120 Watt AC-DC Power Supplies

Product Information

EASYMOD® AM-120U SERIES is a 120 Watt AC-DC Power Supplies platform with both standard and configurable models featuring output voltage(s) that can be quickly configured to order while maintaining all international safety approvals.

These 120 watt AC-DC power supplies are available in single, dual, triple or quad output configurations with outputs ranging from 1.5 to 48 VDC. The AM-120U feature an industry-standard footprint; universal AC input; international safety approvals; Class B emissions; and -20°C to +70°C operation.

EASYMOD® 120 watt AC-DC power supplies capabilities include a multitude of output voltage configurations, optional covers (with or without fan), extended temperature operating range, isolated outputs, attached wire harnesses and much, much more. All these modifications are available without any impact on safety approvals to reduce both development cost and time to market.

Features and Options
  • Universal AC Input - meets EN61000-3-2
  • Small 3.3 x 5.0 x 1.5” U-Frame Package
  • 1~4 Outputs configurable from 1.5~48VDC
  • Five Year Warranty
  • Remote Sense Option (V1 Only)
  • Optional Overtemperature Protection
  • >500k Hours MTBF Demonstrated
  • Optional -40°C Guaranteed Start-Up
  • Double Sided PC Board
Voltage Range 90-264VAC
Frequency 47-63Hz
Power Factor EN61000-3-2 Amendment 14 Compliant
Inrush Current 35A Max (cold start)
Current @ 115VAC 2.5A max
Fusing 3.15A / 250VAC

90W Convection | 120W with 30 cfm Airflow

Hold-up Time16mSec
Efficiency 75% Typical
Adjustment Range (V1 Only)±5%
Ripple / Noise, max. 1% pk-pk max.
Line Regulation ±0.2% max.
Load Regulation @ 60% ±40% Full Load

V1: ±3% max.
V2-V4: ±5% max.

Cross Regulation @ 60% ± 40% Full Load V1: Change in V2 - V4: ±0.5%
V2 - V4: Change in V1 @75 ±25% F/L: ±5% max.
Overvoltage Protection (V1 Only) >130% (Latch Off)
Power Limit >120% (Auto-Recovery)
Overshoot (all outputs) 10% max.
Response Time 500μSec (25-75% step load)
Switching Frequency 60KHz (typical)
Operating Temp. Range-20°C to +50°C (Full Load)
Consult factory for -40°C Guaranteed Start-Up and Industrial Temperature Range options
Output Current Derating2.5%/°C, 50°C to 70°C
Storage Temp. Range -40°C to + 85°C
Humidity 5% to 95%, Non-Condensing
MTBF, Demonstrated >500,000 Hours
Cooling 30 cfm Airflow for Full Power
ImmunityEN61000-4-2; -3; -4; -5; -6; -8; -11
Altitude10,000 feet
Case Dimensions5.00 x 3.30 x 1.50” / 127 x 83.8 x 38.1mm
Weight 1.2 lbs. (0.6 kg.)
Vibration from 10 - 55Hz1.0G Peak
.(3 orthogonal axes @ 1 octave/min, 5 minute dwell @ 4 major resonances)
EMCFCC Class B & VDE Class B, CISPR 22; EN 55022 Class B
SafetyUL/cUL 62368-1 2nd ED, EN62368-1 2nd ED, CB Report IEC62368-1, CE Mark (LVD)


The EASYMOD® family of switched mode AC-DC power supplies has been designed with two precepts; (1) the laws of physics are immutable, and (2) the satisfaction of customer requirements and needs is paramount.

A host of modifications, only some of which are listed below, can and will be performed on products for customer programs requiring as few as 250 units per year. These “mods” are available at nominal premium (if any), normally without non-recurring engineering costs (although a one time documentation fee may be incurred), and usually with all safety agency approvals in place. This minimizes both product development cost and new product time to market. Effectively, EASYMODs® AC/DC switchers allow small program requirements the luxury of costly custom power supply designs.


  • Unique Output Combinations from 1.5 to >48 volts
  • Power Fail / Power Good Signals
  • Enable / Inhibit
  • Isolated Outputs
  • Low Output Ripple and Noise
  • Cover & Fan Assembly
  • Extended Temperature Operating Range
  • -40°C Start-Up
  • Zero Load Operation
  • Remote Sense
  • Remote On / Off

CALL: +1-954-905-1070

EMAIL: the.power.solution@unipowerco.com

Looking for the DC input version of this product? Click HERE.
Looking for the Medical Approved version of this product? Click HERE.