TDK FReta iEB User Manual

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℡ (877) 498

0099

Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Standard Features:

• Size – 58.4mm x 22.9 mm x 12.3 mm (2.30 in. x 0.90 in. x 0.485 in.)

• Long Thru-hole pins 4.57 mm (0.180”)

• High efficiency – greater than 94%

• 2250Vdc isolation voltage

• Meets basic insulation spacing

requirements

• Constant switching frequency

• Industry Standard Footprint

• Remote on/off (negative logic)

• Auto-recovering input over-voltage

protection

• Auto-recovering output over- current protection

• Auto-recovering output short circuit protection

FReta iEB Series DC/DC Power Modules

The FReta Series offers an industry standard 200W Eighth brick power module

featuring a high operating efficiency that results in true useable power. The FReta modules offer a fixed conversion ratio of 4:1. The unregulated power train topology provides a low cost, high performance, high reliability solution that is suitable for distributed power architectures that utilize an intermediate voltage bus to power nonisolated point of load converters.

• Auto-recovering over-temperature protection

• Applying for UL 60950 (U.S. and Canada), VDE 0805, CB scheme (IEC950), CE Mark (EN60950)

• ISO Certified manufacturing facilities

Optional Features:

• Remote on/off (positive logic)

• Short Thru-hole pins 3.68 mm

(0.145”)

48V Input, 200W Output

Eighth Brick

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Ordering information:

Product

Identifier

i E B 48 017 A 120 V -

TDK Innoveta

Package

Size

Eighthbrick

Platform Input

FReta

Voltage

48V -

nominal

Output

Current/

Power

017 – 17A

Output

Units

Amps

Main

Output

Voltage

120 – 12V

# of

Outputs

Single

Safety

Class

Feature Set

0 07

07 – Standard

Option Table:

Feature

Set

00 X X

01 X X

06 X X

07 X X

Positive Logic

On/Off

Negative Logic

On/Off

0.180” Pin Length

0.145” Pin Length

Product Offering:

Code Input Voltage Output Voltage Output Current

iEB48017A120V 38-53V 12V 16.7A 200W 94.5%

Maximum Output

Power

Efficiency

3320 Matrix Drive Suite 100 Richardson, Texas 75082

Phone (877) 498-0099 Toll Free (469) 916-4747 Fax (877) 498-0143 Toll Free (214) 239-3101

support@tdkinnoveta.com http://www.tdkinnoveta.com/

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Mechanical Specification:

Dimensions are in mm [in]. Unless otherwise specified tolerances are: x.x ± 0.5 [0.02], x.xx and x.xxx ± 0.25 [0.010].

Recommended Hole Pattern: (top view)

Pin Assignment:

1 Vin(+) 4 Vo(-)

2 On/Off 5 Vo(+)

3 Vin(-)

Pin base material is copper with plating; the maximum module weight is 30g (1.05 oz).

FUNCTION PIN FUNCTION

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Absolute Maximum Ratings:

Stress in excess of Absolute Maximum Ratings may cause permanent damage to the device

Characteristic Min Max Unit Notes & Conditions

Continuous Input Voltage -0.5 75 Vdc

Transient Input Voltage --- --- Vdc

Isolation Voltage --- 2250 Vdc Basic insulation

Storage Temperature -55 125 ˚C

Operating Temperature Range (Tc)

*Engineering estimation

Measured at the location specified in the thermal

-40 123* ˚C

measurement figure. Maximum temperature varies with model number, output current, and module orientation – see curve in thermal performance section of the data sheet.

Input Characteristics:

Unless otherwise specified, specifications apply over all Rated Input Voltage, Resistive Load, and Temperature conditions.

