Overview
The NCP81109C, produced by onsemi, is a single-phase synchronous buck regulator designed to provide high-efficiency and compact-footprint power management solutions. This device is particularly suited for new generation computing CPUs, offering integrated power MOSFETs and a high switching frequency. It supports adjustable output voltage with an SVID interface, making it compliant with Intel Server Specifications. The regulator delivers up to 14 A TDC output current and operates within a wide input voltage range of 5 V to 20 V.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Input Voltage Range | 5 to 20 | V |
| Output Current | Up to 14 A | A |
| Switching Frequency | 500 kHz to 1.2 MHz | Hz |
| Output Voltage | Adjustable with SVID interface | V |
| Package Type | QFN48, 6 x 6 mm, 0.4 mm Pitch | - |
| Operating Junction Temperature Range | -10 to 125 | °C |
| Thermal Resistance Junction to Board | 8.2 | °C/W |
| Thermal Resistance Junction to Ambient | 21.8 | °C/W |
| Power Dissipation at TA = 25°C | 4.59 | W |
Key Features
- Meets Intel Server Specifications
- Integrated gate driver and power MOSFETs
- Current-mode RPM control with feedforward from both input power supply and output voltage
- Programmable SVID address and ICCMax
- Programmable DVID feed-forward to support fast DVID
- Feedforward operation for input supply voltage and output voltage
- 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 efficient power management 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 TDC 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 support adjustable output voltage?
Yes, it supports adjustable output voltage with an SVID interface.
- What type of package does the NCP81109C come in?
The device is packaged in a QFN48, 6 x 6 mm, 0.4 mm Pitch package.
- What are the operating temperature ranges for the NCP81109C?
The operating junction temperature range is -10°C to 125°C, and the operating ambient temperature range is -10°C to 100°C.
- Does the NCP81109C have built-in protection features?
Yes, it includes output over-voltage and under-voltage protections, as well as external current limitation programming.
- Is the NCP81109C Pb-free?
Yes, the device is Pb-free.
- What is the typical application for the NCP81109C?
The device is typically used in server applications.
- Does the NCP81109C meet Intel Server Specifications?
Yes, it meets Intel Server Specifications.
