Richtek's RT6190 4-switch bidirectional buck-boost controller is specifically designed for USB power delivery (USB PD) applications. With its wide input voltage range of 4.5 V to 36 V and programmable output voltage ranging from 3 V to 36 V, the RT6190 enables flexible power delivery configurations.
The RT6190 implements a peak current mode control mechanism, allowing it to deliver up to 100 W of power with programmable constant voltage (CV) and constant current (CC) output. It also incorporates built-in charge pumps that can drive external low-cost N-MOSFETs, effectively controlling the power path.
One of the standout features of the RT6190 is its I²C compatible interface, which provides seamless integration and easy configuration. Through this interface, users can access a variety of programmable functions, including CV/CC output, switching frequency adjustment, and cable voltage drop compensation. This level of customization ensures optimal performance and efficiency in various power delivery scenarios.
The RT6190 is equipped with comprehensive protection features to safeguard the system. These include input undervoltage lockout (UVLO), over/undervoltage protection, cycle-by-cycle current limit, short protection, and overtemperature protection. Such protections enhance the reliability and durability of the device.
The RT6190 is available in a compact WQFN-40L 5x5 package, enabling space-efficient designs and ease of integration into various applications.
In summary, Richtek's RT6190 4-switch bidirectional buck-boost controller offers a versatile solution for USB power delivery. With its wide input voltage range, programmable output voltage, and I²C interface for flexible configuration, it ensures efficient power delivery while providing robust protection measures for system reliability.
AnyPower™ for CV (12.5 mV/step, typ.) and CC (in 9-bit resolution) output settings
Bidirectional power delivery for forward and reverse operation
Embedded 2nd OCP function
I²C compatible interface
Adjustable soft-start time
Programmable cable voltage drop compensation
Built-in bleeders for quick VBUS discharge
Power good indicator
Fully protected with UVLO, OVP, UVP, OCP, cycle-by-cycle current limit, and OTP
Integrated buck-boost controller:
Wide input voltage range: 4.5 V to 36 V
Wide output voltage range: 3 V to 36 V
Peak current mode control
Programmable switching frequency: 250 kHz to 1 MHz
Power saving mode enables higher light load efficiency
Monitors
USB PD
Power banks
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