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Hi-Rel DC/DC CONVERTER

CGDM TETHYS : 30W POWER

Hi-Rel

Grade

Configurable Multiple Outputs

Metallic case - 1.500 VDC Isolation

• 28 Vdc input compliant with MIL-STD-704D/E

• Highly configurable DC/DC converter

• Up to 6 outputs and 3 independant line

regulations

• Low profile : 0,33 “ ( 8.5mm)

• Nominal Power of 30 W without derating

• Wide temperature range : -40°C/+105°C case

• Galvanic isolation 1.500 VDC

• Integrated LC EMI filter

• Permanent short circuit protection

• External trim and sense adjustment : +/-5%

• Inhibit function

1-General

The TETHYS 30W series is a full family of highly

configurable DC/DC low profile power module

designed for direct implementation on high

density printed circuit boards designed for

aerospace, military and high-end industrial ap-

plications. This module uses a high frequency

fixed swiching technic at 480 KHz providing ex-

cellent reliability, low noise characteristics and

low profile package. This model is available with

nominal input voltages as 12 or 28 volts in range

of 9-36 or 16-40 volts. The serie includes

thousands of output configuration from single,

bi up to six possible output voltages in choices

of 3,3, 5, 12, 15, 24 volts with trim and sense

functions for output voltage adjustment.

No external heatsink is required for the for CGDM

series to supply 30W output power over the

case temperature range of -40°C up to 105°C.

All the modules are designed with LC network

filters to minimize reflected input current ripple

and output voltage ripple.

The modules include undervoltage lock-out, a

permanent short circuit protection an output

overvoltage protection and a thermal protection

to ensure efficient module protections.

The soft-start allows current limitation and

eliminates inrush current during start-up. The

short circuit protection completely protects the

module against short-circuits of any duration by

a shut-down and restores to normal when the

overload is removed. The thermal protection is

adjusted to 110°C and protects the module

against overheat.

The inhibit function is commanded with a low

logic level and disables the module for applica-

tions requiring on/off operations.

The design has been carried out with surface

mount components and is manufactured in a

fully automated process to guarantee high

quality. Each module is tested and burned-in

with a GAIA Converter automated test

equipment.

2-Product Selection

Multiple output model : CGDM-

Input Voltage Range

Permanent

H : 9-36 VDC

J : 16-40 VDC*

Transient

40 VDC/100 ms*

50 VDC/100 ms*

Output

3 : 3.3 VDC

5 : 5 VDC

5B : +/-5VDC

12 : 12 VDC

12B : +/-12VDC

15 : 15 VDC

15B : +/-15VDC

24 : 24 VDC

24B : +/- 24VDC

* Consult factory for details

REDEFINING THE SOURCE OF POWER

Gaia Converter FC97-019.08/06 Revision J

For locations, phone, fax, E-Mail see back cover

CGDM TETHYS Series

2- Product Selection (continued)

Single line model

Dual line model

Triple line model

: CGDM-

30 W first line output : primary output

Hi-Rel

Grade

20 W first line output : primary output

10 W second line output : secondary output

10 W on each line output : primary and

secondary outputs

First line output functions :

Trim function at +/- 5%

Sense function at +/- 5%

Tight regulation below 1%

Indefinite short circuit protection

Independant regulation from primary output

Indefinite short circuit protection

Secondary line output functions :

Input Voltage Range

Designation

Permanent

9-36

VDC

16-40 VDC*

Output Voltage

Designation

12B

15B

24B

Output Voltage

3.3 VDC

5 VDC

+/-5VDC

12 VDC

+/-12VDC

15 VDC

+/-15VDC

24 VDC

+/-24VDC

* for 45 VDC consult factory

Converter Selection Chart

C G D M - Q - 5 - 0 - 12B /T

Input voltage range :

H : 9-36 VDC

J : 16-40 VDC*

Input voltage range :

5 : 5 Vdc, 20W First line

12B : +/-12 Vdc, 10W second line

See table page 1 for complete possibilities

Options :

/T : -55°C start up operating temp.

/S : option for screening and serialization

(consult application note «screening grades»).

