Monolithic Power Systems Inc. EV1907-Q-00A

Overview

EV1907-Q-00A from Monolithic Power Systems is an evaluation board for the MP1907 high-frequency 100V half-bridge N-channel MOSFET gate driver IC. It implements a buck converter topology with independent high-side (DRVH) and low-side (DRVL) gate drive outputs, <5ns propagation delay matching, 200kHz switching frequency support, and integrated bootstrap diode. Designed for rapid validation of MP1907 in high-voltage DC-DC power stages.

For engineers reviewing the EV1907-Q-00A datasheet, EV1907-Q-00A pinout, EV1907-Q-00A application, or EV1907-Q-00A equivalent, this board provides ready-to-test hardware with on-board PWM-to-INH/INL signal generation, dead-time management, and full thermal and electrical characterization at 100V VPOWER and 2.5A load current.

Technical Context

The EV1907-Q-00A implements a fixed-buck configuration using the MP1907GQ QFN10 driver IC, which features independently controlled high-side and low-side channels with UVLO on both VDD and bootstrap supplies. The board integrates a 33µH power inductor (Wurth WE74435573300), dual 150V/6.5A N-channel MOSFETs (MP4394N), and a 5V LDO (MP2016DJ) for logic supply.

Signal conditioning includes dual inverters (NC7WZ14P6X) and a 2-input OR gate (NC7S32M5) to generate synchronized INH/INL from a single PWM input, enforcing programmable dead time. All critical nodes - DRVH, DRVL, SW, and BST - are accessible via test points for oscilloscope probing under real operating conditions.

Key Specifications

Availability

EV1907-Q-00A is available at Aetrix Electronics and suitable for telecom half-bridge power supplies, avionics DC-DC converters, and two-switch forward converter development requiring stable component supply and fast-turn prototyping capability.

Supply support for EV1907-Q-00A 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 analog and power ICs, with design centers across Asia and North America and global manufacturing partnerships.

The MP1907 product line delivers high-frequency, high-voltage gate drivers for isolated and non-isolated DC-DC topologies where precise timing control, shoot-through prevention, and bootstrap reliability are critical in compact power systems.

FAQ

What is the purpose of the on-board MP2016DJ LDO?

The MP2016DJ provides a regulated 5V/30mA supply for logic-level circuitry including the NC7WZ14P6X inverters and NC7S32M5 OR gate. It decouples digital control signals from VDD fluctuations and ensures consistent input thresholds for PWM-to-INH/INL translation under varying load conditions.

Can EV1907-Q-00A operate without external PWM generation?

No - the board requires an external function generator or controller to supply a TTL-compatible PWM signal to the PWM header. The on-board logic converts this into phase-shifted INH and INL signals but does not include internal clock or modulation circuitry.

Why are R6–R9 installed as 0Ω resistors?

R6–R9 serve as configurable jumpers to isolate or connect ground domains (PGND, LOADGND, GND) for EMI testing, thermal isolation, or layout validation. Their 0Ω value allows flexible grounding schemes without soldering changes during system-level noise or efficiency characterization.

What is the role of the 47pF capacitors C17 and C18?

C17 and C18 are C0G-type 47pF capacitors placed near the MP1907's INH and INL inputs to suppress high-frequency ringing and reduce susceptibility to false triggering from edge-induced noise during fast PWM transitions.

How is dead time enforced on this evaluation board?

Dead time is generated by the combination of NC7WZ14P6X inverters and NC7S32M5 OR gate, which introduce fixed propagation delays between PWM edges and the resulting INH/INL signals. Measured waveforms confirm non-overlapping DRVH and DRVL pulses, preventing shoot-through under all tested conditions.

Is the bootstrap capacitor integrated or external?

The bootstrap capacitor is external: C4 (330µF aluminum electrolytic, Sanyo 25JZV330MINS) is mounted on the board and connected between BST and SW pins of U1. Its value supports stable high-side gate drive at 200kHz with 10% duty cycle and 100V VPOWER.