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PTC-02786 Series0 pages
PTC-02786 SERIES
DC/DC CONVERTERS
MINIATURE, HIGH DENSITY,
DUAL OUTPUT
(UP TO 30W)
Applications
Military (Airborne, ground-fix, shipboard), Ruggedized, Telecom, Industrial
Special Features
• Miniature size
• High efficiency
• Wide input range
• Input / Output isolation
• Remote sense
External On/Off Inhibit
Fixed switching frequency (250 KHz)
External synchronization capability
EMI/RFI filters included
> Indefinite short circuit protection with
auto-recovery
' Over-voltage shutdown with
auto-recovery
> Over temperature shutdown with
auto-recovery
Electrical Specifications
DC Input:
DC Input range: 18 to 48VDC,
per MIL-STD-704E
No damage for:
MIL-STD-1275A (100V for 50mSec)
MIL-STD-704A (80V for 0.1 Sec)
Line/Load regulation:
Less than 1 %
(no load to full load, -55°C to +85°C)
Ripple and Noise:
Less than 50mVp-p, typical (max. 1 %)
without external capacitance.
When connected to system capacitance
ripple drops significantly
DC Output:
Output #1 range-2V to 28V
Output #1 current-max. 5A
Output #2 range - 2V to 28V
Output #2 current - max. 5A
Total Output power - 30W
Efficiency:
75% - Typical
(full load, room temperature)
Load Transient Overshoot and
Undershoot
Output resistance at load change of 50%-
100% is 30 -120 mQ (depending on output
voltage). Output back to steady stated within
300 - 500nSec
Isolation
200V between Input and Output
200V between Input and Case
100V between Output and Case
EMI/RFI:
Design to meet or exceed MIL-STD-
461 E:CE102, CS101, CS114, CS115,
CS116, RS101, RS103
Turn on Transient
Voltage overshoot at during power on is
less than 3% nominal voltage
Protections*
Input
• Inrush Current Limiter-
peak value of 5 x lin for less than 50uSec
• Under voltage protection -
unit protects itself (no damage) below
16.5Vdc
• Over voltage protection -
unit protects itself (no damage) above
52Vdc
Output
• Passive tranzorb on outputs -
20% above nominal voltage
• Current limiting - Continuous protection
(10-30% above maximum current) for
unlimited time (Hiccup)
General
• Over temperature protection:
Shutdown at base plate temperature of
+ 105°C (±5°C) Automatic recovery at
base plate temperature lower than
+95°C (±5°C)
Thresholds and protections can be modified / removed - please consult factory.
PTC
Production & Trading Company AG
Gewerbestrasse 9, P.O. Box, CH-6330 Cham, Switzerland
phone 041 740 4554, fax 041 740 4664, http://www.ptcag.ch, e-mail:
FILE: PTC-02786, Page 1 of 4
Rev. A:201 1-06-07
uewin.ch
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