CR1510-06

No-load power consumption <50mW at 230VAC with typical application circuit. Supports universal input voltage range (90VAC to 277VAC). Isolated design without opto-coupler. Internal 750V power bipolar junction transistor (BJT). Adapter application - tight constant voltage regulation. LED SSL application - tight current regulation across line and load, and within primary inductance tolerance (±20%). Supports wide range of capacitive loads (from 33μF to 2000μF or higher). EZ-EMI design enhances manufacturability. Intrinsically low common mode noise. Adaptively controlled soft start-up enables fast and smooth LED current at start-up. Optimized 64kHz maximum PWM switching frequency achieves best size and efficiency. Quasi-resonant operation for highest overall efficiency. Dynamic base current control to drive internal BJT. No external compensation components required. Built-in short circuit protection and output overvoltage protection. No audible noise over entire operating range. The CR1510 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 CR1510 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 built-in power limit function enables optimized transformer design in universal off-line applications and allows for a wide input voltage range. iWatt's innovative proprietary technology ensures that power supplies built with the CR1510 can achieve high average efficiency, low standby power consumption, and fast smooth startup with a wide range of output voltage, that are ideal for LED lighting applications.

Applications

• Solid-state LED lighting
• LED lighting ballast
• Compact low-power AC/DC adapters/chargers for cellphones, PDAs, and digital still cameras
• Linear AC/DC replacement

Key features

• No-load power consumption <50mW at 230VAC with typical application circuit
• Supports universal input voltage range (90VAC to 277VAC)
• Isolated design without opto-coupler
• Internal 750V power bipolar junction transistor (BJT)
• Adapter application - tight constant voltage regulation
• LED SSL application - tight current regulation across line and load, and within primary inductance tolerance (±20%)
• Supports wide range of capacitive loads (from 33μF to 2000μF or higher)
• EZ-EMI design enhances manufacturability
• Intrinsically low common mode noise
• Adaptively controlled soft start-up enables fast and smooth LED current at start-up
• Optimized 64kHz maximum PWM switching frequency achieves best size and efficiency
• Quasi-resonant operation for highest overall efficiency
• Dynamic base current control to drive internal BJT
• No external compensation components required
• Built-in short circuit protection and output overvoltage protection
• No audible noise over entire operating range