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High Voltage UACHV Series AC-DC Converter

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