IW1791-02

iW1791 AC/DC Primary-Side Rapid ChargeTM PWM Controller with High Resolution Voltage/Current Control 1 Description The iW1791 is a high performance AC/DC power supply controller for rapid charge applications that supports high resolution voltage/current control. It uses Dialog’s PrimAccurateTM technology to minimize external component count and simplify system design. The device operates in quasi-resonant mode to provide high efficiency and it also provides a number of key built-in protection features. The iW1791 can achieve tight multi-level constant voltage and multi-level constant current regulation without a traditional secondary feedback circuit. It also eliminates the need for loop compensation components while maintaining stability over all operating conditions. The iW1791 is optimized to work with Dialog’s secondary-side controllers that use the proprietary digital link (DLNK) technology. The iW1791 and DLNK-based secondary-side controller chipset together can implement various rapid charge protocols, such as USB Power Delivery (USB PD), Qualcomm® Quick Charge™ 2.0 and 3.0 (QC2.0 and QC3.0) technologies, etc. to achieve fast and smooth voltage transitions upon request by mobile devices (MD). The iW1791 and compatible secondary-side controller from Dialog use the DLNK communction protocol for output voltage requests, output current limits, output voltage undershoot and over voltage information from the secondary to the primary. In addition, the iW1791 uses source charging technology to charge up VCC before startup, which eliminates the external active start-up (ASU) circuit and still can achieve < 20mW no-load power consumption at typical 5V output setting. Dialog’s innovative proprietary technology ensures that power supplies designed with the iW1791 and Dialog’s secondary-side controllers can provide output voltage configurations of 3V to 20V for USB PD, 5V/9V/12V for QC2.0 and 3.6V to 12V in 200mV increments for QC3.0 and other proprietary protocols. 2 Features ●● Supports 10mV DLNK voltage step request required by USB PD programmable power supply (PPS) and other proprietary rapid charge protocols ●● No audible noise over entire operating range ●● Source charging VCC technology eliminates the active start-up (ASU) and maintain ultra-low no-load power consumption (< 20mW) at 230VAC with typical 5V output setting ●● User-configurable 4-level cable drop compensation independent of output voltage ●● Proprietary secondary-to-primary digital communication with single optocoupler for all the rapid charge information: xx Output voltage request ●● High VCC pin voltage rating eliminates external VCC LDO xx Output current limit ●● Tight multi-level constant-voltage and multi-level constant-current regulation with primary-side feedback and control xx Output voltage undershoot detection for fast dynamic load response xx Over-voltage protection ●● Proprietary optimized load adaptive maximum constant ●● EZ-EMI® design enhances manufacturability frequency PWM switching with quasi-resonant operation achieves best size, efficiency, and common ●● Built-in single-point fault protections against output mode noise short-circuit including soft short and half short, output over-voltage, and output over-current ●● Backward compatible with QC2.0/3.0 and other proprietary rapid charge protocols with secondary-side interface circuits ●● Multi-mode PWM/PFM control improves efficiency at various load conditions ●● SmartDefender+TM control technology addresses issues of soft shorts in cables and connectors by effectively reducing the average output power at fault conditions without latch 3 Applications ●● Rapid-charging AC/DC adapters for smart phones, tablets and other portable devices. Qualcomm® Quick ChargeTM 2.0 and 3.0 are products of Qualcomm Technologies, Inc. Product Summary www.dialog-semiconductor.com Rev. 1.2 1 of 6 11-Jan-2018 © 2018 Dialog Semiconductor iW1791 AC/DC Primary-Side Rapid ChargeTM PWM Controller with High Resolution Voltage/Current Control L + + + + VBUS N - GND U3 iW676 U1 iW1791 R1 1 DRAIN 2 SOURCE VCC 5 3 OUT GND 4 VIN 6 + VCC 8 1 GND 2 DLNK GATE 7 3 VSENSE SOURCE 6 4 CFG ISENSE 5 U2 iW656 1 DIS R2 2 DRV D+ 12 D+ GND 11 3 VCC D- 10 4 DET SD 9 5 VBUS CC1 8 6 VBUS_G CC2 7 D- CC1 CC2 USB Type-C Socket Figure 3.1 : iW1791 Typical Application Circuit for Standard USB PD with Optional QC2.0/QC3.0 Enabled (Using iW656 as Secondary-Side Controller for USB PD and iW676 as Synchronous Rectifier Controller.) Product Summary www.dialog-semiconductor.com Rev. 1.2 2 of 6 11-Jan-2018 © 2018 Dialog Semiconductor iW1791 AC/DC Primary-Side Rapid ChargeTM PWM Controller with High Resolution Voltage/Current Control 4 Pinout Description iW1791 1 GND 2 VCC 8 DLNK GATE 7 3 VSENSE SOURCE 6 4 CFG ISENSE 5 Figure 4.1 : 8-Lead SOIC-8 Package Pin Number Pin Name Type 1 GND Ground Pin Description Ground. 2 DLNK Analog Input Digital communication link signal. Used for secondary-side to primary-side communication for all rapid change information, which includes output voltage requests, output current limits, output voltage undershoot, and over-voltage protection. 