NSG2000 Overview
The WXNSIC NSG2000 is a 250V high-speed high-side N-channel MOSFET gate driver engineered for both static switching and high-frequency switching applications where a high-side N-channel switch must remain fully enhanced for extended or indefinite periods. Unlike conventional bootstrap-based high-side drivers that require periodic low-side conduction to recharge a floating supply capacitor, the NSG2000 incorporates a dedicated integrated charging circuit that continuously maintains sufficient gate drive voltage to keep the external MOSFET fully enhanced — enabling true 100% duty cycle operation without any minimum off-time constraint. This makes the NSG2000 uniquely suited to high-side static switch and load switch applications where the channel must remain on indefinitely under system control.
WXNSIC has designed the NSG2000 with strong drive capability relative to its quiescent current class, delivering 290mA peak source (IHL) and 600mA peak sink (IOL) current, with a fast fall time (TF) of 30ns — enabling precise, low-loss turn-off of large gate capacitances. The propagation delay is specified at 150ns, and an adjustable turn-on duty cycle function allows designers to control the rate of gate charging, managing inrush current and dV/dt behaviour during turn-on. The gate drive supply accepts 4.5V to 20V, while the floating input rail supports voltages up to 250V, with an input VIN overvoltage lockout and a VCC undervoltage lockout (UVLO) with positive threshold of 4.2V and negative threshold of 4.0V. The TS pin tolerates negative voltages down to -9V, providing additional robustness during switching transients.
The NSG2000 is compatible with 3.3V, 5V, and 15V logic input levels, ensuring direct interfacing to a wide range of microcontrollers and digital controllers without level-shifting circuitry. With a quiescent current of just 120µA, the device is efficient in power-sensitive applications. It operates across a wide temperature range of -40°C to 125°C and is housed in the compact SOP-8 package. ABL Semi stocks the NSG2000 as a fully authentic, original WXNSIC factory product, with flexible MOQ and compliance documentation for UK and European customers.
Key Specifications
| Parameter | Value |
|---|---|
| Device Type | High-Side N-Channel MOSFET Static Switch Gate Driver |
| Maximum Input Voltage (VIN) | 250V |
| Gate Drive Supply Voltage (VCC) | 4.5V to 20V |
| Peak Source Output Current (IHL) | 290mA |
| Peak Sink Output Current (IOL) | 600mA |
| Rise Time (TR) | 70ns |
| Fall Time (TF) | 30ns |
| Propagation Delay | 150ns |
| Quiescent Current (Iq) | 120µA |
| Duty Cycle Support | 100% (integrated high-side charging circuit) |
| Turn-On Duty Cycle | Adjustable |
| Logic Input Compatibility | 3.3V, 5V, 15V compatible |
| UVLO Thresholds | Positive: 4.2V / Negative: 4.0V |
| TS Pin Negative Voltage Tolerance | Down to -9V |
| Operating Temperature Range | -40°C to +125°C |
| Package | SOP-8 |
Applications
The NSG2000 is designed for applications requiring a high-side N-channel MOSFET to be driven continuously or with variable duty cycle from a high-voltage supply rail, where bootstrap-based drivers are inadequate due to 100% duty cycle requirements. Primary application areas include high-side load switches, hot-swap controllers, bidirectional DC switches, solar bypass switch drivers, and solid-state relay output stages. The device is equally well-matched to industrial power distribution switches, battery protection high-side FET drivers, and high-frequency DC-DC converter high-side stages where its 250V rating, 100% duty cycle charging circuit, and adjustable turn-on capability provide a robust and flexible gate drive solution.
Pin-to-Pin Compatible Alternatives
The NSG2000’s SOP-8 package and high-side N-channel MOSFET driver architecture are compatible with established Western high-side gate driver ICs, enabling direct footprint substitution to reduce BOM cost and diversify supply chain options without PCB layout changes.
| Reference Part Number | Original Manufacturer | Why Choose NSG2000 |
|---|---|---|
| LTC4440 | Analog Devices (Linear Tech) | High-side N-channel MOSFET driver supporting 100% duty cycle in SOP-8; NSG2000 provides a cost-competitive alternative with equivalent integrated charging circuit, adjustable turn-on, and 250V floating rail support |
| IR2117 | Infineon (International Rectifier) | Single high-side gate driver in SOP-8; NSG2000 adds a dedicated 100% duty cycle charge circuit eliminating the minimum off-time bootstrap constraint present in the IR2117 |
| NCP5181 | onsemi | High/low-side gate driver in SOP-8; NSG2000 provides a dedicated high-side only solution with continuous charge capability and adjustable duty cycle for static switch applications where NCP5181’s bootstrap limits operation |
| FAN7390MX | onsemi (Fairchild) | High/low-side gate driver in SOP-8; NSG2000 replaces the high-side drive function with an integrated 100% duty cycle charging circuit, better suited to load switch and static switching topologies |
| UCC27714 | Texas Instruments | High/low-side gate driver with bootstrap supply; NSG2000 offers dedicated high-side static switch drive capability with no bootstrap recharge requirement, at a more competitive unit cost from ABL Semi stock |
Frequently Asked Questions
Is NSG2000 RoHS compliant?
Yes. The NSG2000 is fully RoHS compliant. WXNSIC manufactures the NSG2000 in accordance with EU RoHS Directive 2011/65/EU, ensuring the device is free from restricted hazardous substances including lead and mercury. ABL Semi can provide full compliance and trade documentation upon request to support UK and European regulatory and procurement requirements.
What are the pin-to-pin replacements for NSG2000?
The NSG2000 is a functional and footprint-compatible alternative to high-side MOSFET driver ICs in SOP-8, including the Analog Devices LTC4440, Infineon IR2117, onsemi NCP5181 and FAN7390MX, and Texas Instruments UCC27714 — particularly for applications requiring 100% duty cycle high-side drive where bootstrap-based alternatives are unsuitable. Refer to the compatibility table above for a detailed comparison.
What is the minimum order quantity (MOQ) for NSG2000?
ABL Semi offers flexible MOQ for NSG2000, supporting both prototype quantities and mass production orders. Contact us for current stock and pricing.
What package options are available for NSG2000?
The NSG2000 is available in the SOP-8 (small outline 8-pin) surface-mount package. This is the industry-standard format for single-channel and half-bridge gate driver ICs, ensuring broad PCB footprint compatibility with existing designs using comparable high-side drivers from Infineon, onsemi, and Texas Instruments. Contact ABL Semi to confirm current stock availability.
Why does the NSG2000 support 100% duty cycle, and when is this important?
Most high-side gate drivers use a bootstrap capacitor to generate the floating gate drive supply for the high-side switch. This capacitor must be recharged periodically through the low-side switch conduction interval, which means the high-side switch cannot remain on continuously — imposing a maximum duty cycle limit, typically around 95–98%. The NSG2000 eliminates this constraint by incorporating a dedicated integrated charging circuit that independently maintains the high-side gate drive voltage regardless of whether the switch is in a continuous on-state. This makes it essential for applications such as high-side load switches, solid-state relays, and DC bus isolation switches where the MOSFET must remain fully enhanced indefinitely under normal operating conditions — something bootstrap-based drivers fundamentally cannot achieve without external charge pump assistance.
For complete product specifications, please refer to: