Support software
LOAD-SWITCH-FET-LOSS-CALC — Power Loss Calculation Tool for Load Switch
Quickly trade off size, cost and performance to select the optimal MOSFET based on application conditions.
CSD19531Q5A
100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 6.4 mOhm
Data sheet
CSD19531Q5A
- Ultra-Low Qg and Qgd
- Low Thermal Resistance
- Avalanche Rated
- Pb-Free Terminal Plating
- RoHS Compliant
- Halogen Free
- SON 5 mm × 6 mm Plastic Package
This 100 V, 5.3 mΩ, SON 5 mm × 6 mm NexFET power MOSFET is designed to minimize losses in power conversion applications.
Typical RθJA = 40°C/W on a 1−inch2, 2-oz. Cu pad on a 0.06−inch thick FR4 PCB. Max RθJC = 1.0°C/W, pulse duration ≤100 μs, duty cycle ≤1%
For all available packages, see the orderable addendum at the end of the data sheet.Technical documentation
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View all 10 | Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | CSD19531Q5A 100 V N-Channel NexFET Power MOSFETs datasheet (Rev. B) | PDF | HTML | 19 May 2014 |
| Application brief | Estimating Leakage Currents of Power MOSFETs | PDF | HTML | 31 Oct 2025 | |
| 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 | Using MOSFET Transient Thermal Impedance Curves In Your Design | PDF | HTML | 18 Dec 2023 | |
| Application note | QFN and SON PCB Attachment (Rev. C) | PDF | HTML | 06 Dec 2023 | |
| Application note | Using MOSFET Safe Operating Area Curves in Your Design | PDF | HTML | 13 Mar 2023 | |
| Application brief | Tips for Successfully Paralleling Power MOSFETs | PDF | HTML | 31 May 2022 | |
| Technical article | How to select a MOSFET - Hot Swap | PDF | HTML | 06 Apr 2018 | |
| Application note | Ringing Reduction Techniques for NexFET High Performance MOSFETs | 16 Nov 2011 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Daughter card
UCC24636EVM — UCC24636 Synchronous Rectifier Daughter Board/Evaluation Module
The UCC24636EVM is a demonstration daughter board that allows quick installation into an existing DCM Flyback power supply to convert an output diode rectifier into a synchronous rectifier to improve efficiency. The board is programmed by the user and may be wired directly into the output stage, (...)
User guide: PDF
Support software
NONSYNC-BOOST-FET-LOSS-CALC — NONSYNC BOOST FET LOSS Calculator
MOSFET power loss calculator for non-synchronous boost converter
Supported products & hardware
Simulation model
CSD19531Q5A TINA-TI Spice Model (Rev. A)
SLPM111A.TSM (16 KB) - TINA-TI Spice Model
Calculation tool
FET-SOA-CALC-SELECT — MOSFET SOA calculation and selection tool
Excel based FET SOA calculation and selection tool
Supported products & hardware
Calculation tool
MOTOR-DRIVE-FET-LOSS-CALC — Power Loss Calculation Tool for BLDC Motor Drive
This is an Excel-based MOSFET power loss calculator for brushless DC motor drive applications.
Supported products & hardware
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
Supported products & hardware
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
Calculation tool
SYNC-RECT-FET-LOSS-CALC — Power loss calculation tool for synchronous rectifier
MOSFET power loss calculator for synchronous rectifier applications
Reference designs
PMP22764 — Isolated flyback converter (24-V to 56-V/1.25-A) reference design
This reference design utilizes a diode rectified flyback converter for a 24-V input to isolated 56-V/1.25-A output. The LM51551 PWM controller provides the control for the flyback converter, including hiccup mode short circuit protection. This reference design is ideal for when any well-regulated (...)
Reference designs
PMP40500 — 54-VDC input, 12-V 42-A output half-bridge reference design
This 12-V, 42-A output half-bridge reference design is for bus converters in wired networking campus and branch switches. The design features high efficiency and various fault protections (over-current and short-circuit). The design provides an efficiency comparison using 3 kVRMS basic and (...)
Reference designs
TIDA-050022 — Power stage reference design for <100-VIN DC/DC converters
This reference design implements a high frequency power stage design based on the UCC27282 120-V half-bridge MOSFET driver and CSD19531 100-V power MOSFETs. With efficient switches and flexible VGS operating range, this design can reduce overall gate drive and conduction losses to achieve (...)
Reference designs
TIDA-00709 — 36W, Universal Input, >90% Efficiency, Dual Output Aux Supply Ref Design for PSU
TIDA-00709 is a 36-W dual-output auxiliary power supply with provision to accept both wide ranges of DC and AC inputs. Based on the input, this reference design can be used as an adapter or auxiliary power supply designed for use in power converters targeted for server, telecom and industrial (...)
Reference designs
TIDA-00519 — 65W High-efficiency CoC-5 tier2/DOE Level VI AC Adapter
This is a high efficiency 65W AC/DC design for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI requirements for external power supplies using the LM5023 Quasi-Resontant Flyback Controller with UCC24630 Synchronous Rectification Controller and (...)
Schematic: PDF
Reference designs
PMP10145 — 38W Offline AC/DC Transition Mode Synchronous Flyback Converter Reference Design
The PMP10145 reference design uses the UCC28610 flyback controller for the transition mode flyback topology. It generates an isolated output (9V@4.22A) from a wide AC input voltage range (80VAC - 291VAC). The controller maintains discontinuous mode operation and valley switching over the entire (...)
Reference designs
PMP10936 — 85-265VAC Input, 12V/30W Two-Switch Flyback Reference Design
The PMP10936 reference design uses the UCC28740 to provide an isolated 12V at 2.5A output. The UCC24636 is used to control a synchronous recitifer for high efficiency. The two-switch flyback topology recycles the transformer's leakage energy and provides a further improvement in efficiency.
Reference designs
PMP9730 — Universal AC Input, 12V/3A Single stage PFC-Flyback Reference Design with Synchronous Rectification
The PMP9730 reference design employs the UCC28051 power factor correction controller to implement a single stage PFC-Flyback AC/DC converter that generates an isolated 12V output at 3A from a universal AC input. The design features UCC28910 primary side regulation Flyback switcher for (...)
Reference designs
PMP9715 — 85 to 265VAC Input 12V@3A High Efficiency Adapator Reference Design
This reference design provides an isolated 12V/36W output from a universal AC input range with over 89% peak efficiency. The UCC24610 synchronous rectifier controller and CSD19531Q5A FET reduce the rectifier loss and provide high efficiency with a minimal increase in cost. The UCC28740 flyback (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSONP (DQJ) | 8 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
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- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
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Information included:
- Fab location
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Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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