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Series DC3

Input Voltage Range: 300 - 900 VDC
Output Voltages: 3.3 to 300 VDC
Hi Reliability-Mil Options Available
Single/Dual Isolated Outputs
Fully Regulated - Up to 50 Watts
Short Circuit Protection
Thru Hole or Terminal Strip

 

New: 300-900 VDC Input Range.
Output Voltages: 3.3 to 300 VDC

This series of switching High Voltage Input DC-DC pwer supplies are available in 44 different models. All single and dual outputs are isolated and offer excellent line and load regulation. These units have continuous short circuit protection and will operate from 0°C to +85°C baseplate. the hi reliability DC3 Series, up to 50 watts, is the design choice for your most stringent industrial applications.

TYPICAL CHARACTERISTICS

Test Conditions: 25°C Ambient

Input Voltages: 300 - 900 VDC

Converter Frequency: 66KHz

Operating Temperature: 0°C to +85°C Baseplate

Storage Temperature: -55°C to +105°C

Output Voltage Temperature Coefficient: 0.02% per °C

Isolation: 2121VDC

External Electrolytic Capacitor: Not Required

FEATURES:

Excellent Line Regulation: ±1% (300-900 VDC)

Excellent Load Regulation: 10% - 100%, ±2%

Continuous Short Circuit Protection

Encapsulated

Semiconductors: Conservatively rated

Wide Input Range: 300 - 900 VDC

Expanded Operating Temperature: -20°C or -40°C to +85°C Available

Selected MIL STD 883 Screening Available

Consult Factory: 800-431-1064

 

SERIES DC3 SINGLE AND DUAL OUTPUT
THRU-HOLE MODELS

Weight: 190 Grams Typical
All dimensions are in Inches
NOTE: The torque for mounting screws must be 6 to 9 In-Lbs.

PIN # SINGLE (For Units with Vout <=48V) SINGLE (For Units with Vout>=100V)
1 + Vout + Vout
2 + Vout NC
3 - Vout NC
4 - Vout - Vout
5 SDN SDN
6 - Vin - Vin
7 + Vin + Vin

Shutdown Pin (SDN) Application Note

PIN # DUAL
1 + Vout
2 COMM
3 COMM
4 - Vout
5 SDN
6 - Vin
7 + Vin

Shutdown Pin (SDN) Application Note

 

SERIES DC3 SINGLE AND DUAL OUTPUTS
TERMINAL STRIP MODELS

Weight: 190 Grams Typical
All dimensions are in Inches
NOTE: The torque for mounting screws must be 6 to 9 In-Lbs.
Pin No. SINGLE (For Units With Vout <=48V) SINGLE (For Units With Vout>=100V)
1 +Vout +Vout
2 +Vout NC
3 NC NC
4 -Vout NC
5 -Vout -Vout
6 SDN SDN
7 -Vin -Vin
8 NC NC
9 NC NC
10 +Vin +Vin

Shutdown Pin (SDN) Application Note

Pin No. Dual
1 +Vout
2 COMM
3 NC
4 COMM
5 -Vout
6 SDN
7 -Vin
8 NC
9 NC
10 +Vin

Shutdown Pin (SDN) Application Note

 

   
SERIES DC3 - SINGLE OUTPUT - 50 WATTS MAXIMUM
Pico
Part
No.
(Thru Hole)
Pico
Part
No.
(Terminal Strip)
Output
Voltage
(VDC)

Max.
Load
Current
(A)

Max.
Output
Power
(watts)
***

EFF @
Full
Load Typical
(%)*
Output Voltage
Toler
ance
(±%)**
Load
Regulation
10-100%
Load

(±%)**
Line
Regulation @ Full Load
(±%)
Output Voltage Ripple Typical (mv p-p)* Price (Thru Hole)
(US $)
Price (Terminal Strip)
(US $)
DC3-3.3S DC3-3.3ST

