AN1623 - APPLICATION NOTE

6/6

Figure 4 : Simplify model for voltage precision calculation

3

CONCLUSION

This application note relative to the TSM1011

shows how very simple it is to calculate a current

and voltage variation in order to discern how

many parameters characterize the precision of

regulation loop.

In accordance with market needs, current and

voltage precision in the TSM1011 is extremely

accurate. This allows a broaden application range

for our products as compared with those of

competitors. At this moment the current and

voltage variation precision requested by market

is:

The TSM1011 ("A" version) shows excellent

performance

in

typical

adapter

and

battery

charger applications.

The results achieved in the above two practical

examples for current and voltage precision are:

These results confirm the optimum performances

and give clear explanation

of the

external

parameters that affect accuracy and precision for

the TSM1011

Attached to this application note is an Excel file

showing the general schematic of the TSM1011

and which allows the possibility of varying values

that characterize the application.

It is possible, moreover, to change the resistor

accuracy in order to avoid high-cost components

when the application requires a lower precision.

6

Vcc

1

5

TSM1011

4

R3

7

28V

R2

R1

Gnd

Out

%

1

I

I

lim

tot

lim

0

±

=

∆

5%

V

V

lim

tot

lim

±

=

∆

%

5

.

5

I

I

lim

tot

lim

±

=

∆

%

3

.

2

V

V

lim

tot

lim

±

=

∆

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the

consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from

its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications

mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information

previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or

systems without express written approval of STMicroelectronics.

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