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.
- Industrial equipment
- Consumer/Computer adaptor
- Panel bypass
- Connection boxes
- Compressor drive
- Electronics actuators
- Drive train
- On-board chargers/inverters
- Lights and light beam
- Station chargers
- 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.
- 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.
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.
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 designsRectifier 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.
Schottky or FERD? Stop Guessing and Start Choosing with our eTool
Ideal for confined applications where efficiency and thermal performance are key
For high-power SMPS, snubber circuits, free-wheeling
Unbeatable efficiency and robustness
For PFC and secondary side applications
Getting started with Schottky and FERD eTool video
Recommended for you
New ultrafast and power Schottky diodes deliver high power in 1.1 mm high, extra-slim package
In addition to having a low forward voltage drop and avalanche capability, these ultrafast and Schottky barrier rectifiers, which are rated from 30 to 200 V with a current rating from 5 to 12 A, help ensure greater compactness of equipment, with increased power density and efficiency, in a large range of applications including car modules, industrial equipment, telecom power systems and personal electronics.
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.