Characteristic Min Typ Max Unit Notes & Conditions

Operating Input Voltage 38 48 53 Vdc

Maximum Input Current --- --- 6.5* A Vin = 0 to Vin,max

Turn-on Voltage --- 36 --- Vdc

Turn-off Voltage 31* 34.5 --- Vdc

Hysteresis 0.5* 1.5 --- Vdc

Startup Delay Time from application of input voltage

Startup Delay Time from on/off --- 3 --- mS Vo = 0 to 0.1*Vo,nom; Vin = Vi,nom,

Output Voltage Rise Time --- 4 --- mS Io=Io,max,Tc=25˚C, Vo=0.1 to 0.9*Vo,nom

Input Over-voltage Turn-off --- 61 --- Vdc Input rising

Input Over-voltage Turn-on --- 59 --- Vdc Input falling

Input Over-voltage Hysteresis --- 2 --- Vdc

Inrush Transient --- --- 0.2 A2s

Input Reflected Ripple --- 50 --- mApp See input/output ripple and noise

*Engineering estimation

Caution: The power modules are not internally fused. An external input line normal blow fuse with a maximum value of 10A is required; see the Safety Considerations section of the data sheet.

--- 3 --- mS Vo = 0 to 0.1*Vo,nom; on/off =on, Io=Io,max, Tc=25˚C

Io=Io,max,Tc=25˚C

measurements figure; BW = 20 MHz

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

iEB48017A120V-000 through -007: 12V, 17A Output

Electrical Data:

Characteristic Min Typ Max Unit Notes & Conditions

Output Voltage Initial Setpoint --- 12 --- Vdc Vin=Vin,nom; Io=no load(0A); Tc = 25˚C

Output Voltage Tolerance 7.9* 12 13.7 Vdc

Efficiency --- 94.5 --- % Vin=Vin,nom; Io=Io,max; Tc = 25˚C

Line Regulation --- 3.8 --- V Vin=Vin,min to Vin,max; Io=0A; Tc = 25˚C

Load Regulation --- 0.6 --- V

Temperature Regulation --- 50 --- mV Tc=Tc,min to Tc,max; Io=Io,min

Output Current

Output Current Limiting Threshold --- 23 --- A Vo = 0.9*Vo,nom, Tc<Tc,max

Short Circuit Current --- 7 --- A Vo = 0.25V, Tc = 25˚C

Vin=Vin,min 19.5

Vin=Vin,nom 17

Vin=Vin,max

1* ---

Over all rated input voltage, load, and temperature conditions to end of life

Io=Io,min to Io,max; Vin=Vin,nom; Tc = 25˚C

At loads less than Io,min the module will operate correctly, but the output ripple may increase.

--- 100 200*

Output Ripple and Noise Voltage

--- 30 --- mVrms

Dynamic Response: Recovery Time

Transient Voltage

Output Voltage Overshoot during startup --- --- 5 % Vin=Vin,nom; Io=Io,max,Tc=25˚C

Ouput ripple Frequency --- 330 --- kHz Fixed

External Load Capacitance 0 --- 4000*& uF

Isolation Resistance 10 --- --- MΩ

& Contact TDK Innoveta for applications that require additional capacitance or very low esr

Engineering estimation

---

25*

700*

---

mVpp

Measured across one 0.1uF, and 2x22uF ceramic capacitors– see input/output ripple measurement figure; BW = 20MHz

di/dt = 1A/uS, Vin=Vin,nom; load step from 0% to 100% of Io,max

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Electrical Characteristics:

iEB48017A120V-000 through -007: 12V, 17A Output

(%)

Efficiency,

0 2 4 6 8 10 12 14 16 18 20

Output Current (A)

Vin = 38V Vin = 48V Vin = 53V

iEB48017A120V-000 Typical Efficiency vs. Input Voltage at Ta=25 degrees.

