Замена Конденсаторов

flux

1:04

Planning capacitor replacement.

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Я подготовлю план, чтобы заменить тантал C3 на две керамики 1210 по 45 µF, параллельно на 5 V.
  • Удалим C3 между Net (+5V - P1) и GND.
  • Добавим две 45uF 1210 Ceramic Capacitor в параллель на Net (+5V - P1)–GND, близко к IC1/L1.
  • Присвоим обозначения (например, C3A/C3B) и обновим BOM.
  • Проверим ERC/DRC, включая дерейтинг: напряжение ≥1.5×VOUT и работа при ≤60% рейтинга.
Нажмите Start на планке, чтобы запустить изменения, или скажите, если хотите что-то поменять.
66 days
grabarsm

grabarsm

@library подбери 2× керамику 45µF в 1210, X7R, напряжение 16V или выше.
66 days

flux

4:37

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Searching library for: "ceramic MLCC capacitor, 45 uF capacitance, 1210 (3225 metric) package, X7R dielectric, voltage rating 16 V or higher, low ESR, used as bulk output capacitor for a 5 V buck regulator"

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Found 45 results.

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Searching library for: "ceramic MLCC capacitor, 22 uF capacitance, 1210 (3225 metric) package, X7R dielectric, 16 V rating, low ESR, bulk output capacitor for a 5 V buck regulator"

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Planning capacitor search with queries.

Непосредственно 45 µF в 1210 X7R ≥16 V в библиотеке не нашлось. Ближайший эквивалент — 2× 22 µF 1210 X7R, что даст ~44 µF номинально. Оба варианта ниже соответствуют требованиям 1210/X7R и напряжению ≥16 V (соответствует правилу: рейтинг ≥1.5×VOUT и работа ≤60% от номинала).
Подходящие варианты (берите 2 одинаковых):
Предпочтете 16 V или 25 V (лучше держит емкость при DC bias)? Если ок с этим вариантом, скажите какой именно — добавлю обе в проект вместо тантала. Если 45 µF строго, могу предложить другие комбинации (другой рейтинг/габарит).
Выбрать 25V вариант
Выбрать 16V вариант
Нужны строго 45µF
Проверить текущий стабилизатор
66 days
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+5V
EN
GND
GND
VIN
C4
Capacitance
0.01uF
C3
End of Life
Capacitance
330uF
C5
Capacitance
0.1uF
R1
Resistance
3.16kΩ
L1
Inductance
15uH
C2
End of Life
Capacitance
22uF
C1
End of Life
Capacitance
22uF
IC1
R2
Resistance
1kΩ
VIN
+5V
VIN
D1
+5V
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TPS5430 5V reference design

TPS5430 5V reference design thumbnail
This TPS5430DDA-based design is a step-down voltage regulator, converting a higher input voltage to a stable 5V output. Ideal for applications requiring a regulated 5V supply. #referenceDesign #project #stepDown #voltageRegulator #5V #TPS5430 #TPS5430DDA #powermanagement #texas-instruments #template #reference-design #polygon

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