7.6 SUT6

¡

In the case of forced air cooling (1m/s), please have sufficient

ventilation to keep the temperature of point A in Fig.7.10 at 95C

or below.

Please also make sure that the ambient temperature does not ex-

ceed 85C.

Point A

Fig.7.10 Temperature Measuring Point in the case of Forced Air Cooling

7.7 SUT10

¡

In the case of forced air cooling (1m/s), please have sufficient

ventilation to keep the temperature of point A in Fig.7.11 at 95C or

below.

Please also make sure that the ambient temperature does not ex-

ceed 85C.

Point A

Fig.7.11 Temperature Measuring Point in the case of Forced Air Cooling

8 Peak Current

(Pulse Load)

¡

If a load connected to a converter is a pulse load, you can provide

a pulse current by connecting an electrolytic capacitor externally

to the output side.

Iop

COM

C

+Vin

-Vin

+Vout

-Vout

Pulse Load

External Electrolytic

Capacitor

Vo

D

Vo:Fluctuation of

Output Voltage

Is :Steady-state Current

Iop:Current at Peak

0

0

Iop

Is

D

T

t

Waveform of Pulse

Load Current

Waveform of

Output Voltage

Vo

¡

The average output current lav is expressed in the following for-

mula.

(Iop - Is)Xt

T

lav = ls+

¡

Required electrolytic capacitor C can be obtained from the follow-

ing formula.

(Iop - Iav)Xt

D

Vo

C =

DC-DC Converters PCB Mount Type

Instruction Manual

SU.SUC/SUT-58

June 26, 2020