Output Voltage (V)

0 2 4 6 8 10 12 14 16 18 20

Vin = 38V Vin = 48V Vin = 53V Vin = 42V

iEB48017A120V-000 Typical Output Voltage vs. Load Current at Ta = 25 degrees

Output Current (A)

Power Dissipation (W)

0 2 4 6 8 10 12 14 16 18 20

Output Current (A)

Vin = 38V Vin = 48V Vin = 53V

iEB48017A120V-000 Typical Power Dissipation vs. Input Voltage at Ta=25 degrees

iEB48017A120V-001 Typical startup characteristic from on/off at full load, 1mS/div. Lower trace - on/off signal 2V/div, upper trace – output voltage 5V/div.

iEB48017A120V-000 Typical startup characteristic from input voltage application at full load, 1mS/div. Lower trace - input voltage 20V/div, Upper trace – output voltage 5V/div

iEB48017A120V-000 Typical transient response 10uS/div. Output voltage response to load step from 0% to 100% of full load with output current slew rate of 1A/uS, Upper trace – output voltage 1V/div.

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Electrical Characteristics (continued):

iEB48017A120V-000 through -007: 12V, 17A Output

Output Voltage (V)

0 2 4 6 8 10 12 14 16 18 20 22 24 26

Output Current (A)

Vin = 38V Vin = 48V Vin = 53V

iEB48017A120V-000 Typical Output Current Limit Characteristics vs. Input Voltage at Ta=25 degrees.

iEB48017A120V-000 Typical Output Ripple at nominal Input voltage and full load at Ta=25 degrees

Input Current (A)

31 33 35 37 39 41 43 45 47 49 51 53

Input Voltage (V)

Io_min = 0A Io_mid = 10.1A Io_max = 20.1A

iEB48017A120V-000 Typical Input Current vs. Input Voltage Characteristics

14 12 10

8 6 4 2

Output Voltage (V)

31 33 35 37 39 41 43 45 47 49 51 53

Input Voltage (V)

Io_min = 0A Io_mid = 10.1A Io_max = 20.1A

iEB48017A120V-000 Typical Output Voltage vs. Input Voltage Characteristics

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Thermal Performance:

iEB48017A120V-000 through -007: 12V, 17A Output

Output Current (A)

25 35 45 55 65 75 85 95 105 115 125

0.5 m/s (100 LFM)

1.0 m/s (200 LFM)

2.0 m/s (400 LFM)

Tc MAX

Temperature (

iEB48017A120V-000 maximum output current vs. ambient temperature at nominal input voltage for airflow rates natural convection (60lfm) to 400lfm with airflow from pin 3 to pin 1.

Output Current (A)

25 35 45 55 65 75 85 95 105 115 125

iEB48017A120V-000 maximum output current vs. ambient temperature at nominal input voltage for airflow rates natural convection (60lfm) to 600lfm with airflow from output to input.

Derating Factor

0.5 m/s (100 LFM)

1.0 m/s (200 LFM)

2.0 m/s (400 LFM) Tc MAX

Temperature (

1.3

1.2

1.1

1.0

0.9

0.8

0.7

35 40 45 50 55 60

Input Voltage (V)

iEB48017A120V-000 thermal measurement location – top view

Both the thermal curves provided and the example given above are based upon measurements made in TDK Innoveta’s experimental test setup that is described in the Thermal Management section. Due to the large number of variables in system design, TDK Innoveta recommends that the user verify the module’s thermal performance in the end application. The critical component should be thermo coupled and monitored, and should not exceed the temperature limit specified in the derating curve above. It is critical that the thermocouple be mounted in a manner that gives direct thermal contact or significant measurement errors may result. TDK Innoveta can provide modules with a thermocouple pre-mounted to the critical component for system verification tests.

iEB48017A120V-000 typical current derating versus line voltage with airflow = 1m/s (200lfm) and load current greater than 4A.

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Thermal Management:

An important part of the overall system design process is thermal management; thermal design must be considered at all levels to ensure good reliability and lifetime of the final system. Superior thermal design and the ability to operate in severe application environments are key elements of a robust, reliable power module.

A finite amount of heat must be dissipated from the power module to the surrounding environment. This heat is transferred by the three modes of heat transfer: convection, conduction and radiation. While all three modes of heat transfer are present in every application, convection is the dominant mode of heat transfer in most applications. However, to ensure adequate cooling and proper operation, all three modes should be considered in a final system configuration.

