LM5170-Q1 Series

Multiphase bidirectional current controller, AEC-Q100 qualified

Catalog

Multiphase bidirectional current controller, AEC-Q100 qualified

Part	Function	Control Features	Output Configuration	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Output Type	Package / Case	Output Phases	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Number of Outputs	Mounting Type	Frequency - Switching [Max]	Frequency - Switching [Min]	Grade	Qualification	Outputs and Type	Outputs and Type	Voltage - Input [Max]	Voltage - Input [Min]	Main Purpose	Voltage - Output	Frequency - Switching	Current - Output	Regulator Topology	Board Type	Supplied Contents	Utilized IC / Part
Texas Instruments LM5170PHPT	Step-Up/Step-Down	Enable Frequency Control Power Good Soft Start	Positive	Buck-Boost	-40 °C	125 ¯C	Transistor Driver	48-PowerTQFP	2	48-HTQFP (7x7)	6 V	85 V	1	Surface Mount	500 kHz	50 kHz
Texas Instruments LM5170PHPR	Step-Up/Step-Down	Enable Frequency Control Power Good Soft Start	Positive	Buck-Boost	-40 °C	125 ¯C	Transistor Driver	48-PowerTQFP	2	48-HTQFP (7x7)	6 V	85 V	1	Surface Mount	500 kHz	50 kHz
Texas Instruments LM5170QPHPRQ1	Step-Up/Step-Down	Enable Frequency Control Power Good Soft Start	Positive	Buck-Boost	-40 °C	150 °C	Transistor Driver	48-PowerTQFP	2	48-HTQFP (7x7)	3.5 V	42 V	1	Surface Mount	600 kHz	100 kHz	Automotive	AEC-Q100
Texas Instruments LM5170QPHPTQ1	Step-Up/Step-Down	Enable Frequency Control Power Good Soft Start	Positive	Buck-Boost	-40 °C	150 °C	Transistor Driver	48-PowerTQFP	2	48-HTQFP (7x7)	3.5 V	42 V	1	Surface Mount	600 kHz	100 kHz	Automotive	AEC-Q100
Texas Instruments LM5170EVM-BIDIR																			2	Non-Isolated	48 V 70 V	3 V 6 V	Bidirectional DC/DC	12 V 48 V	100 kHz	60 A	Boost Buck	Fully Populated	Board(s)	LM5170-Q1

Catalog

Multiphase bidirectional current controller, AEC-Q100 qualified

Key Features

• AEC-Q100 qualified for automotive applications:Device temperature grade 1: –40°C to +125°C ambient operating rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-CapableDocumentation available to aid functional safety system design100-V HV-port and 65-V LV-port max ratings1% Accurate bidirectional current regulation1% Accurate channel current monitoring5-A Peak half-bridge gate driversProgrammable or adaptive dead-time controlProgrammable oscillator frequency with optional synchronization to external clockIndependent channel enable control inputsAnalog and digital channel current control inputsProgrammable cycle-by-cycle peak current limitHV and LV port overvoltage protectionDiode emulation prevents negative currentProgrammable soft-start timerMOSFET failure detect at start-up and circuit breaker controlMultiphase operation phase adding or droppingAEC-Q100 qualified for automotive applications:Device temperature grade 1: –40°C to +125°C ambient operating rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-CapableDocumentation available to aid functional safety system design100-V HV-port and 65-V LV-port max ratings1% Accurate bidirectional current regulation1% Accurate channel current monitoring5-A Peak half-bridge gate driversProgrammable or adaptive dead-time controlProgrammable oscillator frequency with optional synchronization to external clockIndependent channel enable control inputsAnalog and digital channel current control inputsProgrammable cycle-by-cycle peak current limitHV and LV port overvoltage protectionDiode emulation prevents negative currentProgrammable soft-start timerMOSFET failure detect at start-up and circuit breaker controlMultiphase operation phase adding or dropping

Description

The LM5170-Q1 controller provides the essential high voltage and precision elements of a dual-channel bidirectional converter for automotive 48-V and 12-V dual battery systems. It regulates the average current flowing between the high voltage and low voltage ports in the direction designated by the DIR input signal. The current regulation level is programmed through analog or digital PWM inputs. Dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical current accuracy of 1%. Robust 5-A half-bridge gate drivers are capable of driving parallel MOSFET switches delivering 500 W or more per channel. The diode emulation mode of the synchronous rectifiers prevents negative currents but also enables discontinuous mode operation for improved efficiency with light loads. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, MOSFET failure detection and overtemperature protection. The LM5170-Q1 controller provides the essential high voltage and precision elements of a dual-channel bidirectional converter for automotive 48-V and 12-V dual battery systems. It regulates the average current flowing between the high voltage and low voltage ports in the direction designated by the DIR input signal. The current regulation level is programmed through analog or digital PWM inputs. Dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical current accuracy of 1%. Robust 5-A half-bridge gate drivers are capable of driving parallel MOSFET switches delivering 500 W or more per channel. The diode emulation mode of the synchronous rectifiers prevents negative currents but also enables discontinuous mode operation for improved efficiency with light loads. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, MOSFET failure detection and overtemperature protection.