IW1760-01

iW1760 Product Brief Off-Line Digital Quasi-Resonant PWM Controller 2.0 Description ●● User-configurable 5-level cable drop compensation provides design flexibility ●● EZ-EMI® design enhances manufacturability ●● Adaptive multi-mode PWM/PFM control improves efficiency ●● No external loop compensation components required S N IG Dialog’s innovative proprietary technology ensures that power supplies built with the iW1760 can achieve both highest average active efficiency and less than 50mW noload power consumption in 20W output power range, and have fast yet smooth start-up with a wide range of capacitive loads with output voltage up to 12V, and are ideal for network and monitor adapter applications. D ED ●● Built-in single-point fault protections against output short-circuit, output over-voltage, output over-current, and current-sense-resistor-short fault ES ●● Proprietary optimized 79kHz maximum PWM switching frequency with quasi-resonant operation achieves best size, efficiency and common mode noise D ●● Tight constant-voltage regulation across line and load range EW ●● Adaptively controlled soft-start enables fast and smooth start-up for a wide range of capacitive loads (from 330μF to 6,000μF) with output voltage up to 12V N ●● Primary-side feedback eliminates opto-isolators and simplifies design The iW1760 is a high performance AC/DC power supply controller which uses digital control technology to build peak current mode PWM flyback power supplies. The device operates in quasi-resonant mode to provide high efficiency along with a number of key built-in protection features while minimizing the external component count, simplifying EMI design and lowering the total bill of material cost. The iW1760 removes the need for secondary feedback circuit while achieving excellent line and load regulation. It also eliminates the need for loop compensation components while maintaining stability over all operating conditions. Pulse-by-pulse waveform analysis allows for a loop response that is much faster than traditional solutions, resulting in improved dynamic load response. The built-in power limit function enables optimized transformer design in universal off-line applications and allows for a wide input voltage range. R ●● No-load power consumption < 50mW at 230VAC along with fast dynamic load response and short turn-on delay in typical 20W and above adapter applications FO 1.0 Features EN ●● Dedicated pins for external over-temperature protection and over-voltage protection, with latch function available M M ●● Tight constant current control enables output current limit and over-load protection 3.0 Applications ●● Power adapters for network devices and monitors ●● AC/DC power supplies in home appliances ●● Universal input AC/DC adapters (15W - 40W) O ●● No audible noise over entire operating range L EC N + + VOUT O T R RTN N U1 iW1760 NTC VCC 8 1 VSENSE 2 SD 3 CFG OUTPUT 6 4 ASU ISENSE 5 + GND 7 R CDC Figure 3.1: iW1760 Typical Application Circuit (Using Depletion Mode N-FET as Active Start-up Device) (Achieving < 50mW No-load Power Consumption in 20W Adapter Designs) Rev. 0.4 PRELIMINARY iW1760 March 13, 2018 Page 1 iW1760 Product Brief Off-Line Digital Quasi-Resonant PWM Controller L N VOUT + + IG N S RTN VCC 8 1 VSENSE 2 SD 3 CFG OUTPUT 6 4 ASU ISENSE 5 + N EW D GND 7 R CDC NTC ES U1 iW1760 R Figure 3.2: iW1760 Typical Application Circuit (Alternative Circuit without Using Active Start-up Device) FO Note: Pin 4 (ASU) can be left unconnected if an active start-up device is not needed in the application circuit. ED 4.0 Pinout Description D iW1760 VSENSE VCC 8 2 SD GND 7 3 CFG OUTPUT 6 4 ASU ISENSE 5 Name 1 VSENSE T CFG N 3 SD O 2 Type Figure 4.1: 8 Lead SO-8 Package Pin Description R Pin # EC O M M EN 1 Analog Input Auxiliary voltage sense (used for primary regulation). External shutdown control. Used for external over-temperature protection (OTP) by connecting an NTC resistor from this pin to Ground. Used for external cable drop compensation (CDC) configuration and Analog Input supplemental over-voltage protection (OVP). Analog Input 4 ASU 5 ISENSE 6 OUTPUT Output Gate drive for external MOSFET switch. 7 GND Ground Ground. 