TDK iFA Series

Advance Data Sheet: Maxeta

iFA Series

iFA Advance Datasheet 6/6/2005

℡

(877) 498

0099

5/18

Absolute Maximum Ratings:

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

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 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

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 Vo = 0 to 0.1*Vo,nom; on/off =on,

Io=Io,max, Tc=25˚C

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* A

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

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.

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

---

1500

500

Vdc

Basic Insulation

Operational Insulation

Storage Temperature -55 125 ˚C

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

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.