Overview
The NCP302035MNTWG, produced by onsemi, is an integrated driver and MOSFET module designed for high-current DC-DC buck power conversion applications. This module integrates 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 use in synchronous buck converter topologies and supports various control modes, including Zero Current Detection (ZCD) and PWM Tristate control.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Average Current | I_AVG | - | - | 35 | A |
| Peak Current | I_PEAK | - | - | 70 | A |
| Switching Frequency | f_SW | - | - | 2 | MHz |
| VCC Supply Voltage | VCC | -0.3 | - | 6.5 | V |
| VIN Input Voltage | VIN | -0.3 | - | 30 | V |
| Operating Junction Temperature | TJ | -40 | - | 150 | °C |
| Thermal Resistance (JA) | θJA | - | - | 12.4 | °C/W |
Key Features
- Capable of average currents up to 35 A and peak currents up to 70 A.
- Supports switching frequencies up to 2 MHz.
- Compatible with 3.3 V or 5 V PWM input.
- Responds properly to 3-level PWM inputs with option for Zero Cross Detection.
- Internal bootstrap diode and undervoltage lockout (UVLO).
- Thermal warning output and thermal shutdown protection.
- Supports Intel® Power State 4.
- Integrated low-RDS(on) N-channel MOSFETs for both high-side and low-side drivers.
- Bootstrap circuit with external capacitor and resistor for high-side driver.
- Power supply decoupling with low-ESR capacitors for stable operation.
Applications
The NCP302035MNTWG is primarily used in synchronous buck converter topologies for high-current DC-DC power conversion. Key applications include:
- Desktop and notebook microprocessors.
- High-power DC-DC converters requiring high efficiency and reliability.
- Systems needing precise control over power conversion, such as in server and data center power supplies.
Q & A
- What is the maximum average current the NCP302035MNTWG can handle?
The NCP302035MNTWG can handle average currents up to 35 A.
- What is the maximum switching frequency supported by the NCP302035MNTWG?
The module supports switching frequencies up to 2 MHz.
- What are the compatible PWM input voltages for the NCP302035MNTWG?
The module is compatible with 3.3 V or 5 V PWM input.
- Does the NCP302035MNTWG support Zero Cross Detection (ZCD)?
- What is the purpose of the internal bootstrap diode in the NCP302035MNTWG?
The internal bootstrap diode is part of the bootstrap circuit that provides the gate voltage for the high-side MOSFET.
- What is the thermal shutdown temperature of the NCP302035MNTWG?
The thermal shutdown temperature is 180°C.
- How does the NCP302035MNTWG prevent cross-conduction of the MOSFETs?
The module prevents cross-conduction by applying non-overlap time between the turn-off of one MOSFET and the turn-on of the other MOSFET.
- What type of capacitors are recommended for power supply decoupling in the NCP302035MNTWG?
Low-ESR capacitors, such as multi-layer ceramic capacitors (MLCC), are recommended.
- What is the operating junction temperature range of the NCP302035MNTWG?
The operating junction temperature range is -40°C to 150°C.
- What are the primary applications of the NCP302035MNTWG?
The primary applications include desktop and notebook microprocessors and high-power DC-DC converters.
