Texas Instruments TPS5130QPTRQ1

Overview

TPS5130QPTRQ1 from Texas Instruments is an automotive-grade triple synchronous buck controller with integrated NMOS LDO controller, delivering three independent 0.9–8.5 V DC/DC outputs and one 0.9–2.5 V LDO output. It operates across 4.5–28 V input, supports 500-kHz PWM mode, and integrates high-side/low-side gate drivers for external N-channel MOSFETs in notebook PCs and DSP applications.

For engineers reviewing the TPS5130QPTRQ1 datasheet, TPS5130QPTRQ1 pinout, TPS5130QPTRQ1 application, or TPS5130QPTRQ1 equivalent, key selection considerations include its triple-buck + LDO architecture, 180° phase-shifted operation to minimize input ripple, programmable short-circuit protection per channel, and AEC-Q100 qualification for automotive power management.

Technical Context

The TPS5130QPTRQ1 implements three independent synchronous buck regulator controllers (SBRC) with auto PWM/SKIP mode selection via PWM_SEL, each using a high-speed error amplifier (2.5 MHz unity-gain bandwidth) and precision 0.85-V reference (±1.5% tolerance). Each SBRC features dedicated current-sense inputs (TRIPx), overvoltage/undervoltage comparators referenced to INVx, and programmable soft-start via SS_STBYx pins.

Its integrated LDO controller drives an external N-channel MOSFET via LDO_GATE, includes current-limit protection (50 mV threshold), overshoot suppression via LDO_OUT sink capability (25 mA), and shares fault latching with the buck channels through a common FLT timer. The device uses a single CT capacitor to set oscillator frequency (300–500 kHz) and supports dead-time control (100 ns typical) to prevent shoot-through.

Key Specifications

Pinout & Package

TPS5130QPTRQ1 is housed in a 48-pin LQFP (PT) package with exposed thermal pad, optimized for automotive thermal reliability and PCB layout flexibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-buck + LDO controller applications.

Compared with TPS5130QPTRQ1, TPS51220ARUKR reduces integration but sacrifices automotive compliance and rail count, while ISL6264CRZ-T offers higher-frequency buck control but requires external LDO implementation and loses coordinated fault response.

Availability

TPS5130QPTRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and DSP-based industrial controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant power management ICs.

Supply support for TPS5130QPTRQ1 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 technologies, with decades of automotive IC design expertise.

The TPS5130-Q1 product line delivers highly integrated, AEC-Q100-qualified multi-rail controllers for next-generation automotive computing platforms where space, thermal performance, and functional safety are critical.

FAQ

What is the maximum input voltage rating for the TPS5130QPTRQ1?

The TPS5130QPTRQ1 has an absolute maximum VIN rating of 30 V, with recommended operating range from 4.5 V to 28 V. This allows direct connection to 12-V and 24-V automotive batteries while accommodating load dump transients up to 30 V without damage. The device's robust input stage ensures reliable operation across cold-crank and jump-start conditions encountered in vehicle electrical systems.

Does the TPS5130QPTRQ1 support phase interleaving between its three buck controllers?

Yes, the TPS5130QPTRQ1 inherently operates its three synchronous buck controllers with 180° phase shift between CH1/CH2 and CH3, minimizing total input current ripple and enabling smaller input bulk capacitors. This fixed interleaving is hardwired in silicon and does not require external synchronization signals or configuration registers.

How is overcurrent protection implemented for each buck channel in the TPS5130QPTRQ1?

Each buck channel in the TPS5130QPTRQ1 implements resistor-programmable overcurrent protection using an external resistor between VIN_SENSEx and TRIPx pins. An internal 13 µA current source develops a voltage across this resistor; when the high-/low-side MOSFET V_DS exceeds that voltage during conduction, the current comparator triggers pulse extension or termination to protect the FETs and maintain output regulation.

Can the TPS5130QPTRQ1's LDO controller be used independently of the buck controllers?

Yes, the TPS5130QPTRQ1's LDO controller can operate independently: STBY_LDO can be asserted to enable the LDO while keeping all buck channels disabled, and the LDO soft-start timing (fixed at ~600 ms) functions autonomously. The LDO_IN supply may be sourced from an external rail or from one of the buck outputs, supporting flexible power-up sequencing.

What is the function of the PGOUT pin on the TPS5130QPTRQ1, and how is its delay programmed?

The PGOUT pin on the TPS5130QPTRQ1 is an open-drain power-good signal that goes low if any regulated output (buck or LDO) deviates beyond ±7% of its target. Its assertion delay is programmed via an external capacitor on the PG_DELAY pin, which controls the time before PGOUT asserts after all outputs stabilize - enabling precise system-level power sequencing in complex multi-rail designs.