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LM5039 数据表(PDF) 1 Page - Texas Instruments |
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LM5039 数据表(HTML) 1 Page - Texas Instruments |
1 / 33 page 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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