iW350-00B

iW350 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 1 Description The iW350 is a PWM signal generator that works with three different types of dimming inputs, 0-10V PWM dimming, 0-10V linear dimming or simple dimming using a single resistor to ground from the DIM pin. The iW350 auto detects the dimmer type connected. A PWM dimming type is directly used, while the 0-10V linear dimming and resistor dimming signals are converted into a 0%-100% PWM duty cycle that can then be used to provide a dimming signal to a primaryside LED driver such as the iW3636, removing the need for transformers or other driver circuitry. The output of the iW350 is optimized in such a way as to remove the impact of the non-linear delay typical of optocouplers. The iW350 offers a high level of flexibility by offering programmability for the maximum dimming voltage, minimum output duty cycle and the turn-off threshold voltage through external resistors. The output PWM frequency is also programmable from 100Hz to 5kHz through a single capacitor to ground. The input to the iW350 integrates the necessary current source to interface with both active and passive 0-10V dimmers without additional circuitry, while the output can drive an optocoupler to provide isolated dimming control from the secondary to the primary. 2 Features ● 15V to 60V operating voltage ● SOIC-8 package ● 3-in-1 dimmer interface ● External resistor configuration x Programmable max dimming voltage: 8.5V, 9V, 9.5V and 10V x 0-10V PWM dimming x 0-10V linear dimming x Programmable minimum duty cycle: 1%, 3%, 5% and 10% x Single resistor dimming ● Dimmer type - auto detect x Programmable turn-off threshold: 0.5V, 0.6V, 0.7V and 0.8V x PWM or DC input dimming signal ● Programmable PWM output frequency range: 100Hz5kHz ● 0% to 100% PWM output x 1% PWM duty cycle tolerance ● Integrated current source for driving 0-10V dimmer x Selectable frequency range via external capacitor ● Low power shutdown mode x Unique duty cycle drive to account for non-linear optocoupler delay ● Integrated optocoupler driver for isolated applications 3 Applications ● 0-10V LED dimming application ● 3-in-1 LED driver interface chip (0-10V linear, 0-10V PWM and R dimming) dimming LED driver application Product Summary www.renesas.com Rev. 0.7 Preliminary 1 of 6 08-Apr-2022 © 2022 Renesas Electronics iW350 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination L VOUT N RTN U2 iW350 U1 iW3636 ISENSE NTC/DIM2 GND VCC VIN 3.3V LDO OUTPUT 3-in-1 Dimming Control VSENSE DIM1 0-10V PWM VCC VIN DRV DIM SEL SD GND CF or 10V 0-10V Analog 0V or Resistive PWM Figure 3.1 : iW350 Typical Application Circuit Product Summary www.renesas.com Rev. 0.7 Preliminary 2 of 6 08-Apr-2022 © 2022 Renesas Electronics iW350 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 4 Pinout Description iW350 1 VIN SD 8 2 GND CF 7 3 VCC SEL 6 4 DRV DIM 5 Figure 4.1 : 8-Lead SOIC Package Pin Number Pin Name Type Pin Description 1 VIN Power Power supply up to 60V. 2 GND Ground Ground. 3 VCC Power 5V power supply for internal circuit, connect a 4.7uF capacitor to GND. 4 DRV Digital Output 5 DIM Analog Input/Output Dimming interface connection. 6 SEL Analog Input/Output Connect an external resistor to set max dimming voltage and turn-off threshold voltage. 7 CF Analog Input/Output Sets the PWM output frequency: 100Hz to 5kHz. 8 SD Analog Input/Output Shuts down the IC if voltage is over 0.5V, and programs the minimum duty cycle with a resistor to ground. Product Summary www.renesas.com PWM driver. Rev. 0.7 Preliminary 3 of 6 08-Apr-2022 © 2022 Renesas Electronics iW350 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 5 Absolute Maximum Ratings Absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. Parameter Symbol Value Units VIN to GND VIN -0.3 to 65 V VCC to GND (IC internal power supply) VCC -0.3 to 6.5 V DIM to GND VDIM -0.3 to 65 V -0.3 to 6.5 V ±2 kV DRV, CF, SD and SEL to GND ESD rating (HBM) Storage temperature range TSTRG 150 °C Maximum junction temperature TJMAX 150 °C Product Summary www.renesas.com Rev. 0.7 Preliminary 4 of 6 08-Apr-2022 © 2022 Renesas Electronics iW350 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination 6 Physical Dimensions Figure 6.1 : Physical Dimensions of 8-Pin SOIC Package 7 Ordering Information Part Number Options Package Description iW350-001 iW350-00B iW350-00AB Standard PWM Output; Dimming Curve Figure 9.1; Turn-off Function Disabled SOIC-8 Tape & Reel2 iW350-021 iW350-02B iW350-02AB Standard PWM Output; Dimming Curve Figure 9.2; Turn-off Function Disabled SOIC-8 Tape & Reel2 iW350-301 iW350-30B iW350-30AB Standard PWM Output; Dimming Curve Figure 9.3; Turn-off Function Enabled SOIC-8 Tape & Reel2 iW350-321 iW350-32B Standard PWM Output; Dimming Curve Figure 9.4; Turn-off Function Enabled SOIC-8 Tape & Reel2 Note 1. Not recommended for new designs, please use the -xxB version. Note 2. Tape and reel packing quantity is 2,500/reel. Minimum packing quantity is 2,500. Product Summary www.renesas.com Rev. 0.7 Preliminary 5 of 6 08-Apr-2022 © 2022 Renesas Electronics iW350 SSL Interface Controller for Analog (0-10V), PWM, and Resistor Dimming with Optocoupler Delay Elimination IMPORTANT NOTICE AND DISCLAIMER RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. 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(Rev.1.0 Mar 2020) Corporate Headquarters Contact Information TOYOSU FORESIA, 3-2-24 Toyosu Koto-ku, Tokyo 135-0061, Japan www.renesas.com For further information on a product, technology, the most up-to-date version of a document, or your nearest sales office, please visit: www.renesas.com/contact/ Trademarks Renesas and the Renesas logo are trademarks of Renesas Electronics Corporation. All trademarks and registered trademarks are the property of their respective owners. Product Summary www.renesas.com Rev. 0.7 Preliminary 6 of 6 08-Apr-2022 © 2022 Renesas Electronics