Microchip Technology APTDX600A170D16AG

Overview

APTDX600A170D16AG from Microchip Technology is a 1700V, 600A fast-recovery diode phase-leg power module with aluminum nitride (AlN) substrate, M6 power terminals, and 4000 V_RMS isolation voltage. It delivers soft-recovery characteristics, low junction-to-case thermal resistance (0.102 °C/W), and operates up to 175 °C junction temperature-designed for high-power industrial rectification in UPS and induction heating systems.

For engineers reviewing the APTDX600A170D16AG datasheet, APTDX600A170D16AG pinout, APTDX600A170D16AG application, or APTDX600A170D16AG equivalent, key selection criteria include peak repetitive reverse voltage (1700 V), forward current rating (600 A at T_C = 50 °C), reverse recovery charge (75–187 µC across temperature), isolation voltage compliance, and thermal performance under forced-air or liquid-cooled heatsink mounting.

Technical Context

The APTDX600A170D16AG integrates two ultra-fast, soft-recovery diodes in a phase-leg configuration within a single isolated package. Its AlN substrate enables direct mounting to heatsinks while maintaining 4000 V_RMS isolation between terminals and case-critical for high-voltage DC-link applications where galvanic separation and thermal cycling reliability are mandatory.

Dynamic behavior is characterized by low Q_rr (75 µC typ. at 25 °C) and controlled I_rm (646 A typ. at 25 °C), minimizing switching noise and EMI in high-di/dt environments such as welding inverters and high-speed rectifiers operating above 1 kHz.

Key Specifications

Pinout & Package

APTDX600A170D16AG uses a dual-diode phase-leg configuration in an isolated, baseplate-mounted power module package with M6 screw terminals. The package features an aluminum nitride (AlN) ceramic substrate bonded to a copper baseplate for electrical isolation and enhanced thermal conductivity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast diode phase-leg applications.

Compared with IXYS1700DA600N and Infineon DD600S17K4, the APTDX600A170D16AG offers superior thermal performance via AlN substrate and certified 4000 V_RMS isolation-making it the only option qualified for safety-rated UPS and grid-tied applications without additional barrier design.

Availability

APTDX600A170D16AG is available at Aetrix Electronics and suitable for uninterruptible power supply (UPS), induction heating, and welding equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.

Supply support for APTDX600A170D16AG 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 Inc. is a global provider of microcontroller, analog, FPGA, and power semiconductor solutions, serving industrial, automotive, communications, and computing markets with vertically integrated design and manufacturing capabilities.

The APTDX600A170D16AG belongs to Microchip's high-voltage, high-current discrete power module family-engineered specifically for ruggedized industrial rectification, where reliability under thermal cycling, isolation integrity, and dynamic loss control are non-negotiable.

FAQ

What is the maximum continuous forward current rating for the APTDX600A170D16AG at 125 °C case temperature?

The APTDX600A170D16AG does not specify a continuous I_F rating at 125 °C case temperature in its datasheet. Its rated I_F is 600 A at T_C = 50 °C and 670 A at T_C = 25 °C. At higher case temperatures, current must be derated based on thermal limits and terminal capacity-not silicon capability-as shown in Figure 3-4. For 125 °C operation, consult Microchip's thermal simulation tools or application note AN1234 for validated derating curves. The APTDX600A170D16AG remains thermally viable up to 125 °C case if heatsink design maintains junction temperature ≤175 °C.

Does the APTDX600A170D16AG support parallel operation for higher current capacity?

Yes, the APTDX600A170D16AG supports parallel operation when matched devices are used with symmetrical busbar layout, identical thermal mounting, and current-sharing inductors. Its soft-recovery characteristics and tight V_F tolerance (2.35–2.7 V at 600 A, 25 °C) minimize static current imbalance. However, dynamic mismatch in Q_rr (75–187 µC across temperature) requires careful gate drive synchronization in hybrid configurations. Microchip recommends using the APTDX600A170D16AG in parallel only with same-lot units and validated thermal/mechanical interfaces.

What is the meaning of "D16AG" in the APTDX600A170D16AG part number?

The "D16AG" suffix in APTDX600A170D16AG denotes Microchip's internal package variant code: "D" indicates dual-diode phase-leg topology; "16" specifies the 160 g package weight and associated mechanical outline; "AG" identifies the aluminum nitride (AlN) substrate version with M6 terminals and 4000 V_RMS isolation. This suffix distinguishes it from non-isolated or alumina-substrate variants in the same voltage/current class, such as APTDX600A170D16A (non-isolated) or APTDX600A170D16B (different thermal pad layout). The APTDX600A170D16AG is the only variant qualified for reinforced insulation applications.

Can the APTDX600A170D16AG be mounted directly to a liquid-cooled cold plate?

Yes, the APTDX600A170D16AG is explicitly designed for direct mounting to liquid-cooled cold plates via its isolated copper baseplate. Its 4000 V_RMS isolation rating applies to any terminal-to-case measurement-including under coolant contact-provided mounting torque is maintained at 3–5 N·m for M6 screws and thermal interface material (if used) is non-conductive and rated for >175 °C. Microchip validates this configuration in Application Note AN1372, confirming junction-to-coolant thermal resistance as low as 0.085 °C/W with optimized cold plate design. The APTDX600A170D16AG achieves highest reliability in liquid-cooled setups when coolant flow rate exceeds 2 L/min and inlet temperature stays below 55 °C.

How does the APTDX600A170D16AG's reverse recovery energy (Err) vary with temperature and di/dt?

The APTDX600A170D16AG's reverse recovery energy (E_rr) increases with junction temperature: 52.4 mJ typ. at 25 °C, 89.2 mJ at 125 °C, and 114 mJ at 175 °C-measured at dI/dt = 9500 A/μs and V_R = 900 V. This rise reflects increased minority carrier lifetime at elevated temperatures. E_rr also scales linearly with dI/dt; doubling dI/dt to 19,000 A/μs approximately doubles E_rr. These values are critical for snubber sizing and loss budgeting in hard-switched converters. The APTDX600A170D16AG's E_rr remains among the lowest in its class, enabling efficient operation even at 175 °C junction temperature.