CHL8103-06CRT

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The CHL8103-06CRT is a current, high-efficiency synchronous buck DC/DC controller that plays a crucial role in power management, especially in applications where supply voltage and high current must be precisely regulated. It features integrated power switches, low quiescent current and a low noise, variable frequency, synchronous rectification architecture. It also features an integrated fast transient response and low output voltage ripple. CHL8103-06CRT is typically used in multiple LED lighting, USB and PoE (Power over Ethernet) applications that require tight regulation and current sense circuitry.

Features of CHL8103-06CRT

CHL8103-06CRT is a feature-packed DC/DC controller including but not limited to the following features:

• Integrated high-side and low-side NFETs for improved efficiency compared to Schottky diode-based solutions.
• Integrated Digital SoftStart™ increases PI section reference current ramp-up rate from 2.5mA/µs to 50mA/µs.
• D-Cap™ Mode improves light-load efficiency.
• Spread-Spectrum Clock (SSC) feature reduces EMI.
• Compatible with Synchronous Rectification and Non-Synchronous Rectification.
• Input operating range of 4V – 18V.
• N-Channel FET gate drive current at 1A.

Application fields of CHL8103-06CRT

The CHL8103-06CRT is ideally suited for numerous applications including, but not limited to:

• White LED lighting applications
• Portable consumer electronics
• USB and PoE applications
• CISPR22-compliant applications
• Dedicated power supply applications

Working Principle of CHL8103-06CRT

CHL8103-06CRT is a high-efficiency synchronous buck DC/DC controller to precisely regulate current and power in applications. It features a low quiescent current and a low noise, variable frequency, synchronous rectification architecture. It is composed of multiple power MOSFETs, digital and analog components.

In order to use CHL8103-06CRT, the user first need to connect certain pins of the controller such as input voltage, output voltage, ground and enable. Depending on the application, other settings such as DSMAX, enable and sensing pins may also require to be configured.

The input voltage is provided to the CHL8103-06CRT, which is then processed through the internal PFET and NFETs to get an output voltage. The controller senses the voltage at the output and makes sure that the voltage remains constant over a range of load current.

The data sheet of the controller provides all the details on the operation conditions and parameters for the controller. It also specifies the operating limits for all the channels.

The controller also ensures that the current is efficiently and steadily managed throughout the entire operation. The integrated Digital SoftStart™ increases the PI section reference current ramp-up rate from 2.5mA/µs to 50mA/µs. Additionally, the D-Cap™ Mode improves light-load efficiency.

The SSC feature of CHL8103-06CRT reduces EMI, allowing the device to be used in applications where there are strict regulations on ambient radiation levels.

The CHL8103-06CRT is extremely versatile, and can be used in both synchronous and non-synchronous rectification architectures.

Conclusion

The CHL8103-06CRT is an advanced DC/DC controller with a number of features and applications. It is ideal for applications that require tight regulation and current sense circuitry, such as LED lighting, USB, and PoE. The integrated Digital SoftStart™, D-Cap™ Mode and SSC feature help to improve efficiency, output voltage ripple and reduce EMI. The CHL8103-06CRT can also be used in both synchronous and non-synchronous rectification architectures, making it a versatile and cost-effective solution for power management applications.

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