8 VCC Power Input Rev. 0.4 PRELIMINARY Output Control signal for active start-up device (BJT or depletion mode N-FET). Analog Input Primary current sense. Used for cycle-by-cycle peak current control and limit. Power supply for control logic. iW1760 March 13, 2018 Page 2 iW1760 Product Brief Off-Line Digital Quasi-Resonant PWM Controller 5.0 Absolute Maximum Ratings Absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. Value Units DC supply voltage range (pin 8, ICC = 20mA max) VCC -0.3 to 18.0 V Continuous DC supply current at VCC pin (VCC = 15V) ICC 20 N S Symbol mA ASU output (pin 4) -0.3 to 18.0 V OUTPUT (pin 6) ES IG Parameter -0.3 to 18.0 V -0.7 to 4.0 V -0.3 to 4.0 V -0.3 to 4.0 V -0.8 to 4.0 V TJMAX 150 °C TJOPT -40 to 150 °C TSTG –65 to 150 °C θJA 160 °C/W 2,000 V ±100 mA D VSENSE input (pin 1, IVsense ≤ 10mA) EW ISENSE input (pin 5) SD (pin 2) N CFG (pin 3, ICFG ≤ 20mA) R Maximum junction temperature FO Operating junction temperature Storage temperature ED Thermal resistance junction-to-ambient D ESD rating per JEDEC JESD22-A114 N O T R EC O M M EN Latch-up test per JEDEC 78 Rev. 0.4 PRELIMINARY iW1760 March 13, 2018 Page 3 iW1760 Product Brief Off-Line Digital Quasi-Resonant PWM Controller 6.0 Physical Dimensions 8-Lead Small Outline (SOIC) Package H e h x 45° A2 A1 0.0040 0.010 0.10 0.25 A2 0.049 0.059 1.25 1.50 B 0.014 0.019 0.35 0.49 C 0.007 0.010 0.19 0.25 D 0.189 0.197 4.80 5.00 E 0.150 0.157 3.80 4.00 e A SEATING PLANE L α C S MAX N 1.75 0.050 BSC 1.27 BSC H 0.228 0.244 5.80 6.20 h 0.10 0.020 0.25 0.50 L 0.016 0.049 0.4 1.25 α 0° 8° FO R COPLANARITY 0.10 (0.004) B 1.35 EW A1 0.069 IG 4 MIN 0.053 ES 1 MAX A Millimeters D 5 MIN N E 8 Inches Symbol D Compliant to JEDEC Standard MS12F Controlling dimensions are in inches; millimeter dimensions are for reference only ED This product is RoHS compliant and Halide free. EN D Soldering Temperature Resistance: [a] Package is IPC/JEDEC Std 020D moisture sensitivity level 1 [b] Package exceeds JEDEC Std No. 22-A111 for solder immersion resistance; package can withstand 10 s immersion < 260˚C M Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.15 mm per end. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25 mm per side. EC O M The package top may be smaller than the package bottom. Dimensions D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. Options Package Description iW1760-00 No OVP/OTP latch SOIC-8 Tape & Reel1 iW1760-01 OVP/OTP latch SOIC-8 Tape & Reel1 N O T Part Number R 7.0 Ordering Information Note 1: Tape & Reel packing quantity is 2,500 per reel. Minimum ordering quantity is 2,500. Rev. 0.4 PRELIMINARY iW1760 March 13, 2018 Page 4 iW1760 Product Brief Off-Line Digital Quasi-Resonant PWM Controller Disclaimer S 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. IG N 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. D ES Applications, software, and semiconductor products described in this document are for illustrative purposes only. Dialog Semiconductor makes no representation or warranty that such applications, software and semiconductor products will be suitable for the specified use without further testing or modification. Unless otherwise agreed in writing, such testing or modification is the sole responsibility of the customer and Dialog Semiconductor excludes all liability in this respect. EW Customer notes that nothing in this document may be construed as a license for customer to use the Dialog Semiconductor products, software and applications referred to in this document. Such license must be separately sought by customer with Dialog Semiconductor. N All use of Dialog Semiconductor products, software and applications referred to in this document are subject to Dialog Semiconductor’s Standard Terms and Conditions of Sale, available on the company website (www.dialog-semiconductor.com) unless otherwise stated. R Dialog and the Dialog logo are trademarks of Dialog Semiconductor plc or its subsidiaries. All other product or service names are the property of their respective owners. FO © 2018 Dialog Semiconductor. All rights reserved. RoHS Compliance T R EC O M M EN D ED 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. N O 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 Rev. 0.4 PRELIMINARY iW1760 March 13, 2018 Page 5