Infineon Technologies IR3513MTRPBF

Overview

IR3513MTRPBF from Infineon Technologies is a single-phase XPHASE3™ POL (Point-of-Load) control IC with integrated 7V/2A high-side and 4A sink low-side gate drivers, differential remote sense amplifier (100 kΩ input impedance), and programmable 250 kHz–1.5 MHz per-phase switching frequency via ROSC resistor. It supports stand-alone operation or daisy-chained multi-phase scaling up to X phases, delivering 0.8 V–5.1 V output with ±0.5% system set-point accuracy. Used in server VRMs and telecom power modules for CPU/GPU core rails.

For engineers reviewing the IR3513MTRPBF datasheet, IR3513MTRPBF pinout, IR3513MTRPBF application, or IR3513MTRPBF equivalent, key selection considerations include its programmable current limit during soft-start/hiccup, open remote sense line detection, over-voltage protection signaling to phase ICs, and thermally enhanced 32-lead 5×5 mm MLPQ package with integrated bootstrap PFET.

Technical Context

The IR3513 implements a digitally synchronized analog PWM controller architecture with daisy-chain timing distribution: CLKOUT outputs aggregate phase frequency (PHSOUT × number of phases), while PHSIN/PHSOUT enable precise inter-IC phase alignment. Its error amplifier features 100–120 dB DC gain and 20–40 MHz bandwidth, supporting fast transient response in high-current digital load applications.

Current sensing uses differential CSIN+/CSIN− inputs with ±40 mV offset and 0.5–1.75 mA/V transconductance; over-current protection employs OCSET bias current (605 µA/Rosc) and programmable delay counters (1024–4096 cycles). Remote sense amplifier provides 3–9 MHz unity-gain bandwidth and detects open sense lines via VOSEN+ threshold (90% VCCL) and VOSEN− comparator (0.4 V).

Key Specifications

Pinout & Package

IR3513MTRPBF is housed in a thermally enhanced 32-lead MLPQ package (5 mm × 5 mm body, 0.5 mm pitch), with exposed thermal pad for PCB heat dissipation and LGND pins (6, 24) tied to substrate for low-inductance grounding.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar POL control applications.

Compared with IR3513MTRPBF, IR3513ZMTRPBF delivers identical functionality with upgraded thermal robustness and tighter UVLO hysteresis, while ISL6367IRZ trades analog timing simplicity for digital configurability and native PMBus support - making it better suited for systems requiring runtime reconfiguration.

Availability

IR3513MTRPBF is available at Aetrix Electronics and suitable for server VRMs, telecom power modules, industrial FPGA supplies, and network switch ASIC rails requiring stable component supply and legacy design continuity.

Supply support for IR3513MTRPBF 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-efficiency DC-DC conversion and silicon carbide solutions.

The XPHASE3™ product line delivers scalable, analog-based POL controllers optimized for high-current, low-voltage digital loads - designed to simplify multi-phase implementation while maintaining analog loop stability and fast transient response.

FAQ

What is the purpose of the ROSC/OVP pin?

The ROSC/OVP pin serves dual functions: a resistor to LGND sets the PHSOUT switching frequency (250 kHz–1.5 MHz), and its voltage rises above 1.6 V during over-voltage events to signal fault condition to the system. During normal operation, it maintains 0.6 V, enabling simultaneous oscillator programming and hardware OVP flagging without extra pins or components.

How does the IR3513 handle remote sense line disconnection?

The IR3513 detects open remote sense lines using two independent comparators: VOSEN+ triggers if voltage falls below 90% of VCCL, and VOSEN− triggers if voltage exceeds 0.4 V. Upon detection, the controller disables PWM output and asserts PG low after a brief delay, preventing unregulated output voltage drift and protecting downstream loads from undervoltage conditions.

Can the IR3513 operate as a standalone single-phase controller?

Yes - the IR3513 is fully functional as a standalone single-phase controller with integrated gate drivers, current sensing, remote sensing, and protection features. No external phase ICs are required; it only needs external MOSFETs, output capacitors, and the ROSC resistor to configure switching frequency and OCSET resistor for current limiting.

What is the role of the IIN pin in multi-phase configurations?

The IIN pin aggregates average current signals from all active Phase ICs in a daisy-chained system and serves as the master's current summation node. It also carries over-voltage fault signals from the master to slave Phase ICs, enabling coordinated shutdown. This eliminates need for external current-summing op-amps or digital communication buses in analog multi-phase designs.