Datasheet
R2
R1 ) R2
R1 ø R2 +
L1
DCR C1
R1
L1
DCR
C1
To CSRTx
To CSx
R2
V
OUT
V
IN
+ V
C
−
TPS40140
SLUS660H –SEPTEMBER 2005–REVISED JUNE 2013
www.ti.com
Figure 5-24. Using Resistor R2 to Reduce the Current Sense Amplifier Voltage
The parallel combination of R1 and R2 is shown in Equation 19.
(19)
The ratio shown in Equation 20 provides the required voltage attenuation.
(20)
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