject noise transients on the TPS2511QDGNRQ1.

Is the TPS2511QDGNRQ1 compatible with standard MSOP-8 PCB footprints?

Yes, the TPS2511QDGNRQ1 uses the industry-standard 8-pin MSOP (DGN) package with 0.65 mm pitch and 3.0 mm × 3.0 mm body size. Its footprint matches JEDEC MO-187AA, including the exposed thermal pad (PowerPAD™) which must be soldered to a thermal land for optimal performance. No special layout deviations are required - standard MSOP-8 reflow profiles and stencil designs apply directly to the TPS2511QDGNRQ1.