Small size: 56.9 77.2 17.8 (2.2 in.) Output overvoltage protection: Sh

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

Small size: 56.9 77.2 17.8 (2.2 in.) Output overvoltage protection: Sh

Datasheet Thumbnail

Top Searches for this datasheet

912A Power Module: dc-dc Converter; Input, Output,
Small size: 56.9 77.2 17.8 (2.2 in.) Output overvoltage protection: Short-circuit protection Input-to-output isolation external filtering required Remote on/off heat sink required PC-board mountable Operating ambient temperature range: with derating
912A Power Module uses advanced, surface-mount technology.
Applications
1950 Recognized, C22.2 950-95 Certified, 0805 (EN60950, IEC950) Licensed
Meets Class limit
Communications equipment systems Computer equipment Local power distribution Digital circuits Distributed power architecture
Description
912A Power Module dc-dc converter that suitable wide variety applications. module converts delivers power minimum full-load efficiency 78%. precisely regulated output fully isolated from input, allowing versatile polarity configurations grounding connections. module potted nonconductive case that mounts board. external filtering components required. heat sink required, module rated full load natural convection environment.
registered trademark Underwriters Laboratories, Inc. registered trademark Canadian Standards Association. trademark Verband Deutscher Elektrotechniker e.V.
912A Power Module: dc-dc Converter; Input, Output,
Absolute Maximum RatingStresses excess absolute maximum ratings cause permanent damage device. These absolute stress ratings only. Functional operation device implied these other conditions excess those given operations sections data sheet. Exposure absolute maximum ratings extended periods adversely affect device reliability. Parameter Input Voltage Isolation Voltage Operating Ambient Temperature (natural convection) Storage Temperature Symbol Tstg Unit
Electrical SpecificationUnless otherwise indicated, specifications apply module with recommended input filter layout configuration over operating input voltage, resistive load, temperature conditions. Table Input Specifications Parameter Operating Input Voltage Maximum Input Current Figure Inrush Transient Input Reflected-ripple Current MHz, source impedance, full load; Figure Input Ripple Rejection (120 Fusing Considerations CAUTION: This power module internally fused. input line fuse must always used. This encapsulated power module used wide variety applications, ranging from simple stand-alone operation integrated part sophisticated power architecture. preserve maximum flexibility, internal fusing included; however, achieve maximum safety system protection, always input line fuse. safety agencies require normal-blow fuse with maximum rating series with input (see Safety Considerations section). Based information provided this data sheet inrush energy maximum input current, same type fuse with lower rating used. Refer fuse manufacturer's data further information. Symbol 39.5 48.0 60.0 0.54 Unit mAp-p
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
Electrical Specifications (continued)
Table Output Specifications Parameter Output Voltage Point max; Output Voltage (Over operating input voltage, resistive load, temperature conditions until life) Output Regulation: Line 39.5 Load max) Temperature Figure Output Ripple Noise Voltage: Peak-to-peak MHz) Output Current Output Current-limit Inception 10.8 Figure Output Current Limit Figure Output Short-circuit Current Figure Efficiency max; Figure Dynamic Response (IO/t A/10 °C): Load Change from (see Figure Peak Deviation Settling Time peak deviation) Load Change from (see Figure Peak Deviation Settling Time peak deviation) Table Isolation Specifications Parameter Isolation Capacitance Isolation Resistance 1265 Unit Symbol 11.55 11.4 12.00 12.45 12.6 Unit
