XC9248 Ver la hoja de datos (PDF) - TOREX SEMICONDUCTOR

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XC9248

18V Driver Transistor Built-In Synchronous Step-Down DC/DC Converter

TOREX SEMICONDUCTOR 

■TYPICAL APPLICATION CIRCUIT

XC9248

Series

【Typical Examples】

MANUFACTURER

PART NUMBER

VALUE

TDK

CLF10040T100N

10μH

TDK

L

TAIYO YUDEN

CLF7045T6R8N

NR6045T4R5M

6.8μH

4.5μH

TAIYO YUDEN

NR6028T2R2N

2.2μH

CIN (*1)

TDK

C2012X5R1E106K

C3216X7R1E106K

10μF/25V 2parallel

10μF/25V 2parallel

C2012X5R1A226M

22μF/10V 2parallel

CL (*1)

TDK

C3216X5R1E226M

C3225X7R1C226M

22μF/25V 2parallel

22μF/16V 2parallel

C4532X7R1E226M

22μF/25V 2parallel

CSS

0.1μF (*2)/10V

CBST

0.1μF/10V

CVL

0.1μF/10V

(*1) Select components appropriate to the usage conditions (ambient temperature, input & output voltage).

(*2) For the coil capacitance value, please refer to P.8 < External soft-start setting >.

<Coil current setting >

For stable operation by current feedback control, the XC9248 series is optimum when the peak-to-peak current (Ipk) in the coil

is set approximately between 0.5A to 1A. The Ipk value can be calculated by using the following equation:

Ipk[A] = (VIN－VOUT ) × VOUT / VIN / 0.5 / L[μH]

L : Coil Inductance

【Examples】

VIN[V]

5.0

5.0

12.0

12.0

18.0

18.0

VOUT[V]

1.0

2.5

3.3

5.0

5.0

12.0

L[μH]

2.2

3.3

6.8

6.8

10.0

10.0

Ipk[A]

0.73

0.76

0.70

0.86

0.72

0.80

7/21

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