Overview
The NCP4200MNR2G, produced by onsemi, is an integrated power control IC that combines a highly efficient, multi-phase, synchronous buck switching regulator controller with an I2C interface. This device is designed to optimize system performance and provide detailed feedback to the system. It supports digital programming of key system parameters, such as voltage offset, load-line, and phase balance, through its I2C interface. The NCP4200 is particularly suited for applications requiring precise voltage regulation, such as CPU Vcore power supplies in desktop PCs, gaming systems, and servers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.7 to 24 | V |
| Output Voltage Range | 0.375 to 1.8 | V |
| Switching Frequency | 220 kHz to 6 MHz | Hz |
| Number of Phases | 2, 3, or 4 | |
| Operating Temperature Range | -40 to +125 | °C |
| Package Type | 40-QFN (6x6) | |
| Maximum Quiescent Current | 25 | mA |
| UVLO Threshold Voltage (Rising) | 6.5 | V |
| UVLO Threshold Voltage (Falling) | 4.1 | V |
Key Features
- Selectable 2-, 3-, or 4-phase operation at up to 1.5 MHz per phase.
- I2C interface for digital programmability of set points and read-back of monitored values.
- Logic-level PWM outputs for interface to external high power drivers.
- Fast-enhanced PWM for excellent load transient performance.
- Active current balancing between all output phases.
- Built-in power-good/crowbar blanking supports on-the-fly (OTF) VID code changes.
- Digitally programmable 0.375 V to 1.6 V output supports both VR11 and VR11.1 specifications.
- Programmable short-circuit protection with programmable latchoff delay.
- Supports PSI – Power Saving Mode during light loads.
Applications
The NCP4200MNR2G is primarily used in applications requiring high-efficiency and precise voltage regulation, such as:
- Desktop PC power supplies for VRM modules.
- Gaming systems.
- Server power supplies.
Q & A
- What is the input voltage range of the NCP4200MNR2G?
The input voltage range is from 1.7 V to 24 V.
- What is the output voltage range of the NCP4200MNR2G?
The output voltage range is from 0.375 V to 1.8 V).
- How many phases can the NCP4200MNR2G operate in?
The device can operate in 2, 3, or 4 phases).
- What is the operating temperature range of the NCP4200MNR2G?
The operating temperature range is from -40°C to +125°C).
- What type of package does the NCP4200MNR2G come in?
The device comes in a 40-QFN (6x6) package).
- Does the NCP4200MNR2G support I2C interface?
Yes, it supports an I2C interface for digital programming and monitoring).
- What is the maximum quiescent current of the NCP4200MNR2G?
The maximum quiescent current is 25 mA).
- Does the NCP4200MNR2G support power saving mode?
Yes, it supports PSI – Power Saving Mode during light loads).
- How is the switching frequency set on the NCP4200MNR2G?
The switching frequency is set with an external resistor connected from the RT pin to ground).
- What is the purpose of the internal VID DAC in the NCP4200MNR2G?
The internal VID DAC reads a Voltage Identification (VID) code directly from the processor to set the output voltage).
