Overview
The NCP81109C, produced by onsemi, is a single-phase synchronous buck regulator designed for high-efficiency and compact-footprint power management solutions, particularly in computing applications. This device integrates power MOSFETs, enabling it to deliver up to 14 A of total DC output current with an adjustable output voltage controlled via an SVID interface. It operates at high switching frequencies of 500 kHz to 1.2 MHz, allowing the use of small-sized inductors and capacitors while maintaining high efficiency. The regulator meets Intel® Server Specifications and is packaged in a QFN48 6 x 6 mm package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 5 V to 20 V | V |
| Output Voltage | Adjustable with SVID Interface | V |
| Output Current | Up to 14 A TDC | A |
| Switching Frequency | 500 kHz to 1.2 MHz | kHz/MHz |
| Package Type | QFN48 6 x 6 mm | - |
| Operating Temperature Range | -10°C to 100°C | °C |
| High-Side MOSFET ON Resistance | 8.0 mΩ (VGS = 4.5 V, ID = 10 A) | mΩ |
| Low-Side MOSFET ON Resistance | 4.0 mΩ (VGS = 4.5 V, ID = 10 A) | mΩ |
Key Features
- Meets Intel® Server Specifications
- Integrated gate driver and power MOSFETs
- Adjustable output voltage with SVID interface
- Current-mode RPM control with feedforward from input power supply and output voltage
- Programmable SVID address and ICCMax
- Programmable DVID feed-forward to support fast DVID
- Output over-voltage and under-voltage protections
- External current limitation programming with inductor current sense
- Pb-free device
Applications
The NCP81109C is primarily used in server applications, providing a high-efficiency power management solution for new generation computing CPUs.
Q & A
- What is the input voltage range of the NCP81109C?
The input voltage range is from 5 V to 20 V.
- What is the maximum output current of the NCP81109C?
The device can deliver up to 14 A of total DC output current.
- What is the switching frequency range of the NCP81109C?
The switching frequency ranges from 500 kHz to 1.2 MHz.
- Does the NCP81109C meet any specific industry standards?
Yes, it meets Intel® Server Specifications.
- What type of package does the NCP81109C come in?
The device is packaged in a QFN48 6 x 6 mm package.
- What are the key protection features of the NCP81109C?
The device includes output over-voltage and under-voltage protections, as well as external current limitation programming.
- How does the SVID interface work on the NCP81109C?
The SVID interface allows for adjustable output voltage and includes programmable SVID address and ICCMax.
- What is the operating temperature range of the NCP81109C?
The operating temperature range is from -10°C to 100°C.
- Is the NCP81109C a Pb-free device?
Yes, the NCP81109C is a Pb-free device.
- What type of control does the NCP81109C use?
The device uses current-mode RPM control with feedforward from both input power supply and output voltage.