Gaia Converter FC97-019.08/06 Revision J

For locations, phone, fax, E-Mail see back cover

CGDM TETHYS Series

3- Electrical Specifications

Data are valid at +25°C, unless otherwise specified.

Parameter

Input

Nominal input voltage

Permanent input

voltage range (Ui)

Transient input voltage

Undervoltage lock-out

(UVLO)

Start up time

Reflected ripple current

Input current in short circuit

mode (Average)

No load input current

Primary Output

Output voltage *

Set Point accuracy

+ Line regulation

+ Load regulation

Output power **

Ripple output voltage ***

3,3V and 5V output

12V output

15V and 24V output

Trim function

Sense function

Secondary Output

Output voltage *

Set point accuracy

Output power**

Ripple output voltage ***

3,3V, 5V and +/-5V output

12V and +/-12V output

15V and +/-15V output

24V and +/-24V output

Line regulation

Load regulation ****

Ui min. to max.

75% load

Nominal

VDC

mVpp

Ui min. to max.

Nominal

75% load

Ambient temperature : +25°c

Ui min. to max.

Maximum

25% to full load

Full temperature range

Maximum

Ui min. to max.

Ui nominal

Full load

BW = 20MHz

Ui nominal

Maximum

Minimum

Maximum

Minimum

VDC

mVpp

Conditions

Limit or

typical

Nominal

Min. - Max.

Maximum

Minimum

Maximum

Units

CGDM-H

Hi-Rel

Grade

CGDM-J

Full temperature range

Full load (consult factory)

Threshold

Ui nominal

Nominal output

Full load : resistive

Ui nominal, full load at

switching freq. BW = 20MHz

Ui nominal

Short-circuit

Ui nominal

No load

VDC

VDC/S

VDC

mApp

9-36

40/0,1

8,5

16-40

50/0,1

3,3V , 5V , 12V , 15V or 24V

Consult factory for other outputs

+/- 1

10, 20 or 30

(limited to respectively 2A, 4A or 6A max.)

+/- 1

-5

3,3V , 5V , 12V , 15V or 24V

+/- 5V , +/- 12V , +/- 15V or +/- 24V

Consult factory for other outputs

+/- 2

10 or 20

(limited to respectively

2A, 4A max)

Ambient temperature : +25°c

Maximum

Ui nominal, 75% load

Full temperature range

Ui min. to max.

Ui nominal

Full load

BW = 20MHz

Ui min. to max.

Full load

Ui nominal

25% to full load

Maximum

+/- 2

10 or 20

(limited to respectively

2A, 4A max)

+/- 1

+/- 2,5

+/- 1

+/- 2,5

Note * : For proper operation the CGDI module requires to install a 22µF chemical or tantalum capacitance accross output terminals.

Note ** : For 9-36V inpt range, the power is derated at 80% at 9V and increases linearly to full power at 12V.

Note*** : The ripple output voltage is the periodic AC component imposed on the output voltage, an aperiodic and random component (noise) has also to be considered. This noise can

be reduced by adding an external capacitor (typically 10nF/rated voltage depending on isolation requirement) connected between the pin Gin and the pin Gout of the converter. This capacitor

should be layed-out as close as possible from the converter.

Note **** : For load regulation characteristics from 0% to full load, please contact factory.

Gaia Converter FC97-019.08/06 Revision J

For locations, phone, fax, E-Mail see back cover

CGDM TETHYS Series

3- Electrical Specifications (continued)

Figure 1 : Typical efficiency versus load

at nominal input

Efficiency (%)

Hi-Rel

Grade

Figure 2 : Typical efficiency versus load

at nominal input

Efficiency (%)

Figure 3 : Typical efficiency versus load

at nominal input

input 12V

7.5

Output Power (W)

22.5

7.5

Output Power (W)

22.5

7.5

Output Power (W)

22.5

(CGDM-H-5-0-0 module)

(CGDM-H-12-0-0 module)

(CGDM-H-15-0-0 module)

Figure 4 : Typical efficiency versus load

at various input

Efficiency (%)

Figure 5 : Typical efficiency versus load

at various input

input 40V

input 28V

input 16V

Efficiency (%)

Figure 6 : Typical efficiency versus load

at various input

input 40V

Efficiency (%)

input 16V

input 28V

input 40V

input 28V

input 16V

7.5

Output Power (W)

