Texas Instruments TPS3513DR

Overview

TPS3513DR from Texas Instruments is a PC power supply supervisor IC designed for ATX/ATX12V-compliant systems. It provides coordinated overvoltage (OVP), undervoltage (UVP), and overcurrent (OCP) protection for 12 V, 5 V, and 3.3 V rails; features open-drain PGO and FPO outputs; and operates across –40°C to 85°C with 4.5 V to 15 V supply range.

For engineers reviewing the TPS3513DR datasheet, TPS3513DR pinout, TPS3513DR application, or TPS3513DR equivalent, this page delivers verified functional identity, validated SOIC-14 pin mapping, confirmed rail-specific trip thresholds (e.g., VS12 OVP = 13.8 V typ), real-world timing specs (300-ms PGO delay, 38-ms PSON debounce), and two technically documented alternative supervisors for PC PSU monitoring.

Technical Context

The TPS3513DR integrates three independent OCP comparators (IS12/IS5/IS33), dual UVP/OVP detection per rail (VS12/VS5/VS33), and a programmable current reference via RI pin (12.5–62.5 µA). Its fault latch architecture requires PSON low-to-high transition for reset, and all protection events assert FPO high while pulling PGO low.

It implements precise timing control: 300-ms PGI-to-PGO delay, 75-ms short-circuit turn-on protection delay for 3.3 V/5 V, 2.3-ms PSON-to-FPO turnoff delay, and 73-µs noise deglitching on OVP/UVP inputs. All logic is referenced to VDD, with VS12 supplying bias to OCP circuitry and drawing <1 mA.

Key Specifications

Pinout & Package

TPS3513DR is packaged in a 14-pin SOIC (D package), 1.75 mm max height, RoHS-compliant, with NIPDAU lead finish and MSL Level-1 rating. Pin 1 is marked by a beveled corner or dot; pin numbering follows standard SOIC convention (counterclockwise from top-left).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PC power supply supervision applications.

Compared with TPS3513DR, TPS3511DR omits 12 V supervision capability and cannot replace it in full-ATX applications, while UCD90120APW adds digital configurability at the expense of analog simplicity, layout area, and component count - making TPS3513DR optimal for fixed-function, high-volume PC PSU designs.

Availability

TPS3513DR is available at Aetrix Electronics and suitable for desktop PC power supplies, server ATX12V units, and industrial embedded power systems requiring stable component supply, long-lifecycle support, and RoHS-compliant SOIC packaging.

Supply support for TPS3513DR 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 expertise in power supply IC design.

The TPS3513DR belongs to TI's PC power supply supervisor product line, engineered specifically to meet Intel ATX/ATX12V specifications for rail monitoring, fault protection, and power-good signaling in desktop and server platforms.

FAQ

What is the primary function of the TPS3513DR in a PC power supply?

The TPS3513DR serves as a dedicated supervisor IC that monitors overvoltage, undervoltage, and overcurrent conditions across 12 V, 5 V, and 3.3 V rails in ATX/ATX12V-compliant power supplies. It asserts open-drain PGO and FPO signals to coordinate system power-up sequencing and initiate safe shutdown during faults. The TPS3513DR integrates precise timing blocks-including 300-ms PGO delay and 38-ms PSON debounce-to meet industry-standard power delivery requirements.

How does the TPS3513DR implement overcurrent protection for different voltage rails?

The TPS3513DR uses three dedicated current-sense inputs-IS12, IS5, and IS33-to monitor overcurrent on 12 V, 5 V, and 3.3 V rails respectively. An external resistor between RI and GND sets a reference current (12.5–62.5 µA), which scales the OCP trip point via internal current mirrors. For example, with RI = 56 kΩ and V(RI) = 1.15 V, I(ref) = 20 µA yields a 9.2 A trip on the 12 V rail. The TPS3513DR asserts FPO high and pulls PGO low within 73 µs of detecting sustained overcurrent.

What are the key timing parameters defined for the TPS3513DR?

The TPS3513DR specifies several critical timing parameters: 300-ms delay from PGI/VS33/VS5 stabilization to PGO assertion; 75-ms short-circuit turnon protection delay for 3.3 V/5 V rails; 38-ms PSON input debounce window; and 2.3-ms delay from PSON low-to-high to FPO deassertion during turnoff. All values are typicals across –40°C to 85°C and align with ATX platform requirements. The TPS3513DR also includes 73-µs noise deglitching on OVP/UVP inputs to prevent false triggering.

Can the TPS3513DR be used in systems requiring 5 VSB-only operation?

Yes, the TPS3513DR supports 5 VSB-only operation: its VDD supply range (4.5 V to 15 V) accommodates 5 V standby rails directly, and it draws only 1 mA typical supply current. The PGI input can be driven from 5 VSB logic, while PGO and FPO outputs are open-drain and compatible with 5 V pullups. The TPS3513DR maintains full supervision capability-including 3.3 V/5 V UVP detection and PGO generation-even when powered solely from 5 VSB, making it suitable for always-on subsystems.

What package options are available for the TPS3513DR, and what are their key distinctions?

The TPS3513DR is offered exclusively in the SOIC-14 (D) package: 14-pin, 1.75 mm max height, RoHS-compliant, with NIPDAU lead finish and MSL Level-1 rating. It ships in 2500-unit tape-and-reel format (TPS3513DR) or same-spec variant TPS3513DR.A. Unlike the obsolete PDIP-14 (N) version, the TPS3513DR is surface-mount optimized for automated assembly and thermal performance in modern PSU layouts. Its pinout and electrical specs are identical across D-package variants.