APK43070

Description

The APK43070 is a single-chip synchronous buck controller (SBC) with USB Type-C ® PD3.1 source controller to support standard power range (SPR)/programmable power supply (PPS) up to 21V, and extended power range (EPR)/adjustable voltage supply (AVS) up to 28V. It is targeted for DC power provider and control of single-port or multiple-port charging applications.

The compact buck controller in APK43070 is a constant frequency synchronous step-down controller with high driving capability, optimized dead time, and high driving gate voltage to cover middle- and high-power charging with integrated drivers for external N-MOSFETs. To further enhance the converter power efficiency, the VIN DC power pass-through mode is supported.

The APK43070 integrates the SBC and PD3.1 decoder functions and results in small footprint and reduced PCB size for high-power-density charging applications. By leveraging the MOS switches of synchronous buck regulation, the PD output MOS switch for each port could be saved to reduce BOM cost.

To support higher power efficiency, extremely low standby power, and smart power sharing for multiple-port applications without the need of external MCU, the APK43070 integrates I2C interface, master/slave addressing scheme, and interrupt/wake-up mechanism. Up to 8 port addresses are supported through resistor selection.

Due to its high-voltage process, the APK43070 offers VBUS short protection on CC1/CC2 pins up to 30V. Meanwhile, the APK43070 provides comprehensive safety protection, including overvoltage protection (OVP), overcurrent protection (OCP), overtemperature protection (OTP), and moisture detection of the connector.  

Feature(s)

• Single-Chip Buck Controller with Type-C PD3.1 Source Controller
• Support USB PD3.1 EPR/AVS Up to 28V, SPR/PPS Up to 21V
• Operating Switching Frequency is 125kHz/250kHz/400kHz Configurable via GPIO3
• Support Power Sharing Through I2C
• Support High PWM Duty Cycle Up to 95% @125kHz/90% @ 400kHz
• Operating Input Voltage 4V to 36V
• Support Bypass Mode to Enhance Output Power Efficiency
• Frequency Dithering for EMI Restraining
• Support Legacy BC1.2, and QC3.0/4/4+/5.0
• Support External OTP by TS Pin
• Support I2C-Based Topology Up to 8 Ports Without External MCU
• Support I2C Addresses Up to 8 and Assigned by GPIO1
• Support PDO Profiles Selected by GPIO2
• Support Extremely Low Standby Power (< 120µA) with Wake-Up
• Support Comprehensive Protection Schemes — OVP, UVP, OCP, OTP and Moisture Detection of the Connector with Autorecovery
• VBUS Short Protection on CC1/CC2 and DP/DN Pins Up to 30V
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Extremely low standby power multiple-port Type-C PD3.1 SPR and EPR chargers, adapters, power strips or power hubs
• Type-C PD3.1 SPR and EPR charging for high-voltage battery of portable outdoor generators
• Type-C PD3.1 SPR and EPR chargers for general-purpose charging applications