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IR35203MTRPBF

Name: IR35203MTRPBF
Rating: 4.7 (12 reviews)

IC CTRLR PWM MULTIPHASE 48QFN

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包 QFN EP-48
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規格

Package	Tape & Reel (TR),Bulk
ProductStatus	Obsolete
Applications	Multiphase Controller
Voltage-Supply	3.3V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	48-VFQFN Exposed Pad

概述

Description

IR35203MTRPBF is an IR/Infineon multi-phase buck regulator controller IC used to power CPU/memory VRMs. It provides PWM control for multiple phases to regulate a DC output fed to external MOSFETs and a sense network.
Key points:
- Multi-phase control: suitable for interleaved multi-phase buck converters.
- PWM and current-mode control with gate drive outputs to drive external MOSFETs.
- Features: programmable switching frequency, soft-start, enable/shutdown, and protection functions (fault, undervoltage, overcurrent/short-circuit, etc.).
- Feedback: uses output voltage feedback to regulate the target voltage.
- Packaging: MTRPBF indicates Pb-free, tape-and-reel packaging.
Typical use:
- Power delivery for CPU cores, GPUs, memory, and other high-current VRMs in desktops, workstations, and servers.

Features

Here are the key features of IR35203MTRPBF (VRM controller):
- Three-phase multiphase PWM controller for interleaved CPU/GPU voltage regulators.
- Six gate outputs (HOx/LOx) for three half-bridges.
- Internal oscillator with programmable switching frequency (typically ~200 kHz–600 kHz).
- Per-phase cycle-by-cycle current limit with phase balancing for reduced ripple.
- Soft-start, enable/disable control, and adjustable deadtime.
- External feedback via error amplifier and reference for voltage regulation.
- Protection: overcurrent, over/under voltage (OVP/UVP), and thermal shutdown.
- Phase interleaving features with adjustable phase skew for optimal ripple reduction.
- Fault reporting with latching/diagnostics.
- Pb-free MTRPBF packaging (tape and reel); wide operating temperature range (typical -40°C to 125°C).
Note: exact electrical specifications (fsw ranges, reference voltage, etc.) are in the latest datasheet.

Package

Package type: MTRP (Pb-free).

Pinout

Pin count: 8 pins (MSOP-8, Pb-free package).
Function: Multi-phase PWM controller and gate driver for VRM/buck regulators. It generates PWM signals to drive the high-side and low-side MOSFETs across multiple phases (with features such as enable, soft-start, UVLO/overcurrent protection).

Manufacturer

- Manufacturer: International Rectifier (IR), a semiconductor company now part of Infineon Technologies.
- Company type: A leading semiconductor maker specializing in power management devices—PWM/controllers, MOSFETs, drivers and other power ICs used in VRMs and power supplies.

Application

IR35203MTRPBF is a 3-phase, high-current multiphase buck regulator controller. Typical applications:
- CPU/GPU core VRMs in desktops/servers/graphics cards
- High-efficiency DC-DC power stages on motherboards
- Data-center power modules
- Telecom/network equipment requiring low-voltage rails
- Other low-voltage, high-current power delivery in embedded/high-performance systems

Equivalent

IR35203MTRPBF is a 3‑phase multiphase buck controller; there isn’t an exact drop‑in cross. Comparable alternatives from other vendors include:
- TI: UCD9020A/UCD9024 (PMBus multicell VRM controllers)
- Richtek: RT8250/RT8253 (3‑phase buck controllers)
- Renesas: ISL6820 family (multi‑phase VRM controllers)
- Onsemi: NCP81239/NCP81240
For an exact substitute, check Infineon’s cross-reference database or distributor cross‑references.