3.3

9.09 30 68 2 2 1 75 210.12 227.67
DC3-5S DC3-5ST 5 8.00 40 74 2 2 1 75 210.12 227.67
DC3-5.2S DC3-5.2ST 5.2 7.70 40 74 2 2 1 75 210.12 227.67
DC3-12S DC3-12ST 12 4.16 50 80 2 2 1 75 210.12 227.67
DC3-15S DC3-15ST 15 3.33 50 80 2 2 1 75 210.12 227.67
DC3-24S DC3-24ST 24 2.08 50 84 1 1 1 75 210.12 227.67
DC3-28S DC3-28ST 28 1.79 50 85 1 1 1 75 210.12 227.67
DC3-48S DC3-48ST 48 1.04 50 85 1 1 1 75 210.12 227.67
DC3-100S DC3-100ST 100 0.50 50 82 1 1 1 100 231.19 242.75
DC3-125S DC3-125ST 125 0.40 50 82 1 1 1 125 231.19 242.75
DC3-150S DC3-150ST 150 0.33 50 82 1 1 1 150 231.19 242.75
DC3-175S DC3-175ST 175 0.29 50 81 1 1 1 175 231.19 242.75
DC3-200S DC3-200ST 200 0.25 50 81 1 1 1 200 254.31 267.03
DC3-225S DC3-225ST 225 0.22 50 81 1 1 1 225 254.31 267.03
DC3-250S DC3-250ST 250 0.20 50 81 1 1 1 250 254.31 267.03
DC3-275S DC3-275ST 275 0.18 50 80 1 1 1 300 254.31 267.03
DC3-300S DC3-300ST 300 0.17 50 80 1 1 1 300 279.74 293.73

*Measurment taken at 600 VDC Input
** 10% minimum load required at all times
***Using proper thermal management. Maximum baseplate temperature of +85°C

 

SERIES DC3 - DUAL OUTPUT - 50 WATTS MAXIMUM
Pico
Part
No.
(Thru Hole)
Pico
Part
No.
(Terminal Strip)
Output
Voltage
(VDC)

Max.
Load
Current Per Output
(A)

Max.
Output
Power Per Output
(watts)
***

EFF @
Full
Load Typical
(±%)*
Output Voltage
Toler
ance
(±%)**

Load
Regulation
10-100%
Load

****
(±%)**

Line
Regulation @ Full Load
(±%)
Output Voltage Ripple Typical (mv p-p)* Price (Thru Hole)
(US $)
Price (Terminal Strip)
(US $)
DC3-5D DC3-5DT

±5

4.00 20 75 2 2 1 75 228.50 246.00
DC3-12D DC3-12DT ±12 2.08 25 80 2 2 1 75 228.50 246.00
DC3-15D DC3-15DT ±15 1.66 25 80 2 2 1 75 228.50 246.00
DC3-24D DC3-24DT ±24 1.04 25 84 2 2 1 75 228.50 246.00
DC3-28D DC3-28DT ±28 0.892 25 84 2 2 1 75 228.50 246.00

 

 

 

 

THERMAL CONSIDERATIONS FORMULA
Tc-Ta = /\ =Trca Pout (1/n-1) where,
Trca = Thermal Resistance of case to air
Pout = Output Power in Watts
n = Efficiency
Tc = Case Temperature in °C
Ta = Ambient Temperature in °C

Thermal Considerations

Table 1 DC3 Series
Trca
Baseplate
Heatsink
HSDC3
 
Free Air
7.9
3.9
200 LFM
4.9
2.1
400 LFM
2.5
1.5
600 LFM
2.2
1.2
800 LFM
1.5
1.0
1000 LFM
1.2
0.98


 
 

EXAMPLE 1:

A DC3-24S module has an efficiency of 84%. What is the maximum ambient temperature if 50 Watts of power is needed?

A) In free air:
From Table1: Trca = 7.9
Using relation (2)
/\T=7.9(50)[(1/.84)-1]=75.2°C
Tc-Ta=75.2°C
85-Ta=75.2°C
Ta=9.8°C Maximum

B) In free air with heatsink HSDC3:
Trca=3.9
/\T=3.9(50)[(1/.84)-1]=37.1°C
Ta = 85-37.3=47.9°C

C) With 400 LFM of air flow with no heatsink:
Trca=1.5
/\T=1.5(50)[(1/.84)-1]=14.3°C
Ta=85-14.3=70.7°C

 

EXAMPLE 2:

What would be the maximum output power for a DC3-24S module at an ambient temperature of 50°C with an efficiency of 84%?

A) If the module is used in free air:
From Table 1: Trca=7.9
Using Relation (2)
85-50=7.9 Pout[1/.84-1]
Pout = 35/[7.9(.19)]=23W

B) If the module is used with heatsink HSDC3 and with free air:
Trca=3.9
Pout = 35/[3.9(.19)] = 47.2W

C) If the module is used in an area with forced air at 400 LFM with no heatsink:
Trca=2.5

Pout = 35/[2.5(.19)] = 50W Maximum Output

 


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