Features • Dual Integrated 75V N-Channel MOSFETs • Ultra-wide input voltage range: 4.25V to 75V • Integrated high voltage bias regulator • Adjustable output voltage • 1.5% feedback reference accuracy • Current mode control with selectable compensation • Wide bandwidth error amplifier • Integrated current sensing and limiting • 50% maximum duty cycle limit • Single resistor oscillator programming • Oscillator synchronization capability • Programmable soft-start • Enable / Under-voltage Lockout (UVLO) pin • Thermal shutdown Description The LM5015 high voltage switch mode regulator features all the functions necessary to implement efficient high voltage Two-Switch Forward and Two-Switch Flyback regulators, using a minimum of external components. This easy to use regulator integrates high side and low side 75 Volt N-Channel MOSFETs with a minimum 1 Amp peak current limit. The voltage across the MOSFETs employed in the two-switch topology is clamped to the input voltage, allowing the input voltage range to approach the rating of the MOSFETs. The regulator control method is based on current mode control providing inherent ease of loop compensation and line feed-forward for superior rejection of input transients. The operating frequency is set with a single resistor and is programmable up to 750 kHz. The oscillator can also be synchronized to an external clock. Additional protection features include cycle-by-cycle current limiting, thermal shutdown, under-voltage lockout and remote shutdown capability. The device is available in the TSSOP-14EP package featuring an exposed die attach pad to enhance thermal dissipation.

LM5015   9.00 <= V in Lower  V   <= V in Upper  V   <= 72.00 V out 3.30 <=  V <= 15.00 I out    A <= 2.50 Ambient Temperature  °C <= 100 What are WEBENCH® tools? Also Recommended LM5001▲ High Voltage Single-Switch Regulator MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image	Connection Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LM5015 High Voltage Monolithic Two-Switch Forward DC-DC Regulator	390 Kbytes	15-Jan-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-1724: Application Note 1724 LM5015 Isolated Two-Switch DC-DC Regulator Evaluation Board	167 Kbytes	29-Oct-07
	AN-1725: Application Note 1725 LM5015 Non-Isolated Two-Switch DC-DC Regulator Evaluation Board	161 Kbytes	29-Oct-07

More Application Notes

Title		Size	Date	Other Language
	AN-1352: Application Note 1352 LM5010 Evaluation Board	591 Kbytes	2-Dec-04

Design Tools

Title	Size	Date
LM5015 Isolated Quickstart Design Spreadsheet	154 Kbytes	7-Jan-2009
LM5015 Non Isolated Quickstart Design Spreadsheet	381 Kbytes	7-Jan-2009
"Article - Two-Switch Topology Boosts Forward, Flyback Designs"

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM5015MH	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5015MHE	ABCD150XV1	0	3868	0	0	2595000	2	736338335
LM5015MHX	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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