Features 105V / 2A Half-Bridge Gate Drivers Synchronous Rectifier Control Outputs with Programmable Delays High Voltage (105V) Start-up Regulator Voltage-mode Control with Line Feed-Forward and Volt • Second Limiting Programmable average current limit balances the half-bridge capacitor divider voltage in an overload condition Programmable hiccup mode timer reduces power dissipation during a continuous overload event Adjustable peak cycle-by-cycle over current protection Resistor Programmed, 2MHz Capable Oscillator Patented Oscillator Synchronization Programmable Line Under-Voltage Lockout Internal Thermal Shutdown Protection Adjustable Soft-Start Direct Opto-coupler Interface 5V Reference Output Description The LM5039 Half-Bridge Controller/Gate Driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. The LM5039 is a functional variant of the LM5035B half-bridge PWM controller, featuring average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The floating high-side gate driver is capable of operating with supply voltages up to 105V. Both the high-side and low-side gate drivers are capable of 2A peak. An internal high voltage startup regulator is included, along with programmable line undervoltage lockout (UVLO). The oscillator is programmed with a single resistor to frequencies up to 2MHz. The oscillator can also be synchronized to an external clock. A current sense input provides peak cycle-by-cycle and average current limit. Other features include adjustable hiccup mode overload protection, soft-start, revision reference, and thermal shutdown.

Typical Application *click for larger image	Block Diagram *click for larger image

Parameters Values PWM Mode Voltage Mode Topology Half-Bridge, Push-Pull and Full-Bridge Input Min Voltage 8 Volt Input Max Voltage 105 Volt Frequency Max 1000 kHz Efficiency (peak) 92 % Adj Switch Frequency Yes Frequency Min 100 kHz Sync Pin Yes Sync Type Up UVLO Yes On/Off Pin No PowerGood / Error Flag No Current Limit Type Average, Cycle-by-cycle and Hiccup Gate Drive 2 Amp Special Features Average Current Limit, Hiccup Mode Current Limit, SR Control Capability, Direct Opto Interface and Feed-Forward Voltage-Mode Temperature Min -40 deg C Temperature Max 125 deg C Step-Down Yes Step-Up Yes Flyback No Inverting Yes RegType Switching Controller Adjustable Output Yes Output Power 500 Watt Switching Frequency 400 kHz Multiple Output Capability Yes Automotive No Quiescent Current 4 mA PowerWise Yes

Datasheets

Title		Size	Date	Other Language
	LM5039 Half-Bridge PWM Controller with Advanced Current Limit	514 Kbytes	17-Feb-10

Application Notes

Title		Size	Date	Other Language
	AN-2025: Application Note 2025 LM5039 Evaluation Board	431 Kbytes	17-Feb-10

Other Technical Documents

Title		Type	Date
	Average Current Limit Balances Center Point of Half-Bridge Input Caps	Power Designer	2010-04-28

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM5039MH/NOPB RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty AVNET-EM Worldwide 219 DIGI-KEY Worldwide 141	$1.90 each at 1K+ pcs	rail of 73
LM5039MHX/NOPB RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.90 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM5039.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM5039 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM5039EVAL/NOPB	Evaluation Board for the LM5039	Full production Lead Free (RoHS)	Distributor Region Qty	$160.00 each	1
Description: The LM5039 evaluation board is designed to provide the design engineer with a fully functional power converter based on the half-bridge topology to evaluate the LM5039 controller. The LM5039 is a functional variant of the LM5035B controller, featuring an average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The evaluation board is provided in an industry standard quarter brick footprint. Contents: Assembled LM5039 Evaluation Board LM5039 Datasheet LM5039 AN-2025

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM5039MH/NOPB	73.061	TSSOP EXP PAD	20	1	260	Detail	N/A	N/A	NSUZXYTT LM5039 MH
LM5039MHX/NOPB	73.061	TSSOP EXP PAD	20	1	260	Detail	N/A	N/A	NSUZXYTT LM5039 MH

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM5039.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM5039 is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5039MH	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5039MHX	ABCD150XV2	0	3601	0	0	1155496	4	327875145

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM5039.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM5039 is located at RoHS Status.

Power Management Solutions for High Power Systems Click image to play video in new window LM5035C & LM5039 Controllers Enable Smarter, Higher Density Isolated Power Supplies Loading video...

Power Management Solutions for High Power Systems Date: 2010-02-19 Length: 1:05:45 LM5035C & LM5039 Controllers Enable Smarter, Higher Density Isolated Power Supplies Date: 2010-03-10 Length: 0:06:11