DATEL DSM-5-2.65-3.3-3-D48S, DSM-5-2.65-3.3-3-D24S Datasheet

Surface-Mount, 3.3V and 5V

15Watt, DC/DC Converters

Dual Output

Mixed Voltage, DSM Models

Features

Figure 1. Simplifi ed Schematic

INNOVATION and EX C ELL E N C

E

®

®

■

■

■

■

■

■

■

■

■

■

■

■

■

Regulated 5V and 3.3V outputs

5V @ 2.65Amps/ 3.3V @ 3 Amps capability

15 Watts total output power

Small 1" x 2" x 0.52" SMT package

Available input voltage ranges:
10-18V, 18-36V or 36-75V

No-load stable operation

UL1950 and EN60950 safety approvals

mark available (75V-input models)

Continuous short-circuit protection

Fully isolated, 1500Vdc guaranteed

–40 to +100°C operating temperature

Input under and overvoltage shutdown

Output OVP, thermal shutdown

DATEL, Inc., Mansfi eld, MA 02048 (USA) · Tel: [phone] Fax: [phone] · Email: [e-mail] · Internet: www.datel.com

For surface-mount applications requiring 15 Watts of power from 5V and 3.3V,

DATEL offers a new power sharing DC/DC converter capable of meeting your
output current requirements. The DSM-5/2.65-3.3/3-D48 (36-75V input), DSM­5/2.65-3.3/3-D24 (18-36V input) and DSM-5/2.65-3.3/3-D12 (10-18V input) are fully
isolated DC/DC converters capable of delivering any combination of 5V and 3.3V
output current up to a combined total of 15 Watts of output power.

Housed in a 1" x 2" x 0.52" metal, surface-mount package coated with
electrically non-conductive fi nish, these converters are regulated by a 3.3V control
loop that provides load regulation of ±0.5% for 3.3V output and ±2% for 5V
output. All models include input Pi fi ltering, input overvoltage and undervoltage
shutdown circuitry, output overvoltage protection, output short-circuit and current­limiting protection, and thermal shutdown. All models provide trim capability and
an on/off control function or sync control. Fully synchronous output rectifi cation
provides high effi ciency (86%) and a stable output under no-load conditions.

DSM power sharing modules offer low output ripple and noise perfor­mance, 1500 Vdc isolation voltage, and are fully specifi ed for –40 to +100°C
operation. These devices meet IEC950, UL1950 and EN6950 safety stan­dards; CB reports are available on request. "D48" models are CE marked
(meets LVD requirements)

.

+INPUT

–INPUT

SWITCH

CONTROL

+5V OUTPUT

+3.3V OUTPUT

OUTPUT
RETURN

TRIM

PWM

CONTROLLER

REFERENCE &

ERROR AMP

OPTO

ISOLATION

ON/OFF

CONTROL

(SYNC)

UV & OV

COMPARATORS

THERMAL

SHUTDOWN

PRELIMINARY

15W, DUAL OUTPUT, MIXED-VOLTAGE DC/DC CONVERTERS

XWR Series

Performance Specifi cations and Ordering Guide

➀

PART NUMBER STRUCTURE

V1 Nominal Output Voltage:
5 Volts

5

DSM

2.65-

/

D48-

Input Voltage Range:

D12 = 10-18 Volts (12V nominal)

D24 = 18-36 Volts (24V nominal)

D48 = 36-75 Volts (48V nominal)

I

1 Maximum Output Current:

2.65 Amps

Dual Output/
Surface-Mount Series

3.3 3

/

-

S

V2 Nominal Output Voltage:

3.3 Volts

I2 Maximum Output Current:

3 Amps

Add "S" suffi x as desired

Part Number Suffi xes

DSM 15 Watt DC/DC's are designed so an On/Off Control function

with either positive polarity (no suffi x), or a Sync function ("S" suffi x)

can be added in the pin 3 position.

