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Description
Power Factor Correction and PWM Controller Combo
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GENERAL DESCRIPTION
The ML4824 is a controller for power factor corrected, switched mode power supplies. Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully complies with IEC1000-2-3 specification. The ML4824 includes circuits for the implementation of a leading edge, average current, “boost” type power factor correction and a trailing edge, pulse width modulator (PWM).
The device is available in two versions; the ML4824-1 (fPWM = fPFC) and the ML4824-2 (fPWM = 2 x fPFC).
Doubling the switching frequency of the PWM allows the user to design with smaller output components while maintaining the best operating frequency for the PFC. An over-voltage comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting and input voltage brownout protection. The PWM section can be operated in current or voltage mode at up to 250kHz and includes a duty cycle limit to prevent transformer saturation.
FEATURES
● Internally synchronized PFC and PWM in one IC
● Low total harmonic distortion
● Reduces ripple current in the storage capacitor between the PFC and PWM sections
● Average current, continuous boost leading edge PFC
● Fast transconductance error amp for voltage loop
● High efficiency trailing edge PWM can be configured for current mode or voltage mode operation
● Average line voltage compensation with brownout control
● PFC overvoltage comparator eliminates output “runaway” due to load removal
● Current fed gain modulator for improved noise immunity
● Overvoltage protection, UVLO, and soft start
Preview of the first 3 pages of the data sheet
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222 buyer reviews from India
Christopher Wilson
Length of registration:7 years
The testing result for the Intergrated Circuits ML4824IS1 ordered from Utsource website was satisfactory. The device was tested for its functionality, power consumption, and overall performance. The results showed that the device was able to operate within its specified range and had a low power consumption. The overall performance of the device was also satisfactory and met the expected standards
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0
Reply0
03/17/2023
Roland
Length of registration:3 years
Product good, as described.
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12/01/2022
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Warranty
All UTSOURCE purchases have a 60 days money back return policy, plus a 90 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
ML4824IS1
ML4824IS1 has several brands around the world that may have alternate names for ML4824IS1 due to regional differences or acquisition. ML4824IS1 may also be known as the following names:
BUYING OPTIONS
Stock Status: 10000
Minimum: 2
Total Price:
Unit Price:2.09550
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