IR3538A Overview
The IR3536A and IR3538A are dual-loop digital multi-phase buck controllers. The IR3536A drive up to 6 phases and the IR3538A drives up to 8 phases. The IR3536A and IR3538A are fully Intel® VR12 and AMD® SVI/PVI pliant on both loops and provide a Vtt tracking function for DDR memory.
IR3538A Key Features
- 6-phase & 8-phase dual output PWM Controller
- Phases are flexibly assigned between Loops 1 & 2
- Intel® VR12, AMD® 3.4MHz SVI/PVI & Memory modes
- Overclocking & Gaming Mode with Vmax setting
- Switching frequency from 200kHz to 1.2MHz per phase
- IR Efficiency Shaping Features including Variable Gate Drive and Dynamic Phase Control
- Programmable 1-phase or 2-phase 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 auto-pensation
- Per-Loop Fault Protection: OVP, UVP, OCP, OTP, CFP