No Suffi x On/Off Control function (positive polarity) on pin 3

S Sync function on pin 3

➀ Typical at TA = +25°C under nominal line voltage and balanced "full-load" conditions (5V @ 1.5A/3.3V @ 2.25A).
➁ Any combination of 5V/3.3V rated I

OUT current, not to exceed 15 Watts of output power. (See derating graphs.)

➂ Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specifi ed with 0.47µF ceramic
in parallel with 100µF tantalum output capacitors.

Output

Input

➃ Tested from 10% to 100% full load (other output at 10% full load).
➄ Nominal line voltage, no load/balanced full-power condition.

MEC ANICAL SPECIFI CATIONS

2

I/O Connections

Pin Function P36

1 +Input

2 –Input

3 On/Off Control

4 Case

5 +5V Output

6 NC

7 Output Output

8 +3.3V Output

9 Trim

Case C18A

R/N (mVp-p) ➂ Regulation (Max.) Effi ciency

Packag e

V

OUT IOUT ➁ VIN Nom. Range IIN ➄ (Case,

Model (Volts) (Amps) Typ. Max. Line Load ➃ (Volts) (Volts) (mA) Min. Typ. Pinout)

DSM-5/2.65-3.3/3-D12

5 2.65 40 75 ±1% ±2%

12 10-18 70/1450 83% 86% C18A, P36

3.3 3 60 100 ±0.5% ±0.5%

DSM-5/2.65-3.3/3-D24

5 2.65 40 75 ±1% ±2%

24 18-36 40/720 83% 86% C18A, P36

3.3 3 60 100 ±0.5% ±0.5%

DSM-5/2.65-3.3/3-D48

5 2.65 40 75 ±1% ±2%

48 36-75 20/360 83% 86% C18A, P36

3.3 3 60 100 ±0.5% ±0.5%

2.00

(50.80)

0.50

(12.70)

METAL
CASE

INSULATED BASE

4

3

2

1

8

7

6

5

9

0.10

(2.54)

0.110
(2.79)

0.100
(2.54)

0.300
(7.62)

0.500

(12.70)

TOP VIEW

1.00

(25.40)

0.800

(20.32)

4 EQ. SP. @

0.200 (5.08)

0.055
(1.40)

0.020
(0.51)

0.110
(2.79)

0.015
(0.38)

DSM Models

15W, DUAL OUTPUT, MIXED-VOLTAGE DC/DC CONVERTERS

Performance/Functional Specifi cations

Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀

Input

Input Voltage Range:

D12 Models 10-18 Volts (12V nominal)

D24 Models 18-36 Volts (24V nominal)

D48 Models 36-75 Volts (48V nominal)

Overvoltage Shutdown:

D12 Models 19-23 Volts (21V nominal)

D24 Models 37-42 Volts (40V typical)

D48 Models 77-81 Volts (78.5V typical)

Start-Up Threshold:

D12 Models 9-10 Volts (9.3V typical)

D24 Models 16.5-18 Volts (17V typical)

D48 Models 34-36 Volts (35V typical)

Undervoltage Shutdown:

D12 Models 7.0-8.5 Volts (8V typical)

D24 Models 16-17 Volts (16.5V typical)

D48 Models 32.5-35.5 Volts (34.5V typical)

Input Current:

Normal Operating Conditions See Ordering Guide

Standby Mode:

Off, OV, UV, Thermal Shutdown 10mA

Input Refl ected Ripple Current:

Source Impedance <0.1Ω, no external input fi ltering

D12 Models TBD

D24/D48 Models TBD

Internal Input Filter Type Capacitive (1.5µF)

Reverse-Polarity Protection:

D12 Models 1 minute duration, 4A maximum

D24 Models 1 minute duration, 2A maximum

D48 Models 1 minute duration, 1A maximum

On/Off Control: (Pin 3):

