CW025

CW025 LINEAGEPOWER | Alldatasheet

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 20

Technical content

Features

n Small size: 71.1 mm x 61.0 mm x 12.7 mm n Low output noise n Industry-standard pinout n Metal case n 2:1 input voltage range n Remote on/off (positive logic) n UL* Recognized, CSA† Certified, and VDE Licensed n Within FCC and CISPR Class A radiated limits n Higher accuracy output voltage clamp set point n CE mark meets 73/23/EEC and 93/68/EEC directives‡

Applications

n Distributed power architectures n Telecommunications Options n Isolated case ground pin n Short pins: 2.79 mm ± 0.25 mm n Negative logic remote on/off n Heat sink available for extended operation

Description

The CW025 Triple-Output-Series Power Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to 75 Vdc and provide three outputs. Th ese modules offer extremely low noise levels with industry-standard pinouts in a small footprint. Each highly reliable and efficient unit features remote on/off and current limit. The maximum total output power of the CW025 Triple-Output-Series Power Modules is limited to 25 W. The main output (V O1) is designed to deliver the entire 25 W. The auxiliary outputs (VO2 and VO3) can provide a total of 22.5 W, as long as the total out- put power does not exceed 25 W. Efficiency greater than 80%, a wide operating temperature range, and a metal case are additional f eatures of these modules. * UL is a registered trademark of Underwriters Laboratories, Inc. † CSA is a registered trademark of Canadian Standards Associa- tion. ‡ This product is intended for integration into end-use equipment. All the r equired procedures for CE marking of end-use equip- ment should be followed. (The CE mark is placed on selected pro ducts.)

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periods can adversely affect device reliability. Table 1. Input Specifications

• Operation is specified to 75 V, provided the minimum load on Output 1 is at least 0.75 A. Safety agency reports specify 75 V maximum input.

CAUTION: This power module is not internally fused . An input line fuse must always be used. same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.

Table 2. Output Specifications

20 MHz)

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Table 3. Isolation Specifications Table 2. Output Specifications (

April 2008 36 Vdc to 75 Vdc Input; 25 W CW025 Triple-Output-Series Power Modules: Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions and Design Considerations for further information. Parameter Device Symbol Min Typ Max Unit Remote On/Off (VI = 0 V to 75 V; open collector or equivalent compatible; signal referenced to VI(–) terminal. See Figure 21 and Feature Descriptions.): CW025XXX-M (positive logic): Logic Low—Module Off Logic High—Module On CW025XXX1-M (negative logic): Logic Low—Module On Logic High—Module Off Module Specifications: On/Off Current—Logic Low On/Off Voltage: Logic Low Logic High (I on/off = 0) Open Collector Switch Specifications: Leakage Current During Logic High (Von/off = 10 V) Output Low Voltage During Logic Low (Ion/off = 1 mA) Turn-on Time (IO = 80% of IO, max; VO within ±1% of steady state) Output Voltage Overshoot All All All All All All All I on/off Von/off Von/off Ion/off Von/off 1.0 1.2 1.2 mA V V µA V ms Output Overvoltage Clamp CW025ABK-M CW025ACL-M V VO2 VO3 VO1 VO2 VO3 –15 –19 6.8 –17 6.8 –21 V V V V V V Output Voltage Set-point Adjustment Range All — 90 — 110 %V O, nom

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Figure 1. CW025 Triple-Output-Series Typical Input Figure 2. CW025 Triple-Output-Series Typical Output Figure 3. CW025 Triple-Output-Series Typical Out- Figure 4. CW025 Triple-Output-Series Typical Output

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Figure 9. CW025ABK-M Typical 5 V Output Characteristics Figure 10. CW025ABK-M Typical 12 V Output Characteristics Figure 11. CW025ACL-M Typical 5 V Output Characteristics

36 Vdc to 75 Vdc Input; 25 W

Figure 12. CW025ACL-M Typical 15 V Output Characteristics Note: Loads varied proportionately from minimum to 50% of full load. Figure 13. CW025ABK-M Typical Converter Figure 14. CW025ACL-M Typical Converter

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Figure 15. CW025 Triple-Output-Series Typical Figure 16. CW025 Triple-Output-Series Typical Figure 17. CW025 Triple-Output-Series Typical Figure 18. Input Reflected-Ripple Test Setup

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reduces the risk of output overvoltage. current is brought back into its specified range. of all three outputs is adjusted. adj-up), the output voltage set point (VO, adj) increases. between the VO1 (+) and common terminals. O1 (+) and common terminals. should maintain a logic-low voltage while sinking 1 mA. leakage current of the switch at Von/off = 10 V is 50 µA. Figure 21. Remote On/Off Implementation I(+) is not connected to the case.

