Infineon Technologies IP1206TRPBF

Overview

iP1206TRPBF from International Rectifier is a synchronous buck multiphase power block integrating PWM control, dual high/low-side MOSFETs, gate drivers, and passive components in a single LGA package. It delivers up to 30A total output current (15A per phase), supports 0.8V–5.5V output voltage with ±1% accuracy, operates up to 600kHz, and features lossless current limiting and pre-bias start-up. It is used in microprocessor power supplies requiring tight regulation and fast transient response.

For engineers reviewing the iP1206TRPBF datasheet, iP1206TRPBF pinout, iP1206TRPBF application, or iP1206TRPBF equivalent, key selection criteria include dual-phase interleaved operation, integrated VCH/VCL bias rails, external synchronization capability, output voltage tracking/sequencing, and thermal shutdown with hiccup mode.

Technical Context

The iP1206TRPBF implements a two-phase interleaved synchronous buck architecture with 180° phase shift between outputs, reducing input RMS current and minimizing required input capacitance. Its internal PWM comparators use ramp-based modulation synchronized to an oscillator whose frequency is set via the RT pin (200–600kHz).

It integrates dual error amplifiers with independent compensation (CC1/CC2), dedicated overvoltage protection sense pins (FB1S/FB2S), and analog ground (AGND) isolated from power ground (PGND) to maintain signal integrity. The VO3 internal regulator (7.7V nominal) supplies VCH, enabling robust high-side driver operation.

Key Specifications

Pinout & Package

The iP1206TRPBF uses a 36-pin LGA (Land Grid Array) package with exposed thermal pad, optimized for low-inductance layout and efficient heat transfer to PCB. Pin numbering follows standard top-down view with pin 1 at top-left corner (CC2).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multiphase synchronous buck power block applications.

Compared with ISL95812IRZ and TPS53679RSLR, the iP1206TRPBF offers superior integration density and built-in sequencing/tracking for dual-rail ASICs, but trades off scalability beyond 30A and programmable control modes found in newer controllers.

Availability

iP1206TRPBF is available at Aetrix Electronics and suitable for microprocessor power supplies, dual-voltage ASIC systems, and distributed point-of-load converters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for iP1206TRPBF 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

International Rectifier (acquired by Infineon in 2015) was a pioneer in power semiconductor integration, specializing in high-efficiency power conversion solutions for computing, telecom, and industrial markets.

The iP1206 belongs to the iPOWIR® family of integrated power blocks, designed specifically to replace multi-component synchronous buck solutions with single-package alternatives that optimize board space, thermal performance, and design cycle time for mid-power POL applications.

FAQ

What is the function of the VO3 pin?

The VO3 pin outputs a regulated ~7.7V supply derived internally from VCC, dedicated to powering the high-side gate drivers (VCH). It must be decoupled with a 1.0µF ceramic capacitor to PGND. This eliminates the need for an external bootstrap diode and capacitor, improving reliability and reducing component count in the gate drive path.

How does the iP1206TRPBF implement lossless current limiting?

It senses current through the R_DS(on) of its integrated high- and low-side MOSFETs rather than using external shunt resistors. The OC1 and OC2 pins set the overcurrent threshold voltage, which is compared against the sensed FET voltage drop. This method avoids power loss and board area associated with precision shunts while maintaining ±10% current limit accuracy.

Can the iP1206TRPBF operate with only one output enabled?

Yes - either output can be disabled independently using its respective SS1 or SS2 pin pulled low. When one channel is disabled, the remaining channel operates at full 30A capability with doubled duty cycle range. The interleaved oscillator automatically adjusts to single-phase mode, and PGOOD status reflects only the active output.

What is the recommended layout practice for AGND and PGND separation?

AGND and PGND must be separated on the PCB and joined at a single point near the device's thermal pad. AGND routes analog signals (FB, CC, VREF, TRACK); PGND carries high di/dt switching currents (VIN, VSW, PGND pins). A solid copper pour under the LGA package connects both grounds to the thermal pad, ensuring low-impedance heat transfer while preserving noise isolation for feedback paths.