RDK-641: 40W, 8V @ 5A, 85 ~ 265 VAC

Summary

RDK-641 is a 5 A CV/CC charger (3 V to 8 V range), which switches to constant power in the 8 V to 20 V range using the InnoSwitch3- Pro and Microchip's PIC16F18325 microcontroller. PIC16F18325 controls the InnoSwitch3-Pro via an I2 C interface, programming its COMMAND and telemetry registers. This design shows the high-power density and efficiency that is possible from the high level of integration in the InnoSwitch3-Pro controller. The report contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.

The InnoSwitch3-Pro series family of ICs dramatically simplifies the development and manufacturing of fully programmable, highly efficient power supplies, particularly those in compact enclosures. The universal I2 C interface enables dynamic control of output voltage and current along with many configurable features. Telemetry provides reporting of programmed features and fault modes.

InnoSwitch3-Pro devices are ideal for AC/DC power supply applications where fine (10 mV, 50 mA) output voltage and current adjustment are necessary. Typical implementations comprise a system microprocessor or dedicated microcontroller with an I2 C port that is used to configure, control and supervise operation of the power sub-system. The uVCC pin provides a bias supply for the microprocessor in stand-alone implementations such as USB PD adapters and chargers.

Specifications

Manufacturer	Power Integrations
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	596-1814-ND
Eval Board Supplier	Power Integrations
Eval Board	Normally In Stock
AC Voltage	Universal (115 / 230V)
Outputs and Type	1 Isolated
Voltage Out	3 ~ 20 V
Current Out	Up to 5 A
Output Power	40 W
Features	MCU Controlled Over Voltage Protection Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>90%, 110 ~ 265VAC in, 20V @ 2 A >90%, 110 ~ 265VAC in, 15V @ 2.66 A >88%, 105 ~ 265VAC in, 8V @ 5 A >86%, 85 ~ 265VAC in, 5V @ 5 A >84%, 105 ~ 205VAC in, 3V @ 5 A
No-load Input Power @ Voltage	<30 mW @ 85 ~ 265 VAC
Switching Frequency	25 ~ 95 kHz
Internal Switch	No
Component Count + Extras	62 + 10
Voltage In	85 ~ 265 VAC
Design Author	Power Integrations
Application / Target Market	Battery Chargers Lighting: LED Commercial Lighting Lighting: LED Home Lighting Lighting: LED Signage Power: Auxiliary Power Supply USB Powered Devices
Main I.C. Base Part	INN3377C
Date Created By Author	2018-08
Date Added To Library	2018-12