Note: Dimensions are in millimeters and (inches). Drawing is not to scale. Figure 22. Thermal Test Setup vection, and radiation to the surrounding environment.

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April 200836 Vdc to 75 Vdc Input; 25 W CW025 Triple-Output-Series Power Modules: Thermal Considerations (continued) Basic Thermal Performance The maximum operating temperature of the CW025 Tri- ple-Output-Series Power Modules at a given operating condition can be predicted by combining the power dis- sipation curves (Figures 23 through 27), the power der- ating curve (Figure 28), and the thermal resistance curve (Figure 29). Use Figures 23 through 28 and the steps below to pre- dict the safe operating region for many different operat- ing and environmental conditions. 1. Calculate the total output power. P O total = (IO1 x VO1 ) + (IO2 x VO2 ) + (IO3 x VO3 ) 2. Use P O total with the appropriate figure (Figure 23 or 24) to determine the fixed losses (PP) associ- ated with operating at PO total. These losses are independent of which output the load is being drawn from. 3. Use the desired output current (IO1 ) with Figure 25 to determine PS1, which is the addi- tional power being dissipated due to loading of the main output. 4. Repeat Step 3 for outputs 2 and 3 using the appropriate figure (Figure 26 or 27) to determine P S2 and PS3, which is the power dissipated due to loading of the auxiliary outputs. 5. Find the total power dissipated (PD total) by add- ing the four power dissipations obtained in Steps 2 through 4. P D total = PP + PS1 + PS2 + PS3 6. Use the estimated total power dissipated (PD total) along with Figure 28 to determine the maximum ambient temperature allowable for a given air velocity. For example, consider the CW025ABK-M power module operating with 54 V input and output currents I O1 = 2.5 A, IO2 = 0.5 A, IO3 = 0.5 A. The total output power (PO total) is 24.5 W. The total power dissipation is PD total = 4.74 W, which is obtained by adding: PP = 4.4 W (from Figure 23) PS1 = 0.22 W (from Figure 25) PS2 = 0.06 W (from Figure 26) PS3 = 0.06 W (from Figure 26) Figure 28 shows that, in natural convection, the maxi- mum ambient temperature that this module can oper- ate at is approximately 67 °C. Keep in mind that the procedure above provides approximations of the temperature and air velocities required to keep the case temperature below its maxi- mum rating. The maximum case temperature, as moni- tored at the point shown in Figure 22, should be maintained at 100 °C or less under all conditions. Air Velocity The air velocity required to maintain a desired maxi- mum case temperature for a given power dissipation and ambient temperature can be calculated using Figure 28 and the following equation: where: n qCA is the thermal resistance from case-to-ambient air (°C/W). n TC, max is the desired maximum case temperature (°C). n TA is the ambient inlet temperature (°C). n PD total is the total power dissipated by the module (W) at the desired operating condition. For example, to maintain a maximum case temperature of 85 °C with an ambient inlet temperature of 65 °C and a power dissipation of 4.74 W, the thermal resistance is: This corresponds to an airflow greater than 0.36 ms (70 fpm) in Figure 28. qCA TC max, TA– qCA £ 85 °C6 5 °C–

Figure 23. CW025ABK-M Fixed Losses, P Figure 24. CW025ACL-M Fixed Losses, P Figure 25. CW025ABK-M, CW025ACL-M Losses, Figure 26. CW025ABK-M, Losses Associated with

12 V Output, P

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Figure 27. CW025ACL-M Losses Associated with Figure 28. Total Power Dissipation vs. Local Figure 29. Case-to-Ambient servative estimate in such instances.

