IR3086APBF Datasheet, PDF (1/33 Pages) International Rectifier – XPHASE PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT

DATA SHEET NO. PD94711
IR3086APbF
XPHASE^TM PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT
DESCRIPTION
The IR3086APbF Phase IC combined with an IR XPhase^TM Control IC provides a full featured and flexible
way to implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC
provides overall system control and interfaces with any number of “Phase” ICs which each drive and
monitor a single phase of a multiphase converter. The XPhase^TM architecture results in a power supply that
is smaller, less expensive, and easier to design while providing higher efficiency than conventional
approaches.
FEATURES
• 2.5A Average Gate Drive Current
• Loss-Less Inductor Current Sense
• Internal Inductor DCR Temperature Compensation
• Programmable Phase Delay
• Programmable Feed-Forward Voltage Mode PWM Ramp
• Sub 100ns Minimum Pulse Width supports 1MHz per-phase operation
• Current Sense Amplifier drives a single wire Average Current Share Bus
• Current Share Amplifier reduces PWM Ramp slope to ensure sharing between phases
• Body Braking^TM disables Synchronous MOSFET for improved transient response and prevents negative
output voltage at converter turn-off
• OVP comparator with 150ns response
• Phase Fault Detection
• Programmable Phase Over-Temperature Detection
• Small thermally enhanced 20L MLPQ package
PACKAGE PINOUT
Page 1 of 33
1 _RMPIN+
VCCH ¹⁵
2 _{RMPIN- IR3086APbF GATEH} 14
3 _{HOTSET PHASE IC PGND} 13
4 _VRHOT
GATEL ¹²
5
ISHARE
11
VCCL
1/28/2005