CHL8103-15CRT

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The CHL8103-15CRT is a highly efficient, wide range current mode, synchronous step-down, DC-DC controller which includes all the features needed to implement an advanced switching power supply. This device is capable of driving the external NMOS power switch to deliver output currents in excess of 5A and features an Internal LDO for interstage regulation. The CHL8103-15CRT provides comprehensive system protection and fault monitoring features, along with extreme flexibility in terms of operating range.

The CHL8103-15CRT can be used in a wide range of applications, from low noise point-of-load converters to high current supplies that require compliance to stringent efficiency standards. It can be implemented as a non-isolated step-down converter, allowing it to be deployed in a variety of battery-powered, low power and low voltage applications. The CHL8103-15CRT is also an ideal choice for automotive applications where it can enable the development of smart power supply solutions with minimal components.

The main application field of the CHL8103-15CRT is DC-DC switching controllers. This device is able to implement an advanced power supply design that ensures high efficiency, operating over a wide voltage range. The step-down topology enables the CHL8103-15CRT to deliver an output voltage range from 0.8V to 95V. The LDO interstage regulator is capable of providing the necessary power supply for the different blocks in multiple power phases, thanks to its adjustable output range from 0.76V to 4.7V.

In terms of working principle, the CHL8103-15CRT uses an advanced current mode architecture that provides excellent line and load transient response, high efficiency and low noise operation. It employs an internal oscillator for generating the switching frequency, which is programmable in the range from 200kHz to 1.2Mhz. The system can be optimized in terms of phase-shift, slew rate and control loop compensation depending on the application requirements.

The CHL8103-15CRT includes multiple integrated protection features such as over-voltage protection, over-temperature protection and under-voltage lockout. This device also includes fault monitors which indicate the presence of a fault condition and inform the system controller. The high level of integration and versatile protection features make the CHL8103-15CRT a robust and reliable solution for a variety of switch-mode power supplies.

In conclusion, the CHL8103-15CRT is an excellent choice for DC-DC switching controllers thanks to its wide range current mode design and its integrated safety features. It enables the development of highly efficient and low noise power supplies in a wide range of applications from low power to automotive. The advanced current mode architecture ensures the system has excellent line and load transient response along with high efficiency and reliability.

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