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STMicroelectronics STCH02 | Demoboard STEVAL-ISA193V1
15 W, 5 V- 3 A output CC primary sensing USB adapter based on STCH02
Overview
| Topology | Flyback Converter |
| Input voltage | 90-265 V |
| Output 1 | 5 V / 3 A |
| IC revision | V1 |
Description
The STEVAL-ISA193V1 evaluation board implements a 15 W USB adapter with primary sensing CC feature, based on the STCH02 current mode controller designed for offline quasi-resonant flyback converters, capable of providing constant output current (CC) regulation using primary-sensing feedback.The IC embeds a 650 V, non-dissipative, HV startup cell, which, along with the extremely low quiescent current and burst-mode management, helps minimize residual input consumption, thus achieving less than 10 mW under no-load conditions.The adapter is designed to meet the most stringent energy saving recommendations (EuCoC rev. 5 – Tier 2 and EPS of DOE USA) as well as EN55022-Class-B Conducted noise emissions.The extremely small form factor and the output USB connector makes this reference design suitable for small USB chargers and adapters for mobile phones, tablets and other hand held equipment.
Features
◾Universal AC Main Input voltage range : 90 VAC to 264 VAC◾Output range: 5 V - 3 A continuous operation◾Constant voltage (CV) and constant current (CC) operation with CC primary sensing◾Input power in standby < 10 mW at 230 VAC◾Average efficiency: > 81.84%, complies with EuCoC rev. 5 – Tier 2 and EPS of DOE USA◾EMI: According to EN55022-Class-B◾Small form factor: (44 x 35 x 15 mm)◾RoHS compliant
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | Interface Type | Type | Variant | Gender | Pins | Mount | Working Voltage(V (AC)) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TI Radial Leaded Wire Wound Inductor, 470 µH, 0.35 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | Inductance470 µH | Rated Current0.35 A | Saturation Current @ 10%0.4 A | DC Resistance2.4 Ω | Self Resonant Frequency3.4 MHz | VersionHeat Shrinking Tube | – | – | – | – | – | MountTHT | – | – | ||||
 | 7508111123 | Transformer, 900 µH, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Transformer | Inductance900 µH | – | – | – | – | – | – | – | – | – | – | MountTHT | – | PackagingTray | |||
 | WR-USB Standard Connectors, –, 1.5 A | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Standard Connectors | – | Rated Current1.5 A | – | – | – | – | Interface TypeType A | TypeHorizontal - Short Type | Variantwith Clips | GenderReceptacle | Pins4 | MountTHT | Working Voltage30 V (AC) | PackagingTape and Reel & Mylar |