Holtek has launched a new asynchronous buck converter HT7463C/HT7463D for 48V systems, smart lighting, security products, smart meters and smart home appliances. The input voltage range is 4.5V~60V, and the withstand voltage is 66V. It can be applied to 5V/12V/24/36V/48V input power supply, such as 12V/24V adapter, 36V security bus and 48V battery pack, etc. The 0.6A output current capability can power WiFi modules, PLC modules and LEDs, etc.
The HT7463C/D can achieve the function of input power limitation at startup by designing resistors and capacitors on the EN pin. For input power applications with limited power, such as bus power, it can reduce the pulse current at startup and prevent the input power voltage from dropping. .
The HT7463C/D is divided into two switching frequency products; the HT7463C switching frequency is 1.25MHz, which is suitable for applications with small input and output voltage differences and low output ripple requirements. The output capacitance value can meet the output ripple of 1‰. The HT7463D switching frequency is 550kHz, which is suitable for applications with large input and output voltage differences, such as security products and 48V systems.
