Max Input DC Voltage Inquiry
4:35
Project
BOM
Datasheet
Determining input voltage limits.
Using knowledge tool first.
Analyzing component ratings.
Determining max input DC voltage.
Using Knowledge Base Tool.
Looking for "Recommended operating input voltage range" in tps54331.pdf
Looking for "Absolute Maximum Ratings for input voltage VIN" in tps54331.pdf
Looking for "Input voltage range VIN" in tps54331.pdf
Looking for "VRRM repetitive peak reverse voltage" in ds30477.pdf
Looking for "maximum reverse voltage" in ds30477.pdf
Looking for "Reverse voltage rating" in ds30477.pdf
Using BOM Tool.
Querying voltage ratings.
Short answer: 28 V DC max in normal operation; 30 V absolute maximum on the IC. Do not design to the absolute maximum.
Details
- Controller limit (datasheet):
- U1 TPS54331DR VIN operating range: 3.5 V to 28 V. Absolute max VIN: 30 V.
- Freewheel diode:
- D1 PDS760-13 reverse-voltage rating (VRRM): 60 V, so it is not the limiting part.
- Board-level limit depends on the lowest-rated VIN-connected part:
If you tell me your intended max VIN (e.g., 12 V, 24 V), I can set the capacitor and connector ratings accordingly and update the design.
Using 24V input
Check input cap ratings
Verify current cap voltage
Add input protection
Connector voltage/current
43 days
Ready.
J1
VIN
C1
Capacitance
22u F
VIN
Reviews
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Inspect
TPS54331 Buck converter 3.3V
Controls
Properties
Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Digi-Key | $4.84–$10.50 | |
| LCSC | $5.76 | |
| Mouser | $12.03 | |
Assets
- TPS54331-removebg-preview.png
id=TPS54331-removebg-preview
Thumbnail
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