AN3394

24/29

Doc ID 018754 Rev 5

Equation (A.I.4)

Neglecting

PA

pulsation

ω

Equation (A.I.5)

Equation (A.I.6)

Finally inserting Equation (A.I.5) in Equation (A.I.3) leads to:

Equation (A.I.7)

Equation (A.I.8)

Equation (A.I.9)

A.2

Serial to parallel equivalence RL impedance, and example of

RL load

Figure 23.

Serial-to-parallel RL equivalent circuit

X

tot

ω C

11

×

R

eq

2

1L

PA

ω

2

C

22

×

×

–

() 1L

PA

ω

2

C

22

C

+

(

×

×

–

()

×ω

2

L

PA

2

×

+

R

eq

C

11

ω

×

×

()

2

1L

PA

C

22

ω

2

×

×

–

()

2

×ω

2

L

PA

C

11

×

×

()

2

+

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

×

–

=

ω

0

1

L

PA

C

22

C

+

(

×

------------------------------------------------

=

ω

1

1

L

PA

C

22

×

--------------------------

=

C

11

1

R

eq

ω

0

×

-----------------------

R

eq

R

out

-----------

1

–

⎝⎠

⎛⎞

×

=

C

22

1

L

PA

ω

0

2

×

--------------------------

C

11

–

=

C

22

1

L

PA

ω

0

2

×

--------------------------

C

11

–

C

input

p

–

–

=