LT8228 Series

Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection

Catalog

Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection

Part	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Package / Case	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Supplier Device Package	Output Configuration	Output Phases	Number of Outputs	Frequency - Switching [Min]	Frequency - Switching [Max]	Topology	Function	Output Type	Regulator Topology	Supplied Contents	Main Purpose	Current - Output	Board Type	Utilized IC / Part	Voltage - Output	Outputs and Type	Outputs and Type	Voltage - Input [Min]	Voltage - Input [Max]
Analog Devices LT8228IFE#PBF	-40 °C	125 ¯C	Surface Mount	38-TFSOP	100 V	6 V	38-TSSOP-EP	Positive	2	1	80 kHz	600 kHz	Buck-Boost	Step-Up/Step-Down	Transistor Driver
Analog Devices LT8228EFE#PBF	-40 °C	125 ¯C	Surface Mount	38-TFSOP	100 V	6 V	38-TSSOP-EP	Positive	2	1	80 kHz	600 kHz	Buck-Boost	Step-Up/Step-Down	Transistor Driver
Analog Devices DC2351A																Buck-Boost	Board(s)	Bidirectional DC/DC	7 A 35 A	Fully Populated	LT8228	12 V 48 V	2	Non-Isolated	8 V 36 V	14 V 56 VDC
Analog Devices LT8228HFE#PBF	-40 °C	150 °C	Surface Mount	38-TFSOP	100 V	6 V	38-TSSOP-EP	Positive	2	1	80 kHz	600 kHz	Buck-Boost	Step-Up/Step-Down	Transistor Driver

Catalog

Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection

Key Features

• Bidirectional Voltage or Current Regulation

• Bidirectional Reverse Current Protection

• Input and Output Negative Voltage Protection to –40V

• Bidirectional Inrush Current Limit and Boost Output Short Protection

• Switching MOSFET Short Detection and Protection

• 10V Gate Drive

• Wide Input and Output Voltage Range Up to 100V

• Feedback Voltage Tolerance: ±1.0% Over Temperature

• Bidirectional Programmable Current Regulation and Monitoring

• Extensive Self-Test, Diagnostics and Fault Reporting

• Programmable Fixed or Synchronizable Switching Frequency: 80kHz to 600kHz

• Programmable Soft-Start and Dynamic Current Limit

• Masterless, Fault Tolerant Current Sharing

Description

The LT8228 is a 100V bidirectional constant-current or constant-voltage synchronous buck or boost controller with independent compensation network. The direction of the power flow is automatically determined by the LT8228 or externally controlled. The input and output protection MOSFETs protect against negative voltages, control inrush currents and provide isolation between terminals under fault conditions such as switching MOSFET shorts. In buck mode, the protection MOSFETs at the V1terminal prevents reverse current. In boost mode, the same MOSFETs regulate the output inrush current and protects itself with an adjustable timer circuit breaker.The LT8228 offers bidirectional input and output current limit as well as independent current monitoring. Masterless, fault tolerant current sharing allows any LT8228 in parallel to be added or subtracted while maintaining current sharing accuracy. Internal and external fault diagnostics and reporting are available via theFAULTandREPORTpins. The LT8228 is available in a 38-lead TSSOP package.ApplicationsDual Battery Automotive and Industrial SystemsHigh Power System Backup and Supply Stabilization"N+1" Redundant, High Reliability Power SuppliesPower Interrupt Protection System