DELTA DVTR2800S User Manual

DVTR2800S Series

HIGH RELIABILITY HYBRID

DESCRIPTION

The DVTR series of high reliability DC-DC converters
is operable over the full military (-55 °C to +125 °C)
temperature range with no power derating. Unique
to the DVTR series is a magnetic feedback circuit
that is radiation immune. Operating at a nominal
fixed frequency of 475 kHz, these regulated, isolated
units utilize well controlled undervoltage lockout
circuitry to eliminate slow start-up problems.

These converters are designed and manufactured in
a facility qualified to ISO9001 and certified to MIL­PRF-38534 and MIL-STD-883.

This product may incorporate one or more of the
following U.S. patents:

5,784,266
5,790,389
5,963,438
5,999,433
6,005,780
6,084,792
6,118,673

DC-DC CONVERTERS

FEATURES

• High Reliability

• Very Low Output Noise

• Wide Input Voltage Range: 15 to 50 Volts per

MIL-STD-704

• Up to 40 Watts Output Power

• Output Voltage Trim Up +10%

• Radiation Immune Magnetic Feedback Circuit

• NO Use of Optoisolators

• Undervoltage Lockout

• Indefinite Short Circuit Protection

• Current Limit Protection

• Industry Standard Pinout

• High Input Transient Voltage: 80 Volts for 1 sec

per MIL-STD-704A

• Radiation Hardened Version Available

• Precision Seam Seal or Solder Seal Hermetic

Package

• High Power Density: > 40 W/in

• Custom Versions Available

• Additional Environmental Screening Available

• Meets MIL-STD-461C and MIL-STD-461D EMC

Requirements When Used With a DVMC28 EMI
Filter

• Flanged and Non-flanged Versions Available.

• MIL-PRF-38534 Element Evaluated

Components

3

1X007DSG

11314 4th Avenue
West, Suite 206
Everett, WA 98204

http://www.vpt-inc.com

Figure 1 – DVTR2800S / DVTR2800SF DC-DC Converter

(Not To Scale)

Sales Information:
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

1

DVTR2800S Series

SPECIFICATIONS (T

= -55°C to +125°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)

CASE

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +15°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C

Output Power1 40 Watts Lead Solder Temperature (10 seconds) 270°C

Power Dissipation (Full Load, T

= +125°C) 13 Watts Weight (Maximum) (Un-Flanged / Flanged) (49 / 52) Grams

CASE

Parameter Conditions

STATIC

INPUT

Voltage

Current

4

Ripple Current Full Load, 20Hz to 10MHz - - 50 - - 50 mA

Inhibit Pin Input

4

Inhibit Pin Open Circuit Voltage

UVLO Turn On 12.0 - 14.8 12.0 - 14.8 V

UVLO Turn Off

4

OUTPUT

Voltage

3

Power

3

Current

Ripple Voltage V

Line Regulation V

Load Regulation V

EFFICIENCY 67 - - 72 - - %

LOAD FAULT POWER DISSIPATION

CAPACITIVE LOAD

4

SWITCHING FREQUENCY 400 475 550 400 475 550 kHz

SYNC FREQUENCY RANGE VH - VL = 5V, DC = 20-80% 500 - 600 500 - 600 kHz

ISOLATION 500 V

MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 413 - - 413 - kHrs

Continuous 15 28 50 15 28 50 V

Transient, 1 sec - - 80 - - 80 V

Inhibited - - 6 - - 6 mA

No Load - - 90 - - 90 mA

0 - 1.5 0 - 1.5 V

4

9.0 11.0 13.0 9.0 11.0 13.0 V

11.0 - 14.5 11.0 - 14.5 V

V

OUT TCASE

V

OUT TCASE

= 25°C 3.25 3.30 3.35 4.95 5.00 5.05 V

= -55°C to +125°C 3.20 3.30 3.40 4.875 5.00 5.125 V

0 - 20 0 - 30 W

V

0 - 6.06 0 - 6.0 A

OUT

Full Load, 20Hz to 10MHz - - 50 - - 50 mV

OUT

OUT VIN

OUT

= 15V to 50V - - 20 - - 20 mV

No Load to Full Load - - 50 - - 50 mV

Overload

4

Short Circuit - - 16 - - 16 W

- - 1000 - - 1000

DC

DYNAMIC

Load Step Output Transient V

Load Step Recovery2

Line Step Output Transient

Line Step Recovery

2, 4

4

Turn On Delay V

Turn On Overshoot

OUT

Half Load to Full Load

V

OUT

OUT

= 16V to 40V

V

IN

= 0V to 28V

V

IN

DVTR283R3S DVTR2805S

Units

Min Typ Max Min Typ Max

p-p

p-p

- - 16 - - 16 W

µF

100 - - 100 - - MΩ

- - 400 - - 500 mV

- - 500 - - 500

- 300 600 - 300 600 mV

- 300 500 - 300 500

- - 20 - - 20 mSec

- - 15 - - 25 mV

PK

µSec

PK

µSec

PK

Notes: 1. Dependant on output voltage. 2. Time for output voltage to settle within 1% of its nominal value.

