IW1816-20-SO7 Dialog Semiconductor

iW1816 Off-Line Digital Green-Mode PWM Controller Integrated with Power BJT and OTP 1 Description The iW1816 is a high performance AC/DC power supply control device which uses digital control technology to build peak current mode PWM flyback power supplies. This device includes an internal power BJT and 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 iW1816 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 in all operating conditions. The pulse-by-pulse waveform analysis allows for a loop response that is much faster than traditional solutions, resulting in improved dynamic load response for both one-time and repetitive load transients. The built-in power limit function enables optimized transformer design in universal off-line applications and allows for a wide input voltage range. Dialogs innovative proprietary technology ensures that power supplies built with the iW1816 can achieve highest average efficiency, lowest standby power consumption, and fast smooth startup with a wide range of output voltage (5V, 12V and above) and capacitive loads (from 330F to 6,000F). 2 Features TM PrimAccurate primary-side feedback eliminates Quasi-resonant operation for highest overall efficiency opto-isolators and simplifies design EZ-EMI design easily meets global EMI standards Internal 800-V bipolar junction transistor (BJT) Very tight constant voltage and constant current Adaptively controlled soft start-up enables fast and regulation with primary-side-only feedback smooth start-up for a wide range of output voltage (5V, No external compensation components required 12V and above) and capacitve loads up to 6,000F Built-in single-point fault protections against output 64kHz PWM switching frequency short circuit, output over-voltage, and current-sense- No-load power consumption < 30mW at 230V with resistor short-circuit faults AC typical application circuit Built-in over-temperature protection (OTP) Fast dynamic load response for both one-time and No audible noise over entire operating range repetitive load transients Adaptive multi-mode PWM/PFM control improves efficiency 3 Applications Low-power AC/DC power supply for smart meters, motor control, home appliances, networking devices and industrial applications Linear AC/DC replacement 30-Jun-2016 Datasheet Rev. 1.0 www.dialog-semiconductor.com 1 of 18 2016 Dialog SemiconductoriW1816 Off-Line Digital Green-Mode PWM Controller Integrated with Power BJT and OTP L V OUT + + GND N U1 iW1816 1 C E 8 2 I 7 C SENSE V 6 SENSE GND 4 5 V CC Figure 3.1 : iW1816 Typical Application Circuit WARNING: The iW1816 is intended for high voltage AC/DC offline applications. Contact with live high voltage offline circuits or improper use of components may cause lethal or life threatening injuries or property damage. Only qualified professionals with safety training and proper precaution should operate with high voltage offline circuits. iW1816 Output Power Table at Universal Input (85V 264V ) AC AC 1 2 Condition Adapter Open Frame Output Power (W) 4.0 5.0 Notes: 1. Maximum practical continuous output power measured at enclosure internal ambient temperature of 60C and device emitter pin (pin 8) temperature of 90C (adapter is placed in a non-ventilated environment). 2. Maximum practical continuous output power measured at open frame ambient temperature of 50C and device emitter pin (pin 8) temperature of 90C while minimum bulk capacitor voltage is kept above 90V and no special heatsinking is used (test unit is placed in a non-ventilated environment). 3. The output power can vary depending on the power supply system designs and operating conditions. See Section 10.14 for more details. 30-Jun-2016 Datasheet Rev. 1.0 www.dialog-semiconductor.com 2 of 18 2016 Dialog Semiconductor