MSK4800H

feature

Half-bridge configuration

Rated voltage 600V

450A continuous output current

Internal zener clip on door

Proprietary package provides near-hermetic performance

Hi-Rel screening possible (modified 38534)

Lightweight Arched Alsic Base Plate

Robust mechanical design for high reliability applications

Ultra-low inductance internal layout

Withstands 96 hours HAST and thermal cycling (-55°C to +125°C)

High side collector sensing pin for de-sat detection

illustrate:

The MSK4800 is one of a series of Plastic Encapsulated Modules (PEM) specially developed for military use,

Aerospace and other harsh environment applications. Half-bridge configuration and 600V/450A rating make it

Suitable for high current motor drive and inverter applications. Aluminum-Silicon Carbide (ALSIC) substrates are available

Excellent flatness and light weight; far superior to copper or copper alloys found in most high power plastic modules.

The highly thermally conductive materials used to build MSK4800 allow for high power output on elevated substrates.

temperature. Our proprietary coating, SEES™ - Harsh Environment Encapsulation System - Protects Internal Circuitry

The moisture and contamination of MSK PEM allows it to pass stringent environmental screening requirements.

Military and aerospace applications. MSK PEM is also available for industry standard silicone coatings.

Low cost option.

Absolute Maximum Ratings

Collector to Emitter Voltage: 600V

Gate to Emitter Voltage: ±20V

Current (continuous): 450A

Pulse current (1ms): 900A

Shell isolation voltage: 2500V

Storage temperature range: -55°C to +125°C

Junction temperature: 150°C

Shell operating temperature range:

MSK4800H -55°C to +125°C

MSK4800 -40°C to +85°C

Thermal calculation

Power dissipation and maximum allowable temperature rise involve many variables working together. collector current,

Both the PWM duty cycle and the switching frequency are power loss factors. DC losses or "on-time" losses

VCE(SAT) x collector current x PWM duty cycle. For MSK4800, VCE(SAT) = 2.6V (max), 450 amps and PWM

With a 30% duty cycle, the DC losses are equal to 351 watts. Switching losses vary proportionally with the switching frequency. MSK4800

Typical switching losses at VCE=300V and ICE=450A are about 117.7mJ, which is just the sum of the power-on switching losses and the turn-off switching losses. Multiplying the switching frequency by the switching losses will result in

switching power consumption. The MSK4800's switching power consumption is 589 watts at 5KHz.

The total loss is the sum of the DC loss plus the switching loss, which in this case is 940 watts.

940 watts x 0.08°C/W thermal resistance equals 75 degrees of temperature rise between case and connector.

Subtracting 75°C from the maximum junction temperature of 150°C equals the maximum case temperature of 75°C.

example.

VCE(SAT) x IC x PWM duty cycle = 2.6V x 450 amps x 30% = 357 watts DC loss

Turn-on switching loss + turn-off switching loss=total switching loss=30.5+87.2=117.7mJ

Total Switching Loss x PWM Frequency = Total Switching Power = 117.7mJ x 5KHz = 589W

Total power consumption = DC loss + switching loss = 351 + 589 = 940 watts

Junction temperature rise above case = total power dissipation x thermal resistance

940 watts x 0.08°C/W = 75°C above case temperature rise

Maximum Junction Temperature - Junction Temperature Rise = Maximum Substrate Temperature

150°C-75°C=75°C

MSK4800H original factory authorized formal channels to ensure that imported original authentic products are available-Yujixin Electronics