STMicroelectronics STCH03TR, PWM Controller 196 kHz 8-Pin, SO8
- RS-artikelnummer 175-1176
- Tillv. art.nr STCH03TR
- Tillverkare / varumärke STMicroelectronics
The STCH03 current-mode controller is designed for an offline quasi-resonant ZVS (zero-voltage-switching at switch turn-on) flyback converter.
It combines a high-performance low-voltage PWM controller chip and a 650V HV start-up cell 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 for dedicated current reference IC, as well as the current sensor, still maintaining quite accurate output current regulation.
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
| Attribute | Value |
|---|---|
| Maximum Switching Frequency | 196 kHz |
| Start-up Supply Current | 0.9mA |
| Maximum Supply Current | 2.9 mA |
| Zero Power Detection | Yes |
| Mounting Type | Surface Mount |
| Package Type | SO8 |
| Pin Count | 8 |
| Dimensions | 5 x 6.2 x 1.5mm |
| Length | 5mm |
| Width | 4mm |
| Height | 1.5mm |
| Maximum Operating Supply Voltage | 23 V |
| Minimum Operating Temperature | -40 °C |
| Minimum Operating Supply Voltage | 11.5 V |
| Output Voltage | 13 V |
| Maximum Operating Temperature | +150 °C |
| Input Voltage | 11.5 → 23V |
| Number of Outputs | 1 |