22.5

7.5

Output Power (W)

22.5

7.5

Output Power (W)

22.5

(CGDM-J-5-0-0 module)

(CGDM-J-12-0-0 module)

(CGDM-J-15-0-0 module)

Figure 7 : Typical load regulation

characteristics on primary output 5Vdc

at nominal input

5,3

5,2

Output voltage (VDC)

Figure 8 : Typical load regulation

characteristics on primary output 12Vdc

at nominal input

12,3

12,2

Output voltage (VDC)

Figure 9 : Typical load regulation

characteristics on primary output 15Vdc

at nominal input

15,3

15,2

15,1

15,0

14,9

input 28V

14,8

14,7

5,1

5,0

4,9

4,8

4,7

input 28V

12,1

12,0

11,9

11,8

11,7

input 28V

2.5

7.5

2.5

7.5

2.5

7.5

Output power on primary output (W)

(CGDM-J-5-15-0 module)

Output power on primary output (W)

(CGDM-J-12-5-0 module)

Output power on primary output (W) (CGDM-J-15-5-0 module)

Figure 10 : Typical load regulation

characteristics on secondary output

5Vdc at nominal input

5,3

5,2

Output voltage (VDC)

Figure 11 : Typical load regulation

characteristics on secondary output

12Vdc at nominal input

12,3

12,2

Output voltage (VDC)

Figure 12 : Typical load regulation

characteristics on secondary output

15Vdc at nominal input

15,3

15,2

15,1

15,0

14,9

input 28V

14,8

14,7

5,1

5,0

4,9

4,8

4,7

input 28V

12,1

12,0

11,9

11,8

11,7

input 28V

2.5

7.5

2.5

7.5

2.5

7.5

Output power on secondary output (W)

(CGDM-J-15-0-5 module)

Output power on secondary output (W) (CGDM-J-5-0-12 module)

Output power on secondary output(W) (CGDM-J-5-0-15 module)

Gaia Converter FC97-019.08/06 Revision J

For locations, phone, fax, E-Mail see back cover

CGDM TETHYS Series

4- Switching Frequency

Parameter

Switching frequency

Conditions

Full temperature range

Ui min. to max.

No load to full load

Limit or typical

Nominal, fixed

Specifications

Hi-Rel

Grade

9-36 VDC input : 480 KHz

16-40 VDC input : 480 KHz

5- Isolation

Parameter

Electric strength test voltage (basic version)

Electric strength test voltage between

outputs (for outputs of the same line of

regulation)

Electric strength test voltage between

outputs (for outputs of different line of

regulation)

Isolation resistance

Conditions

Input to output

Output to output

Limit or typical

Minimum

Specifications

1.500 VDC / 1 min

No isolation

Output to output

500 VDC

Minimum

1.500 VDC/ / 1 min.

100 MOhm

6- Protection Functions

Characteristics

Output short circuit protection (SCP)

Protection Device

Hiccup circuitry with

auto-recovery

Zener clamp

Thermal device with

hysteresis cycle

Recovery

Automatic

recovery

Automatic

recovery

Limit or typical

Permanent

Maximum

Nominal

Specifications

See section 11

For 3.3v : 4v

For 5v : 6v

For 12v : 14v

For 15v : 17v

115°C

Output overvoltage protection (OVP)

Over temperature protection (OTP)

7- Reliability Data

C a cte

hra ristics

Ma tim btwe fa re

e n e e e n illu

A rd gtoM D K 1 F

cco in IL-H B-2 7

C n itio s

od n

G u dfix d(G

ro n e f)

A o e In a ite , C rg (A )

irb rn, hb d a o IC

T me tu

e p ra re

C sea 4 °

a t 0C

C sea 8 °

a t 5C

C sea 4 °

a t 0C

C sea 8 °

a t 5C

Prfo a ce

e rmn s

40 0 H

8 .0 0 rs

10 0 H

9 .0 0 rs

20 0 H

6 .0 0 rs

15 0 H

1 .0 0 rs

Gaia Converter FC97-019.08/06 Revision J

For locations, phone, fax, E-Mail see back cover