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ZHCSFR4C DECEMBER 2016 – October 2017 TLV62569

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.

8.2.2.3 Output Filter Design

The inductor and output capacitor together provide a low-pass filter. To simplify this process, Table 4 outlines possible inductor and capacitor value combinations. Checked cells represent combinations that are proven for stability by simulation and lab test. Further combinations should be checked for each individual application.

Table 4. Matrix of Output Capacitor and Inductor Combinations

V_OUT [V]	L [µH]⁽¹⁾	C_OUT [µF]⁽²⁾
V_OUT [V]	L [µH]⁽¹⁾	4.7	10	22	2 x 22	100
0.6 ≤ V_OUT < 1.2	1				+
0.6 ≤ V_OUT < 1.2	2.2				++⁽³⁾
1.2 ≤ V_OUT < 1.8	1			+	+
1.2 ≤ V_OUT < 1.8	2.2			++⁽³⁾	+
1.8 ≤ V_OUT	1		+	+	+
1.8 ≤ V_OUT	2.2		++⁽³⁾	+	+

(1) Inductor tolerance and current de-rating is anticipated. The effective inductance can vary by +20% and -30%.

(2) Capacitance tolerance and bias voltage de-rating is anticipated. The effective capacitance can vary by +20% and -50%.

(3) This LC combination is the standard value and recommended for most applications.