Overview
The NCP303151MNTWG, produced by onsemi, is an integrated driver and MOSFET module designed for high-current DC-DC buck power conversion applications. This module combines a MOSFET driver, high-side MOSFET, and low-side MOSFET into a single package, significantly reducing package parasitics and board space compared to discrete component solutions. It is optimized for high-performance and reliability, making it suitable for various power management needs in modern electronics.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | 5.0 | 5.5 | V | |
| Input Voltage | VIN | 25 | 30 | V | ||
| Breakdown Voltage MOSFETs | 30 | 30 | V | |||
| Maximum Average Current | 50 | A | ||||
| Switching Frequency | 1 | MHz | ||||
| UVLO Threshold | VUVLO | VCC rising | 3.8 | 4.1 | 4.2 | V |
| UVLO Hysteresis | UVLO_Hyst | 0.17 | V | |||
| Over-Current Limit | ILIM | 74 | 80 | 86 | A | |
| OCP Hysteresis | ILIM_HYS | 8 | A | |||
| Package Type | 5x6 PQFN |
Key Features
- High-performance, universal footprint, copper-clip 5 mm x 6 mm PQFN package
- Capable of switching at frequencies up to 1 MHz
- Compatible with 3.3 V or 5 V PWM input and responds properly to 3-level PWM inputs
- Precise current monitoring with an internal current monitor output
- Option for zero cross detection with 3-level PWM
- Internal bootstrap diode and catastrophic fault detection including thermal flag (OTP) for over-temperature condition, over-current protection (OCP), and under-voltage lockout (UVLO) on VCC and PVCC
- Supports Intel® Power State 4 applications
Applications
The NCP303151MNTWG is suitable for a variety of high-current DC-DC buck power conversion applications, including:
- Desktop and notebook microprocessors
- Graphic cards
- Routers and switches
Q & A
- What is the maximum average current the NCP303151MNTWG can handle?
The NCP303151MNTWG is capable of handling average currents up to 50 A. - What is the switching frequency range of the NCP303151MNTWG?
The module can switch at frequencies up to 1 MHz. - What are the UVLO threshold and hysteresis values for the NCP303151MNTWG?
The UVLO threshold is between 3.8 V and 4.2 V, with a hysteresis of 0.17 V. - Does the NCP303151MNTWG support 3-level PWM inputs?
Yes, it responds properly to 3-level PWM inputs and includes options for zero cross detection. - What are the key protection features of the NCP303151MNTWG?
The module includes over-temperature protection (OTP), over-current protection (OCP), and under-voltage lockout (UVLO) on VCC and PVCC. - What is the package type of the NCP303151MNTWG?
The package type is a 5x6 PQFN. - How does the NCP303151MNTWG handle fault conditions?
The module includes a fault reporting pin and can detect over-current and over-temperature conditions, with the fault flag being cleared once the temperature falls below 125°C. - What are the typical applications for the NCP303151MNTWG?
It is used in desktop and notebook microprocessors, graphic cards, and routers and switches. - How does the zero cross detection function work in the NCP303151MNTWG?
The zero cross detection function is enabled via the ZCD_EN pin and allows the module to monitor inductor current and turn off the low-side MOSFET when the current exceeds the ZCD threshold. - What is the role of the bootstrap diode in the NCP303151MNTWG?
The internal bootstrap diode is part of the bootstrap supply circuit that develops the bias voltage for the high-side driver.
