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The Astrodyne TDI PMMK320S-12E is a 320-watt medical-grade switching power supply with active power factor correction. It operates with a universal 90-264VAC input voltage range and provides a single 12VDC output at up to 26.7A.
Key electrical specifications include 77% typical efficiency at full load and nominal input, ±1% line regulation, and ±1~1.5% load regulation. It offers over-voltage protection up to 130% and over-current protection up to 160%, both with auto-recovery. The power supply also features remote sense and remote shutdown capabilities.
Designed for medical applications, this enclosed power supply has a compact form factor measuring 8.03"L x 3.86"W x 1.57"H and weighs 1.75 lbs (794g). It is chassis mountable and operates within a temperature range of -20°C to +70°C with derating. Safety agency approvals include CB, CE, cURus, and UL, compliant with standard 60601-1.
Additional features include active power factor correction and isolation ratings of 5656VDC (Input to Output), 2121VDC (Input to Ground), and 707VDC (Output to Ground). The power supply is designed for reliable operation with a minimum MTBF of 65,000 hours at 25°C.
The input voltage range is 90-264 VAC (47-63 Hz) and the output voltage is 12 VDC.
The PMMK320S-12E is an enclosed, chassis-mount AC-DC converter.
The operating temperature range is -20°C to +70°C with derating.
The maximum output current is 26.7 A.
Overvoltage protection (130% max.), overcurrent protection (160% max.), and short circuit protection with auto recovery.
The isolation voltage is 5656 VDC.
The MTBF is 65,000 hours minimum at 25°C per MIL-STD-217F.