IR35203 Datasheet, PDF (1/56 Pages) International Rectifier – 6+1 Dual Output Digital Multi-Phase Controller

6+1 Dual Output Digital Multi-Phase Controller
IR35203
FEATURES
 Ultra Low Quiescent Power Dual output 6+1 phase
PWM Controller
 Intel^® VR12 Rev 1.7, VR12.5 Rev 1.5, IMVP8 Rev
1.2, and Memory VR modes
 Switching frequency from 194KHz to 2MHz per
phase in 56 steps
 IR Efficiency Shaping Features including Dynamic
Phase Control and Automatic Power State Switching
 Programmable 1-phase or 2-phase operation for
Light Loads and Active Diode Emulation for very
Light Loads
 IR Adaptive Transient Algorithm (ATA) on both loops
minimizes output bulk capacitors and system cost
 Auto-Phase Detection with PID Coefficient auto-
scaling
 Fault Protection: OVP, UVP, OCP, OTP, CAT_FLT
 I2C/SMBus/PMBus system interface for reporting of
Temperature, Voltage, Current & Power telemetry for
both loops
 Multiple Time Programming (MTP) with integrated
charge pump for easy non-volatile programming
 Compatible with 3.3V tri-state drivers
 +3.3V supply voltage; -40^oC to 85^oC ambient
operation; -40^oC to 125^oC junction
 Pb-Free, RoHS, 6x6mm 48-pin, 0.4mm pitch QFN
APPLICATIONS
 Intel® VR12, VR12.5 and IMVP8 (overclocking only)
based systems
 Servers and High End Desktop CPU VRs
 High Performance Graphics Processors, Memory VR
DESCRIPTION
The IR35203 is a dual-loop digital multi-phase
buck controller designed for CPU voltage
regulation, and is fully compliant with Intel^® VR12
Rev 1.7, VR12.5 Rev 1.5, IMVP8² Rev 1.2
specifications.
The IR35203 includes IR’s Efficiency Shaping
Technology to deliver exceptional efficiency at
minimum cost across the entire load range. IR’s
Dynamic Phase Control adds/drops phases based
upon load current. The IR35203 can be configured
to enter 1 or 2-phase PS1 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.
IR35203 has 127 possible address values for both
the PMBus and I2C bus interfaces. The device
configuration can be easily defined using the IR
PowIRCenter GUI, and is stored in the on-chip
Non-Volatile Memory (NVM). This reduces external
components and minimizes the package size.
The IR35203 provides extensive OVP, UVP, OCP,
OTP & CAT_FLT fault protection, and includes
thermistor based temperature sensing or per
phase temperature reporting when using the IR
powIRstage. The controller is designed to work
with either Rdson current sense PowIRstages or
with DCR current sense.
The IR35203 also includes numerous VR design
simplifying and differentiating features, like register
diagnostics, which enable fast time-to-market.
ORDERING INFORMATION
Base Part
Number
IR35203
Package Type
48-pin, QFN 6 mm x 6 mm
Standard Pack
Form
Quantity
Tape and Reel
3000
Orderable
Part Number
IR35203MxxyyTRP¹
IR35203
48-pin, QFN 6 mm x 6 mm
Tape and Reel
3000
IR35203MTRPBF
IR35203
48-pin, QFN 6 mm x 6 mm
Tray
4900
IR35203MTYPBF
Notes:
1.
2.
Customer Specific Configuration File, where xx = Customer ID and yy = Configuration File (Codes assigned by IR Marketing).
IR35203 is not intended for application where ultra low power PS4 shutdown functionality is required.
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February 8, 2016 | V1.5