25D5/12 - Beta Dyne, Inc. - Datasheet.Directory

Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com

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dyne

25W DC/DC CONVERTER

Industry’s Fastest Settling

DC/DC Converter

Patent No.: US 6,262,901 B1

25W DC/DC CONVERTER DCDC25_DS_REV02.PDF SHEET 1 OF 5

FILTER

-V

OPTO

ISOLATOR

PWM &

SWITCHING

TRANSISTOR

REF

FILTER

RECTIFIERS

ERROR

OUT

VADJ

SYNC

ON/OFF

SYNCHRONOUS

DC/DC

CONVERTER

25T5-15/48

MADE IN USA

Patent No.: US 6,262,901 B1

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dyne

Applications Functional Description

The 25W series is a family of high-performance and high power

density isolated DC/DC converters. The series consists of 46

single, dual and triple modules. State-of-the-art design and

packaging techniques make possible the 20W/in3 power den-

sity without sacrificing functionality or performance. The 25µS

transient response time makes these modules ideal for fast-

switching load applications and the 75µA off-state current dras-

tically reduces the current drain in battery-operated systems.

Key Features

•25µS transient response

•Efficiency up to 86%

•Six-sided shielding

•Soft start

•Single/Dual/Triple

•Short circuit protection

•Adjustable output

•75µA off-state current

•Wide input voltage range (2:1)

•Synchronization

•Industry pinout

Telecom

Computers

Instrumentation

Test & Measurement

Battery Power Systems

Typical Block Diagram of a Single Output

Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com

25W DC/DC CONVERTER DCDC25_DS_REV02.PDF SHEET 2 OF 5

Electrical Specifications

INPUT SPECIFICA TIONS

Input Voltage Range See Model Selection Guide

Input Filter LC

Reverse Polarity Input Current 12 A

Input Surge Current (20µS Spike) 10 A

Short Circuit Current Limit 150 % IIN

Undervoltage Shutdown 8 Vdc

Off State Current 75 µA

Remote ON/OFF Control

Supply ON Open (Open circuit voltage: 12V max.) V

Supply OFF 0 0.8 Vdc

Logic Input Reference -Input

Logic Compatibility TTL Open Collector or CMOS Open Drain

Converter Standby Current 32 mA

PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS

OUTPUT SPECIFICATIONS

Voltage and Current Ratings See Model Selection Guide

Output Voltage Accuracy

Single/Dual Output Models ±1 %

Tripel Output Models; Main ±1 %

Auxiliary Fully loaded 3 ±5 %

Output Voltage Adjustment Single and dual models only 3 ±5 %

Voltage Balance

Dual Outputs Balanced loads ±1 ±2 %

Triple Outputs (Auxiliaries) Balanced loads for auxiliary ±1 ±2 %

Minimum Load 10 % of FL

Ripple & Noise (See App. Note DC-003) 1 2 %VPP of VOUT

Line Regulation

Single/Dual Output Models Minimum VIN to maximum VIN ±1 2 %

Triple Output Models; Main Minimum VIN to maximum VIN ±1 2 %

Auxiliary Minimum VIN to maximum VIN ±5 5 %

Load Regulation

Single Output Models No Load to Full Load ±1 %

Dual Output Models Main Fully Loaded ±1 %

Triple Output Models; Main Main Fully Loaded ±1 %

Auxiliary See Graph 5 6 %

Temperature Coefficient @ FL 0.02 %/°C

Transient Response Time 50% FL to FL to 50% FL 25 µS

Short Circuit Protection All outputs, by input current limiting

Output Short Circuit Duration Continuous

PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS

GENERAL SPECIFICATIONS

Efficiency See Model Selection Guide %

Isolation Voltage (1 min.) 1500 Vdc

Isolation Resistance 109 Ω

Isolation Capacitance 80 pF

Switching Frequency 160 kHz

PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS

Unless otherwise specified, all parameters are given under typical +25°C

with nominal input voltage and under full output load conditions.

Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com

25W DC/DC CONVERTER DCDC25_DS_REV02.PDF SHEET 3 OF 5

ENVIRONMENT AL SPECIFICA TIONS

Operating Temperature Range (Ambient) Industrial -40 +71 °C

Extended -55 +85 °C

Storage Temperature Range -55 +125 °C

Thermal Resistance 5 °C/W

Thermal Turn Off, Case Temperature 95 °C

Thermal Hysterisis 5 10 °C

Derating None

Cooling Free-air convection

EMI/RFI Six-sided continuous shielded metal case

MTBF per MIL-HNBK-217F (Ground benign, +25°C) 718,000 hours

Humidity Up to 95% non-condensing

PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS

PHYSICAL CHARACTERISTICS

Case Size 2×2×0.395in (50.8×50.8×10.03mm)

Case Material Blue coated metal

Weight 1.04oz. (30g)

Shielding Connection

12VIN, 24VIN models -Input (Pin 3)

48VIN models +Input (Pin 4)

PARAMETER CONDITIONS / NOTES MIN TYP MAX UNITS

EXTERNAL SYNCHRONIZATION

All models in the 25W series can be synchronized to an ex-

ternal clock by driving the SYNC pin (pin 2) directly or with an open

collector-open drain (1 TTL load). The driving signal frequency must

be 380kHz ±5% (20% low, 80% high duty cycle).

The PWM used in the 25W series offers bidirectional SYNC

ports, which allow multiple unit synchronization by connecting all

SYNC pins together. In the absence of an external clock, the faster

unit takes control of the SYNC bus and the rest of the units follow.

EXTERNAL TRIMMING OF OUTPUT VOLTAGES

To trim the output voltage DOWN, connect a 5% ¼W resistor

between the + (plus) output and trim pins of the converter. To trim

the output voltage UP, connect a 5% ¼W resistor between the –

(minus) output and trim pin of the converter. For UP/DOWN trim-

ming capability, connect a 10kW potentiometer between the + and

– pins, with the wiper arm connected to the trim pin. The trim resis-

tors/potentiometer can be connected at the converter output pins or

the load. However, if connected at the load, the resistance of the

runs becomes part of the feedback network, improving load regula-

tion. If the load is some distance from the converter, the use of #20

gauge wire is recommended to avoid excessive voltage drop due to

the resistance of the circuit paths.

See our application notes:

DC-001: Testing Transient Response in DC/DC Converters

DC-004: Thermal Consideration for DC/DC Converters

Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com

25W DC/DC CONVERTER DCDC25_DS_REV02.PDF SHEET 4 OF 5

Voltage (Vdc) Current (mA) Reflected Voltage Current Efficiency

Nominal Range No-load Full-load Ripple (mAPP) (Vdc) (mA) Full load (%)

