Calculation tool
SLPR053 — Power Loss Calculation Tool for Synchronous Inverting Buck Boost Converter
MOSFET power loss calculation and selection tool for synchronous inverting buck boost converter
CSD87355Q5D
30-V, N channel synchronous buck NexFET™ power MOSFET, SON 5 mm x 6 mm power block, 45 A
Data sheet
CSD87355Q5D
- Half-Bridge Power Block
- 92.5% System Efficiency at 25 A
- Up to 45-A Operation
- High-Frequency Operation (Up to 1.5 MHz)
- High-Density SON 5-mm × 6-mm Footprint
- Optimized for 5-V Gate Drive
- Low Switching Losses
- Ultralow Inductance Package
- RoHS Compliant
- Halogen Free
- Pb-Free Terminal Plating
The CSD87355Q5D NexFET™ power block is an optimized design for synchronous buck applications offering high-current, high-efficiency, and high-frequency capability in a small 5-mm × 6-mm outline. Optimized for 5-V gate drive applications, this product offers a flexible solution capable of offering a high-density power supply when paired with any 5-V gate drive from an external controller/driver.
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Technical documentation
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View all 8 | Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | CSD87355Q5D Synchronous Buck NexFET Power Block datasheet (Rev. A) | PDF | HTML | 19 Sep 2017 |
| Application note | MOSFET Support and Training Tools (Rev. G) | PDF | HTML | 27 Oct 2025 | |
| Application note | Semiconductor and IC Package Thermal Metrics (Rev. D) | PDF | HTML | 25 Mar 2024 | |
| Application note | QFN and SON PCB Attachment (Rev. C) | PDF | HTML | 06 Dec 2023 | |
| Application brief | Tips for Successfully Paralleling Power MOSFETs | PDF | HTML | 31 May 2022 | |
| Technical article | The flexibility of advanced controllers and NexFET™ Power Blocks in high-power POL | PDF | HTML | 03 Feb 2017 | |
| Application note | Ringing Reduction Techniques for NexFET High Performance MOSFETs | 16 Nov 2011 | ||
| Application note | PowerStack™ Packaging Technology Overview | 18 Jul 2011 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
CSD87355Q5DEVM-820 — CSD87355Q5D Synchronous Step-Down Converter Evaluation Module
The CSD87355Q5DEVM-820 evaluation module (EVM) is a synchronous buck converter featuring TI's NexFET PowerBlock technology to provide a high current, ultra-high density power supply solution. The EVM provides a 1.2V output at 25A from a 12V input bus at over 92% efficiency.
User guide: PDF
Calculation tool
SYNC-BOOST-FET-LOSS-CALC — Power Loss Calculation Tool for Synchronous Boost Converter
MOSFET power loss calculator for synchronous boost converter applications.
Supported products & hardware
Calculation tool
SYNC-BUCK-FET-LOSS-CALC — Power Loss Calculation Tool for Synchronous Buck Converter
Quickly trade off size, cost and performance to select the optimal MOSFET based on application conditions.
Supported products & hardware
Reference designs
TIDA-050057 — Power solution for Alder Lake and Raptor Lake VCCIN_AUX rail in PC applications reference design
This power-supply reference design supports VCCIN_AUX rail in Intel® Alder Lake and Raptor Lake platform. Using TPS51215A controller combined with an operational amplifier could support the control functions including VID control, load line (LL) and current monitor (IMON). The position for test (...)
Design guide: PDF
Reference designs
TIDA-050024 — Envelope-tracking power supply reference design for mid-power audio power amplifier application
This reference design delivers an envelope-tracking power supply circuit for mid-power audio power amplifier (PA) applications with TPS43061 boost controller. By adding an audio envelope signal to the FB pin, the boost converter's output voltage can change in accordance with the envelope of the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| LSON-CLIP (DQY) | 8 | Ultra Librarian |
Ordering & quality
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Support & training
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