产品概览
The TOP264KG-TL is a Power Integrations TOPSwitch-JX off-line switcher integrating a 725V 3.6A power MOSFET with controller. Up to 70W at 230VAC. 132kHz switching. EcoMode for light-load efficiency. Line over/under-voltage protection. eSIP-7C package. For AC-DC adapters and chargers.
主要规格
| 类型 | TOPSwitch-JX Off-Line Switcher |
| Power Rating | 70W (230VAC), 40W (Universal) |
| 输入电压 | 85-265 VAC |
| Frequency | 132 kHz switching |
| MOSFET | Integrated 725V, 3.6A |
| 特点 | EcoMode, Line OV/UV, Cycle-by-cycle OCP |
| Efficiency | >85% typical |
| Operating Temp | -40 to +150C (junction) |
| 包装 | eSIP-7C (10.4×9.1mm) |
工作原理
The TOPSwitch-JX integrates a PWM controller, high-voltage start-up current source, auto-restart, and protection circuits with the power MOSFET in a single monolithic IC. The controller operates in DCM (Discontinuous Conduction Mode). Cycle-by-cycle current limit protects the MOSFET from transformer saturation and output shorts. Line-sense (L) pin provides input over-voltage, under-voltage, and feed-forward for constant power limit across input range. EcoMode reduces switching frequency at light load to minimize standby power below 100mW.
应用
- AC-DC adapters
- Battery chargers
- Set-top boxes
- White goods