Overview
The NCP81111MNTXG is a high-performance digital single-output three-phase VR12.5-6 compatible buck controller produced by onsemi. This controller is optimized to operate at frequencies up to 5 MHz, making it suitable for Intel CPU applications. It can also function as a general-purpose I2C controlled multiphase voltage regulator. The NCP81111MNTXG is designed to support the NCP81163 digital phase doubler IC, which can expand its capability to 6 phases for high current handling.
Key Specifications
| Parameter | Value |
|---|---|
| Topology | Step-Down |
| Phases | 1/2/3 |
| Control Mode | Voltage Mode |
| VCC Min (V) | 4.75 |
| VCC Max (V) | 5.25 |
| fSW Typ (kHz) | 1000 - 5000 |
| Package Type | QFN-32 |
| Operating Temperature (°C) | -40 to 125 |
Key Features
- Meets Intel®’s VR12.5 Specifications
- On Board EEPROM for User Configuration
- High Performance Digital Architecture
- Dynamic Reference Injection
- Fully Differential Voltage Current Sense Amplifiers
- “Lossless” DCR Current Sensing for Current Balancing
- Thermally Compensated Inductor Current Sensing for Droop
- User Adjustable Internal Compensation
Applications
- Multi-phase voltage regulator for Intel processors
- Desktop PC
- Notebook PC
- Servers
- General Purpose I2C Controlled Multiphase Regulators
Q & A
- What is the NCP81111MNTXG optimized for?
The NCP81111MNTXG is optimized to operate at frequencies up to 5 MHz for Intel CPU applications.
- Can the NCP81111MNTXG be used as a general-purpose regulator?
Yes, it can also function as a general-purpose I2C controlled multiphase voltage regulator.
- What is the maximum number of phases supported by the NCP81111MNTXG with additional components?
With the NCP81163 digital phase doubler IC, it can support up to 6 phases for high current handling.
- What are the key sensing features of the NCP81111MNTXG?
The controller includes true differential voltage sensing, differential current sensing, digital input voltage feed-forward, and DAC feed forward.
- What is the package type of the NCP81111MNTXG?
The package type is QFN-32.
- What are the typical switching frequencies of the NCP81111MNTXG?
The typical switching frequencies range from 1000 kHz to 5000 kHz.
- Does the NCP81111MNTXG support user configuration?
Yes, it has an on-board EEPROM for user configuration.
- What are some of the applications of the NCP81111MNTXG?
It is used in desktop PCs, notebook PCs, servers, and as a general-purpose I2C controlled multiphase regulator.
- Does the NCP81111MNTXG meet Intel’s VR12.5 specifications?
Yes, it meets Intel’s VR12.5 specifications.
- What is the operating temperature range of the NCP81111MNTXG?
The operating temperature range is -40°C to 125°C.
