18W USB PD rapid-charger reference design

April 26, 2017 // By Julien Happich
In partnership with USB Type-CTM Power Delivery (PD) controllers provider Weltrend Semiconductor, Power Integrations announced a joint reference design describing an 18W, USB PD compliant, AC-DC power converter targeted at chargers for smart mobile devices.

The DER-567 design pairs the WT6630P USB Type-C PD controller from Weltrend with Power Integrations’ InnoSwitch-CP off-line CV/CC flyback switcher IC, enabling designers to produce a compact and highly energy-efficient standards-compliant power adapter.

Weltrend’s WT6630P USB PD controller is certified by USB Implementers Forum (USB-IF)  for USB Type-C and is compatible with the USB PD 2.0 baseband communication protocol. The Weltrend device reduces the BOM by combining Type-C cable detection circuits, USB PD physical layer (PHY), and components related to system-level protections such as over-voltage protection (OVP), over-current protection (OCP), and over-temperature protection (OTP).

By providing a constant power output, Power Integrations’ InnoSwitch-CP switcher IC allows battery-operated devices to draw maximum power from the charger at any selected output voltage, optimizing charge time and cost. Reference Design DER-567 implements USB PD standard 2.0 and is capable of 5 V/3 A and 9 V/2 A of power delivery over a standard non-E-marked USB Type-C cable.

Weltrend Semiconductor - www.weltrend.com

Power Integrations - www.power.com