0.025 0.075
0.05 0.25
0.150
1.95 2.45
mVrms mVp-p
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
General SpecificationParameter Calculated MTBF full load; natural convection) Weight 760,000 Unit hours
Feature SpecificationUnless otherwise indicated, specifications apply over operating input voltage, resistive load, temperature conditions. Parameter Remote On/Off switch controlled; Von/off referenced between VI(-) on/off terminals; Feature Descriptions section): Switch Open-Module Switch Closed-Module Module Specifications: On/Off Current-Switch Closed On/Off Voltage: Switch Closed Switch Open (Ion/off Switch Specifications: Leakage Current-Switch Open (Von/off Output Voltage-Switch Closed (Ion/off 0.61 Turn-on Time full load, within steady state; Figure Output Overvoltage Protection (clamp) Symbol Unit
Ion/off Von/off Von/off Ion/off Von/off clamp
0.25 13.0
14.5
0.61 16.0
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
Characteristic Curve12 OUTPUT VOLTAGE,
INPUT CURRENT,
OUTPUT CURRENT,
8-2925(C)
INPUT VOLTAGE,
8-2924(C)
Figure Typical Input Characteristic with Load (Arrows Indicate Hysteresis)
Figure Typical Output Characteristic
12.36 12.24
OUTPUT VOLTAGE,
12.25
12.12 12.00 11.88 11.76 11.64 11.52 11.75 12.00
EFFICIENCY,
8-460(C).a
OPERATING AMBIENT TEMPERATURE, (°C)
Figure Typical Output Voltage Variation Over Operating Ambient Temperature Range Full Load
OUTPUT CURRENT,
8-2926(C)
Figure Typical Converter Efficiency Function Output Current; Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
Characteristic Curves (continued)
ON/OFF VOLTAGE, OUTPUT VOLTAGE, VON/OFF V/div) V/div)
OUTPUT CURRENT, OUTPUT VOLTAGE, mV/div) (0.2 A/div)
12.00
0.75 0.50 TIME, (0.5 ms/div)
8-2927(C)
A/10
TIME, ms/div)
8-2928(C)
Figure Typical Output Voltage Waveform Step Load Change from Full Output Power,
Figure Typical Output Voltage Start-up Waveform Once Remote On/Off Removed
OUTPUT CURRENT, OUTPUT VOLTAGE, (0.2 A/div) mV/div)
12.00
0.50 0.25
A/10
TIME, (0.5 ms/div)
8-2929(C)
Figure Typical Output Voltage Waveform Step Load Change from max;
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
input source provided with reinforced insulation from other hazardous voltages, including mains. grounded both input output pins kept floating. input pins module operator accessible. Another SELV reliability test conducted whole system, required safety agencies, combination supply source subject module verify that under single fault, hazardous voltages appear module's output.
Test ConfigurationTO OSCILLOSCOPE OSCILLOSCOPE
LTEST IMPEDANCE
BATTERY
8-489(C).a
Note: Input reflected-ripple current measured with simulated source impedance Capacitor offsets possible battery impedance. Current measured input module.
Note: ground either input pins module without grounding output pins. This allow non-SELV voltage appear between output pins ground. power module extra-low voltage (ELV) outputs when inputs ELV. input these units provided with maximum normal-blow fuse ungrounded lead.
Figure Input Reflected-Ripple Test Setup
CONTACT DISTRIBUTION LOSSES SUPPLY LOAD
Feature DescriptionOutput Overvoltage Protection
CONTACT RESISTANCE
8-204(C)
Note: Take measurements module terminals. When socketing, place Kelvin connections module terminals avoid measurement errors socket contact resistance.
Figure Output Voltage Efficiency Measurement Test Setup
output overvoltage clamp consists control circuitry, which independent primary regulation loop, that monitors voltage output terminals. control loop clamp higher voltage point than primary loop (see Feature Specifications table). This provides redundant voltage control that reduces risk output overvoltage.
Overcurrent Protection