The open frame design of the power module provides an air path to individual components. This air path improves convection cooling to the surrounding environment, which reduces areas of heat concentration and resulting hot spots.

Test Setup: The thermal performance data of the power module is based upon measurements obtained from a wind tunnel test with the setup shown in the wind tunnel figure. This thermal test setup replicates the typical thermal environments encountered in most modern electronic systems with distributed power architectures. The electronic equipment in networking, telecom, wireless, and advanced computer systems operates in similar environments and utilizes vertically mounted PCBs or circuit cards in cabinet racks.

The power module, as shown in the figure, is mounted on a printed circuit board (PCB) and is vertically oriented within the wind tunnel. The cross section of the airflow passage is rectangular. The spacing between the top of the module and a parallel facing PCB is kept at a constant (0.5 in). The power module’s orientation with respect

to the airflow direction can have a significant impact on the module’s thermal performance.

Thermal Derating: For proper application of the power module in a given thermal environment, output current derating curves are provided as a design

Module Centerline

AIRFLOW

76 (3.0)

Air Velocity and Ambient Temperature Measurement Location

Wind Tunnel Test Setup Figure

in millimeters and (inches).

Air Passage Centerline

Dimensions are

guideline on the Thermal Performance section for the power module of interest. The module temperature should be measured in the final system configuration to ensure proper thermal management of the power module. For thermal performance verification, the module temperature should be measured at the component indicated in the thermal measurement location figure on the thermal performance page for the power module of interest. In all conditions, the power module should be operated below the maximum operating temperature shown on the derating curve. For improved design margins and enhanced system reliability, the power module may be operated at temperatures below the maximum rated operating temperature.

Adjacent PCB

I R F L O

12.7 (0.50)

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Heat transfer by convection can be enhanced by increasing the airflow rate that the power module experiences. The maximum output current of the power module is a function of ambient temperature (T

) and airflow rate as shown in the

AMB

thermal performance figures on the thermal performance page for the power module of interest. The curves in the figures are shown for natural convection through 2 m/s (400 ft/min). The data for the natural convection condition has been collected at 0.3 m/s (60 ft/min) of airflow, which is the typical airflow generated by other heat dissipating components in many of the systems that these types of modules are used in. In the final system configurations, the airflow rate for the natural convection condition can vary due to temperature gradients from other heat dissipating components.

Operating Information:

Over-Current Protection: The power

modules have current limit protection to protect the module during output overload and short circuit conditions. During overload conditions, the power modules may protect themselves by entering a hiccup current limit mode. The modules will operate normally once the output current returns to the specified operating range

Thermal Protection: When the power modules exceed the maximum operating temperature, the modules may turn off to safeguard the power unit against thermal damage. The module will auto restart as the unit is cooled below the over temperature threshold.

Remote On/Off: - The power modules have an internal remote on/off circuit. The user must supply an open-collector or compatible switch between the Vin(-) pin and the on/off pin. The maximum voltage generated by the power module at the on/off terminal is 15V. The maximum allowable leakage current of the switch is 50uA. The switch must be capable of maintaining a low signal Von/off < 1.2V while sinking 1mA.

The standard on/off logic is positive logic. The power module will turn on if terminal 2 is left open and will be off if terminal 2 is connected to terminal 3. If the positive logic circuit is not being used, terminal 2 should be left open.

An optional negative logic is available. The power module will turn on if terminal 2 is connected to terminal 3, and it will be off if terminal 2 is left open. If the negative logic feature is not being used, terminal 2 should be shorted to terminal 3.

Vin (+)

On/ Off

Vin(-)

On/Off Circuit for positive or negative logic

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

EMC Considerations: TDK Innoveta power modules are designed for use in a wide variety of systems and applications. For assistance with designing for EMC compliance, please contact TDK Innoveta technical support.

