Overview
The NCP6133, specifically the NCP61310091MNR2G, is a dual output 1/2/3 phase plus 1/0 phase dual edge modulated multiphase PWM controller designed by onsemi. This controller is optimized for Intel VR12 compatible CPUs and is suitable for both desktop and notebook applications. It combines advanced features such as true differential voltage sensing, differential inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning to provide accurately regulated power. The control system utilizes Dual-Edge pulse-width modulation (PWM) combined with DCR current sensing, ensuring the fastest initial response to dynamic load events and reduced system cost.
Key Specifications
| Parameter | Unit | Max | Typ | Min | Test Conditions |
|---|---|---|---|---|---|
| VCC | V | 6.5 | - | -0.3 | - |
| Switching Frequency Range | kHz | 1000 | - | 200 | - |
| ILIM Threshold Current (Core Rail) | A | 15/N | - | - | Rlim = 20 k, N = number of phases in PS0 mode |
| Maximum Timer for OCP shutdown | μs | 55 | - | - | - |
| VR_RDY, VR_RDYA Output Low Saturation Voltage | V | - | - | 0.3 | IVR_RDY(A) = 4 mA |
| Enable Delay Time | ms | 5.0 | - | - | Measure time from Enable transitioning HI to when DRON goes high, Vboot is not 0 V |
Key Features
- Meets Intel VR12/IMVP7 Specifications
- Current Mode Dual Edge Modulation for Fastest Initial Response to Transient Loading
- Dual High Performance Operational Error Amplifier
- One Digital Soft Start Ramp for Both Rails
- Dynamic Reference Injection
- Accurate Total Summing Current Amplifier
- DAC with Droop Feed-forward Injection
- Dual High Impedance Differential Voltage and Total Current Sense Amplifiers
- Phase-to-Phase Dynamic Current Balancing
- “Lossless” DCR Current Sensing for Current Balancing
- Summed Thermally Compensated Inductor Current Sensing for Droop
- True Differential Current Balancing Sense Amplifiers for Each Phase
- Adaptive Voltage Positioning (AVP)
- Switching Frequency Range of 200 kHz – 1.0 MHz
- Startup into Pre-Charged Loads While Avoiding False OVP
- Power Saving Phase Shedding
- Vin Feed Forward Ramp Slope
- Pin Programming for Internal SVID Parameters
- Over Voltage Protection (OVP) and Under Voltage Protection (UVP)
- Over Current Protection (OCP)
- Dual Power Good Output with Internal Delays
- Pb-Free and RoHS Compliant
Applications
- Desktop & Notebook Processors
- Server Processors and Memory Power
Q & A
- What is the NCP6133 optimized for?
The NCP6133 is optimized for Intel VR12 compatible CPUs.
- What are the key features of the NCP6133's control system?
The control system is based on Dual-Edge pulse-width modulation (PWM) combined with DCR current sensing, providing the fastest initial response to dynamic load events and reduced system cost.
- What is the switching frequency range of the NCP6133?
The switching frequency range is 200 kHz – 1.0 MHz.
- Does the NCP6133 support power saving features?
- What protection mechanisms does the NCP6133 have?
The NCP6133 includes Over Voltage Protection (OVP), Under Voltage Protection (UVP), and Over Current Protection (OCP).
- How does the NCP6133 handle startup into pre-charged loads?
The NCP6133 can startup into pre-charged loads while avoiding false OVP.
- What is the purpose of the Dynamic Reference Injection feature?
The Dynamic Reference Injection feature simplifies loop compensation by eliminating the need to compromise between closed-loop transient response and Dynamic VID performance.
- Is the NCP6133 environmentally friendly?
- What is the role of the dual high performance operational error amplifiers?
The dual high performance operational error amplifiers simplify the compensation of the system.
- How does the NCP6133 monitor current accurately?
The NCP6133 uses a Total Current Summing amplifier and true differential current balancing sense amplifiers for each phase to monitor current accurately.
