Microchip Technology MD1715K6-G-M935

Overview

MD1715K6-G-M935 from Microchip Technology is a 2-channel logic controller IC for high-speed ultrasound transmit pulsers, integrating 12 matched low-impedance MOSFET gate drivers with ±4.75–12.9V gate drive voltage, 2A peak source/sink current, and 6.5 ns rise/fall time (1 nF load). It pairs exclusively with TC8020 to form a five-level pulser system used in medical ultrasound imaging and non-destructive testing.

For engineers reviewing the MD1715K6-G-M935 datasheet, MD1715K6-G-M935 pinout, MD1715K6-G-M935 application, or MD1715K6-G-M935 equivalent, this page delivers verified electrical specs, channel-matched timing performance (±2 ns delay matching), dual-supply gate drive architecture (VDD1/VDD2, AVSS/VSS), and functional truth tables for SEL/POS/NEG control logic per channel.

Technical Context

The MD1715K6-G-M935 implements two independent 3-pair gate driver channels (A and B), each driving three P/N-MOSFET pairs in the companion TC8020 output stage. Its control logic accepts 1.8–3.3V CMOS inputs (SELA/POSA/NEGA, SELB/POSB/NEGB) and features smart logic threshold with VLL/EN dual-function enable/reference pin.

It operates across dual analog supplies: AVDD/AVSS (±12.9V max) for internal circuitry and separate VDD1/VDD2 (±12.9V) and VSS (–12.9V) for gate driver stages - enabling independent voltage tuning per driver pair group. Propagation delay is 10 ns with ±2 ns channel-to-channel matching and 1 ns rise/fall time matching per channel.

Key Specifications

Pinout & Package

MD1715K6-G-M935 is housed in a 40-lead QFN (VQFN) package with exposed thermal pad (K6 designation), RoHS-compliant matte tin finish, and 3000-unit reel packaging (M935).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed multi-channel gate driver applications.

Compared with TC8020 and MD1810, MD1715K6-G-M935 uniquely provides dual-channel control with 12 matched drivers in one die - eliminating inter-device skew and reducing PCB area versus two MD1810s, while enabling true synchronized five-level waveform synthesis essential for medical imaging.

Availability

MD1715K6-G-M935 is available at Aetrix Electronics and suitable for medical ultrasound imaging systems, non-destructive testing equipment, and piezoelectric transducer driver modules requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.

Supply support for MD1715K6-G-M935 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

Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and timing solutions, with ISO/TS-16949-certified wafer fabrication and design centers worldwide.

The MD1715K6-G-M935 belongs to Microchip's high-speed ultrasound pulser IC family, engineered specifically for precision timing-critical medical and industrial NDT applications requiring multi-level voltage synthesis and sub-nanosecond channel matching.

FAQ

What is the primary function of MD1715K6-G-M935 in an ultrasound system?

The MD1715K6-G-M935 serves as the logic controller for a five-level high-speed transmit pulser, generating precisely timed, matched gate drive signals for the TC8020's 12 MOSFETs. It translates low-voltage CMOS inputs (SELA/POSA/NEGA etc.) into high-current, high-voltage gate pulses - enabling programmable pulse amplitude, polarity, and damping control essential for beamforming in medical ultrasound imaging and NDT systems. Its ±2 ns channel matching directly impacts image resolution.

Does MD1715K6-G-M935 require external level shifting for 1.8V logic inputs?

No, MD1715K6-G-M935 does not require external level shifting for 1.8V logic inputs. Its logic interface supports 1.8V–3.3V CMOS levels natively, with input thresholds defined as 0.2×VLL (low) and 0.8×VLL (high). When VLL = 1.8V, VIH is 1.44V min and VIL is 0.36V max - ensuring robust noise margin and direct interfacing with 1.8V FPGAs or ASICs without additional circuitry.

How does the VLL/EN pin operate in MD1715K6-G-M935?

The VLL/EN pin on MD1715K6-G-M935 is a dual-function terminal: it supplies the logic reference voltage (1.8–3.3V) and acts as the global chip enable. When pulled low (<0.3V), it disables all 12 gate drivers and reduces quiescent currents (e.g., IVDD1Q ≤25 µA). When high (≥0.8×VLL), it enables normal operation. This integrated design eliminates need for separate enable logic and simplifies power sequencing in pulser subsystems.

Can MD1715K6-G-M935 drive MOSFETs directly without TC8020?

No, MD1715K6-G-M935 cannot drive power MOSFETs directly without TC8020. It is a gate driver controller - its OPx/ONx outputs are designed exclusively to interface with the dedicated gate inputs of TC8020's integrated P/N-MOSFET pairs. The MD1715K6-G-M935 lacks high-voltage level-shifting circuitry, current boosting stages, or protection features required for direct power FET drive; TC8020 provides the final high-current, high-voltage output stage.

What thermal management is required for MD1715K6-G-M935 in continuous operation?

MD1715K6-G-M935 requires connection of its exposed thermal pad to a solid AVSS copper plane for effective heat dissipation. With θJA = 24°C/W and max power dissipation of 1.3W (per datasheet), junction temperature rise can exceed safe limits without proper thermal design. A minimum 200 mm² AVSS-connected copper area under the pad, plus optional thermal vias to inner ground planes, is recommended to maintain TJ ≤125°C under full CW 5 MHz operation with 12 drivers active.