TDK iFA Series

Advance Data Sheet: Maxeta

iFA Series

iFA Advance Datasheet 6/6/2005

℡

(877) 498

0099

6/18

Electrical Data:

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

Characteristic Min Typ Max Unit Notes & Conditions

Output Voltage Initial Set-point

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

Output Voltage Tolerance

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

temperature conditions to end of life

Efficiency

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

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

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

continue to regulate the output voltage, but the

output ripple may increase

Output Current Limiting Threshold

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

Short Circuit Current

--- 1.4 --- A Vo = 0.25V, Tc = 25˚C

--- 60

150* mVpp

Output Ripple and 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 Deviation

Peak Voltage Deviation

---

120

200

---

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.

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 Minimum ESR > 1.5mΩ

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