SP6138EB 데이터 시트보기 (PDF) - Signal Processing Technologies

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SP6138EB

Evaluation Board Manual

Signal Processing Technologies 

Step by step design procedures:

a. R2 = 21.8Ω

b. CZ3 = 85pF

c. Let fcrsover=200KHz then:

d. RZ2 = 60.3kΩ

e. CZ2 = 96pF

f. CP1 = 1.1pF

g. RZ3 = 0.75KΩ

h. CF1 = 18pF to stabilize SP6138ER1 internal Error Amplify

The above component values were used as a starting point for compensating the

converter and after laboratory testing the values shown in the circuit schematic of page

1 were used for optimum operation.

Figure 12- Gain/Phase measurement of SP6138EB shown on page 1, cross-over

frequency (fc) is just above 200KHz with a corresponding phase of 45 degrees

Aug 24-06

SP6138 Evaluation Manual

Page 7 of 9

©2006 Sipex Corporation

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