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 • Resistor Programmed, 2MHz Capable Oscillator • Patent Pending Oscillator Synchronization • Programmable Line Under-Voltage Lockout • Line Over-Voltage Protection • Internal Thermal Shutdown Protection • Adjustable Soft-Start • Versatile Dual Mode Over-Current Protection with Hiccup Delay Timer • Cycle-by-Cycle Over-Current Protection • Direct Opto-coupler Interface • 5V Reference Output Description The LM5035A 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 LM5035A is a functional variant of the LM5035 half-bridge PWM controller. The VCC current limit threshold has been increased to 35 mA. The soft start and soft start currents have been increased from 50 µA to 100 µA. The BST UV threshold has been lowered to less than the VCC UV threshold. The ratio of the T1 and T2 delays on the SR1 and SR2 outputs has been increased from 2:1 to 3:1. 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) and overvoltage protection (OVP). 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 and a programmable timer provide cycle-by-cycle current limit and adjustable hiccup mode overload protection.

Also Recommended LM5030▲ 100V Push-Pull Current Mode PWM Controller LM5033▲ 100V Push-Pull Voltage Mode PWM Controller LM5100A 3.0A High Voltage High Side And Low Side Driver MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

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

Datasheet

Title		Size	Date	Other Language
	LM5035A PWM Controller with Integrated Half-Bridge and SyncFET Drivers	522 Kbytes	2-Dec-08

Featured Application Notes

Title		Size	Date	Other Language
	AN-1755: Application Note 1755 LM5035A Evaluation Board	317 Kbytes	15-Jan-08

More Application Notes

Title		Size	Date	Other Language
	AN-1435: Application Note 1435 LM5035 Evaluation Board	769 Kbytes	31-Jan-06

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5035AMH	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5035AMHX	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5035ASQ	ABCD150XV2	0	3601	0	0	1155496	4	327875145
LM5035ASQX	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.

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