PD70101 Datasheet | Microchip Technology

features designed to improve efficiency and reliability: - Detection and Classification: The front-end interface includes detection and classification circuitry. The detection signature resistor is disconnected upon pletion of the detection phase. The system then begins the classification phase. Classification can be configured for Classes 0 to 4 via an external resistor. The PD70201 includes a two-events classification identification circuit, which generates a flag to inform the PD application whether the Power Source Equipment (PSE) is Type 1 or Type 2. - Capacitor: A current-limited internal MOSFET switch charges the input capacitor of the DC-DC converter. This capacitor is discharged in a timely manner when the input power is removed. - Gate drivers: The PWM DC-DC controller has two built-in gate drivers designed to swing between VCC and GND. These two out-of-phase driver stages can be configured for synchronous rectification or active clamp. - Peak current mode control: The DC-DC converter employs peak current mode control for better line and load step response. The switching frequency can be set from 100 k Hz to 500 k Hz, enabling a size and efficiency trade off. - Maximum duty cycle is limited to 50% to reduce the power MOSFET switch voltage to two times the input voltage; a 150V rated MOSFET can be used for the primary side switch. The secondary synchronous MOSFET voltage rating depends on the output voltage and can be higher or lower than the primary side MOSFET switch. - Soft-Start circuit: The devices include a soft-start circuit to control the output voltage rise time (user settable) at start-up, and to limit the inrush current. An integrated startup bias circuit powers the DC-DC controller, until the device starts up by the voltage generated by the bootstrap circuit. - Low Voltage Protection Warning and Monitoring: Dual Under Voltage Lock Out (UVLO), which monitors both the Po E Port Input Voltage and VCC, ensures reliable operation during any system...