[384] SG6848 / CR6848 / OB2262 / OB2263 CURRENT MODE SMPS CONTROLLER EQUIVALENT EXPLAINED

in this video i explained SG6848 / CR6848 / OB2262 / OB2263 CURRENT MODE SMPS CONTROLLER EQUIVALENT EXPLAINED
all green mode current mode smps controllers are
Green-Mode PWM
Low Start-up Current (5uA) & Low Operating Current (2mA)
􀂄 Leading-Edge Blanking
􀂄 Constant Output Power Limit
􀂄 Universal Input 90-265 vac at 47-60 Hz
􀂄 Built-in Synchronized Slope Compensation
􀂄 Current Mode Operation
􀂄 Cycle-by-cycle Current Limiting
􀂄 Under Voltage Lockout (UVLO)
􀂄 Programmable PWM Frequency
􀂄 Gate Output Voltage Clamped at 15V
􀂄 Few External Components Required
􀂄 Small SOT-26 Package
these PWM controllers provide several special enhancements designed to meet the low standby-power needs of low-power SMPS. To minimize power consumption in standby operation, the green-mode function or frequency drop function provides off-time modulation to linearly decrease the switching frequency under light-load conditions. This green-mode function enables the power supply to save power in no load or minor load conditions.
these ics have very low start-up current to 5uA, and the operating current to 2mA. To further improve power conservation, a large start-up resistance can be used. Built-in synchronized slope compensation ensures the stability of peak current mode control. Proprietary internal compensation provides a constant output power limit over a universal AC input range (90VAC to 264VAC). Pulse-by-pulse current
limiting ensures safe operation even during short-circuits. To protect the external power MOSFET from being damaged by supply over voltage, the SG6848’s output driver is clamped at 15V. SG6848 controllers can be used
to improve the performance and reduce the production cost of power supplies. The SG6848 is the best choice for replacing linear and RCC-mode power adapters. It is available in 8-pin DIP and 6-pin SOT-26 packages.
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