Application information

TS2012FC

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4.4

Low frequency response

If a low frequency bandwidth limitation is required, it is possible to use input coupling

off frequency (see Table 5 to Table 7):

gain setting. There is also a tolerance around the typical values (see Table 5 to Table 7).

Figure 36.

Cut-off frequency vs. input capacitor

4.5

Decoupling of the circuit

TS2012.

The TS2012 has a typical switching frequency of 280 kHz and output fall and rise time about

5 ns. Due to these very fast transients, careful decoupling is mandatory.

the device PVCC pin in order to avoid any extra parasitic inductance or resistance created

by a long track wire. Parasitic loop inductance, in relation with di/dt, introduces overvoltage

that decreases the global efficiency of the device and may cause, if this parasitic inductance

F

CL

1

2

π Z

in

C

in

⋅⋅

⋅

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

=

C

in

1

2

π Z

in

F

CL

⋅⋅

⋅

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

=

0.1

1

1

10

100

G=24dB

Zin=7.5k

G=18dB

Zin=15k

G=6dB, G=12dB

Zin=30k

Tamb=25

Input Capacitor Cin (