Weltrend | Products

USB PD controllers

WT6679F

The WT6679F is a highly integrated USB Power Delivery (USB PD) Dual-Role-Power (DRP) controller that supports USB PD 3.2 SPR & EPR 48V specification. It is designed for E-bike battery pack applications. It could support up to 14S (58.8V max.) battery pack. The WT6679F minimizes external components by integrating USB PD baseband PHY, USB Type-C detection, buck/boot converter control, voltage and current monitors, NMOS load switch driver, 400 kHz Master/Slave IIC, UART and an 8-bit MCU to allow small form factor and low BOM cost. Wide operation voltage range (3.3V to 66V) supports USB PD 3.2 SPR & EPR 48V specification. A Multi-Time-Programmable (MTP) ROM is provided for program code and user configuration data.

Features

- USB Type-C and USB-PD
- Supports USB PD 3.2 SPR & EPR 48V

- Source, Sink and DRP configurable

- Programmable USB Type-C pull-up Rp (current source)

- Sink CC termination (Rd)

- Dead battery operation

- Cable plug and orientation detection

- Integrated Vconn power and switch for E-marked & EPR-capable cable

- Connector liquid detection
- Fast Charge Protocols
- QC 3.0 (only support 5V to 12V) Source

- UFCS (5.5V to 21V), Source/Sink

- DP/DM cable plug-in detection

- Apple Mode
- Built-in buck/boot converter control
- Programmable constant voltage control

PPS 5V to 21V, 20mV/step

SPR AVS 9V to 20V, 100mV/step

EPR AVS 15V to 48V, 100mV/step

- Programmable constant current control
- Low-side bi-direction current monitor and reverse current detection
- Programmable fault protections
- OVP include VSYS, VBUS and VBAT

- UVP include VSYS, VBUS and VBAT

- OCP bi-directional and low side current sense

- Multiple OTP pins
- VBUS Load Switch Driver
- 12-bit ADC for voltage and current monitoring
- MCU
- Turbo 8051 compatible MCU

- 34K bytes Multi-Time-Programmable (MTP) ROM
- Two 400 kHz Master/Slave IICs
- One UART
- Built-in discharge MOS transistor (with internal over temperature protection)
- Supports power down mode: typical 10uA at cable detached
- Operating voltage range: 4V to 66V (71V Max. rating)
- Operating temperature range: -20°C to +105°C
- Green Package: 32-pin QFN (5mmx5mm)

Applications

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Desktop PCs & Notebooks

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