# PT4820 Series Power Modules

## Features

️· Triple Outputs (Independently Regulated)
️· Input Voltage Range: 36V to 75V, 80V Surge
️· 1500VDC Isolation
️· Dual Logic On/Off Control
️· Short-Circuit Protection (All Outputs)
️· Fixed Frequency Operation
️· Over-Temperature Shutdown
️· Under-Voltage Lockout
️· Space Saving Package: 1.3 sq. in. PCB Area (suffix N)
️· Solderable Copper Case
️· Safety Approvals: UL60950, CSA 22.2 950, VDE EN60950

## Pin Configuration

(Diagram showing pin numbers and labels including Vin, GND, Vo1, Vo2, Vo3, Enable pins, and COM nodes.)

## Pin Descriptions

️· +Vin: Positive input supply (connect to ground for –48V systems).
️· –Vin: Negative input supply, 0V reference for enable inputs.
️· EN 1: Positive logic enable input (active high).
️· EN 2: Negative logic enable input (active low).
️· Vo 1, Vo 2, Vo 3: Regulated output voltages.
️· COM: Secondary return (ground) for outputs.
️· Vo 1/2/3 Adjust: Adjustment pins for output voltages.

## Electrical Specifications (PT4821 as example)

️· Output Current (Vo1): Up to 8A
️· Output Current (Vo2, Vo3): Up to 6A
️· Total Output Current: Up to 12A
️· Efficiency: Typically 85-87% (depending on load)
️· Operating Temperature: –40°C to +85°C

## Environmental Specifications

️· Storage Temperature: –40°C to +125°C
️· Shock: Meets Mil-STD-883D Method 2002.3
️· Vibration: Meets Mil-STD-883D Method 2007.2

## Notes

️· Ultra-low ESR capacitors are recommended.
️· Proper heat sinking may be required depending on the application and load conditions.
️· Refer to the datasheet for specific model electrical specifications.
️· The enable inputs have internal pull-ups.