RT1650WSC Evaluation Board your power partner. Wireless Power Receiver Compliant with WPC Purpose The RT1650 is a wireless power receiver compliant with WPC low power V1.1 standard. This document explains the function and use of the RT1650 evaluation board (EVB), and provides information to enable operation, modification of the evaluation board and circuit to suit individual requirements. Table of Contents Introduction............................................................................................................................................................ 2 Application ............................................................................................................................................................. 2 Specification .......................................................................................................................................................... 3 RT1650 Evaluation Board ...................................................................................................................................... 3 Schematic.............................................................................................................................................................. 4 Bill of Materials ...................................................................................................................................................... 5 More Information.................................................................................................................................................... 7 Important Notice for Richtek Evaluation Board ....................................................................................................... 7 EVB_RT1650WSC-01 September 2015 1 http://www.richtek.com RT1650WSC Evaluation Board your power partner. Introduction General Product Information The RT1650 is a wireless power receiver compliant with WPC low power V1.1 standard. The RT1650 integrates a synchronous full-bridge rectifier, a low dropout regulator, and a Micro Controller Unit (MCU) for control and communication. The device receives AC power from a WPC compatible wireless transmitter and provides output power up to 7.5W, which could be used as a power supply for a charger of mobile or consumer devices. The MCU-based controller can support bi-direction channel communication including Frequency Shift Keying (FSK) demodulation for power signal from the transmitter and Amplitude Shift Keying (ASK) modulation for power signal to the transmitter. The RT1650 provides Foreign Object Detection (FOD) function to meet the requirement after WPC LP V1.1. The RT1650 provides a programmable dynamic rectifier voltage control function to improve power efficiency, a programmable current limit for suitable load setting, and proper protection functions such as UVLO, OVP, and OTP. Product Feature Single-Chip WPC V1.1 Compliant Power Receiver Integrated Synchronous Rectifier Switch Support Output Power up to 7.5W Rectifier Efficiency up to 96% System Efficiency up to 80% Programmable Dynamic Rectifier Voltage Control for Optimized Transient Response and Power Efficiency Embedded 32-bit ARM Cortex-M0 MCU Easy Tuning for Communication and Control Parameters Support Bi-direction Channel Communication FSK Demodulation for Power Signal from Wireless Power Transmitter ASK Modulation for Power Signal to Wireless Power Transmitter Support Alignment with Transmitter Over Current Limit CSP 3.0mm x 3.4mm 48B (Pitch = 0.4mm) Low Profile (0.5mm Max.) Application WPC Compliant Receivers Cell Phones & Smart Phones Portable Electronic Devices EVB_RT1650WSC-01 September 2015 2 http://www.richtek.com RT1650WSC Evaluation Board your power partner. Specification Parameter Symbol Min Typ Max Unit Input Voltage Range VRECT 5 -- 10 V Output Voltage VOUT -- 5 -- V Output Current IO 0 -- 1.5 A Current Limit ILIM -- 1.6 -- A Operating Frequency fOSC 110 -- 205 kHz RT1650 Evaluation Board Please carefully inspect the EVB IC and external components, comparing them to the following Bill of Materials, to ensure that all components are installed and undamaged. If any components are missing or damaged during transportation, please contact the distributor or send e-mail to [email protected] Test Points The EVB is provided with the test points and pin names listed in the table below. Test point/ Pin name Signal Comment (expected waveforms or voltage levels on test points) TR1, TR2 Input voltage Power input. Connect with standard Qi Rx coil to receive AC power input. RECT Rectifier output The rectifier output. Connect 20µF capacitor to GND to reduce the voltage ripple. GND Ground Ground. OUT LDO output LDO support the 5V/1A output power. ADD Adapter input Adapter 5V input. This voltage connect to the OUT directly. EVB_RT1650WSC-01 September 2015 3 http://www.richtek.com RT1650WSC Evaluation Board your power partner. Power-up & Measurement Procedure 1. Connect input pin (TR1, TR2) with Qi standard coil. 2. Put the Rx coil on the WPC compatible Tx and let the cooper face to the Tx coil. 3. Waite few seconds for the communication and power up. The LED1(White LED) is for the vout ready and LED2 (Red LED) is for the vrect ready. 4. Customer can increase the loading to 1A from OUT pin slowly. Schematic EVB_RT1650WSC-01 September 2015 4 http://www.richtek.com RT1650WSC Evaluation Board your power partner. Bill of Materials Reference Qty Part number Description Package Manufacture U4 1 RT1650 RT1650 WL-CSP-48B 3x3.4 (BSC) RICHTEK U3 1 PMDPB80XP dual P-channel MOSFET NXP U6 1 C22TCH-05XT-1XBLX Micro-USB Connecter Cherng Weel 5 0603B473K500 47nF/50V/X7R 0603 WALSIN 2 0603B103K500 10nF/50V/X7R 0603 WALSIN C8, C11 2 C1608X7R1H474KT 0.47µF/50V/X7R 0603 TDK C9, C12 2 0603B223K500 22nF/50V/X7R 0603 WALSIN C13, C15 2 GRM31CR71E106KA12L 10µF/25V/X7R 1206 muRata C14, C17 1 C1608X7R1H104KT000N 0.1µF/25V/X7R 0603 TDK C16 1 C2012X7R1E105KT 1µF/25V/X7R 0805 TDK C18, C19 2 C1608X5R1E105KT000E 1µF/25V/X5R 0603 TDK C36 1 0603N101J500 100pF/50V/NPO 0603 WALSIN C38 1 0603B182K500 1.8nF/50V/X7R 0603 WALSIN LED1 1 LNL-190UW-4H LED LighTop LED2 1 LNL-191SUR LED LighTop RNTC1 1 NC 0603 2 NC 0603 C1, C2, C3, C4 C7, C10 RUSB1, RUSB2 RUSB3 1 0R 0Ω 0603 R14 1 24K 24kΩ 0603 R15 1 10K 10kΩ 0603 R11 1 1K5 1.5kΩ 0603 Coil 1 WR483245-15F5-G 12.9µH TDK Enable thermal management : RNTC = NCP15WF104F03RC, R14 = 33k EVB_RT1650WSC-01 September 2015 5 http://www.richtek.com RT1650WSC Evaluation Board your power partner. EVB Layout Top Layer Bottom Layer Operating Guideline 1. Connect receiver coil to TR1 and TR2 pins respectively. 2. Connect positive end and negative end of load to OUT and GND pins respectively. 3. Power on transmitter and place the receiver coil on the surface of transmitter interface. 4. When the receiver output is turned on, the LED will be turned on as an indicator EVB_RT1650WSC-01 September 2015 6 http://www.richtek.com RT1650WSC Evaluation Board your power partner. More Information For more information, please find the related datasheet or application notes from Richtek website http://www.richtek.com. Important Notice for Richtek Evaluation Board THIS DOCUMENT IS FOR REFERENCE ONLY, NOTHING CONTAINED IN THIS DOCUMENT SHALL BE CONSTRUED AS RICHTEK’S WARRANTY, EXPRESS OR IMPLIED, UNDER CONTRACT, TORT OR STATUTORY, WITH RESPECT TO THE PRESENTATION HEREIN. IN NO EVENT SHALL RICHTEK BE LIABLE T O BUYER OR USER FOR ANY AND ALL DAMAGES INCLUDING WITHOUT LIMITATION TO DIRECT, INDIRECT, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES. EVB_RT1650WSC-01 September 2015 7 http://www.richtek.com