IR38164
IR 8
Features
OptiMOS™ iPOL
30A Single-voltage Synchronous Buck Regulator with SVID
Internal LDO allows single 16 V operation
Output Voltage Range: 0.5 V to 0.875*PVin
0.5% accurate Reference Voltage
Intel VR12.5 (Rev 1.5), SVID (Rev 1.7) and VR13 (Rev 1.1) compliant
Enhanced line/load regulation with Feedforward
Frequency programmable by PMBus™ up to 1.5 MHz
Enable input with Voltage Monitoring Capability
Remote Sense Amplifier with True Differential Voltage Sensing
Fast mode I2C and 400 kHz
PMBus™
interface for programming, sequencing and margining output voltage,
and for monitoring input voltage, output voltage, output current and temperature.
PMBus™
configurable fault thresholds for input UVLO, output OVP, OCP and thermal shutdown.
Thermally compensated pulse-by-pulse current limit and Hiccup Mode Over Current Protection
Dedicated output voltage sensing for power good indication and over-voltage protection which remains
active even when Enable is low.
Enhanced Pre-Bias Start up
Integrated MOSFET drivers and Bootstrap diode
Operating junction temp: -40
⁰
C<Tj<125
⁰
C
Thermal Shut Down
PMBus™
Programmable Power Good Output
Small Size 5 mmx 7 mm PQFN
Pb-Free (RoHS Compliant)
External resistor allows setting up to 16
PMBus™
addresses
Applications
Designed for Intel® single phase power rails requiring SVID communication such as VCCIO and VCMP on
platforms such as VR13HC, VR13 and VR12.5.
Servers and High End Desktop CPU VRs for non-core applications
Telecom & Datacom Applications
Distributed Point of Load Power Architectures
Product validation
Qualified for industrial applications according to the relevant tests of JEDEC47/20/22
Final Datasheet
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
page 1 of 64
V2.2
Feb 6 2019
Description
The IR38164 OptiMOS™ IPOL is an easy to use, fully integrated and highly efficient dc-dc regulator with Intel
SVID and I2C/PMBus™ interfaces. The on-chip PWM controller and co-packaged low duty cycle optimized
MOSFETs make the device a space-efficient solution, providing accurate power delivery for low output voltage
and high current applications that require an Intel SVID interface.
The IR38164 offers programmability of switching frequency, output voltage, and fault/warning thresholds and
fault responses while operating over a wide input range. Providing flexibility as well as system level security in
the event of fault conditions.
The switching frequency is programmable from 500 kHz to 1.5 MHz for an optimum solution.
The on-chip sensors and ADC along with the SVID, I2C and
PMBus™
make it easy to monitor and report input
voltage, output voltage, output current and temperature.
Final Datasheet
2 of 64
V2.2
Feb 6 2019
IR 8
OptiMOS™ iPOL
30A Single-voltage Synchronous Buck Regulator with SVID
Table of contents
Table of contents
Features ........................................................................................................................................ 1
Applications ................................................................................................................................... 1
Product validation .......................................................................................................................... 1
Description .................................................................................................................................... 2
Table of contents ............................................................................................................................ 3
1
2
3
4
5
6
7
8
8.1
8.2
8.3
9
10
11
12
13
Ordering information ............................................................................................................. 5
Functional block diagram........................................................................................................ 6
Typical application diagram .................................................................................................... 7
Pin descriptions ..................................................................................................................... 8
Absolute maximum ratings .................................................................................................... 10
Electrical specifications ......................................................................................................... 11
Electrical characteristics ........................................................................................................ 12
Typical efficiency and power loss curves .................................................................................. 18
PV
in
= V
in
= 12 V, VCC=5 V, F
s
= 600 kHz ................................................................................................... 18
PV
in
= V
in
= 12 V, VCC (Internal LDO), F
s
= 600 kHz.................................................................................. 19
PV
in
= V
in
= Vcc = 5 V, F
s
= 600 kHz ........................................................................................................... 20
Iout reporting curves (SVID) ................................................................................................... 21
Thermal Derating curves ........................................................................................................ 22
Typical application configurations .......................................................................................... 23
R
DS(ON)
of MOSFETs Over Temperature....................................................................................... 25
Typical operating characteristics (-40 °C to +125 °C) .................................................................. 26
14
Theory of operation ............................................................................................................... 28
14.1
Description ............................................................................................................................................ 28
14.2
Device Power-up and Initialization....................................................................................................... 28
14.3
I C and PMBUS™ Communication
........................................................................................................ 29
14.4
Modes for Setting Output Voltages ....................................................................................................... 30
