G5138PA Datasheet | Global Semiconductor

G5138P Series Digital Green-Mode Quasi-Resonant Primary-Side PWM Power Switch 1.0 General Description The G5138P 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 ponent count, simplifying EMI design and lowering the total bill of material cost. The -K version can operate at peak power mode with momentary peak power higher than the maximum continuous output power without design cost and size increase.The G5138P removes the need for secondary feedback circuit while achieving excellent line and load regulation. It also eliminates the need for loop pensation ponents 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 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. Global Semi’s innovative proprietary technology ensures that power supplies built with the G5138P can achieve both highest average active efficiency and have fast dynamic load response in a pact form factor in typical applications. DIGITAL PWM IC Features - No-load power consumption < 75 m W at 230 VAC along with fast dynamic load response - Tight constant-voltage and constant-current regulation across line and load range - Peak power mode provides momentary peak power higher than the maximum continuous output power without design cost and size increase（-K version） - Primary-side feedback eliminates optoisolators and simplifies design - Proprietary optimized 90 k Hz maximum PWM switching frequency with quasi-resonant operation achieves best size,...