NCP81243MNTXG Description
The NCP81243MNTXG is a multi-phase buck solution with user configurations of 3/2/1+ 2/1 phases with the option to perform 4+1. It is optimized for Intel IMVP8 compatible CPUs. To deliver precise regulated power for desktop applications, the controller includes true differential voltage detection, differential inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning. Based on Dual-Edge pulse-width modulation (PWM) and DCR current sensing, the control system offers the quickest initial response to dynamic load events at the lowest system cost.
NCP81243MNTXG Features
Power Saving Phase Shedding
Vin Feed Forward Ramp Slope
Over Current Protection (OCP)
Meets Intel's IMVP8 Specification
Adaptive Voltage Positioning (AVP)
One Digital Soft Start Ramp for Both Rails
Phase-to-Phase Dynamic Current Balancing
Dual Power Good Output with Internal Delays
Switching Frequency Range of 200KHz – 1.5MHz
Dual High Performance Operational Error Amplifier
Dynamic Reference Injection? (Patent #US07057381)
“Lossless” DCR Current Sensing for Current Balancing
DAC with Droop Feed-forward Injection(Patent Pending)
Startup into Pre-Charged Loads while avoiding False OVP
Summed Compensated Inductor Current Sensing for Droop
Over Voltage Protection (OVP) & Under Voltage Protection (UVP)
Accurate Total Summing Current Amplifier(Patent #US006683441)
True Differential Current Balancing Sense Amplifiers for Each Phase
Dual High Impedance Differential Voltage and Total Current Sense Amplifiers
Current Mode Dual Edge Modulation for Fast Initial Response to Transient Loading
NCP81243MNTXG Applications
Automotive
Personal electronics
Communications equipment
