CHL8212-03CRT

CHL8212-03CRT is a DC DC controller with superior features and multiple advantages over traditional controllers. It is designed with a highly integrated pulse density modulation feedback control architecture and a wide range of output voltages. It is suitable for a varietyof applications, such as automotive and consumer electronics. It has high efficiency, very low ripple and noise, and a wide input voltage range. This article will discuss the application field of the CHL8212-03CRT, as well as its working principle.

Application Field

The CHL8212-03CRT is used for a variety of consumer electronic applications, including mobile phones, tablets, and smart watches. It is also well suited for automotive applications, including DC/DC buck controllers used in Electric Vehicle (EV) on-board charging systems. It can also be used in motor control in Electric Vehicles, such as motor controllers, as well as in solar power systems and home appliances.

Working Principle

The CHL8212-03CRT is a pulse density modulated (PDM) feedback control architecture DC/DC controller. The controller is optimized for high output voltage accuracy and efficiency. It uses a two-step constant frequency modulation scheme which maintains the output voltage by regulating the conduction time of both the high side MOSFET and the low side MOSFET in each cycle.

It consists of a voltage error amplifier, a cycle-by-cycle current limit comparator, a programmable frequency modulation block, an adaptive on-time controller, four self-centered slope compensation circuits, an enable/disable/soft-start control block, and a power-on reset circuit. The CHL8212-03CRT can support a wide input voltage range of 4.5V to 36V and output voltages of 0.9V to 24V.

It features programmable frequencies of 17kHz to 880kHz, positive and negative switching cycles, an advanced adjustable current limit, low output ripple and noise, high efficiency, and fast line and load transient response. The CHL8212-03CRT also supports a low quiescent current standby mode that preserves battery life.

Conclusion

The CHL8212-03CRT is a high-performance DC/DC controller optimized for use with a wide range of applications, including automotive and consumer electronics. It provides good stability, efficiency, and output voltage accuracy. It has a high input voltage range, programmable frequencies of 17kHz to 880kHz, and a low quiescent current standby mode for improved battery life. As such, this DC/DC controller is well suited for a variety of applications.