3 VSENSE Analog Input Auxiliary voltage sense. Used for primary-side regulation and secondary-to-primary communication through main transformer. 4 CFG Analog Input Used for CDC configuration and auxiliary winding open protection. 5 ISENSE Analog Input Primary-side current sense. Used for cycle-by-cycle peak-current control and limit in primary-side CV/CC regulation. 6 SOURCE Power Input Connect to the source of external power MOSFET. Inside the IC, it is connected to internal MOSFET and startup VCC charge circuit. 7 GATE Output 8 VCC Power Input Product Summary www.dialog-semiconductor.com Gate drive for external MOSFET switch. IC power supply. Rev. 1.2 3 of 6 11-Jan-2018 © 2018 Dialog Semiconductor iW1791 AC/DC Primary-Side Rapid ChargeTM PWM Controller with High Resolution Voltage/Current Control 5 Absolute Maximum Ratings Absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. For maximum safe operating conditions, refer to the Electrical Characteristics section. Parameter Symbol Value Units DC supply voltage range (pin 1, ICC = 20mA max) VCC -0.3 to 45.0 V Continuous DC supply current at VCC pin (VCC = 15V) ICC 20 mA VSENSE input (pin 3, IVsense ≤ 10mA) -0.7 to 10.0 V CFG (pin 4) -0.7 to 5.0 V DLNK (pin 2) -0.3 to 5.5 V ISENSE input (pin 5) -0.7 to 5.0 V SOURCE input (pin 6) -0.7 to 25.0 V -0.3 to 30 V GATE (pin 7) Maximum junction temperature TJMAX 150 °C Operating junction temperature TJOPT -40 to 150 °C Storage temperature TSTG -65 to 150 °C θJA 160 °C/W ±2,000 V ±100 mA Thermal resistance junction-to-ambient ESD rating per JEDEC JESD22-A114 Latch-up test per JESD78D Product Summary www.dialog-semiconductor.com Rev. 1.2 4 of 6 11-Jan-2018 © 2018 Dialog Semiconductor iW1791 AC/DC Primary-Side Rapid ChargeTM PWM Controller with High Resolution Voltage/Current Control 6 Physical Dimensions 7 Ordering Information Options Part Number Default kCC at Start-up CC Shutdown Voltage OVP/ OTP Latch iW1791-00 USB PD/QC 0.422 66% for all VBUS except 6.5V for VBUS = 9V No No 25mV/Step SOIC-8 Tape & Reel1 iW1791-01 USB PD/QC 0.422 2.9V for VBUS ≤ 12V 3.2V for VBUS > 12V No No 25mV/Step SOIC-8 Tape & Reel1 iW1791-02 USB PD/QC 0.422 2.9V for VBUS ≤ 12V 3.2V for VBUS > 12V No No 10mV/Step SOIC-8 Tape & Reel1 iW1791-22 USB PD/QC 0.422 2.9V for VBUS ≤ 12V 3.2V for VBUS > 12V Yes No 10mV/Step SOIC-8 Tape & Reel1 0.422 2.9V for VBUS < 3.4V; 3.0V for 3.4V ≤ VBUS < 9V; 6.5V for 9V ≤ VBUS < 12V; 10V for VBUS ≥ 12V Yes No 10mV/Step SOIC-8 Tape & Reel1 Protocol Supported iW1791-23 USB PD/QC CC Supported DLNK Package Description Shutdown Voltage Information Latch Resolution Note 1: Tape & Reel packing quantity is 2,500/reel. Minimum packing quantity is 2,500. Product Summary www.dialog-semiconductor.com Rev. 1.2 5 of 6 11-Jan-2018 © 2018 Dialog Semiconductor iW1791 AC/DC Primary-Side Rapid ChargeTM PWM Controller with High Resolution Voltage/Current Control Disclaimer Information in this document is believed to be accurate and reliable. However, Dialog Semiconductor does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information. Dialog Semiconductor furthermore takes no responsibility whatsoever for the content in this document if provided by any information source outside of Dialog Semiconductor. Dialog Semiconductor reserves the right to change without notice the information published in this document, including without limitation the specification and the design of the related semiconductor products, software and applications. Applications, software, and semiconductor products described in this document are for illustrative purposes only. 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All other product or service names are the property of their respective owners. Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries. Qualcomm Quick Charge is a trademark of Qualcomm Incorporated. All Qualcomm Incorporated marks are used with permission. © 2018 Dialog Semiconductor. All rights reserved. RoHS Compliance Dialog Semiconductor’s suppliers certify that its products are in compliance with the requirements of Directive 2011/65/EU of the European Parliament on the restriction of the use of certain hazardous substances in electrical and electronic equipment. RoHS certificates from our suppliers are available on request. Contacting Dialog Semiconductor United Kingdom (Headquarters) Dialog Semiconductor (UK) LTD Phone: +44 1793 757700 North America Dialog Semiconductor Inc. Phone: +1 408 845 8500 Hong Kong Dialog Semiconductor Hong Kong Phone: +852 2607 4271 China (Shenzhen) Dialog Semiconductor China Phone: +86 755 2981 3669 Germany Dialog Semiconductor GmbH Phone: +49 7021 805-0 Japan Dialog Semiconductor K. K. Phone: +81 3 5769 5100 Korea Dialog Semiconductor Korea Phone: +82 2 3469 8200 China (Shanghai) Dialog Semiconductor China Phone: +86 21 5424 9058 The Netherlands Dialog Semiconductor B.V. Phone: +31 73 640 8822 Taiwan Dialog Semiconductor Taiwan Phone: +886 281 786 222 Email info_pcbg@diasemi.com Web site: www.dialog-semiconductor.com Product Summary www.dialog-semiconductor.com Rev. 1.2 6 of 6 11-Jan-2018 © 2018 Dialog Semiconductor