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High Voltage UACHV Series

Power Factor Corrected
250 Watts, Up to 300 VDC Output
Hi Reliability, Isolated, Regulated
AC-DC Converter

 

250 Watts, Up to 300 VDC Output
Universal Input Voltage: 85 to 265 VAC
Power Factor Corrected, 0.99 (50 - 100% Full Load)
Space Saving Design: One module replaces two
Special Output Voltages Available
Regulated Output Voltage
Made in the USA, Fully Encapsulated
Meets EN/IEC 61000-3-2 Requirements

Typical Features/Electrical Characteristics

AC Line Input Voltage: 85 to 265 VAC, 47-440 Hz (Derate output power below 95VAC to 200 W maximum).
Output Power: 250 watts, 85 - 95 VAC input 200 Watts maximum
Output Voltage Ripple: 250 - 500 mV, See chart
Operating Temperature: 0 to 85° C, case temperature. See application notes for proper thermal considerations. Available with -20°C and -40°C Operating Temperature Range - Consult Factory)
Isolation

    From Input to DC Output: 4242 VDC
    From Input or DC output to Case: 2121 VDC
    From AC Input to Auxiliary 380 VDC Output: Non-Isolated

      Capacitor Requirement: * MUST BE INSTALLED* External at Auxiliary 380 VDC Pins: 220uf, 450 Volt Electrolytic
      Current Limit Setpoint: 130% of full load rating (typical)
      Operating Frequency: 100KHz

      For 3 Phase AC Input Models Consult Factory:
      1-800-431-1064
      info@picoelectronics.com

       

      Also Available:
      800 Hz Operation

       

      Environmental Screening

       

      HIGH VOLTAGE
      SERIES UACHV
      Pico
      Part
      No.      		 Output
      Voltage
      VDC

      Max.
      Load
      Current
      (A)

      **

      Max.
      Output
      Power
      (watts)

      **

      EFF @
      Full
      Load
      (%)

      *

      Output
      Ripple
      Full
      Load
      1-1 MHz BW
      mv p-p
      (%)
      Typical
      *

      Out Volt
      Toler-
      ance
      (±%)

      *

      V Load
      Reg
      10-100%
      Load
      (±%)

      *

      Line
      Regu-
      lation
      (±%)

      *

      		 Price
      (US $)
      UACHV100S
      100
      2.50
      250
      85
      250
      1.0
      1.0
      0.2
      561.75
      UACHV125S
      125
      2.00
      250
      85
      250
      1.0
      1.0
      0.2
      561.75
      UACHV150S
      150
      1.67
      250
      85
      350
      1.0
      1.0
      0.2
      561.75
      UACHV175S
      175
      1.43
      250
      85
      350
      1.0
      1.0
      0.2
      561.75
      UACHV200S
      200
      1.25
      250
      85
      400
      1.0
      1.0
      0.2
      593.85
      UACHV225S
      225
      1.11
      250
      85
      400
      1.0
      1.0
      0.2
      593.85
      UACHV250S
      250
      1.00
      250
      85
      500
      1.0
      1.0
      0.2
      593.85
      UACHV275S
      275
      0.91
      250
      85
      500
      1.0
      1.0
      0.2
      593.85
      UACHV300S
      300
      0.83
      250
      85
      500
      1.0
      1.0
      0.2
      658.05

      External Capacitor Required: 220µF, 450 V Aluminum Electrolytic Capacitor between pins 4 and 5
      Power Factor Corrected: 50 - 100% of Full Load
      *All specifications are typical at nominal (115VAC, 60Hz) input, full load and at 25°C baseplate temperature (unless otherwise stated).
      ** Using proper thermal considerations as outlined in Application Notes

       

      SERIES UACHV


      Measurements = inches
      Weight: 340 Grams Typical

      NOTE: The torque for mounting screws must be 6 to 9 In-Lbs
      PIN
      No.
      FUNCTION
      1
      AC IN
      2
      AC IN
      3
      N/C
      4
      +380 V BUS
      5
      -V BUS
      6
      -V OUT
      7
      + V OUT

      C1 = 220 uf, 450V
      Aluminum Electrolytic Capacitor

       

      CH HEATSINK


      All dimensions are in inches
      Approx. weight = 145 grams

      CV HEATSINK

       

      NOTE:  Additional Heatsink options, consult factory
      Approx. Weight = 145 grams 

       

       

       

      THERMAL INTERFACE
      PART  TI

       

      Alloy Aluminum Substrate

      Thermal Conductivity, (BTU-in/hr ft²  °F) ----1530
      Coefficient of Thermal Expansion (25-100°C, 10-6 in./in. °F ---13.1
      Hardness, Brinnell B ----23
      Endurance Limit, psi. ----5000
      Standard Thickness (inches) ---.002

       

      Thermal Considerations
      Thermal Resistance °C/Watts

        High Voltage UACHV Series
      .
      Baseplate
      Heatsink
      CV
      Heatsink CH
      Free Air
      4.8
      3.3
      2.8
      200 LFM
      2.6
      1.6
      0.9
      400 LFM
      1.6
      1.0
      0.6
      600 LFM
      1.3
      0.7
      0.5
      800 LFM
      1.1
      0.6
      0.4
      1000 LFM
      0.9
      0.5
      0.35

       

      EXAMPLE 1

      A UACHV150S module has an efficiency of 85%. What is the maximum ambient temperature if 250 Watts of power is needed?

      A) In free air:

      B) In free air with heatsink (CV)

      C) With 400 LFM of air flow and heatsink CH.

       

      EXAMPLE 2

      What would be the maximum output power for a UACHV150S module at an ambient temperature of 50°C with an efficiency of 85%?

      A) If the module is used in free air.

      B) If the module is used in an area with forced air at 200 LFM with no heatsink.

      C) If module with heatsink (CV) is used in free air.

      EXAMPLE 3

      At a maximum ambient temperature of 50°c and an efficiency of 85%, how could a UAC150S module be used if 200 Watts of output is required?

      Using Relation (2), we first find the thermal resistance from case to air.

      A) If no heatsink is used.

      From Table 1, approximately 900 LFM of airflow is required.

      B) If a (CV) heatsink is used.

      400 LFM of airflow is required.

      C) If a (CH) heatsink is used.

      200 LFM of airflow is required.

       

       

       

       

      For immediate engineering assistance or to place an order:
      Call Toll Free: 800-431-1064

      PICO Electronics, Inc.

      143 Sparks Ave. Pelham, NY 10803-1810
      Tel: 914-738-1400
      Fax: 914-738-8225