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LM5039 数据表(PDF) 1 Page - Texas Instruments

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部件名 LM5039
功能描述  Half-Bridge PWM Controller with Average Current Limit
Download  33 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

LM5039 数据表(HTML) 1 Page - Texas Instruments

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LM5039
www.ti.com
SNVS621D – FEBRUARY 2010 – REVISED MARCH 2013
LM5039 Half-Bridge PWM Controller with Average Current Limit
Check for Samples: LM5039
1
FEATURES
DESCRIPTION
The
LM5039
Half-Bridge
Controller/Gate
Driver
2
105V / 2A Half-Bridge Gate Drivers
contains all of the features necessary to implement
Synchronous Rectifier Control Outputs with
half-bridge topology power converters using voltage
Programmable Delays
mode control with line voltage feed-forward. The
High Voltage (105V) Start-up Regulator
LM5039 is a functional variant of the LM5035B half-
bridge PWM controller, featuring average current limit
Voltage-mode Control with Line Feed-Forward
during an overload event to balance the center-point
and Volt • Second Limiting
of the half-bridge capacitor divider. The floating high-
Programmable Average Current Limit
side gate driver is capable of operating with supply
Balances the Half-Bridge Capacitor Divider
voltages up to 105V. Both the high-side and low-side
Voltage in an Overload Condition
gate drivers are capable of 2A peak. An internal high
voltage startup regulator is included, along with
Programmable Hiccup Mode Timer Reduces
programmable line undervoltage lockout (UVLO). The
Power Dissipation During a Continuous
oscillator is programmed with a single resistor to
Overload Event
frequencies up to 2MHz. The oscillator can also be
Adjustable Peak Cycle-by-Cycle Over Current
synchronized to an external clock. A current sense
Protection
input provides peak cycle-by-cycle and average
current limit. Other features include adjustable hiccup
Resistor Programmed, 2MHz Capable
mode
overload
protection,
soft-start,
revision
Oscillator
reference, and thermal shutdown.
Patented Oscillator Synchronization
Programmable Line Under-Voltage Lockout
Internal Thermal Shutdown Protection
Adjustable Soft-Start
Direct Opto-Coupler Interface
5V Reference Output
PACKAGES
HTSSOP-20 (Thermally enhanced)
WQFN-24 (4mm x 5mm)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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