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STMicroelectronics STCH03 | Demoboard STEVAL-USBPD27S
Offline PWM controller for low standby adapters
Overview
| Topology | Flyback Converter |
| Input voltage | 245 V |
| Switching frequency | 145-196 kHz |
| IC revision | 1 |
Description
The STCH03 current-mode controller is designed for an offline quasi-resonant ZVS (zerovoltage-switching at switch turn-on) flyback converter. It combines a high-performance low-voltage PWM controller chip and a 650V HV start-upcell in the same package.The device features a unique characteristic: it is capable of providing constant output current (CC) regulation using primary-sensing feedback. This eliminates the need fordedicated current reference IC, as well as the current sensor, still maintaining quite accurate output current regulation.The quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers the turn-on of the MOSFET, connected on the ZCD pin. This inputserves also as both output voltage monitor, to achieve mains-independent CC regulation (line voltage feedforward), and to implement OVP and UVP.
Features
- Advanced power management for ultra-low standby power consumption (under 10 mW at 230 VAC)
- Fully integrated primary side constant current output regulation (CC)
- 650 V embedded HV start-up circuit with zero power consumption.
- Quasi-resonant (QR) zero-voltage-switching (ZVS) operation
- Accurate and adjustable output OVP with options auto-restart (STCH03) or latched (STCH03L) after fault
- Output undervoltage protection (UVP) with auto-restart
- Input voltage feedforward compensation for mains-independent CC regulation
- Embedded thermal shutdown
- Intelligent frequency jitter for EMI suppression
- SO8 package
Typical applications
- Quick charger
- AC-DC chargers for smartphones, tablets, camcorders and other handheld equipment
- AC/DC adapters for STB, notebooks and auxiliary power supplies
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | L (mm) | W (mm) | Fl (mm) | Ceramic Type | Operating Temperature | Q | L (µH) | ISAT (A) | fres (MHz) | Version | Interface Type | Mount | Working Voltage (V (DC)) | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | VT (V (AC)) | fswitch (kHz) | NPRI : NSEC : NAUX | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | Pins (Value) (pcs) | Rows | H (mm) | G (mm) | Gender | IR (mA) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012206078 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 150 pF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 2.5 | 10 GΩ | 1.6 | 0.8 | 0.4 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012206079 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 220 pF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 2.5 | 10 GΩ | 1.6 | 0.8 | 0.4 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012205041 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 330 pF | ±10% | 25 | 0402 | -55 °C up to +125 °C | 3.5 | 10 GΩ | 1 | 0.5 | 0.25 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012006061 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 470 pF | ±5% | 50 | 0603 | -55 °C up to +125 °C | – | 10 GΩ | 1.6 | 0.8 | 0.4 | NP0 Class I | – | 1000 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012207116 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 100 V(DC) | 1 nF | ±10% | 100 | 0805 | -55 °C up to +125 °C | 2.5 | 10 GΩ | 2 | 1.25 | 0.5 | X7R Class II | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
 | 885342208018 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSMH Mid and High Voltage | 1 nF | ±10% | 1000 | 1206 | -55 °C up to +125 °C | 2.5 | 10 GΩ | 3.2 | 1.6 | 0.6 | X7R Class II | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.25 | – | – | – | 7" Tape & Reel | ||
| 885012206013 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 10 V(DC) | 6.8 nF | ±10% | 10 | 0603 | -55 °C up to +125 °C | 5 | 10 GΩ | 1.6 | 0.8 | 0.4 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012205012 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 10 V(DC) | 10 nF | ±10% | 10 | 0402 | -55 °C up to +125 °C | 5 | 10 GΩ | 1 | 0.5 | 0.25 | X7R Class II | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012206092 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 33 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 2.5 | 10 GΩ | 1.6 | 0.8 | 0.4 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012105010 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 10 V(DC) | 100 nF | ±20% | 10 | 0402 | -55 °C up to +85 °C | 5 | 5 GΩ | 1 | 0.5 | 0.25 | X5R Class II | -55 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012105018 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 100 nF | ±20% | 25 | 0402 | -55 °C up to +85 °C | 10 | 5 GΩ | 1 | 0.5 | 0.25 | X5R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012206095 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 100 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 3 | 5 GΩ | 1.6 | 0.8 | 0.4 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012105011 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 10 V(DC) | 220 nF | ±20% | 10 | 0402 | -55 °C up to +85 °C | 5 | 2.3 GΩ | 1 | 0.5 | 0.25 | X5R Class II | -55 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | 7" Tape & Reel | ||
