Overview
The NCP81071BMNTXG is a high-speed dual low-side MOSFET driver produced by onsemi. This component is designed to provide large peak currents into capacitive loads, making it suitable for applications requiring high current drive capability. The NCP81071BMNTXG can deliver 5 A peak current at the Miller plateau region, which helps reduce the Miller effect during MOSFET switching transitions. It also features enable functions for each driver, enhancing control capabilities in various applications. The device is available in a WDFN8 3 mm x 3 mm package and supports a wide range of operating temperatures from -40°C to 140°C.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage | VDD | -0.3 | 24 | V | |
| Output Current (DC) | Iout_dc | 0.3 | 0.3 | A | |
| Reverse Current (Pulse < 1 μs) | 6.0 | A | |||
| Output Current (Pulse < 0.5 μs) | Iout_pulse | 6.0 | A | ||
| Input Voltage | INA, INB | -6.0 | VDD+0.3 | V | |
| Enable Voltage | ENA, ENB | -0.3 | VDD+0.3 | V | |
| Output Voltage | OUTA, OUTB | -0.3 | VDD+0.3 | V | |
| Junction Operation Temperature | TJ | -40 | 140 | °C | |
| VDD Under Voltage Lockout (rising) | VCCR | 3.5 | 4.0 | 4.5 | V |
| VDD Under Voltage Lockout (hysteresis) | VCCH | 400 | mV | ||
| Operating Current (no switching) | IDD | 1.4 | 3 | mA |
Key Features
- High Current Drive Capability: ±5 A peak current to drive the gate of power MOSFETs effectively.
- TTL/CMOS Compatible Inputs: Inputs are independent of supply voltage, ensuring compatibility with a wide range of logic levels.
- Industry Standard Pin-out: Compatible with standard pin configurations, making it easy to integrate into existing designs.
- High Reverse Current Capability: Up to 6 A peak reverse current to handle high-capacitive loads.
- Enable Functions: Each driver has an enable function (ENA and ENB) for better control in different applications. These pins are internally pulled up to the driver’s input voltage for active high logic and can be left open for standard operations.
Applications
The NCP81071BMNTXG is suitable for a variety of high-performance applications, including:
- Power Supplies: High-efficiency power supplies, such as DC-DC converters and power factor correction (PFC) circuits.
- Motor Control: Motor drive systems that require high current and fast switching times.
- Industrial Automation: Control systems in industrial automation that need reliable and high-speed MOSFET drivers.
- Aerospace and Defense: High-reliability applications in aerospace and defense where robust and efficient MOSFET driving is critical.
Q & A
- What is the peak current drive capability of the NCP81071BMNTXG?
The NCP81071BMNTXG can deliver up to ±5 A peak current.
- What are the enable functions on the NCP81071BMNTXG?
The device features enable functions (ENA and ENB) for each driver, which are internally pulled up to the driver’s input voltage for active high logic.
- What is the operating temperature range of the NCP81071BMNTXG?
The operating temperature range is from -40°C to 140°C.
- What are the available package types for the NCP81071BMNTXG?
The device is available in MSOP8-EP, SOIC8, and WDFN8 3 mm x 3 mm packages.
- How does the NCP81071BMNTXG reduce the Miller effect?
The device delivers 5 A peak current at the Miller plateau region to help reduce the Miller effect during MOSFET switching transitions.
- What is the typical operating current of the NCP81071BMNTXG when not switching?
The typical operating current (IDD) when not switching is around 1.4 to 3 mA.
- What is the VDD under voltage lockout (hysteresis) for the NCP81071BMNTXG?
The VDD under voltage lockout (hysteresis) is 400 mV.
- How should the thermal pad of the NCP81071BMNTXG be connected?
The thermal pad must be connected to a ground plane, and several ground layers should be added to maximize heatsinking capability.
- What are some recommended layout guidelines for using the NCP81071BMNTXG?
Place the driver close to the driven MOSFET, use a bypass capacitor between VDD and GND close to the driver, and minimize inductance by using low-inductance components and paralleled vias.
- Is the NCP81071BMNTXG compatible with TTL and CMOS inputs?
Yes, the inputs are TTL/CMOS compatible and independent of the supply voltage.
