Overview
The NCP81391MNTXG, produced by onsemi, is an integrated driver and MOSFET solution designed for high-current DC-DC buck-boost power conversion applications. This device combines a MOSFET driver, high-side MOSFET, and low-side MOSFET into a single QFN31 package, significantly reducing package parasitics and board space compared to discrete component solutions. It is optimized for applications requiring high efficiency and reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|
| Supply Voltage Range (VCC, VCCD) | 4.5 | 12 | 13.2 | V | |
| Conversion Voltage (VIN) | 4.5 | 12 | 20 | V | |
| Continuous Output Current (FSW = 250 kHz) | 25 | A | |||
| Peak Output Current (FSW = 250 kHz, VVIN = 12 V, VOUT = 6 V, Duration = 10 ms) | 65 | A | |||
| High-Side MOSFET On Resistance (RON_HS) | 2.0 | mΩ | From VIN to VSWH pin | ||
| Low-Side MOSFET On Resistance (RON_LS) | 1.7 | mΩ | From VSWH to PGND pin | ||
| Operating Junction Temperature Range (TJ) | -40 | 150 | °C | ||
| Operating Ambient Temperature Range (TA) | -40 | 125 | °C | ||
| Maximum Storage Temperature Range (TSTG) | -40 | 150 | °C | ||
| Maximum Power Dissipation (PD) | 5.4 | W |
Key Features
- Capable of average currents up to 25 A and peak currents up to 65 A.
- Compatible with 3.3 V and 5 V PWM inputs, with tri-state capability.
- Over 97% peak efficiency.
- Zero current detection for improving light load efficiency.
- Optional thermal shutdown protection (NCP81391) or no thermal shutdown (NCP81391A).
- Internal bootstrap diode.
- Undervoltage lockout.
- Internal pull-up resistor at the ZCD_EN# pin and internal pull-down resistor at the EN pin (NCP81391 only).
Applications
- E-cigarettes.
- Unmanned Aerial Vehicles (UAVs).
- High-current DC-DC buck-boost power conversion applications.
Q & A
- What is the maximum continuous output current of the NCP81391MNTXG?
The maximum continuous output current is up to 25 A at a switching frequency of 250 kHz.
- What is the peak output current capability of the NCP81391MNTXG?
The peak output current capability is up to 65 A.
- What are the compatible PWM input voltages for the NCP81391MNTXG?
The device is compatible with 3.3 V and 5 V PWM inputs, with tri-state capability.
- Does the NCP81391MNTXG have thermal shutdown protection?
- What is the operating junction temperature range of the NCP81391MNTXG?
The operating junction temperature range is from -40°C to +150°C.
- What is the maximum storage temperature range for the NCP81391MNTXG?
The maximum storage temperature range is from -40°C to +150°C.
- What is the maximum power dissipation of the NCP81391MNTXG?
The maximum power dissipation is 5.4 W.
- Does the NCP81391MNTXG have zero current detection?
- What are some typical applications of the NCP81391MNTXG?
Typical applications include e-cigarettes and unmanned aerial vehicles (UAVs).
- What package type is the NCP81391MNTXG available in?
The device is available in a QFN31 package.
