Monolithic Power Systems Inc. MP1917AGR-P

Overview

MP1917AGR-P from Monolithic Power Systems is a high-frequency, half-bridge N-channel MOSFET gate driver with independent high-side and low-side control, 100V SW voltage rating, 4A peak sink/source capability per channel, and <5ns inter-channel propagation delay matching. It integrates a bootstrap diode and supports telecom and avionics DC/DC converters operating up to 98V input.

For engineers reviewing the MP1917AGR-P datasheet, MP1917AGR-P pinout, MP1917AGR-P application, or MP1917AGR-P equivalent, key selection criteria include bootstrap voltage range (115V), TTL-compatible inputs, UVLO thresholds (6.8V VDD / 6.5V BST-SW), and QFN-10 thermal performance (θJA = 47°C/W).

Technical Context

The MP1917AGR-P implements dual-channel level-shifting architecture: the low-side driver operates referenced to VSS, while the high-side driver uses internal charge-pump-assisted level shift to drive DRVH relative to SW. UVLO independently monitors both VDD and BST–SW rails, forcing outputs low if either falls below threshold.

It delivers matched 20ns typical propagation delays for both rising and falling edges across channels, with 15ns rise/fall times into 2.2nF loads at 12V VDD. The integrated bootstrap diode enables self-biased high-side operation without external discrete diodes.

Key Specifications

Pinout & Package

MP1917AGR-P is housed in a thermally enhanced QFN-10 (4mm × 4mm) package with exposed thermal pad on underside. Pin 9 (VSS) connects directly to the exposed pad, which must be soldered to PCB ground plane for optimal thermal dissipation (θJC = 7°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge gate driver applications.

Compared with IRS21844STRPBF and LM5109BMAX/NOPB, MP1917AGR-P uniquely combines 100V SW rating, integrated bootstrap diode, dual-rail UVLO, and sub-5ns channel matching-making it optimal for compact, high-reliability telecom and avionics half-bridge designs where timing precision and component count reduction are critical.

Availability

MP1917AGR-P is available at Aetrix Electronics and suitable for telecom half-bridge power supplies, avionics DC/DC converters, and two-switch forward converters requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for MP1917AGR-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with design centers in the US, China, and Taiwan.

The MP1917AGR-P belongs to MPS's high-frequency gate driver product line, engineered specifically for isolated brick power and high-reliability aerospace/telecom DC/DC topologies demanding tight timing, integrated bootstrap functionality, and robust UVLO protection.

FAQ

What is the maximum allowable SW node voltage for continuous operation?

The MP1917AGR-P supports continuous SW node voltage up to 98V under recommended operating conditions. Absolute maximum rating is 105V for short durations (<100ns), but sustained operation above 98V risks exceeding safe operating area limits and triggering thermal shutdown.

Does MP1917AGR-P require an external bootstrap diode?

No. The MP1917AGR-P integrates a bootstrap diode with 0.95V forward voltage at 100mA, eliminating the need for an external Schottky diode. This reduces component count, PCB area, and potential failure points in high-density power modules.

How does the dual UVLO function protect the system?

The MP1917AGR-P implements independent under-voltage lockout on both VDD (6.8V threshold) and BST–SW (6.5V threshold). If either rail drops below its threshold, the corresponding driver output is forced low, preventing partial or erratic gate drive that could cause shoot-through or MOSFET avalanche failure.

What is the purpose of the NC pins (5 and 6)?

Pins 5 and 6 are no-connect (NC) terminals - internally unbonded and electrically isolated. They must remain unconnected on the PCB layout and should not be tied to any net, including ground or supply, to avoid parasitic coupling or mechanical stress on the die bond wires.

Can MP1917AGR-P drive GaN HEMTs?

Yes - its 15ns rise/fall times into 2.2nF loads and 4A peak output current meet typical gate drive requirements for 100V-class GaN devices. However, layout must minimize inductance on DRVH/DRVL paths, and gate resistors may be needed to damp ringing due to GaN's faster switching speeds.

What thermal considerations apply to the exposed pad?

The exposed pad (Pin 9/VSS) is the primary thermal path. It must be soldered to a minimum 200mm² copper pour connected to internal/external ground planes. With proper layout, θJC = 7°C/W enables 2.66W continuous dissipation at TA = 25°C before thermal shutdown activates at 150°C junction temperature.

Is there a minimum input pulse width requirement?

Yes - the MP1917AGR-P requires a minimum input pulse width of 50ns on INH or INL to reliably toggle the corresponding output. Shorter pulses may result in incomplete switching or metastability, especially near temperature extremes or supply voltage boundaries.