NXP Semiconductors TEA18362T SMPS 控制器集成电路
恩智浦半导体 TEA18362T GreenChip SMPS 控制器集成电路 适用于反激式电源，可提供高达 75W 的功率。在大功率 水平下，TEA18362T 在准谐振（QR）模式下运行。在低功率 水平下，该控制器切换至降频（FR）或 非连续导通（DCM）模式，并将电流限制在 峰值电流的 25% 左右。在低功率水平下，当开关频率 降至 25kHz 以下，该反激式转换器切换至突发模式。这 确保器件在低功率水平下高效运行，以及具有出色的无负载功率 性能。
特性
- SMPS Controller IC for low-cost applications
- Large supply voltage range (up to 30V)
- Integrated high-voltage start-up
- Continuous VCC regulation during start-up and protection via the HV pin, allowing a minimum VCC capacitor value
- Reduced opto current in burst mode enabling low no-load power consumption
- Operating frequencies in all operating modes are outside the audible area
- Integrated X-capacitor discharge
- Adjustable soft start
- Power-down mode via the PROTECT pin
- Low supply current during normal operation (0.6mA without load)
- Low supply current during the non-switching state in burst mode (0.2mA)
- Valley switching for minimum switching losses
- Frequency reduction with fixed minimum peak current to maintain high efficiency at low output power levels
- Mains voltage-independent OverPower Protection (OPP)
- OverTemperature Protection (OTP)
- Integrated overpower time-out
- Continuous mode protection using demagnetization detection
- Accurate Overvoltage Protection (OVP)
- General-purpose input for latched protection; for use with system OverTemperature Protection (OTP)
应用
- Efficient and cost-effective power supplies up to 75W
发布日期: 2015-08-20
| 更新日期: 2022-03-11