3. Derate linearly to 0 at 135°C. 4. Verified by qualification testing.

1X007DSG

2

DVTR2800S Series

SPECIFICATIONS (T

= -55°C to +125°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)

CASE

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +15°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C

Output Power1 40 Watts Lead Solder Temperature (10 seconds) 270°C

Power Dissipation (Full Load, T

= +125°C) 13 Watts Weight (Maximum) (Un-Flanged / Flanged) (49 / 52) Grams

CASE

Parameter Conditions

STATIC

INPUT

Voltage

Current

4

Ripple Current Full Load, 20Hz to 10MHz - - 50 - - 50 mA

Inhibit Pin Input

4

Inhibit Pin Open Circuit Voltage

UVLO Turn On 12.0 - 14.8 12.0 - 14.8 V

UVLO Turn Off

4

OUTPUT

Voltage

3

Power

3

Current

Ripple Voltage V

Line Regulation V

Load Regulation V

EFFICIENCY 76 - - 77 - - %

LOAD FAULT POWER DISSIPATION

CAPACITIVE LOAD

4

SWITCHING FREQUENCY 400 475 550 400 475 550 kHz

SYNC FREQUENCY RANGE VH - VL = 5V, DC = 20-80% 500 - 600 500 - 600 kHz

ISOLATION 500 V

MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 413 - - 413 - kHrs

Continuous 15 28 50 15 28 50 V

Transient, 1 sec - - 80 - - 80 V

Inhibited - - 6 - - 6 mA

No Load - - 90 - - 90 mA

0 - 1.5 0 - 1.5 V

4

9.0 11.0 13.0 9.0 11.0 13.0 V

11.0 - 14.5 11.0 - 14.5 V

V

OUT TCASE

V

OUT TCASE

= 25°C 11.88 12.0 12.12 14.85 15.0 15.15 V

= -55°C to +125°C 11.70 12.0 12.30 14.625 15.0 15.375 V

0 - 40 0 - 40 W

V

0 - 3.33 0 - 2.67 A

OUT

Full Load, 20Hz to 10MHz - - 50 - - 50 mV

OUT

OUT VIN

OUT

= 15V to 50V - - 20 - - 20 mV

No Load to Full Load - - 50 - - 50 mV

Overload

4

Short Circuit - - 14 - - 14 W

- - 500 - - 500

DC

DYNAMIC

Load Step Output Transient V

Load Step Recovery2

Line Step Output Transient

Line Step Recovery

2, 4

4

Turn On Delay V

Turn On Overshoot

OUT

Half Load to Full Load

V

OUT

OUT

= 16V to 40V

V

IN

= 0V to 28V

V

IN

DVTR2812S DVTR2815S

Units

Min Typ Max Min Typ Max

p-p

p-p

- - 14 - - 14 W

µF

100 - - 100 - - MΩ

- - 700 - - 700 mV

- - 500 - - 500

- 500 900 - 500 900 mV

- 300 500 - 300 500

- - 20 - - 20 mSec

- - 50 - - 50 mV

PK

µSec

PK

µSec

PK

Notes: 1. Dependant on output voltage. 2. Time for output voltage to settle within 1% of its nominal value.

3. Derate linearly to 0 at 135°C. 4. Verified by qualification testing.

1X007DSG

3

DVTR2800S Series

SPECIFICATIONS (T

= -55°C to +125°C, VIN = +28V ± 5%, Full Load, Unless Otherwise Specified)

CASE

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Continuous) 50 VDC Junction Temperature Rise to Case +15°C
Input Voltage (Transient, 1 second) 80 Volts Storage Temperature -65°C to +150°C