14.5
Bus Voltage UVLO .................................................................................................................................. 33
14.6
Pre-Bias startup ..................................................................................................................................... 34
14.7
Soft-Start (Reference DAC ramp) .......................................................................................................... 34
14.8
Operating frequency ............................................................................................................................ 35
14.9
Shutdown .............................................................................................................................................. 35
14.10
Current Sensing, Telemetry and Over-Current Protection .................................................................. 36
14.11
Current reporting limitation at high operating temperature .............................................................. 39
Die temperature sensing, telemetry and thermal shutdown .............................................................. 40
14.12
14.13
Remote voltage sensing ........................................................................................................................ 40
14.14
Feed-forward ......................................................................................................................................... 41
Output voltage sensing, telemetry and faults ...................................................................................... 41
14.15
Power Good Output .............................................................................................................................. 41
14.16
14.17
Over-Voltage Protection (OVP) ............................................................................................................. 43
14.18
Minimum On-Time Considerations....................................................................................................... 44
Maximum Duty Ratio ............................................................................................................................. 45
14.19
14.20
Bootstrap Capacitor .............................................................................................................................. 45
Intel SVID interface ................................................................................................................................ 46
14.21
14.22
All Call support ...................................................................................................................................... 46
14.23
VR12.5 operation ................................................................................................................................... 46
Final Datasheet
3 of 64
V2.2
Feb 6 2019
IR 8
OptiMOS™ iPOL
30A Single-voltage Synchronous Buck Regulator with SVID
Table of contents
14.24
14.25
14.26
14.27
14.28
VR13 operation ...................................................................................................................................... 46
Set Work Point ....................................................................................................................................... 46
Dynamic VID slew rate ........................................................................................................................... 47
Loop compensation .............................................................................................................................. 47
Dynamic VID compensation .................................................................................................................. 47
15
I C and PMBus™ communication protocols
.............................................................................. 48
15.1
I2C Protocols ......................................................................................................................................... 48
15.2
SMBus/PMBus™ protocols
.................................................................................................................... 48
15.3
Supported PMBus™ commands
............................................................................................................ 51
16
PCB footprint and layout recommendations............................................................................. 55
16.1
Layout recommendations..................................................................................................................... 55
16.2
PCB Metal and Component Placement ................................................................................................ 56
16.3
PCB copper and solder resist ................................................................................................................ 56
16.4
PCB solder paste stencil ........................................................................................................................ 57
17
Marking and package information ........................................................................................... 59
17.1
Final production marking ..................................................................................................................... 59
17.2
Early production marking ..................................................................................................................... 59
17.3
Package dimensions ............................................................................................................................. 60
18
19
Environmental Qualifications ................................................................................................. 62
References ........................................................................................................................... 63
Final Datasheet
4 of 64
V2.2
Feb 6 2019
IR 8
OptiMOS™ iPOL
30A Single-voltage Synchronous Buck Regulator with SVID
Ordering information
1
Table 1
IR38164
Ordering information
Ordering Information
Package Type
QFN 5 mm x 7 mm
IR38164
Base Part Number
Standard Pack Form and Qty
Tape and Reel
4000
Orderable Part Number
IR38164MTRPbF
PBF
TR
M
Lead Free
Tape and Reel
Package Type
Figure 1
Package Top View
Final Datasheet
5 of 64
V2.2
Feb 6 2019
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
