2 YEAR WARRANTY

SIL20C Series

5 Vin and 12 Vin single output

All specifications are typical at nominal input, full load at 25 °C unless otherwise stated

SPECIFICATIONS

File Name: sil20c.pdf Rev (01): 13 Dec 2005

DC-DC CONVERTERS

C Class Non-isolated

1

per Telcordia SR-332

The SIL20C Series is a new high density open frame non-isolated converter for space-sensitive

applications. Each model has a wide input range (4.5 Vdc to 5.5 Vdc or 10.2 Vdc to 13.8 Vdc)

and offer a wide 0.9 Vdc to 3.3 Vdc/5 Vdc output voltage range with a 20 A load. An external

resistor adjusts the output voltage from its pre-set value of 0.9 Vdc to any value up to the

maximum allowed value for that model. Typical efficiencies are 87% for the 5 V input version

and 91% for the 12 V input version at full load conditions. The SIL20C series offers remote

ON/OFF and overcurrent protection as standard. With full international safety approval including

EN60950 and

UL/cUL60950, the SIL20C reduces compliance costs and time to market.

NEW Product

OUTPUT SPECIFICATIONS

Voltage adjustability

5 V input models

0.9-3.3 Vdc

(See Note 5)

12 V input models

0.9-5.0 Vdc

Output setpoint accuracy With 1.0% trim resistors

±2.5%

Line regulation

Low line to high line

±0.2% max.

Load regulation

±1.3% max.

Min/max load

0 A/20 A

Overshoot

5 V input models

3% max.

(at turn on)

12 V input models

1% max.

Ripple and noise

(See Note 1)

See table

5 Hz to 20 MHz

Transient response

Deviation

100 mV

(See Note 2)

200 µs recovery to

within regulation band

INPUT SPECIFICATIONS

Input voltage range

5 V input model

4.5-5.5 Vdc

12 V input model

10.2-13.8 Vdc

Input current

Minimum load

65 mA

Remote OFF

20 mA

Input current (max.)

5 V input model

15 A @ lo max.

(See Note 3)

12 V input model

11 A @ lo max.

Input reflected ripple

(See Note 4)

200 mA

Remote ON/OFF

Logic compatibility

Active high

ON

>2.4 Vdc

OFF

<0.8 Vdc

Start-up time

Power up

<20 ms

(See Note 9)

Remote ON/OFF

<20 ms

International Safety Standard Approvals

UL/cUL CAN/CSA 22.2 No. E139421

UL60950 file No. E139421

TÜV Product Service (EN60950) Certificate No. B 04 08 19870 228

CB report and certificate to US/6415C/UL

INPUT SPECIFICATIONS (CONTD.)

Turn ON threshold

5 Vin

4.5 Vdc

12 Vin

9.0 Vdc

Turn OFF threshold

5 Vin

4.3 Vdc

12 Vin

7.5 Vdc

GENERAL SPECIFICATIONS

Efficiency

See Table

Switching frequency

Fixed

275 kHz typ.

Approvals and

(See Note 4)

TÜV Product Services

standards

IEC60950, UL/cUL60950

Material flammability

UL94V-0

Weight

14.2 g (0.5 oz)

MTBF

Telcordia SR-332

7,963,574 hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

Operating ambient,

0 ºC to +80 ºC

(See Note 10)

temperature

Non-operating

-40 ºC to +125 ºC

PROTECTION

Short-circuit protection

Hiccup, non-latching

RECOMMENDED SYSTEM CAPACITANCE

Input capacitance

(See Note 11)

270 µF/20 m

Ω esr max.

Output capacitance

(See Note 11)

680 µF/10 m

Ω esr max.