Single Output Digital Multi-Phase Controller

IR3563A

October 1, 2013 | V3.04

1

FEATURES

 8-phase single output PWM Controller

 Intel® VR12 mode & Memory VR mode

 Overclocking & Gaming Mode

 PVI and SVI GPU VR modes

 Switching frequency from 200kHz to 2MHz

per phase

 IR Efficiency Shaping Features including Variable

Gate Drive, Dynamic Phase Control and

Automatic Power State Switching

 Programmable 1-phase operation for Light Loads

and Active Diode Emulation for Very Light Loads

 IR Adaptive Transient Algorithm (ATA) minimizes

output bulk capacitors and system cost

 Auto-Phase Detection with auto-compensation

 Fault Protection: OVP, UVP, OCP, OTP, CFP

 I2C/SMBus/PMBus system interface for telemetry

of Temperature, Voltage, Current & Power

 Multiple Time Programming (MTP) with integrated

charge pump for easy custom configuration

 Compatible with IR ATL and 3.3V tri-state Drivers

 +3.3V supply voltage; -40ºC to 85ºC ambient

operation

 Pb-Free, RoHS, 6x6mm 48-pin, 0.4mm pitch QFN

APPLICATIONS

 Intel® VR12 based systems

 Overclocked & Gaming platforms

DESCRIPTION

The IR3563A is a single-loop digital multi-phase

buck controller that controls up to 8 phases. The

IR3563A is fully Intel® VR12 compliant.

The IR3563A includes IR’s Efficiency Shaping

Technology to deliver exceptional efficiency at

minimum cost across the entire load range. IR

Variable Gate Drive optimizes the MOSFET gate

drive voltage based on real-

time load current. IR’s

Dynamic Phase Control adds/drops phases based

upon load current. The IR3563A can be configured

to enter 1-phase operation and active diode

emulation mode automatically or by command.

IR’s unique Adaptive Transient Algorithm (ATA),

based on proprietary non-linear digital PWM

algorithms, minimizes output bulk capacitors.

The I2C/PMBus interface can communicate with up

to 16 IR3563A-based VR loops. Device

configuration and fault parameters are easily defined

using the IR Digital Power Design Center (DPDC)

GUI and stored in on-chip MTP. MTP storage saves

pins and enables a small package size.

The IR3563A provides extensive OVP, UVP, OCP

and OTP fault protection and includes thermistor

based temperature sensing with VRHOT signal.

The IR3563A also includes numerous features like

register diagnostics for fast design cycles and

platform differentiation, simplifying VRD design and

enabling fastest time-to-

market with its “set-and-

forget” methodology.

ORDERING INFORMATION

Base Part

Number

Package Type

Standard Pack

Orderable

Part Number

Form

Quantity

IR3563A

QFN 6 mm x 6 mm

Tape and Reel

3000

IR3563AMxxyyTRP

1

IR3563A

QFN 6 mm x 6 mm

Tape and Reel

3000

IR3563AMTRPBF

IR3563A

QFN 6 mm x 6 mm

Tray

4900

IR3563AMTYPBF

Notes:

1. Customer Specific Configuration File, where xx = Customer ID and yy = Configuration File (Codes assigned by IR Marketing).