April 2008 36 Vdc to 75 Vdc Input; 25 W CW025 Triple-Output-Series Power Modules: Outline Diagram Dimensions are in millimeters and (inches). Copper paths must not be routed beneath the power module standoffs. Note: For standard modules, V I (+) is internally connected to the case and the CASE GROUND pin is not present. If the CASE GROUND pin is chosen, device code suffix 7, then V I (+) is not connected to the case and the CASE GROUND pin is floating. 8-1053(C).a Top View Side View Bottom View 12.7 (0.50) MAX 5.1 (0.020) 0.51 TIN-PLATED BRASS,

9 PLACES

4.8 (0.19) ON/OFF TRIM 5.1 (0.20) 11.4 (0.45) 3.8 (0.15) MOUNTING INSERTS M3 x 0.5,

4 PLACES

10.16 (0.400) 5.08 (0.200) 50.8 (2.00) 20.32 (0.800) 7.1 (0.28) CASE PIN OPTIONAL VO2 (+) 12.70 (0.500) 7.62 (0.300) 27.94 (1.100) 17.78 (0.700) 25.40 (1.000) 15.24 (0.600) 24.1 (0.95) 61.0 (2.40) MAX 48.3 (1.90) 71.1 (2.80) MAX VO1 (–) VO1 (+) VO3 (–) VO2 & VO3 COM VI(–) VI(+) STANDOFF, 61.0 (2.40) MAX 71.1 (2.80) MAX DC-DC Power Module MADE IN USA PIN 1 INDICATOR

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April 200836 Vdc to 75 Vdc Input; 25 W CW025 Triple-Output-Series Power Modules: Recommended Hole Pattern Component-side footprint. Dimensions are in millimeters and (inches). Recommended hole size for pin: 1.27 mm (0.050 in.). 8-1053(C).a 11.4 (0.45) 3.8 (0.15) 5.1 (0.20) CASE OUTLINE 10.16 (0.400) 48.3 (1.90) 71.1 (2.80) MAX M3 x 0.5 CLEARANCE HOLE

4 PLACES (OPTIONAL)

50.8 (2.00) 12.70 (0.500) 5.08 (0.200) 27.94 (1.100) 17.78 (0.700)7.62 (0.300) 20.32 (0.800) 25.4 (1.000) 15.24 (0.600) 24.1 (0.95) 61.0 (2.40) MAX

April 2008 36 Vdc to 75 Vdc Input; 25 W CW025 Triple-Output-Series Power Modules:

Ordering Information

Table 4. Ordering Information Table

36 V—75 V +5 V, ±12 V 25 W positive CW025ABK-M 107587206

36 V—75 V +5 V, ±15 V 25 W positive CW025ACL-M 107587875

suffixes in numerically descending order followed by the -M suffix, indicating metric (M3 x 0.5 heat sink hardware). Table 5. Options Table Please contact your Lineage Power Ac count Manager or Field Application Engineer for pricing and availability.

April 200836 Vdc to 75 Vdc Input; 25 W CW025 Triple-Output-Series Power Modules: April 2008 DS97-424EPS (Replaces DS97-423EPS) Worl d Wide Headqua rters Lineage Power Corporation

3000 Skyline Drive, Mesquite, TX 75149, USA

+1-800-526-7819 (Ou tsi de U.S.A.: +1-97 2-284-2626 ) www.line agepower.com e-m ail: techsupport1@lineagepower.com A sia-Pacific Head qu art ers Tel: +65 6416 4283 Europe, Middle-East and Afric a Headquarters Tel: +49 89 6089 286 India Headquarters Tel: +91 80 28411633 L inea ge Power reserves the right to make chang es to the produ ct(s) o r inf ormation conta ine d he rein withou t no tice. No liability is assu med a s a resu lt o f thei r use or app lication. No rig hts unde r any pate nt acco mpa ny the sale of a ny su ch p ro duct(s) or informatio n. © 20 08 Li neag e Power Corpo ra tion , (Mesquite, Te xas) All Intern ation al Right s Re se rve d.