| 885012106022 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 1 µF | ±20% | 25 | 0603 | -55 °C up to +85 °C | 10 | 0.5 GΩ | 1.6 | 0.8 | 0.4 | X5R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012207078 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 1 µF | ±10% | 25 | 0805 | -55 °C up to +125 °C | 5 | 0.5 GΩ | 2 | 1.25 | 0.5 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.25 | – | – | – | 7" Tape & Reel | ||
 | 885382209002 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSST Soft Termination | 2.2 µF | ±10% | 100 | 1210 | -55 °C up to +125 °C | 5 | 0.05 GΩ | 3.2 | 2.5 | 0.75 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.5 | – | – | – | 7" Tape & Reel | ||
| 885012106012 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 10 V(DC) | 4.7 µF | ±20% | 10 | 0603 | -55 °C up to +85 °C | 10 | 0.02 GΩ | 1.6 | 0.8 | 0.4 | X5R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012208094 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 4.7 µF | ±10% | 50 | 1206 | -55 °C up to +125 °C | 10 | 0.02 GΩ | 3.2 | 1.6 | 0.5 | X7R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.6 | – | – | – | 7" Tape & Reel | ||
| 885012107011 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 10 V(DC) | 22 µF | ±20% | 10 | 0805 | -55 °C up to +85 °C | 10 | 0.005 GΩ | 2 | 1.25 | 0.5 | X5R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.25 | – | – | – | 7" Tape & Reel | ||
| 885012109014 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 22 µF | ±20% | 25 | 1210 | -55 °C up to +85 °C | 10 | 0.005 GΩ | 3.2 | 2.5 | 0.6 | X5R Class II | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.5 | – | – | – | 7" Tape & Reel | ||
 | 7427927141 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | 0402 | -55 °C up to +125 °C | – | – | 1 | 0.5 | 0.25 | – | -55 °C up to +125 °C | – | – | – | – | SMT | – | SMT | – | – | – | – | – | – | – | – | 470 | 1200 | 300 MHz | 620 | 0.45 | two | – | – | – | – | – | – | – | – | – | – | 0.5 | – | – | 250 | – | ||
 | 820572711 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-VD Disk Varistor | – | – | – | 7 mm | -40 °C up to +85 °C | – | – | 9 | 3.9 | – | – | -40 °C up to +85 °C | – | – | – | – | THT | – | THT | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 275 | 350 | 430 | 1200 | 33 | 0.25 | 230 VAC | Yes | – | – | 12.5 | – | – | – | – | ||
 | 7447462471 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | 5075 | -40 °C up to +125 °C | – | – | 6 | 6 | – | – | – | – | 470 | 0.4 | 3.4 | Heat Shrinking Tube | – | THT | – | – | – | – | – | – | – | – | – | – | – | – | 2.4 | – | – | – | – | – | – | – | – | – | – | – | 8.5 | – | – | 350 | – | ||
 | 632723300011 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | – | – | – | – | – | – | – | – | – | Type C | THR | 20 | – | – | – | – | – | – | – | – | – | – | – | – | Horizontal | – | – | – | – | – | – | USB 3.1 | – | 24 | – | – | 1.9 | Receptacle | 5000 | Tape and Reel | |
 | 61300411121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | 10.16 | – | – | – | – | – | – | – | – | – | – | THT | 250 | – | – | – | – | – | – | – | – | – | – | – | – | Straight | – | – | – | – | – | – | – | – | 4 | Single | – | – | Pin Header | 3000 | Bag | |
| 750318501 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Offline Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 750318330 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-OLSTM Offline Flyback Transformers | – | – | – | RM8 | -40 °C up to +125 °C | – | – | 24.64 | 24.64 | – | – | – | – | 150 | 4.8 | – | – | – | THT | – | 85 - 265 V (AC) | 12 | 2.25 | 12 | 4000 | 56 - 138 | 5:1:3.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 17.32 | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012206078 | SPEC | |
| 885012206079 | SPEC | |
| 885012205041 | SPEC | |
| 885012006061 | SPEC | |
| 885012207116 | SPEC | |
| 885342208018 | SPEC | |
| 885012206013 | SPEC | |
| 885012205012 | SPEC | |
| 885012206092 | SPEC | |
| 885012105010 | SPEC | |
| 885012105018 | SPEC | |
| 885012206095 | SPEC | |
| 885012105011 | SPEC | |
| 885012106022 | SPEC | |
| 885012207078 | SPEC | |
| 885382209002 | SPEC | |
| 885012106012 | SPEC | |
| 885012208094 | SPEC | |
| 885012107011 | SPEC | |
| 885012109014 | SPEC | |
| 7427927141 | SPEC | |
| 820572711 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | |
| 7447462471 | SPEC | |
| 632723300011 | SPEC | – |
| 61300411121 | SPEC | – |
| 750318501 | SPEC | – | |
| 750318330 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | L (mm) | W (mm) | Fl (mm) | Ceramic Type | Operating Temperature | Q | L (µH) | ISAT (A) | fres (MHz) | Version | Interface Type | Mount | Working Voltage (V (DC)) | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | VT (V (AC)) | fswitch (kHz) | NPRI : NSEC : NAUX | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | Pins (Value) (pcs) | Rows | H (mm) | G (mm) | Gender | IR (mA) | Packaging | Samples |
|---|