➂ ➃ ➅ On = open or 13V - +VIN,

I

IN @ 13V = 800µA

Off = 0-0.8V, I

IN @ 0V = 1mA

Sync: (Option, Pin 4): ➂ ➃

Input Threshold (Rising Edge Active) 1-2.7 Volts

Input Voltage Low 0-0.9 Volts

Input Voltage High 2.8-5 Volts
Input Resistance 35kΩ minimum

Output High Voltage (100µA load) 3.5-4.8 Volts

Output Drive Current 35mA

Input/Output Pulse Width 160-360nsec

Output

VOUT Accuracy:

5V Output ±2% maximum

3.3V Output ±1.5% maximum

Minimum Loading Per Specifi cation 250mA

Minimum Load For Stability No load

Ripple/Noise (20MHz BW)

➄ See Ordering Guide

Line/Load Regulation See Ordering Guide

Effi ciency See Ordering Guide / Effi ciency Cur ves

Cross Regulation:

5V Output

(5V@0.25A, 3.3V@0.25-3A) TBD

3.3V Output

(3.3V@0.25A, 5V@0.25-2.65A) TBD

Trim Range

➁ ±5%

Isolation Voltage:

Input-to-Output 1500Vdc minimum

Input-to-Case TBD Vdc minimum

Output-to-Case TBD Vdc minimum

Output (continued)

Isolation Capacitance 470pF
Isolation Resistance 100MΩ

Current Limit Inception:

5V @ 95% V

OUT (3.3V @ 0.25A) 4-5.5 Amps

3.3V @ 98.5% V

OUT (5V @ 0.25A) 3-4 Amps

Short Circuit Current:

5V Output 5.5 Amps average, continuous current

3.3V Output 3 Amps average, continuous current

Overvoltage Protection: Magnetic feedback

5V Output TBD Volts

3.3V Output TBD Volts

Maximum Capacitive Loading:

D12 Models TBD µF (5V) TBD µF (3.3V)

D24 Models TBD µF (5V) TBD µF (3.3V)

D48 Models TBD µF (5V) TBD µF (3.3V)

Temperature Coeffi cient ±0.02% per °C

Dynamic Characteristics

Dynamic Load Response: ➁

5V (50-100% step to 97.5% V

OUT) 300µsec maximum (3.3V @ 0.25A)

3.3V (50-100% step to 98.5% V

OUT) 300µsec maximum (5V @ 0.25A)

Start-Up Time:

V

IN to VOUT 10msec maximum

On/Off to V

OUT TBD msec maximum

Switching Frequency 250kHz (±25kHz)

Environmental

MTBF: ➆

D12 Models TBD hours

D24 Models TBD hours

D48 Models TBD hours

Operating Temperature: (Ambient):

➁

Without Derating: +60°C

With Derating To +100°C (See Derating Curves)

Case Temperature:

Maximum Operational +100°C

For Thermal Shutdown TBD °C minimum, TBD°C maximum

Storage Temperature –40 to +120°C

Physical

Dimensions 2" x 1" x 0.52" (50.8 x 25.4 x 13.2mm)

Internal Case Connection Case connection via pin 4

Case Material Corrosion resistant steel with

non-conductive, epoxy-based, black

enamel fi nish and plastic baseplate

Pin Material Brass, solder coated, surface-mount leads

Weight TBD ounces 1.4 ounces (39.7 grams)

Primary to Secondary Insulation Level Operational

➀ Balanced "full-load" is 5V @ 1.5A/3.3V @ 2.25A. All models are specifi ed with external

0.47µF ceramic and 100µF tantalum output capacitors.

➁ See Technical Notes/Graphs for details.
➂ The On/Off Control function can be replaced with a Sync function. See Part Number

Suffi xes and Technical Notes for details.
➃ Applying a voltage to On/Off Control (pin 3) when no input power is applied to the

converter can cause permanent damage.
➄ Output noise may be further reduced with the installation of additional external output

capacitors. See Technical Notes.
➅ On/Off control is designed to be driven with open collector or by appropriate voltage

levels. Voltages must be referenced to the –Input (Pin 2).

➆ Demonstrated MTBF available on request.
➇ For conditions with less than minimum loading, outputs remain stable. However, regulation

performance will degrade.

3