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Advance Data Sheet: Maxeta

TM

 iFA Series

 

©2005 TDK Innoveta Inc.  
iFA Advance Datasheet   6/6/2005 

 

 (877) 498-0099

 

1/18 

 

 

Maxeta iFA Series DC-DC Power Modules 

 

 

 

 

 

24V Input, 28V Output, 602W Full Brick 

 

 

 

    

 

 
 
 
 

 
 

The Maxeta

 iFA series power modules are 

ideally suited for wireless applications to power 
RF power amplifiers. With a typical 89% full 
load efficiency (90% at 80% load), a power 
density of 108W per cubic inch and a total 
power and current output capability of 602W 
and 21.5A respectively, the Maxeta

 Series 

offers the highest efficiency, power density and 
usable output power for 24V input applications 
in a standard full brick package currently 
available. A wide output voltage trim range, -
40% to +10%, remote sensing, and isolated 
remote on/off control are standard features 
enhancing versatility. The Maxeta

 iFA series 

power modules are also suited for other 
telecommunication applications.

Standard Features: 
 

 
 

 

Industry Standard Full Brick 

 

Power density: > 108W / cubic inch 

 

High efficiency: up to 92% 

 

Nominal input efficiency: 89% at 100% load 

 

Nominal input efficiency: 90% at 80% load 

 

Up to 602W of output power in high ambient  

 

Meets basic insulation requirements 

 

Voltage foldback constant current limit 

 

Start-up into pre-biased output bus 

 

User selectable on/off (either positive or 
negative logic) 

 

Wide output voltage adjustment range 

 

Auto-recovery protections: 

 

o

  Input under and over voltage 

o

  Short circuit 

o

  Thermal limit 

 

 

Latched output over-voltage protection 

 

High reliability open frame, SMT construction 

 

Base-plate for improved thermal management 

 

Constant switching frequency 

 

UL 60950 (US and Canada), VDE 0805, CB 
scheme (IEC950)  

 

CE Mark (EN60950)  

 

EMI: CISPR 22 Class A/B with external filters 

 

US 6,618,274. Other patents pending 

 

ISO Certified manufacturing facilities 

 
 

Optional Features:

 

 

 

Short Thru-hole pin 2.794mm (0.110”) 

 

Thru-hole PEM studs for ease of mounting 

 

Single wire current sharing (optional) 

 

Power good Indication (optional) 

 

Auxiliary logic (10V) output (optional) 

 
 

 

Summary of Contents for Maxeta iFA Series

Page 1: ...ons Standard Features Industry Standard Full Brick Power density 108W cubic inch High efficiency up to 92 Nominal input efficiency 89 at 100 load Nominal input efficiency 90 at 80 load Up to 602W of output power in high ambient Meets basic insulation requirements Voltage foldback constant current limit Start up into pre biased output bus User selectable on off either positive or negative logic Wid...

Page 2: ...Voltage Output Current Maximum Output Power Efficiency iFA24021A280V 020 19V to 36V 28V 21 5A 602W 89 iFA24018A280V 020 19V to 36V 28V 18A 504W 90 Feature Set OVP Out Replaces Power Good Pin Length PEM Stud Style Special Code 00 No 0 145 Threaded No 01 No 0 110 Threaded No 02 Yes 0 145 Threaded No 03 Yes 0 110 Threaded No 20 No 0 145 Thru hole No 26 No 0 200 Thru hole Yes Voltage foldback constant...

Page 3: ...noveta Inc iFA Advance Datasheet 6 6 2005 877 498 0099 3 18 Mechanical Specification Unless otherwise specified tolerances are x x 0 5 mm x xx 0 02 in x xx 0 25 mm x xxx 0 010 in 1 2 3 5 6 7 8 9 10 12 4 13 14 15 16 17 Recommended hole pattern top view ...

Page 4: ... Vout 15 TRIM 4 Vin 10 Vout 16 SENSE 5 Vout 11 Not present 17 SENSE 6 Vout 12 AUX OUT 18 Pin base material is copper The maximum module weight is 250g 8 8 oz Heatsink Offering TDK Innoveta Part Number Height Orientation Overall Module Height HS00016 0 50 Transverse 1 00 HS00017 1 00 Transverse 1 50 HS00020 0 50 Longitudinal 1 00 HS00021 1 00 Longitudinal 1 50 Transverse Heatsinks Longitudinal Heat...

