Overview
The NCP5901BMNTBG is a high-performance dual MOSFET gate driver produced by onsemi. This component is optimized to drive the gates of both high-side and low-side power MOSFETs in a synchronous buck converter topology. It is designed to provide fast rise and fall times, adaptive anti-cross-conduction, and power-saving operation, making it an efficient solution for various power management applications, particularly in desktop systems.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| VCC (Main Supply Voltage) | Input Voltage Range | 4.5 V to 13.2 V |
| BST (Bootstrap Supply Voltage) | Voltage Range wrt GND | Up to 35 V |
| DRVH (High Side Driver Output) | Rise Time (VCC = 12 V, 3 nF load) | 16 ns to 30 ns |
| DRVH (High Side Driver Output) | Fall Time (VCC = 12 V, 3 nF load) | 11 ns to 25 ns |
| DRVL (Low Side Driver Output) | Rise Time (VCC = 12 V, 3 nF load) | 16 ns to 35 ns |
| DRVL (Low Side Driver Output) | Fall Time (VCC = 12 V, 3 nF load) | 11 ns to 20 ns |
| TJ (Operating Junction Temperature) | Range | 0°C to 150°C |
| TA (Operating Ambient Temperature) | Range | −10°C to +125°C |
| TSTG (Maximum Storage Temperature) | Range | −55°C to +150°C |
Key Features
- Faster Rise and Fall Times: Optimized for high-speed switching applications.
- Adaptive Anti-Cross-Conduction Circuit: Reduces switching losses and improves efficiency.
- Integrated Bootstrap Diode: Simplifies the circuit design and reduces component count.
- Pre-OV Function and ZCD Detect: Enhances protection and control over the switching process.
- Floating Top Driver: Accommodates boost voltages up to 35 V.
- Output Disable Control: Allows turning off both MOSFETs.
- Under-Voltage Lockout (UVLO): Ensures the outputs are low when the supply voltage is low.
- Power Saving Operation: Reduces power consumption under light load conditions.
- Direct Interface to PWM Controllers: Compatible with controllers like the NCP6151.
- Thermally Enhanced Package: Improves thermal performance and reliability.
Applications
The NCP5901BMNTBG is primarily used in power solutions for desktop systems, particularly in synchronous buck converter topologies. It is also suitable for other applications requiring high-efficiency power management, such as server power supplies and other high-power electronic devices.
Q & A
- What is the primary function of the NCP5901BMNTBG?
The NCP5901BMNTBG is a dual MOSFET gate driver designed to drive the gates of both high-side and low-side power MOSFETs in a synchronous buck converter.
- What are the key features of the NCP5901BMNTBG?
Key features include faster rise and fall times, adaptive anti-cross-conduction, integrated bootstrap diode, pre-OV function, ZCD detect, and under-voltage lockout.
- What is the operating voltage range for VCC?
The VCC (main supply voltage) operates within the range of 4.5 V to 13.2 V.
- What is the maximum bootstrap supply voltage?
The maximum bootstrap supply voltage (BST) is up to 35 V wrt GND.
- What are the typical rise and fall times for the high-side driver output?
The rise time is 16 ns to 30 ns, and the fall time is 11 ns to 25 ns at VCC = 12 V with a 3 nF load.
- What is the purpose of the under-voltage lockout (UVLO) feature?
The UVLO feature ensures that the outputs are held low when the supply voltage is below a certain threshold, typically 4.5 V.
- How does the adaptive anti-cross-conduction circuit benefit the operation?
The adaptive anti-cross-conduction circuit reduces switching losses and improves efficiency by preventing both high-side and low-side MOSFETs from being on simultaneously.
- What is the thermal junction temperature range for the NCP5901BMNTBG?
The operating junction temperature range is from 0°C to 150°C.
- Is the NCP5901BMNTBG compatible with other PWM controllers?
Yes, it is compatible with PWM controllers like the NCP6151.
- What are the typical applications for the NCP5901BMNTBG?
It is typically used in power solutions for desktop systems and other high-power electronic devices requiring efficient power management.
