Features
- Integrated secondary-side protocol IC and USB type-C control for USB Power Delivery 3.1 EPR solutions and multiple D+/D- protocols
- Backwards compatible with USB PD 3.0 w/PPS
- Protocol interface
- Secondary-side regulation
- USB Type-C® NFET driver for disconnect function
- Supports USB PD 3.1 w/EPR and other RapidCharge™ protocols
- TDFN-16 5mm x 4mm package for small total solution size
- Intelligent, eco-friendly low standby power
- High resolution, accurate control over the output voltage and current
- Built-in digital loop compensation reduces external component count
- Programmable fast discharge to 5V at adapter unplug or voltage request
- Supports both DCM and CCM operation
- Rich protection for:
- Over-voltage (OVP)
- Over-current (OCP)
- User-configurable over-temperature
- USB PD-based power derating
- And many more
Description
The iW780 protocol IC is a highly flexible and programmable AC/DC interface controller that supports USB Power Delivery (PD) 3.1 and multiple D+/D- protocols. The device integrates protocol support, secondary-side regulation control and a USB Type-C® disconnect FET controller into one device for single-port and multi-port adapter designs.
The device pairs virtually with all of Renesas’s primary-side controllers including the iW9860, iW9801, and iW9802, enabling power supplies for fast charging up to 240W output power. With its integrated intelligence, the iW780 automatically enters a low power state at no-load to enable zero standby power solutions when paired with the iW9860 or the iW9870. For even higher efficiency, the device can be paired with the iW610 secondary-side synchronous rectifier controller to further increase active-mode efficiency.
Designed for multi-port applications, multiple iW780 devices can be used to control additional DC/DC converter stages on the secondary side, such as the ISL81401 or ISL8117, providing true multi-port solutions at power levels between 60W and 240W. The iW780 has several protection features and uses fully digital voltage compensation to eliminate the need for external passive components for loop compensation.
Parameters
| Attributes | Value |
|---|---|
| Function | Zero Standby Power when paired with iW9870, Support USB PD 3.1 with EPR, Support multiple D+/D- fast charging protocols, Accurate multi-level voltage and current control, Built-in digital loop compensation minimizes BOM cost, Support single and multi-port adaptors up to 240W |
| Supported Protocols | USB PD 3.0 w/PPS, USB PD 3.1 EPR |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TDFN-16L | 4 x 5 x 0.75 | 16 | 0.5 |
Application Block Diagrams
 | Wi-Fi-Connected Switch Mode Power Supply (SMPS) Wi-Fi and Bluetooth Low Energy SMPS enables ultra-low or zero standby power for efficient smart home devices. |
 | High Efficiency ZVS 140W USB-C Power Supply 140W USB-C power supply with SuperGaN, adaptive ZVS, smart PFC, and high efficiency at 28V/5A. |
 | 100W/140W USB-C & USB PD Power Supply USB-C & USB PD power supplies with multiple outputs, optimized efficiency, and cost-effective design. |
 | 65W USB-C Adapter with Zero Standby Power with Single and Dual Output Options Compact 65W USB-C adapter with USB PD 3.1 and ZSP design, single/dual-port charging, and high efficiency. |
Additional Applications
- USB Power Delivery 3.1 EPR power supplies
- Multi-port chargers and adapters
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Support Communities
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Request Design Files and Simulation files for PD3.1 compliant IC iW780 for developing 140 watt charger
Dear Renesas Team, I want design files and simulation files of PD3.1 compliant IC iW780 for developing 140 watt charger. Please provide me other required files also if needed.Regards,Pratik
Nov 18, 2025
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