MODEL NUMBER INPUT OUTPUT

Model Selection Guide

25S2.5/12 12 9-18 30 2210 100 2.5 8000 75

25S3.3/12 12 9-18 30 2390 100 3.3 6600 76

25S5/12 12 9-18 30 2160 100 5 4400 85

25S12/12 12 9-18 30 2160 100 12 1830 85

25S15/12 12 9-18 30 2170 100 15 1460 84

25S2.5/24 24 18-36 40 1030 40 2.5 8000 81

25S3.3/24 24 18-36 40 1240 40 3.3 7500 83

25S5/24 24 18-36 40 1210 40 5 5000 86

25S12/24 24 18-36 40 1210 40 12 2080 86

25S15/24 24 18-36 40 1200 40 15 1660 86

25S2.5/48 48 36-72 30 535 40 2.5 8000 78

25S3.3/48 48 36-72 30 620 40 3.3 7500 85

25S5/48 48 36-72 30 620 40 5 5000 84

25S12/48 48 36-72 30 600 40 12 2080 87

25S15/48 48 36-72 30 600 40 15 1660 86

25D5/12 12 9-18 30 2350 80 +5/-5 ±2200 78

25D12/12 12 9-18 30 2260 80 +12/-12 ±910 81

25D15/12 12 9-18 30 2250 80 +15/-15 ±730 81

25D5/24 24 18-36 40 1270 40 +5/-5 ±2500 82

25D12/24 24 18-36 40 1220 40 +12/-12 ±1040 85

25D15/24 24 18-36 40 1210 40 +15/-15 ±830 86

25D5/48 48 36-72 30 630 40 +5/-5 ±2500 83

25D12/48 48 36-72 30 620 40 +12/-12 ±1040 84

25D15/48 48 36-72 30 610 40 +15/-15 ±830 85

25T3.3-5/12 12 9-18 40 2410 120 3.3/±5 3500/±1000 75

25T3.3-12/12 12 9-18 40 2600 120 3.3/±12 3500/±500 75

25T3.3-15/12 12 9-18 40 2610 120 3.3/±15 3500/±410 76

25T5-12/12 12 9-18 40 2680 120 5/±12 2500/±500 76

25T5-15/12 12 9-18 40 2700 120 5/±15 2500/±410 77

25T3.3-5/24 24 18-36 35 1320 50 3.3/±5 3500/±1200 74

25T3.3-12/24 24 18-36 40 1320 50 3.3/±12 3500/±500 74

25T3.3-15/24 24 18-36 45 1320 50 3.3/±15 3500/±410 75

25T5-12/24 24 18-36 45 1250 50 5/±12 2500/±500 82

25T5-15/24 24 18-36 45 1260 50 5/±15 2500/±410 82

25T3.3-5/48 48 36-72 40 680 40 3.3/±5 4000/±1200 77

25T3.3-12/48 48 36-72 40 660 40 3.3/±12 4000/±500 80

25T3.3-15/48 48 36-72 40 650 40 3.3/±15 4000/±410 82

25T5-12/48 48 36-72 40 620 40 5/±12 2500/±500 82

25T5-15/48 48 36-72 40 620 40 5/±15 2500/±410 83

Please contact Beta Dyne for different input voltage range and output voltage combinations

Beta Dyne, Inc. · 110 Elm St, Unit 12 · Bridgewater, MA 02324 · Phone 508-697-1993 · Fax 508-697-2045 · www.beta-dyne.com

25W DC/DC CONVERTER DCDC25_DS_REV02.PDF SHEET 5 OF 5

ON/OFF

VIN 10 F

100V

GND

SYNC 10K

1000 F

500V **

1000 F

500V

100 F

OUT

80 20

GND

SYNC

ON/OFF

(TOP VIEW)

IN 7

-V IN

V ADJ

OUT

25W SINGLE

BOTTOM VI EW

0.10 [2.54]

1.80 [45.72 ]

2.00 SQUARE [50.80]

0.50

[12.70]

0.70

[17.78]

0.90

[22.86]

1.10

[27.94]

0.40

[10.16]

0.80

[20.32]

1.20

[30.48]

1.60

[40.64]

Ø0.040 [1.02] (8P L )

0.395 [10.03] M AX

0.10 [2.54] MI N

CASE

HEADER

DIMENSIONS

in inches [mm]

PIN ASSIGNMENT

SINGLE

Function

ON/OFF

SYNC

-VIN

+VIN

No pin

+VOUT

-VOUT

VOUT ADJ

DUAL

Function

ON/OFF

SYNC

-VIN

+VIN

No pin

+VOUT

GND

-VOUT

VOUT ADJ

TRIPLE

Function

ON/OFF

SYNC

-VIN

+VIN

No pin

+VAUX

+VOUT

GND

-VAUX

Typical connection diagram of 25W Single DC/DC Converter

** OPTIONAL PA RTS