Reference Design Kits - RDK-83 and RDK-131

The RDK-83 circuit enables the highest surge protection for cordless/wireline phone designs The RDK-131 LED reference design kit to retrofit a halogen bulb using the linkSwitch®-TN product family

596-1128-ND RDK-83   1.6W Cordless Phone Adapter (Power Supply) with 10 kV surge withstand   Power Integrations (PI) reference design kit, RDK-83, contains a jump-start power supply design featuring PI's LinkSwitch-LP® family of ICs and is ideal for replacing existing AC line, transformer-based designs, such as Cordless Phone Adapters. With the RDK-83 as a guide, designers can quickly create switched mode power supplies for applications with existing AC line transformers that require 10 kV of common-mode surge withstand capability.     Engineering Report     LinkSwitch®-LP Info  Contents • An operational, 1.6 W, Universal input, AC-DC Power supply with a 7.7V, 210mA output   • LinkSwitch-LP product samples and an extra, unpopulated PCB   • PI Expert™power supply design software   • Engineering Report, Data sheet and other Documentation  LinkSwitch-LP Features   • Lowest component count switcher   • Very tight parameter tolerances using proprietary IC trimming technology and transformer construction techniques enable Clampless™ designs–decreases component count/system cost and increases efficiency   • Meets industry standard requirements for thermal overload protection– eliminates the thermal fuse used in linear transformers or additional temperature sensing components in RCC designs   • Frequency jittering greatly reduces EMI and enables low-cost input filter configurations   • Meets HV creepage requirements between DRAIN and all other pins, both on the PCB and at the IC package   • Propriety E-Shield™ transformer technology can eliminate Y-type capacitors    Power Supply Features   • Power Output–1.6 W   • Input Voltage–85-265 VAC   • Output–7.7 V @ 210 mA   • Topology–Flyback    Superior Performance over Linear and RCC   • Hysteretic thermal shutdown protection–automatic recovery improves field reliability   • Universal input range allows worldwide operation   • Auto-restart reduces delivered power by >85% during short circuit and open loop fault conditions   • Simple ON/OFF control, no loop compensation needed   • High bandwidth provides fast turn on with no overshoot and excellent transient load response    EcoSmart®– Energy Efficiency Technology   • Easily meets all global energy efficiency regulations with no added components   • No-load consumption <150mW at 265VAC input   • ON/OFF control provides constant efficiency to very light loads–ideal for mandatory CEC regulations

596-1127-ND RDK-131   LED Reference Design Kit to Retrofit a Halogen Bulb   RDK-131 is a reference design kit (RDK) for ultra-small power supplies that helps designers deliver energy-efficient LED alternatives to power-hungry incandescent light bulbs. The kit helps designers produce EMC compliant power conversion circuits that fit inside light bulb sockets. Unlike incandescent lamps, which can be powered directly from the AC mains, each LED light source requires a power supply to be incorporated within the bulb socket or a separate ballast enclosure. RDK-131 significantly simplifies the task of designing LED lamp drive circuits while reducing the time required for bringing new products to market.       Engineering Report       LED drivers / Applications  Contents • An operational 3W Non Isolated Power Supply   • Unpopulated PCB   • LinkSwitch-TN samples   • PI's PI Expert™ Power Supply Design Software   • Engineering Report, Data sheet and other Documentation  Features/Benefits • Utilizes the LinkSwitch-TN family of non-isolated, offline power conversion ICs in the SO-8 package • Enables the design of the ultra-small power supplies for LEDs that are retrofitted into existing, standard light bulbs • PSU boards fit within the lamp socket base • PSU boards comply with current EMC standards  RDK-131 Power Supply • 3W Non Isolated Offline Power Supply • Universal Input 85-265VAC • 12VDC/300mA constant current output, able to drive 3-1W High Brightness LEDs