米6体育平台手机版

ZHCSNO6B February 2023 – March 2024 TPS628301 , TPS628302 , TPS628303 , TPS628304

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

RZE|8
- MPQF677
DRL|8
- MPCS002E

散热焊盘机械数据 (封装 | 引脚)

订购信息

8.2.2.4 Output Capacitor Selection

The inductor and the output capacitor together provide a low-pass filter. To simplify this process, Table 8-5 outlines possible inductor and capacitor value combinations for most applications. Cells with the (✓) mark represent combinations that are proven for stability by simulation and lab test. additionally, cells with the (+) mark represent combinations that are proven for stability by simulation only. Check further combinations for each individual application.

The DCS-Control scheme of the TPS62830x allows the use of tiny ceramic capacitors. Ceramic capacitors with low ESR values have the lowest output voltage ripple and are recommended. To keep low resistance up to high frequencies and to get narrow capacitance variation with temperature, TI recommends using X7R or X5R dielectrics. At light load currents, the converter operates in Power Save Mode and the output voltage ripple is dependent on the output capacitor value. A larger output capacitors can be used reducing the output voltage ripple. Considering the DC-bias derating the capacitance, the recommended minimum effective output capacitance is 12 µF when using a 0.47-µH or larger inductor. When using a 0.24-µH or lower inductor, the recommended minimum effective output capacitance is 22 µF. Table 8-7 lists recommended capacitors.

Table 8-4 Matrix of Output Capacitor and Inductor Combinations (TPS628301 and TPS628302)

V_OUT [V]	NOMINAL L [µH]⁽²⁾	NOMINAL C_OUT [µF]⁽³⁾
V_OUT [V]	NOMINAL L [µH]⁽²⁾	2 × 10 or 22	2 × 22 or 47	100
0.5 ≤ V_OUT ≤ 1.8	0.47	✓⁽¹⁾	✓	+
0.5 ≤ V_OUT ≤ 1.8	1.0	+	+
1.8 < V_OUT	0.47		✓⁽¹⁾	+
1.8 < V_OUT	1.0	+	+

Table 8-5 Matrix of Output Capacitor and Inductor Combinations (TPS628303 and TPS628304)

V_OUT [V]	NOMINAL L [µH]⁽²⁾	NOMINAL C_OUT [µF]⁽³⁾
V_OUT [V]	NOMINAL L [µH]⁽²⁾	2 × 10 or 22	2 × 22 or 47	100
0.5 ≤ V_OUT ≤ 1.8	0.47	✓^⁽¹⁾	✓	+
0.5 ≤ V_OUT ≤ 1.8	0.24	+	✓	+
1.8 < V_OUT	0.47		✓^⁽¹⁾	+
1.8 < V_OUT	0.24		✓	+

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

(2) Inductor tolerance and current derating is anticipated. The effective inductance can vary by 20% and –30%.

(3) Capacitance tolerance and bias voltage derating is anticipated. The effective capacitance can vary by 20% and –50%.

Table 8-6 List of Recommended Capacitors

NOMINAL CAPACITANCE [µF]	VOLTAGE RATING [V]	DIMENSIONS [mm]	MFR PART NUMBER⁽¹⁾
10	6.3	2.0 × 1.5 × 1.25	MSASJ21GAB7106MTNA01, Taiyo Yuden
10	10	2.0 × 1.25 × 1.25	C2012X7R1A106K125AC, TDK
10	10	1.6 × 0.8 × 0.8	GRM188Z71A106KA73#, MuRata
10	10	1.6 × 0.8 × 0.8	C1608X5R1A106K080AC, TDK
22	10	2.0 × 1.25 × 1.25	GRM21BZ71A226ME15#, MuRata
22	10	1.6 × 0.8 × 0.8	C1608X5R1A226M080AC, TDK