The new battery pack integrated with Type-C interface supports bidirectional high-power charging and discharging on a single TYPE-C interface. QC2.0/3.0 protocol is optional and the maximum input/output is 100 W (5 A E-Mark cable required). As a SoC controller chip, UM3506 is responsible for implementing board-level system policy/status control and indication for the main control of the mobile power supply. Combined with the bidirectional BUCK-BOOST power supply IC, the chip can access and control the external power supply IC via the standard I2C digital serial interface / PWM interface to enable charging-discharging / boost-buck / power system setting, etc. The solution can be easily integrated on the BMS board.
PD/Type-C DRP bidirectional solution, one Type-C
Supporting 3–6 strings of battery
Type-C port output: 5/9/12/15 V @ 3 A, 20 V/5 A MAX (E-Mark 5 A cable required)
Type-C port input: arbitrary input, up to 20 V/5 A (customizable within 60–100 W as required)
USB A port power output optional
Hardware-level secondary protection available, BMS primary protection optional
UM3506 implements PD DRP protocol, power management, BMS, and communication with electric tools to ensure the safety of charging and discharging.
As a more advanced physical interface, USB Type-C can provide a variety of control and transmission channels under full-featured full PIN (24PIN). With the cooperation of PD protocol, power negotiation and interface working mode negotiation can be carried out, thus enabling the corresponding channel functions. The Type-C DP ALT mode is accomplished through the negotiation process of USB PD protocol, which uses the protocol interaction of VDM in PD protocol to allow connected devices to access data transfer functions such as DP.
UM3506 series of Unicmicro is a USB PD/Type-C interface controller chip that supports the latest USB PD3.1 protocol and DP ALT mode, making it ideal for versatile Type-C interface solutions such as notebooks, docking stations, AR/VR devices, displays, etc. Adopting flexible and programmable architecture combining software and hardware and an internal TCPM/TCPC layered architecture, UM3506 integrates a native TCPC-like front-end module, high-performance 32-bit RISC-V core, large-capacity Flash memory, SRAM memory, enhanced peripheral interfaces and rich system resources, greatly facilitating the secondary development by customers.
UM3506-based DP ALT system solution specification:
USB C1 reverse charging port
PD3.0/3.1 140W SINK
USB C2 supporting full-featured interface
PD source 65W
DP SINK (RX)
2-/4-lane DP transmission mode, 8-K HDR video transmission
DP native interface
Software platform configuration in UM3506 system solution:
FreeeRTOS embedded open source operating system
Full-featured PD library
Open-source DP ALT protocol library
Flexible and easy-to-use CLI user interface
In this reference solution, UM3506 PD+ SoC controller chip with RISC-V core is used to realize PD3.1 protocol interaction, bidirectional BUCK-BOOST power chip management, system control, etc.
Adopting flexible and programmable architecture combining software and hardware, UM3506 integrates an internal TCPM/TCPC layered architecture, a native TCPC-like front-end module including digital logic and analog circuits for Type-C interface detection and control, the packet BMC codec in PD PHY layer and key functions with strict timing requirements in PD protocol layer. It is also provided with high-performance 32-bit RISC-V microprocessor core, large-capacity Flash memory, SRAM memory, enhanced peripheral interfaces and rich system resources.
6–7 strings of battery cells
PD3.1 140-W DRP
Full-stack PD DRP protocol
Supporting SPR PPS, EPR AVS
Flexible VDM message expansion capability
Complete charging and discharging power strategy of the system
Supporting power statistics
Optional system status displays (indicator display, LCD screen display, etc.)
Online upgrade available for UM3506 master
TYPE-C port expansion for TCPM + TCPC architecture
Founded in September 2017, Unicmicro (Guangzhou) Co., Ltd. specializes in R&D, design and sales of low-power IoT chips, providing customers with innovative turnkey solutions in new energy, industrial control and IoT applications. We offer differentiated products featuring high performance and low power consumption, including industrial real-time microcontroller chips, low-power mixed-signal microprocessor chips, wireless RF chips, PD fast-charging controller chips, and analog dedicated chips.