SIL25C Series
12 Vin single negative output
DC-DC CONVERTERS C Class Non-isolated
• 25 A current rating
• Input voltage range: 10.2 Vdc to 13.8 Vdc
• nominal output voltage: -5.05 Vdc
• Industry leading value
• Cost optimized design
• Excellent transient response
• Output Voltage adjustability
• Supports silicon voltage migration
• Resulting in reduced design-in and qualification time
• Designed in reliability: MTBF of 3 million hours
per Telcordia SR-332
• Available RoHS compliant
The SIL25C Series is a new high density non-isolated dc-dc converter. The converter has
a wide input range (10.2 Vdc to 13.8 Vdc) and offers a -4.5 Vdc to -5.5 Vdc output voltage
range with a 25 A load. The series offers remote ON/OFF, overtemperature protection and
overcurrent protection as standard. The remote sense feature enables the SIL25C
compensate for voltage drops between the converters output and the load. With full
international safety approvals including EN60950 and UL/cUL60950 the SIL25C reduces
compliance costs and time to market.
All specifications are typical at nominal input, full load at 25 °C ambient unless otherwise stated
1
NEW Product
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
(See Note 1)
-4.5 Vdc to -5.5 Vdc
Output setpoint accuracy Using 1.0% trim resistors
±3.0%
Line regulation
Low line to high line
±1.0% max.
Load regulation
Full load to min. load
±1.0% max.
Min./max. load
0 A/25 A
Ripple and noise
5 Hz to 20 MHz
(See Note 2)
100 mV pk-pk
50 mV rms
Transient response
(See Note 3)
Deviation
75 mV typ.
150 µs recovery to
within regulation band
INPUT SPECIFICATIONS
Input voltage range
Nominal 12 V
10.2-13.8 +Vdc
Input current
No load
Remote OFF
400 mA
30 mA
Input current (max.)
(See Note 4)
14.2 A max. @ Io max.
and Vin = 10.8 V
Input reflected ripple
(See Note 2)
300 mA (pk-pk)
Remote ON/OFF
Logic compatibility
ON
OFF
Logic high
>2.4 Vdc
<1.2 Vdc
Start-up time
(See Note 5)
Power up
Remote ON/OFF
<10 ms
<10 ms
INPUT SPECIFICATIONS (CONTD.)
Turn ON threshold
Turn OFF threshold
10 Vdc
9.5 Vdc
GENERAL SPECIFICATIONS
Efficiency
90%
Switching frequency
Fixed (2 phase) 250 kHz typ. per phase
Approvals and
standards (pending)
(See Note 7)
TÜV Product Services
IEC60950, UL/cUL60950
Material flammability
UL94V-0
Weight
28.3 g (1 oz)
MTBF
Telcordia SR-332
3,000,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
(See Note 8)
Operating ambient,
temperature
Non-operating
-40 ºC to +80 ºC
-40 ºC to +125 ºC
PROTECTION
Short-circuit
Over-temperature
Hiccup, non-latching
Hiccup, non-latching
RECOMMENDED SYSTEM CAPACITANCE
Input capacitance
Output capacitance
(See Note 9)
(See Note 9)
3 x 270 µF
3 x 680 µF
International Safety Standard Approvals (pending)
UL/cUL CAN/CSA 22.2 No. TBD
UL60950 File No. TBD
TÜV Product Service (EN60950) Certificate No. TBD
CB report and certificate to TBD
File Name: sil25c_12_neg.pdf Rev (02): 16 Dec 2005
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