LM5180-Q1 Series

Automotive 65-VIN no-opto flyback converter with 100-V, 1.5-A integrated MOSFET

Catalog

Automotive 65-VIN no-opto flyback converter with 100-V, 1.5-A integrated MOSFET

Part	Board Type	Outputs and Type	Outputs and Type	Main Purpose	Voltage - Input [Max]	Voltage - Input [Min]	Supplied Contents	Current - Output	Frequency - Switching	Regulator Topology	Voltage - Output	Utilized IC / Part	Mounting Type	Voltage - Input (Min) [Min]	Function	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Max) [Max]	Output Configuration	Output Type	Number of Outputs	Frequency - Switching [Min]	Frequency - Switching [Max]	Package / Case	Topology	Qualification	Grade
Texas Instruments LM5180EVM-S05	Fully Populated	Isolated	1	DC/DC Converter	65 V	10 V	Board(s)	1 A	350 kHz	Flyback	5 V	LM5180-Q1
Texas Instruments LM5180NGUR													Surface Mount Wettable Flank	4.5 V	Step-Up/Step-Down	8-WSON (4x4)	150 °C	-40 °C	65 V	Positive and Negative	Adjustable	1	10 kHz	350 kHz	8-WDFN Exposed Pad	Flyback
Texas Instruments LM5180QNGURQ1													Surface Mount	4.5 V	Step-Up/Step-Down	8-WSON (4x4)	150 °C	-40 °C	65 V	Positive and Negative	Adjustable	1	12 kHz	350 kHz	8-WDFN Exposed Pad	Flyback	AEC-Q100	Automotive
Texas Instruments LM5180QNGUTQ1													Surface Mount Wettable Flank	4.5 V	Step-Up/Step-Down	8-WSON (4x4)	150 °C	-40 °C	65 V	Positive and Negative	Adjustable	1	12 kHz	350 kHz	8-WDFN Exposed Pad	Flyback	AEC-Q100	Automotive
Texas Instruments LM5180EVM-DUAL	Fully Populated	Isolated	2	DC/DC Positive and Negative	65 V	10 V	Board(s)	200 mA		Flyback	-7.7 V 15 VDC	LM5180-Q1

Catalog

Automotive 65-VIN no-opto flyback converter with 100-V, 1.5-A integrated MOSFET

Key Features

• AEC-Q100-qualified for automotive applicationsDevice temperature grade 1: –40°C to 125°C ambient temperature rangeDesigned for reliable and rugged applicationsWide input voltage range of 4.5 V to 65 VRobust solution with only one component crossing the isolation barrier±1.5% total output regulation accuracyOptional VOUTtemperature compensation6-ms internal or programmable soft startInput UVLO and thermal shutdown protectionHiccup-mode overcurrent fault protection–40°C to +150°C junction temperature rangeIntegration reduces solution size and costIntegrated 100-V, 0.4-Ω power MOSFETNo opto-coupler or transformer auxiliary winding required for VOUTregulationLow EMI operation to meet CISPR 25High efficiency PSR flyback operationQuasi-resonant switching in boundary conduction mode (BCM) at heavy loadExternal bias option for improved efficiencySingle- and multi-output implementationsCreate a custom regulator design usingWEBENCH®Power DesignerAEC-Q100-qualified for automotive applicationsDevice temperature grade 1: –40°C to 125°C ambient temperature rangeDesigned for reliable and rugged applicationsWide input voltage range of 4.5 V to 65 VRobust solution with only one component crossing the isolation barrier±1.5% total output regulation accuracyOptional VOUTtemperature compensation6-ms internal or programmable soft startInput UVLO and thermal shutdown protectionHiccup-mode overcurrent fault protection–40°C to +150°C junction temperature rangeIntegration reduces solution size and costIntegrated 100-V, 0.4-Ω power MOSFETNo opto-coupler or transformer auxiliary winding required for VOUTregulationLow EMI operation to meet CISPR 25High efficiency PSR flyback operationQuasi-resonant switching in boundary conduction mode (BCM) at heavy loadExternal bias option for improved efficiencySingle- and multi-output implementationsCreate a custom regulator design usingWEBENCH®Power Designer

Description

The LM5180-Q1 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 65 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation. The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 100-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients. The LM5180-Q1 converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery. The LM5180-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks. The LM5180-Q1 is a primary-side regulated (PSR) flyback converter with high efficiency over a wide input voltage range of 4.5 V to 65 V. The isolated output voltage is sampled from the primary-side flyback voltage, eliminating the need for an optocoupler, voltage reference, or third winding from the transformer for output voltage regulation. The high level of integration results in a simple, reliable and high-density design with only one component crossing the isolation barrier. Boundary conduction mode (BCM) switching enables a compact magnetic solution and better than ±1.5% load and line regulation performance. An integrated 100-V power MOSFET provides output power up to 7 W with enhanced headroom for line transients. The LM5180-Q1 converter simplifies implementation of isolated DC/DC supplies with optional features to optimize performance for the target end equipment. The output voltage is set by one resistor, while an optional resistor improves output voltage accuracy by negating the thermal coefficient of the flyback diode voltage drop. Additional features include an internally-fixed or externally-programmable soft start, optional bias supply connection for higher efficiency, precision enable input with hysteresis for adjustable line UVLO, hiccup-mode overload protection, and thermal shutdown protection with automatic recovery. The LM5180-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 8-pin WSON package with 0.8-mm pin pitch and wettable flanks.