Infineon Technologies IR3527MTRPBF

Overview

IR3527MTRPBF from Infineon Technologies is a dual-output, 3-phase digital PWM controller for CPU/GPU VR applications, supporting up to 6-phase operation via phase interleaving, with integrated PMBus 1.3 interface, 0.5% voltage regulation accuracy, and programmable switching frequency up to 2 MHz.

For engineers reviewing the IR3527MTRPBF datasheet, IR3527MTRPBF pinout, IR3527MTRPBF application, or IR3527MTRPBF equivalent, key selection criteria include multi-phase synchronization capability, real-time telemetry reporting (VOUT, IOUT, temperature), adaptive voltage positioning (AVP), and compatibility with Intel VR13/VR13.0 specifications.

Technical Context

The IR3527MTRPBF implements a digital state-machine-based control architecture with dual independent control loops-one for each output-supporting both single- and dual-rail configurations. It integrates a 12-bit ADC for voltage/current/temperature sensing and supports dynamic phase shedding based on load conditions.

Its PMBus 1.3 compliance enables full configuration, monitoring, and fault logging via SMBus-compatible host controllers. The device uses a proprietary digital compensator with programmable gain, pole/zero placement, and loop response tuning without external components.

Key Specifications

Pinout & Package

IR3527MTRPBF is housed in a 24-pin MLPQ (4 mm × 4 mm, 0.5 mm pitch) thermally enhanced package with exposed thermal pad for high-power CPU VR applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output digital VR controller applications.

Compared with IR35204MTRPBF and TPS53689RTAT, the IR3527MTRPBF uniquely delivers dual independent digital control loops in a single 24-pin package, enabling space-constrained dual-rail VR designs with full PMBus observability and adaptive loop tuning-critical for modern CPU/GPU power architectures.

Availability

IR3527MTRPBF is available at Aetrix Electronics and suitable for server motherboard design, AI accelerator power subsystems, and high-end desktop platform development requiring stable component supply and long-term lifecycle support.

Supply support for IR3527MTRPBF 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 digital power controller innovation since 2008.

The IR35xxx series was developed specifically for high-efficiency, digitally controlled voltage regulator modules targeting next-generation computing platforms requiring precision, telemetry, and configurability.

FAQ

What is the maximum supported phase count per output on the IR3527MTRPBF?

The IR3527MTRPBF supports up to three phases per output channel, enabling a total of six interleaved phases across its dual outputs. Each phase output (PHASE1–PHASE6) drives an external high-side MOSFET gate, and phase assignment is fully configurable via PMBus commands. This architecture allows flexible topologies such as 3+3, 2+2, or 1+1 phase distribution depending on rail current requirements.

Does the IR3527MTRPBF require external compensation components?

No, the IR3527MTRPBF implements a fully programmable digital PID compensator stored in on-chip nonvolatile memory. All loop parameters-including proportional, integral, and derivative gains, plus pole/zero locations-are configured via PMBus and retained after power cycle. This eliminates external RC networks and enables dynamic loop adaptation without hardware changes.

Can the IR3527MTRPBF operate in single-rail mode?

Yes, the IR3527MTRPBF supports single-rail operation by configuring one output channel as active and disabling the other via PMBus command WRITE_VOUT_COMMAND. The unused channel enters low-power standby, and all six phase drivers can be assigned to the active rail for up to 6-phase operation-ideal for high-current single-output applications like GPU core VR.

What thermal management features does the IR3527MTRPBF provide?

The IR3527MTRPBF integrates a dedicated TEMP_MON pin for external NTC thermistor connection and monitors internal junction temperature using an on-die diode. It supports programmable thermal warning and shutdown thresholds, automatic derating of phase count above defined temperatures, and real-time thermal telemetry reporting via PMBus READ_TEMPERATURE command with ±1°C accuracy.