データシートサーチシステム |
|
TS3410 データシート(PDF) 4 Page - Taiwan Semiconductor Company, Ltd |
|
TS3410 データシート(HTML) 4 Page - Taiwan Semiconductor Company, Ltd |
4 / 10 page TS3410 1A / 1.4MHz Synchronous Buck Converter 4/10 Version: C08 Application Information Setting the Output Voltage Application circuit item shows the basic application circuit with TS3410 adjustable output version. The external resistor sets the output voltage according to the following formula: Inductor Selection For most designs, the TS3410 operates with inductors of 2.2µH to 3.3µH. Low inductance values are physically smaller but require faster switching, which results in some efficiency loss. The inductor value can be derived from the following formula: Where is inductor Ripple Current. Large value inductors lower ripple current and small value inductors result in high ripple currents. Choose inductor ripple current approximately 20% of the maximum load current 1A, ∆IL=200mA. For output voltages above 2.0V, when light-load efficiency is important, the minimum recommended inductor is 2.7µH. For optimum voltage-positioning load transients, choose an inductor with DC series resistance in the 50m to 150m range. For higher efficiency at heavy loads (above 200mA), or minimal load regulation (but some transient overshoot), the resistance should be kept below 100m . The DC current rating of the inductor should be at least equal to the maximum load current plus half the ripple current to prevent core saturation (1000mA+100mA) Input Capacitor Selection The input capacitor reduces the surge current drawn from the input and switching noise from the device. The input capacitor impedance at the switching frequency shall be less than input source impedance to prevent high frequency switching current passing to the input. A low ESR input capacitor sized for maximum RMS current must be used. Ceramic capacitors with X5R or X7R dielectrics are highly recommended because of their low ESR and small temperature coefficients. A 4.7µF ceramic capacitor for most applications is sufficient. Output Capacitor Selection The output capacitor is required to keep the output voltage ripple small and to ensure regulation loop stability. The output capacitor must have low impedance at the switching frequency. Ceramic capacitors with X5R or X7R dielectrics are recommended due to their low ESR and high ripple current. Compensation Capacitor Selection The compensation capacitors for increasing phase margin provide additional stability. It is required and more than 15pF. Please refer to demo board schematic for design. Table 1: Resistor Select for Output Voltage Setting VOUT R2 R1 1.2V 300K 300K 1.5V 300K 450K 1.8V 300K 600K 2.5V 150K 470K 3.3V 120K 540K 5V 124K 910K Table 2: Inductor Select for Output Voltage Setting (VIN=3.6V) VOUT 1.2V 1.5V 1.8V 2.5V Inductor 2.7uH 2.7uH 2.7uH 2.2uH Part Number WE-TPC 7440430027 7440430027 7440430027 7440430022 Note: Part Type MH or M (www.we-online.com) |
同様の部品番号 - TS3410_10 |
|
同様の説明 - TS3410_10 |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |