TDK Maxeta iFA Series User Manual

℡ (877) 498

-

0099

Advance Data Sheet: MaxetaTM iFA Series

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

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

Maxeta iFA Series DC-DC Power Modules

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.

• 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)

:

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

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℡ (877) 498

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0099

TDK Innoveta Inc.

Advance Data Sheet: MaxetaTM iFA Series

Ordering information:

Product

Identifier

i F A 24 021 A 280 V -

TDK Innoveta Full Brick

Package

Size

Platform Input

Standard Maxeta 

Voltage

19 - 36V 021 – 21.5 Amps 280 – 28V Single

Feature

Set

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

OVP Out

Replaces

Power

Good

Product Offering

:

Code Input Voltage Output Voltage Output Current Maximum Output

iFA24021A280V-020 19V to 36V 28V 21.5A 602W 89%

iFA24018A280V-020 19V to 36V 28V 18A 504W 90%

Output

Current/

Power

Pin Length PEM Stud

Output

Units

Main

Output

Voltage

Style

# Of

Outputs

(Voltage foldback constant current limit, no

load share, no Power Good, no Aux Output)

Safety

Special Code

Power

Class

Feature Set

0 00

00 – Standard
>00 – See

option table

Efficiency

3320 Matrix Drive, Suite 100
Richardson, Texas 75082

Phone [phone] Toll Free
[phone]
Fax [phone] Toll Free
[phone]

[e-mail]
http://www.tdkinnoveta.com/

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

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℡ (877) 498

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0099

Advance Data Sheet: MaxetaTM iFA Series

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.].

:

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

10

1
2

3

4

Recommended hole pattern (top view)

9

8

7

6

5

141516

12

13

17

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℡ (877) 498

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0099

Advance Data Sheet: MaxetaTM iFA Series

Pin Assignment

:

PIN FUNCTION PIN FUNCTION PIN FUNCTION

1 ON/OFF (+) 7 Vout (-) 13 PWR GOOD

2 ON/OFF (-) 8 Vout (+) 14 Parallel Control

3 Vin (+) 9 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

HS00016 0.50” Transverse 1.00”

HS00017 1.00” Transverse 1.50”

HS00020 0.50” Longitudinal 1.00”

HS00021 1.00” Longitudinal 1.50”

Height Orientation Overall

HS00016

HS00017

Transverse Heatsinks Longitudinal Heatsinks

Module Height

HS00020

HS00021

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

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℡ (877) 498

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Advance Data Sheet: MaxetaTM iFA Series

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 40 Vdc

Transient Input Voltage --- 50 Vdc 100mS max.

Isolation Voltage
Input to Output
Input to Base-plate
Output to Base-plate

Storage Temperature -55 125 ˚C

Operating Temperature Range (Tc) -40 115* ˚C

---

---

---

1500
1500

500

Vdc
Vdc
Vdc

Basic Insulation
Basic Insulation
Operational Insulation

Measured at the location specified in the thermal
measurement figure; maximum temperature varies with
output current and module orientation – see curve in the
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 19

Input Current --- 28.2 37 A Vin = 0 to Vin,max

Input Low End Turn-on Voltage --- 17.9 19 Vdc

Input Low End Turn-off Voltage --- 16.1 19 Vdc

Hysteresis --- 1.8 --- Vdc

Input Over-voltage Turn-off Voltage --- 38.6 --- Vdc

Input High End Turn-on Voltage 36 37.6 --- Vdc

Startup Delay Time from application of input voltage --- 10 --- mS

Startup Delay Time from on/off --- 8 --- mS Vin = Vin,nom, Io=Io,max, Tc=25˚C

Output Voltage Rise Time --- 42 60* mS

Inrush Transient --- --- 1* A2 S

Input Reflected Ripple --- 5 --- mApp

Input Ripple Rejection --- 41 --- dB @120Hz

* Engineering Estimate

#

Telecom 24V battery plant voltage is typically set at 27.24V

Caution: The power modules are not internally fused. An external input line fuse with a maximum value of 40A is required. See the Safety
Considerations section of the data sheet.

24

(28)

#

36 Vdc

When 18V ≤ Vin < 19V, the modules will
continue to operate, but the output
voltage regulation may be out of spec at
full load condition

Vo = 0 to 0.1*Vo,nom;
Io=Io,max, Tc=25˚C

Io=Io,max, Vo=0.1 to 0.9*Vo,nom,
Tc=25˚C

Vin=Vin,nom, Io=Io,max (0 to 20MHz)
See input/output ripple measurement
figure; BW = 5 MHz

on/off =on,

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

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℡ (877) 498

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0099

Advance Data Sheet: MaxetaTM iFA Series

Electrical Data

iFA24021A280V- 000 through - 026: 28V, 21.5A, 602W Output

Characteristic Min Typ Max Unit Notes & Conditions

Output Voltage Initial Set-point

Output Voltage Tolerance

Efficiency

Line Regulation --- 20 56 mV Vin=Vin,min to Vin,max, Io and Tc fixed

Load Regulation --- 10 56 mV Io=Io,min to Io,max, Vin and Tc fixed

Temperature Regulation --- 100 300* mV Tc=Tc,min to Tc,max, Vin and Io fixed

Output Current

Output Current Limiting Threshold

Short Circuit Current

Output Ripple and Noise Voltage

Output Voltage Adjustment Range 60 --- 110 %Vo,nom

Remote Output Voltage Sense Range 0.5* --- --- Vdc

Dynamic Response:

Settling Time to 10% Peak Deviation

Peak Voltage Deviation

Output Voltage Overshoot during Startup 0 0 --- mV Io=Io,max,Tc=25˚C

Switching Frequency --- 150 --- kHz Fixed

Output Over Voltage Protection 31.9 34 35.5* V

External Load Capacitance 450 --- 7,000 ** uF

Isolation Capacitance --- 1000 --- pF

Isolation Resistance 15 --- --- MΩ

Load Share Accuracy --- --- --- % Optional feature

Power Good Pin Max Applied Voltage --- --- --- Vdc Optional feature

Auxiliary Output Voltage --- --- --- Vdc Optional feature

* Engineering Estimate
** Contact TDK Innoveta for applications that require additional capacitance or capacitors with very low esr

:

27.30 28 28.42 Vdc Vin=Vin,nom; Io=Io,max; Tc = 25˚C

27.02 28.70 Vdc Over all rated input voltage, load, and

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

0.22 --- 21.5 A At loads less than Io,min the module will

22* 25 --- A Vo = 0.9*Vo,nom, Tc<Tc,max, Tc = 25˚C

--- 1.4 --- A Vo = 0.25V, Tc = 25˚C

--- 60

--- 13 50* mVrms

---

---

120

200

150* mVpp

---

---

uS

mV

temperature conditions to end of life

continue to regulate the output voltage, but the
output ripple may increase

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.
output ripple measurement figure; BW = 20MHz

Po≤Po,max, refer to “Output Voltage
Adjustment” figure for Vin,min requirement

di/dt = 0.1A/uS, Vin=Vin,nom; Tc = 25˚C, load
step from 50% to 75% of Io,max.
With at least a 10uF ceramic capacitor and two
220uF low esr aluminum or tantalum capacitors
across the output terminals.

Minimum ESR > 1.5mΩ

S

ee input &

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

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