Datasheet > DMA21248S12

DMA21248S12

更新时间： 2024-11-18 06:54:11

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XPPOWER		/
页数	文件大小	规格书
2页	83K
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DC-DC Converter

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DMA21248S12 数据手册

212 Watts

xppower.com

DMA Series

•

Open Frame Telecom DC-DC Converter

-48 VDC Input

ETSI Compliant

NEBS Compliant

5 V Standby & 12 V Fan Outputs

Remote On/Off & Power Good Signal

AC Input Version Available (EMA212)

Specification

Input

General

Input Voltage Range

• 48 VDC nominal (36 - 75 VDC).

Efficiency

• 88% typical

Can be configured as -48 VDC input

Isolation Voltage

• 1500 VDC Input to Output (basic

insulation), 1000 VDC Input to Ground,

500 VDC Output to Ground.

Input Current

• 5 A typical. 7 A max.

Input Reverse Voltage • Continuous protection with

Protection

automatic recovery

Switching Frequency

Power Density

Signals

• 60 kHz typical

• 11 W/In³

Input Transient

• Compliant with ETSI EN300 132:2003

Undervoltage Lockout • 32 - 35V DC

Protection

• Combined input & DC OK - Open collector

referenced to output 0 V, transistor

normally off when input & output good.

Input fail provides ≥5 ms warning of loss

of output from input failure. DC OK

Fusing

• 15 A F rated in -ve line

Output

provides warning of DC output failure.

Output Voltage

• V1: 12 V, see table

• Not fitted

MTBF

• 550 kHrs per MIL-HDBK-217F

Output Voltage Trim

Minimum Load

Environmental

• 10% minimum load required on V1 to

meet all specification parameters of V2 &

V3.

Operating Temperature • 0 °C to +50 °C with full load, derate

linearly to 50% load at 70 °C with force

cooling 10CFM minimum

Line Regulation

Load Regulation

Setpoint Accuracy

• V1: 0.5%, V2: 5%, V3: 3% of nominal

with input variation of 36-75 VDC

Cooling

• Forced cooled (see operating temperature)

• 0 to 95% RH non condensing. ^(1,3)

Operating Humidity

Storage Temperature

Storage Humidity

Operating Altitude

Shock

• V1: 1%, V2: 5%, V3: 3% of nominal

with load variation 10-100%

(2,3)

• -40 °C to +80 °C.

• 0 to 95% RH non condensing.^(2,3)

• 3000m.⁽³⁾

• V1: 1%, V2: 5%, V3: 3% of nominal

with 48V DC input and 50% load

Turn-on Time

• 2 s typical from application of DC input

•

3 shocks in each axis (total 18 shocks)

(1,4)

Transient Response

• <4% deviation with a 50-75-50% load

change at 1 A/µs. Output returns to within

1% in less than 500 µs

30g 11ms (half sine).

(1,5)

Vibration

•

2g, 10 - 500Hz 10 sweeps.

Ripple & Noise

• 1% max pk-pk 20MHz bandwidth

EMC & Safety

Overvoltage Protection • V1:115-140% of nominal, recycle input

Emissions

• EN61204-3 2000, EN55022 class A

conducted & radiated, ETSI EN 300 132-2

2003, ETSI 300 386-1 1994, NEBS GR-

1089-CORE issue 4

DC to reset

Overload Protection

• V1:110-125% of max current

Short Circuit Protection • Continuous protection, trip and restart

(hiccup mode) characteristic

EFT/Burst

• EN61000-4-4 level 1 Perf Criteria A, ETSI

300 386-1 1994

Temperature

Coefficient

• 0.02%/°C (after 20 minute warm up)

Surge

• EN61000-4-5 level 1 Perf Criteria A,

Conducted Immunity

• EN61000-4-6 level 2 Perf Criteria A, ETSI

300 386-1 1994, NEBS GR-1089-Core

issue 4

Notes

Narrow & Wide

Band Noise

• ETSI EN 300 132-2 2003

1. Compliant with ETS 300 019-1-3 May 1992 + ammendment 1 June 1997 class 3.1.

2. Compliant with ETS 300 019-1-1 Feb 1992 class 1.1, ETS 300 019-1-2 Feb 1992 class 2.2.

3. Compliant with NEBS GR-63-Core issue 3.

4. Compliant with EN60068-2-27.

5. Compliant with EN60068-2-6.

Safety Approvals

• EN60950-1:2006, CSA-C22.2 No. 60950-

1-03, CB Report IEC60950-1:2005,

CE Marked to LVD

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