NCP81031MNTWG

Frequency - Switching:	200kHz
Base Part Number:	NCP81031
Supplier Device Package:	16-QFN (3x3)
Package / Case:	16-VFQFN Exposed Pad
Operating Temperature:	0°C ~ 85°C (TA)
Control Features:	Enable, Frequency Control, Power Good
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	95%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 13.2 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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What is NCP81031MNTWG?

NCP81031MNTWG is a type of Programmable Multi-Level DC-DC Switching Controller. It is a high performance, low power, adjustable current source regulator (ACS) for providing low-noise and low-ripple voltage regulation in a wide variety of applications. The NCP81031MNTWG also features a high accuracy current regulation and an adjustable output voltage range from 0.6V to 1.5V.

Applications of NCP81031MNTWG

NCP81031MNTWG can be used for a variety of applications, including those involving portable computing, industrial control, and telecommunications. It is ideal for applications where high power and low output noise is required, such as multi-level DC-DC converters, DC/DC converters and adaptor/charger designs. The NCP81031MNTWG can also be used in package-attenuator applications, where it can provide high attenuation while maintaining low noise levels.

Features of NCP81031MNTWG

The NCP81031MNTWG features a wide input voltage range of 6V to 36V, automatic or manual dual-level operation, programmable delay times for each output voltage level, short-circuit protection, and over-voltage protection. The NCP81031MNTWG also offers internal EMI/RFI filters, as well as built-in digital isolators, which can provide high levels of isolation between input and output ports.

Working Principle of NCP81031MNTWG

The NCP81031MNTWG is a DC-DC switching controller that is configured for high-efficiency switching at high frequencies. It uses multiple switching stages with high-bandwidth and low transition impedance to achieve fast transients and high-frequency operation. The output voltage is adjusted using a proprietary implementation of the adjustable current sense technique. This implementation takes advantage of the lower on-resistance capabilities of MOSFETs and optimally manages the switching waveforms to minimise the ripple currents.The NCP81031MNTWG can be configured to operate in either a dual-level or a single-level PWM mode. In dual-level mode, the two output sections are both switched, with a delay between the two switching events. This delay is pre-programmed in order to optimise the waveforms and minimise the output ripple. In single-level mode, only one of the sections is switched, enabling the output voltage to be set to a fixed or variable level. The current in the DC-DC switching stage is regulated according to a program-defined voltage reference, helping to ensure smooth and low noise output voltage waveforms.

Advantages of NCP81031MNTWG

The NCP81031MNTWG offers many advantages compared to other DC-DC controllers, such as low-noise and low-ripple output voltages, wide input voltage range, programmable operating parameters, built-in EMI/RFI filters, integrated digital isolators, and short-circuit and over-voltage protection. In addition, its adjustable current sense technique helps to optimise the waveforms and minimise the ripple currents, making it an ideal choice for applications where high power and low output noise is required.

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