Page 5: ... Startup Delay Time from on off 8 mS Vin Vin nom Io Io max Tc 25 C Output Voltage Rise Time 42 60 mS Io Io max Vo 0 1 to 0 9 Vo nom Tc 25 C Inrush Transient 1 A2 S Input Reflected Ripple 5 mApp Vin Vin nom Io Io max 0 to 20MHz See input output ripple measurement figure BW 5 MHz Input Ripple Rejection 41 dB 120Hz Engineering Estimate Telecom 24V battery plant voltage is typically set at 27 24V Caut...

Page 6: ...nd Noise Voltage 13 50 mVrms Vin 48V Io Io min Tc 25 C with a 0 1µF a 10µF ceramic two 220µF low esr aluminum capacitors located 2 inch away See input output ripple measurement figure BW 20MHz Output Voltage Adjustment Range 60 110 Vo nom Po Po max refer to Output Voltage Adjustment figure for Vin min requirement Remote Output Voltage Sense Range 0 5 Vdc Dynamic Response Settling Time to 10 Peak D...

Page 7: ...V Vin 24V Vin 36V Vin 32V Typical Efficiency vs Input Voltage and Load at Ta 25 C Typical Power Dissipation vs Input Voltage and Load at Ta 25 C 27 94 27 945 27 95 27 955 27 96 27 965 27 97 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Output Current A O u tp u t V o lta g e V Vin 19V Vin 24V Vin 36V Vin 32V Typical Output Voltage vs Load Current at Ta 25 Start up from ON OFF switch at nomin...

Page 8: ... Input Voltage V Input C urrent A Io_min 2 1A Io_mid 10 6A Io_max 21 1A Dynamic Load Transient Load step from 33 to 66 of full load with 200Hz High Slew Rate Ch 1 Vo Ch 4 Io Input Start up Current vs Line and Load Current at Ta 25 C 27 95 27 955 27 96 27 965 27 97 27 975 27 98 19 21 23 25 27 29 31 33 35 37 Input Voltage V O u tp u t V o lta g e V Io_min 2 1A Io_mid 10 6A Io_max 21 1A 0 4 8 12 16 2...

Page 9: ...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 otherwise signific...

Page 10: ...uted power architectures The electronic equipment in networking telecom wireless and advanced computer systems operates in similar environments and utilizes vertically mounted printed circuit boards PCBs or circuit cards in cabinet racks The power module is mounted on a 0 062 inch thick 6 layer 2oz layer PCB and is vertically oriented within the wind tunnel Power is routed on the internal layers o...

Page 11: ...cold plate The iFA platform is designed with a base plate with four M3 X 0 5 through threaded mounting fillings for attaching a heatsink or cold plate A non threaded version is also available The addition of a heatsink can reduce the airflow requirement ensure consistent operation and extended reliability of the system With improved thermal performance more power can be delivered at a given enviro...

Page 12: ...endent of the main PWM control loop that reduces the risk of over voltage appearing at the output of the power module during a fault condition If there is a fault in the main regulation loop the over voltage protection circuitry will latch the power module off once it detects the over voltage condition as specified on the electrical data page To remove the module from the latched condition either ...

Page 13: ...veta Inc for details Output Voltage Adjustment The output voltage of the power module is adjustable by the user using an external resistor or by applying external voltage However when the output voltage is increased the input voltage range is limited as shown in the following figure To trim the output voltage up a fixed or variable resistor Rext1 shall be connected between the Vout pin and the sen...

Page 14: ...on Rext2 Vo_down 0 331 4 787591 0 171506Vo_down Trim dow n Resistance vs Vout 1 10 100 1000 10000 16 18 20 22 24 26 28 Output Voltage V Trim Resistance KΩ In order to trim the output voltage from the minimum value 40 down to the maximum value 10 up in a linear fashion a fixed resistor Rext should be connected between the trim pin and the sense pin while a 50KΩ variable resistor Rv shall be connect...

Page 15: ...ood signal The power good pin provides an open collector signal referenced to the output sense pin that is pulled low during normal operation of the power module The power good circuitry will pull the power good pin below 1V while sinking a maximum sink current of 5mA The maximum allowed voltage to the pin is 35V In order for the power good to pull low the following conditions must all be met None...

Page 16: ...h designing for EMC compliance please contact Innoveta technical support Input Impedance The source impedance of the input power feeding the DC DC converter module will interact with the DC DC converter which may cause system instability To minimize the interaction two or more 470µF 50V input electrolytic capacitor s should be present if the source inductance is greater than 4µH Reliability The po...

Page 17: ...ons are typically obtained for each product platform The iFA products have the following certifications UL 60950 US Canada VDE 0805 CB Scheme IEC 950 CE Mark EN60950 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...

Page 18: ... from TDK Innoveta TDK Innoveta Inc 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 ...

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