Power supply and inverter designers must comply with standards and market demands for higher efficiency, smaller form factors, and more durable converters. ST has recently added silicon carbide diodes alongside its consolidated range of Schottky and ultrafast bipolar to ensure that designers find the right devices for their application.
Applications
- Industrial equipment
- Consumer/Computer adaptor
- Lighting
- Medical
- Inverters
- Panel bypass
- Connection boxes
- Compressor drive
- Electronics actuators
- Drive train
- On-board chargers/inverters
- Actuators
- Lights and light beam
- Station chargers
- Appliances
- Pumps
- Fans
- Conveyors/Forklifts
- Power actuation
Types of diodes and rectifiers
When choosing the right device, there are several criteria to consider apart from current and voltage ratings. For example, power Schottky feature very low voltage drop but do not offer high reverse voltage capability. Field effect rectifiers perform better at certain current densities and voltages. Silicon carbide and ultrafast bipolar are most suitable for heavy duty, high-voltage converter applications; the former has virtually no recovery losses, while the latter offers increasingly softer recovery iterations with each new release. Bridge diodes ensure rugged operation, while signal Schottky offer very high accuracy in applications ranging from simple signal paths to RF needs.
3 advantages with ST diodes
The ST range of Schottky, SiC, and ultrafast diodes ensures three strategic advantages for fast and easy design.
Across-the-board efficiency
- Wide coverage for SMPS and inverter applications through a wide range of voltages: 15-200 V for Si Power Schottky (STPS) with 175°C Tj.
- Field effect rectifier diodes (FERD) 40-100 V can replace Schottky diodes in some demanding efficiency designs.
- 650V and 1200V Si Ultrafast Turbo 2 High Temp (STTH) available, as well as new soft subranges.
- 650 V and 1200 V extremely fast and efficient SiC diodes Power Schottky (STPSC) with 175°C Tj.
- Current ratings equally cover the field with a common 1-60 A range and up to 240 A for Ultrafast diodes.
- All devices designed and manufactured by ST.
Performance packages
ST implements optimized processes for attaching high performance and efficiency dice to packages that improve thermal performance. ST offers a very wide range of industry-standard packages, with recent emphasis on power SMD (30A FERD in a DPAK) and high-voltage SMD (STBR3008G2Y bridge rectifier in HV D2PAK). They target demanding applications from fast-charging adaptors to servers SMPS to electric vehicles chargers.
Proven robustness
Our industrial and automotive grade diodes are manufactured to the same quality standards required for automotive-grade (AEC-Q101) qualification. This proven process robustness across the ST diode range ensures high reliability in electronic circuits based on these devices.
Simulation and finder apps to speed up designs
Rectifier diode simulator in eDesignSuite:Our Schottky & FERD eTool allows designers to evaluate the field-effect rectifier or Schottky diode that best fits their application using the user waveform-driven inputs. It returns I-V curves according to design conditions and evaluation of the available headroom. It includes a powerful search engine to help SMPS designers and component engineers select the best rectifier or diode for their application.
ST Diode Finder:
This online simulator includes a detailed parametric search engine, a fast view of the most important electrical parameters, and more.
Featured Videos
Getting started with Schottky and FERD eTool video
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eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Power Supply Design Tool
SMPS design, by topology, by type and by product PFC design with analog and digitial control Supports various PCB configurations 
LED Lighting Design Tool
Handles AC-DC and DC-DC design in common topologies Displays interactive and annotated schematic Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data 
Digital Power Workbench
Provides a step-by-step optimized design of power section and control loop Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs 
Power Tree Designer
Specify input/output power for each node in the tree Check for consistency Design each individual node 
AC Switches Simulator
Select ratings and application waveforms Get junction temperature and blocking voltage graphs Search and sort suitable devices 
Rectifier Diodes Simulator
Select ratings and application waveforms Estimate power losses Search and sort suitable devices 
STPOWER Studio
Supports long mission profiles Provides power loss and temperature graphs Helps define heatsink thermal properties 
Twister Sim
Help select the right ViPOWER Automotive power device Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis Supports various PCB configurations 
TVS Simulator
Specify system ratings and surge waveform Search and sort suitable devices 
Active Filters
Handles multi-stage-designs and common topologies Returns circuit component values Provides gain, phase and group delay graphs Low Pass, High Pass and Band Pass 
Comparators
Handles most common configurations Returns circuit components values Provides I/O signal waveforms Inverting, Non Inverting, Window 
Low side Current Sensing
Returns circuit component values Provides current error graphs 
High side Current Sensing
Provides current error graphs. Help to select the right High side current sensing and shunt devices. 
NFC Inductance
Input geometry and substrate properties Get antenna impedance 
UHF Link Budget
Enter forward and reverse link characteristics The tool returns link budget estimate 
NFC Tuning Circuit
Enter antenna parameter and matching target Select the topology of the matching network The tool returns component values for the desired design targets