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© 2022 ROHM Co., Ltd.

 

No. 64UG041E Rev.001

 

2022.2

User’s Guide 

BD9E304FP4-EVK-002 

Reference application data 

 

Figure 7. Operating Quiescent Current vs Input Voltage 

V

IN

=24V, V

OUT

=12V, I

OUT

=0A

 

 

Figure 8. Switching Frequency vs Input Voltage 

(V

OUT

=12V, I

OUT

=3A) 

 

Figure 9. Efficiency vs Output Current (V

OUT

=12V) 

 
 
 

 

0

20

40

60

80

100

18

21

24

27

30

33

36

O

p

er

at

in

g

 S

up

pl

C

ur

re

n

t: 

I

O

P

R

A

]

Input Voltage: V

IN

[V]

255

270

285

300

315

330

345

18

21

24

27

30

33

36

S

w

itc

h

in

F

re

q

ue

nc

y:

 f

os

[k

H

z]

Input Voltage: V

IN

[V]

0

10

20

30

40

50

60

70

80

90

100

1

10

100

1000

10000

E

ff

ic

ie

nc

y:

 ƞ

[%

]

Output Current: I

OUT

[mA]

VIN=18V

VIN=24V

VIN=36V

Summary of Contents for BD9E304FP4-EVK-002

Page 1: ...y is fixed at 300 kHz The Light Load Mode control provides good efficiency characteristics in light load conditions which is ideal for applications that needs to lessen the standby power The current m...

Page 2: ...EVK 2 Connect the VCC pin of the DC power supply to the VIN_F pin of the EVK 3 Connect the load to the VOUT_F and GND_F right side in EVK terminal of EVK When using an electronic load connect with the...

Page 3: ...210 25V X5R 20 MSAST32MAB5476MPNDT1 Previus name TMK325ABJ476MM P TAIYO YUDEN 2 C5 Capacitor 120pF 0603 0201 50V C0G 5 GRM0335C1H121JA01 Murata 1 C3 Capacitor 680pF 0603 0201 25V C0G 5 GRM0335C1E681JA...

Page 4: ...formation Number of Layers Material Board Size Copper Thickness 4 FR 4 67 5mm x 67 5mm x 1 6mmt 1oz 35 m The layout of BD9E304FP4 EVK 002 is shown below Figure 3 Top Layer Layout Top View Figure 4 Mid...

Page 5: ...tching Frequency vs Input Voltage VOUT 12V IOUT 3A Figure 9 Efficiency vs Output Current VOUT 12V 0 20 40 60 80 100 18 21 24 27 30 33 36 Operating Supply Current I OPR A Input Voltage VIN V 255 270 28...

Page 6: ...Rise up Waveform VEN 0V 24V IOUT 3A Figure 13 Shut down Waveform VEN 24V 0V IOUT 3A 2 0 1 5 1 0 0 5 0 0 0 5 1 0 1 5 2 0 0 500 1000 1500 2000 2500 3000 Output Voltage Change V CHANGE Output Current IO...

Page 7: ...002 Reference application data continued Figure 14 SW Waveform VIN 24V VOUT 12V IOUT 30 A Figure 15 SW Waveform VIN 24V VOUT 12V IOUT 3A Figure 16 Frequency Response VIN 24V VOUT 12V IOUT 3A VSW 5 V d...

Page 8: ...the Parts List Table 2 For reference Figure 17 shows the DC bias characteristics of GRM32EC72A106KE05 Murata listed as C2 in the Parts list Table 2 Actual capacitance degrades to 5 5 F under the cond...

Page 9: ...9 9 2022 ROHM Co Ltd No 64UG041E Rev 001 2022 2 User s Guide BD9E304FP4 EVK 002 Revision History Date Revision Number Description 14 Feb 2022 001 Initial release...

Page 10: ...ch technical information The Products specified in this document are not designed to be radiation tolerant For use of our Products in applications requiring a high degree of reliability as exemplified...

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