USB Power and Charging Port Controllers
WT6639F
【 General Description 】 |
The WT6639F is a highly integrated USB Power Delivery (USB PD) controller that supports USB PD 3.0 Programmable Power Supply (PPS) specification and Qualcomm® Quick ChargeTM 3+/4/4+/5 technologies. It is designed for USB Type-C® wall chargers and car chargers with multiple port solution. The multiple port solution offers a few design options, such as two USB Type-C ports (2C), two USB Type-C ports with two USB Std-A ports (2C2A), and etc. |
The WT6639F minimizes external components by integrating two sets of USB PD baseband PHY, USB Type-C cable detection, Vconn power supply (for E-marked cable), voltage and current monitors, NMOS load switch driver and an 8-Bit MCU to allow small form factor and low BOM cost. Wide operation voltage range (3V to 24V) supports USB PD 3.0 Programmable Power Supply (PPS) specification. |
The WT6639F is equipped with dual constant voltage (CV) and constant current (CC) features and can use I2C interface or FB pin to communicate with buck/boost controllers to control the output voltage and current of USB PD and fast charge adapters/chargers. A Multi-Time-Programmable (MTP) ROM is provided for program code and user configuration data and for any firmware update during development phase. |
The WT6639F offers both USB Type-C and USB Std-A cable, UFP device, detection to customize the output power of USB Type-C port once a cable insertion event is detected, hence fulfills the power sharing capacity for multiple port chargers. |
The WT6639F is certified by USB Implementers Forum (USB-IF) for USB PD 3.0 with PPS (TID: 5313). |
【 Features 】 | |
● | Integrated two USB-PD PHYs |
- Supports USB PD 3.0 including Programmable Power Supply (PPS) | |
- Programmable USB Type-C pull-up Rp | |
- Integrated VCONN power and switch for reading E-marked cable | |
● | Integrated two USB charge detect blocks, supports USB BC1.2 DCP, Quick Charge 3+/4/4+/5 |
● | Integrated two VBUS voltage/current control |
- Programmable constant voltage control | |
- Programmable constant current control | |
- Integrated high side current sense amplifier | |
- Cable drop compensation | |
● | Programmable fault protections |
- Over Voltage Protection (OVP) | |
- Under Voltage Protection (UVP) | |
- Over Current Protection (OCP) | |
- Over Temperature Protection (OTP) | |
● | CC1/CC2/D+/D- Pins Over Voltage Protection |
● | 10-bit ADC for voltage and current monitoring |
● | MCU |
- Turbo 8051 compatible MCU | |
- 32K bytes Multi-Time-Programmable (MTP) ROM | |
● | Integrated two driver for NMOS load switch |
● | Built-in discharge MOS transistor |
● | Internal RC oscillator |
● | Internal VDD regulator |
● | General purpose I/Os |
● | Supports power saving mode |
● | Operating voltage range: 3V to 24V (30V tolerant) |
● | Operating temperature range: -20°C to +105°C |
● | Package: 32-pin QFN |