Output Power1 40 Watts Lead Solder Temperature (10 seconds) 270°C

Power Dissipation (Full Load, T

= +125°C) 13 Watts Weight (Maximum) (Un-Flanged / Flanged) (49 / 52) Grams

CASE

Parameter Conditions

STATIC

INPUT

Voltage

Current

4

Ripple Current Full Load, 20Hz to 10MHz - - 50 - - 50 mA

Inhibit Pin Input

4

Inhibit Pin Open Circuit Voltage

UVLO Turn On 12.0 - 14.8 12.0 - 14.8 V

UVLO Turn Off

4

OUTPUT

Voltage

3

Power

3

Current

Ripple Voltage V

Line Regulation V

Load Regulation V

EFFICIENCY 72 - - 63 - - %

LOAD FAULT POWER DISSIPATION

CAPACITIVE LOAD

4

SWITCHING FREQUENCY 400 475 550 400 475 550 kHz

SYNC FREQUENCY RANGE VH - VL = 5V, DC = 20-80% 500 - 600 500 - 600 kHz

ISOLATION 500 V

MTBF (MIL-HDBK-217F) AIF @ TC = 55°C - 413 - - 413 - kHrs

Continuous 15 28 50 15 28 50 V

Transient, 1 sec - - 80 - - 80 V

Inhibited - - 6 - - 6 mA

No Load - - 90 - - 90 mA

0 - 1.5 0 - 1.5 V

4

9.0 11.0 13.0 9.0 11.0 13.0 V

11.0 - 14.5 11.0 - 14.5 V

V

OUT TCASE

V

OUT TCASE

= 25°C 5.14 5.20 5.26 2.47 2.50 2.53 V

= -55°C to +125°C 5.07 5.20 5.33 2.46 2.50 2.54 V

0 - 30 0 - 15 W

V

0 - 6.0 0 - 6.0 A

OUT

Full Load, 20Hz to 10MHz - - 50 - - 50 mV

OUT

OUT VIN

OUT

= 15V to 50V - - 20 - - 20 mV

No Load to Full Load - - 50 - - 50 mV

Overload

4

Short Circuit - - 16 - - 18 W

- - 1000 - - 1000

DC

DYNAMIC

Load Step Output Transient V

Load Step Recovery2

Line Step Output Transient

Line Step Recovery

2, 4

4

Turn On Delay V

Turn On Overshoot

OUT

Half Load to Full Load

V

OUT

OUT

= 16V to 40V

V

IN

= 0V to 28V

V

IN

DVTR285R2S DVTR282R5S

Units

Min Typ Max Min Typ Max

p-p

p-p

- - 16 - - 18 W

µF

100 - - 100 - - MΩ

- - 500 - - 400 mV

- - 500 - - 500

- 300 600 - 250 450 mV

- 300 500 - 300 450

- - 20 - - 20 mSec

- - 25 - - 15 mV

PK

µSec

PK

µSec

PK

Notes: 1. Dependant on output voltage. 2. Time for output voltage to settle within 1% of its nominal value.

3. Derate linearly to 0 at 135°C. 4. Verified by qualification testing.

1X007DSG

4

SHUTDO

SU

Y

S

SU

Y

BLOCK DIAGRAM

DVTR2800S Series

PIN 1

28V IN

L1

IN COM

PIN 10

UNDER

VOLTAGE

WN

PRIMARY

HOUSEKEEPING

PPL

INH

PIN 2

SYNC

PIN 9

CONNECTION DIAGRAM

C1

PWM

CONTROL

Q1

Rs1

Figure 2

T1

MAGNETIC
FEEDBACK

D1

C2

VOLTAGE AND

AMPLIFIER

SECONDARY

HOUSEKEEPING

Rs2

CURRENT

PPL

PIN 5

+V OUT

OUT COM

PIN 4

-S

PIN 3

+S

PIN 6

1X007DSG

28 Vdc

1

28V IN

+V OUT

9

SYNC

+

-

2

INH

+S

5

6

LOAD

3

-S

10

IN COM

Figure 3

OUT COM

4

5

INHIBIT DRIVE CONNECTION DIAGRAMS

DVTR2800S Series

128V IN

2INH

OPTIONAL
CAPACITOR

10IN COM

10K

12V

BIAS

OPTOISOLATOR

OPTIONAL
CAPACITOR

128V IN

2INH

10IN COM

Figure 4 – Internal Inhibit Circuit and Recommended Drive Figure 5 – Isolated Inhibit Drive

(Shown with optional capacitor for turn-on delay) (Shown with optional capacitor for turn-on delay)

EMI FILTER HOOKUP DIAGRAM

10K

BIAS

12V

28 Vdc

DVMC28 EMI FILTER DVTR2800S DC-DC CONVERTER

1

28V IN

+

-

5

IN COM

28V OUT

OUT COM

3

2

4

CASE

1

9

2

10

28V IN

SYNC

INH

IN COM

+V OUT

OUT COM

7, 8

5

6

+S

LOAD

3

-S

4

Figure 6 – Converter with EMI Filter

1X007DSG

6