Special Features
Electrical Specs
150 Watts
BK60C-40
High Efficiency
• High efficiency, 5V@89%
• -40°C to 100°C baseplate operating
temperature (no derating)
• Positive and Negative enable function
• Low output ripple and noise
• High capacitive load limit on start-up
• Remote sense compensation
• Regulation to zero load
• Fixed frequency switching (300 kHz)
Operating temperature (baseplate):
-40°C to +100°C
Storage temperature: -55°C to +105°C
Overtemperature protection: 110°C typical
MTBF: >1 million hours
Input
Input range 36-75 VDC
Input Surge 100V / 100ms
Efficiency 89% @ 3.3V (typ)
Output
Load regulation 10mV typical down to no load
(output below 5V)
Line regulation 10mV typical
(outpt below 5V)
Ripple and noise 200mV p-p max)
Remote sense Up to 0.5V
Output voltage
adjust range ±20% of nominal output
Transient Response 10% max deviation with 25% to 75%
full load (output 5V and above)
200mV
Overvoltage Protection 130% nominal output
(output 5V and above)
160% nominal outpt
(2.2V output)
140% nominal output
(3.3V output)
Current Limit 115% maximum output
Control
Voltage Adjust 90 to 110%
Enable TTL compatible (positive & negative
enable options)
Notes:
1. Nominal values apply with sense pins connected and other
control pins unconnected.
2. Specifications subject to change without notice.
Environmental
Total Power: 150 Watts
Input Voltages: 48V
No. of Outputs: Single
UL UL 1950
CAN22.2-950
TUV EN60950
Safety
Astec Industry Standard
America’s (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662
44
W9959_02_DCDC_001-073_73 2/8/02 3:38 PM Page 44
EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone: 44 (1384) 842-211
Facsimile: 44 (1384) 843-355
AMERICAS
5810 Van Allen Way
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
Ordering Information
ASIA
Units 2111-2116, Level 21
Tower1, Metroplaza
223, Hing Fong Road
Fwai Fong, New Territories
Hong Kong
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
Input Output Efficiency Model Number
Voltage Voltage
48V 1.8V @ 40A 81% min BK60C-048L-018F40H
48V 2.5V @ 40A 84% min BK60C-048L-025F40H
48V 3.3V @ 40A 86% min BK60C-048L-033F40H
NOTES:
Efficiency is measured at full load and Tc=70 Deg C
"N" added to suffix = Negative Enable (Omit suffix for positive enable (default))
Case Material: Metal base, plastic cover
Weight: 2.75 Oz / 78 Grams
Single Output
1. -Vin
2. Case
3. Enable (on/off)
4. +Vin
5. -5V Rtn
6. - Sense
7. Trim
8. + Sense
9. +Out
Notes:
1. 20 mHz bandwidth. An external 2.2 mf ceramic capacitor is recommended to
be placed from +V out to -V out.
2. Requires a 2.2 mf, 100V film capacitor connected between +V in and -V in to
meet FCC class A and ETS300-386-1 requirements for conducted noise.
Consult Factory for filtering information to meet FCC class B, VDE or EIC spec-
ifications.
3. All specifications are typical at nominal line, full load, and 25°C unless
otherwise noted.
4. All specifications subject to change without notice. Mechanical drawings are
for reference only.
5. Please refer to the Technical Reference Notes for more information.
6. Warranty: 1 yr
Pin Assignments
BK60C-40 Astec Industry Standard
2.30
1.900
BOTTOM VIEW
.20 MIN.
.50
[58.4]
[48.26]
NOTE
1
[12.7]
[5.0]
.600
[15.24]
1.400
[35.56]
2.000
[50.80]
2.40
[61.0]
1
2
3
4
5
6
7
8
9
Mounting Inserts
M3 X .5 (4 places)
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