Safety ConsiderationFor safety-agency approval system which power module used, power module must installed compliance with spacing separation requirements end-use safety agency standard, i.e., 1950, C22.2 950-95, 0805 (EN60950, IEC950). input source non-SELV (ELV hazardous voltage greater than less than equal Vdc), module's output considered meeting requirements safety extra-low voltage (SELV), following must true:
provide protection fault condition, unit equipped with internal current-limiting endure current limiting unlimited duration. point current-limit inception, unit shifts from voltage control current control. unit operates normally once output current brought back into specified range.
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
Feature Descriptions (continued)
Remote On/Off
turn power module off, user must supply switch control voltage between on/off terminal VI(+) terminal (Von/off). Figure switch must have both high-impedance open state, low-impedance closed state. When switch open, Ion/off module off. When switch closed, Von/off module module remain 0.25 Ion/off 0.61 Note: trace between VI(+) on/off terminals used override remote on/off.
POWER MODULE VI(+) Von/off ON/OFF VO(+) CONTROL
5.11 VI(-) VO(-)
8-130(M)
Figure Typical Remote On/Off Implementation
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
Outline Diagram
Dimensions millimeters (inches). Tolerances: (0.02 in.), x.xx 0.25 (0.010 in.)
View
ON/OFF
Lucent
912A DC-DC Power Module WP-90752LI
IN:DC 48V, 0.3A CLASS OUT:DC 12V,
Rheinland
56.9 (2.24)
MADE
77.2 (3.04)
Side View
17.8 (0.70) 1.02 (0.040)
3.05 (0.120) 4.06 (0.160)
0.79 (0.031) ROUND PIN, PLACES
Bottom View
25.40 (1.000)
15.24 (0.600)
22.86 (0.900)
33.02 (1.300)
(0.35)
(0.35)
63.50 (2.500)
8-2930(C)
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
Recommended Hole Pattern
Component-side footprint. Dimensions millimeters (inches).
(0.35) 63.5 (2.50)
(0.35) 15.2 (0.60)
25.4 (1.00)
22.9 (0.90)
33.0 (1.30)
MODULE OUTLINE
8-2930(C)
Ordering Information
Input Voltage Output Voltage Output Power Device Code 912A Comcode 104386131
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
Note
Lucent Technologies Inc.
912A Power Module: dc-dc Converter; Input, Output,
additional information, contact your Lucent Technologies Account Manager following: POWER SYSTEMS UNIT: Network Products Group, Lucent Technologies Inc., 3000 Skyline Drive, Mesquite, 75149, +1-800-526-7819 (Outside U.S.A.: +1-972-284-2626, +1-888-315-5182) (product-related questions technical assistance) INTERNET: E-MAIL: techsupport@lucent.com ASIA PACIFIC: Lucent Technologies Singapore Pte. Ltd., 750D Chai Chee Road #07-06, Chai Chee Industrial Park, Singapore 469004 Tel. (65) 8041, (65) 8438 CHINA: Lucent Technologies (China) Ltd., SCITECH Place Jian Avenue, Beijing 100004, Tel. (86) 10-6522 5566 ext. 4187, (86) 10-6512 3634 JAPAN: Lucent Technologies Japan Ltd., Mori Building 4-33, Roppongi 1-Chome, Minato-ku, Tokyo 106-8508, Japan Tel. (81) 5561 5831, (81) 5561 1616 LATIN AMERICA: Lucent Technologies Inc., Room 416, 2333 Ponce Leon Blvd., Coral Gables, 33134, Tel. +1-305-569-4722, +1-305-569-3820 EUROPE: Data Requests: DATALINE: Tel. (44) 7000 368, (44) 1189 Technical Inquiries:GERMANY: (49) 95086 (Munich), UNITED KINGDOM: (44) 1344 (Ascot), FRANCE: (33) (Paris), SWEDEN: (46) (Stockholm), FINLAND: (358) 4354 2800 (Helsinki), ITALY: (39) 6608131 (Milan), SPAIN: (34) 1441 (Madrid)
Lucent Technologies Inc. reserves right make changes product(s) information contained herein without notice. liability assumed result their application. rights under patent accompany sale such product(s) information.
Copyright 1999 Lucent Technologies Inc. Rights Reserved Printed U.S.A.
December 1999 DS98-307EPS (Replaces DS90-093EPS)
Printed Recycled Paper

Small size: 56.9 77.2 17.8 (2.2 in.) Output overvoltage protection: Sh

Top Searches for this datasheet

Other recent searches