DCDC Converter
OptiMOS™ IPOL
IR38163/363/165/365
Single-input Voltage, 15 A & 30 A
Buck Regulators with SVID
FEATURES
DESCRIPTION
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); VR13 (Rev 1.0) and SVID
(Rev 1.7) compliant
This family of OptiMOS™ IPOL devices offers easy-to-use,
fully integrated and highly efficient DC/DC regulators with
Intel SVID and I2C/PMBus™ interface. The on-chip PWM
controller and co-packaged low duty cycle optimized
MOSFETs make these devices a space-efficient solution,
providing accurate power delivery for low output voltage
and high current applications that require an Intel SVID
interface.
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 overvoltage protection which
remains active even when Enable is low.
These versatile devices offer programmability of switching
frequency, output voltage, and fault/warning thresholds
and fault responses while operating over a wide input
range. Thus, they offer flexibility as well as system level
security in event of fault conditions.
The switching frequency is programmable from 150 kHz to
1.5 MHz.
The on-chip sensors and ADC along with the SVID and
PMBus™ interfaces (IR18163 and IR38363) or SVID and I2C
interfaces (IR38165 and IR38365) make it easy to monitor
and report input voltage, output voltage, output current
and temperature.
Enhanced Pre-Bias Start up
Integrated MOSFET drivers and Bootstrap diode
Operating junction temp: -40oC<Tj<125oC
Thermal Shut Down
Post Package trimmed rising edge dead-time
PMBus™ Programmable Power Good Output
Small Size 5 mm x 7 mm PQFN
Pb-Free (RoHS Compliant)
External resistor allows setting up to 16 PMBus™
addresses
APPLICATIONS
Intel® VR13 and VR12.5 based systems
Servers and High End Desktop CPU VRs for non-
core applications
BASIC APPLICATION
For applications in which Pvin>14V, a 1 ohm resistor is required in series with the boot capacitor.
5.5V <Vin<16V
Optional placeholder for boot resistor.
Default should be 0 ohm
Boot
P1V8
PVin
Enable Vin
Vo
Vcc/
LDO_out
SW
Vsns
RS+
PGood
PGood
RS-
SV_CLK
SV_DIO
RSo
Fb
CPU
serial
bus
SV_ALERT
ADDR
Comp
LGnd
PGnd
Placeholder
for capacitor
Figure 1: Typical application circuit
1
Rev 3.6
Jun 7, 2019