Input Impedance:

The source impedance of the power feeding the DC/DC converter module will interact with the DC/DC converter. To minimize the interaction, a 33-100uF input electrolytic capacitor should be present if the source inductance is greater than 2uH.

Reliability:

The power modules are designed using TDK Innoveta’s stringent design guidelines for component derating, product qualification, and design reviews. Early failures are screened out by both burn-in and an

automated final test. The MTBF is calculated to be greater than 3.9M hours at full output power and Ta = 40˚C using the Telcordia SR-332 calculation method.

Improper handling or cleaning processes can adversely affect the appearance, testability, and reliability of the power modules. Contact TDK Innoveta technical support for guidance regarding proper handling, cleaning, and soldering of TDK Innoveta’s power modules.

Quality:

TDK Innoveta’s product development process incorporates advanced quality planning tools such as FMEA and Cpk analysis to ensure designs are robust and reliable. All products are assembled at ISO certified assembly plants.

Input/Output Ripple and Noise Measurements:

12uH

1 2

Battery

220uF

esr<0.1 100KHz

33uF

esr<0.7 100KHz

Vinput

Voutput

Cext

RLoad

Ground Plane

The input reflected ripple is measured with a current probe and oscilloscope. The ripple current is the current through the 12uH inductor.

The output ripple measurement is made approximately 9 cm (3.5 in.) from the power module using an oscilloscope and BNC socket. The capacitor Cext is located about 5 cm (2 in.) from the power module; its value varies from code to code and is found on the electrical data page for the power module of interest under the ripple & noise voltage specification in the Notes & Conditions column.

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Advance Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Safety Considerations:

Check with TDK Innoveta for the current status of safety approval on the iEB product family. For safety agency approval of the system in which the DC-DC power module is installed, the power module must be installed in compliance with the creepage and clearance requirements of the safety agency. The isolation is basic insulation. For applications requiring basic insulation, care must be taken to maintain minimum creepage and clearance distances when routing traces near the power module.

As part of the production process, the power modules are hi-pot tested from primary and secondary at a test voltage of 1500Vdc.

To preserve maximum flexibility, the power modules are not internally fused. An external input line normal blow fuse with a maximum value of 10A is required by safety agencies. A lower value fuse can be selected based upon the maximum dc input current and maximum inrush energy of the

When the supply to the DC-DC converter is less than 60Vdc, the power module meets all of the requirements for SELV. If the input voltage is a hazardous voltage that exceeds 60Vdc, the output can be considered SELV only if the following conditions are met:

1) The input source is isolated from the ac mains by reinforced insulation.

2) The input terminal pins are not accessible.

3) One pole of the input and one pole of the output are grounded or both are kept floating.

4) Single fault testing is performed on the end system to ensure that under a single fault, hazardous voltages do not appear at the module output.

Warranty:

TDK Innoveta’s comprehensive line of power solutions includes efficient, highdensity DC-DC converters. TDK Innoveta offers a three-year limited warranty. Complete warranty information is listed on our web site or is available upon request from TDK Innoveta.

power module.

3320 Matrix Drive Suite 100 Richardson, Texas 75082

Phone (877) 498-0099 Toll Free (469) 916-4747 Fax (877) 498-0143 Toll Free (214) 239-3101

support@tdkinnoveta.com http://www.tdkinnoveta.com/

Information furnished by TDK Innoveta is believed to be accurate and reliable. However, TDK Innoveta assumes no

responsibility for its use, nor for any infringement of patents or other rights of third parties, which may result from its use. No

license is granted by implication or otherwise under any patent or patent rights of TDK Innoveta. TDK Innoveta components

are not designed to be used in applications, such as life support systems, wherein failure or malfunction could result in injury

or death. All sales are subject to TDK Innoveta’s Terms and Conditions of Sale, which are available upon request.

Specifications are subject to change without notice.

is a trademark or registered trademark of TDK Corporation.

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TDK FReta iEB User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual