Features • High voltage (100V) start-up regulator • Alternating outputs for double-ended topologies • Current-mode or feed-forward voltage-mode control • Programmable maximum duty cycle lLimit • 2% feedback reference accuracy • High gain-bandwidth error amplifier • Programmable line under-voltage lockout (UVLO) with adjustable hysteresis • Versatile dual mode over-current protection with hiccup delay timer • Programmable soft-start • Precision 5V reference output • Current sense leading edge blanking • Resistor programmed 2 MHz capable oscillator • Oscillator synchronization capability with low frequency lockout protection Description The LM5037 PWM controller contains all the features necessary to implement balanced double-ended power converter topologies, such as push-pull, half-bridge and full-bridge. These double-ended topologies allow for higher efficiencies and greater power densities compared to common single-ended topologies such as the flyback and forward. The LM5037 can be configured for either voltage mode or current mode control with minimum external components. Two alternating gate drive outputs are provided, each capable of 1.2A peak output current. The LM5037 can be configured to operate directly from the input voltage rail over a wide range of 13V to 100V. Additional features include programmable maximum duty cycle limit, line under-voltage lockout, cycle-by-cycle current limit and a hiccup mode fault protection with adjustable timeout delay, soft-start and a 2 MHz capable oscillator with synchronization capability, precision reference and thermal shutdown.

Also Recommended LM25037▲ Lower Voltage Version LM5030▲ 100V Push-Pull Current Mode Controller LM5035▲ PWM Controller With Integrated Half-Bridge And SynFET Drivers LM5102 100V High Voltage Half-Bridge Gate Driver MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

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

Datasheet

Title		Size	Date	Other Language
	LM5037 Dual-Mode PWM Controller With Alternating Outputs	467 Kbytes	12-Dec-08

Featured Application Notes

Title		Size	Date	Other Language
	AN-1904: Application Note 1904 LM5037 Evaluation Board	294 Kbytes	5-Jan-09

More Application Notes

Title		Size	Date	Other Language
	AN-1331: Application Note 1331 LM5033 Evaluation Board	507 Kbytes	27-May-04
	AN-1435: Application Note 1435 LM5035 Evaluation Board	769 Kbytes	31-Jan-06
	AN-1305: Application Note 1305 LM5030 Evaluation Board	364 Kbytes	4-Feb-04
	AN-1962: Application Note 1962 LM5032 Interleaved Boost Evaluation Board	2506 Kbytes	27-Aug-09

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5037MT	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5037MTX	ABCD150XV1	0	3868	0	0	2595000	2	736338335

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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