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UC2849

Category:ACDC- and -DCDC-power supply
Product Name:Secondary-side average current mode controller
Manufacturers:TI
Production Batch Number:10+
Encapsulation:24PDIP, 24SOIC
Stock Status:There is stock
Stock Quantity:4480
Minimum order quantity: 1
Details:

Product introduction

The average current mode controller UC3849 accurately completes the home average current mode control on the secondary side. The secondary-side output voltage is regulated by sensing the output voltage and differentially sensing the AC switch current. The detected output voltage drives a voltage error amplifier. The AC switching current, monitored by a current sense resistor, drives a high bandwidth, low offset current sense amplifier. The output of the error amplifier's voltage and current sense amplifiers drives a high bandwidth difference, incorporating existing error amplifiers. The output sawtooth waveform in the current error amplifier is amplified and reversed by the inductor current through the resistor sensing. This inductor current drop slope compared to PWM ramp compensation is achieved, which gives an accurate and inherently fast transient response to load changes.

characteristic

Utility secondary side control of the isolated power supply
1 MHz operation
AC switch current sense differential
Precisely programmable maximum duty cycle
Multiple chips can be synchronized to the fastest oscillator
Wide gain-bandwidth product (70 MHz, access control list "10") current error and current sense amplifier
到十设备可以轻松地分享共同负载

parameter

	UC2849
Duty cycle (max.) (%)	85
Frequency (max) (khertz)	1000
Pins/Packets	24PDIP，24SOIC
(#) Regulated output	One
Operating temperature range(°C)	-40 to 85

andUC2849Related ICs are:

Model	Manufacturers	lot number	encapsulation	illustrate
1728490000	Weidmüller Interface GmbH & Co. KG	218+	connector	1728490000 S2L 3.5/10/90F 3.5SN OR
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TPS2849	TI	09+	14HTSSOP	Fast synchronous step-down MOSFET driver with 8V drive regulator

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TI brand product recommendation

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