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Product Detailed Parameters
- Description：BI DIRECTIONAL 48V TO 12V CURREN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：1
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：3.5V ~ 42V
- Frequency - Switching：100kHz ~ 600kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：48-PowerTQFP
- Supplier Device Package：48-HTQFP (7x7)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM5170QPHPTQ1 is an automotive-grade multiphase bidirectional current controller designed for high-efficiency power conversion. It supports Buck, Boost, and Buck-Boost topologies with a wide input voltage range of 3 V to 85 V and output voltages from 100 mV to 100 V. The device operates at switching frequencies between 50 kHz and 500 kHz, delivering up to 50 A output current. It features a 48-pin HTQFP package, operates within -40°C to +150°C junction temperature, and includes 4 ns fall time and 5 ns rise time. It is AEC-Q100 qualified.
Feature Summary
- Multiphase bidirectional current control architecture supporting interleaved operation
- Integrated synchronous rectification with adaptive dead-time management
- Programmable frequency synchronization and phase interleaving capabilities
- Comprehensive protection including UVLO, OVP, OTP, and adjustable current limit
Applications
- Automotive 12V/24V/48V bus power distribution systems
- Battery charge/discharge management in electric vehicles
- Bidirectional DC-DC converters for energy storage applications
- Industrial power supplies requiring wide input voltage ranges
Procurement Notes
Verify the specific suffix QPHPTQ1 matches the required automotive qualification and package type. Confirm that the HTQFP-48 footprint aligns with your PCB design constraints. Ensure compatibility with the intended switching frequency and current requirements before ordering. Check for any recent lifecycle notices or PCN updates regarding this specific part number.
Selection Notes
Select this component when designing bidirectional power stages requiring precise current control across multiple phases. It is suitable for applications needing wide VIN/VOUT flexibility and high thermal performance. Consider the 48-pin HTQFP package size and the need for external MOSFETs. Evaluate if the 50 A capability and 500 kHz max frequency meet system efficiency targets.
Part Context
This part belongs to the LM5170 family of multiphase controllers from Texas Instruments. It is specifically the automotive-qualified version (indicated by 'Q') in the HTQPT package variant. It shares core functionality with non-automotive counterparts but meets stricter reliability standards for automotive environments.
Replacement Considerations
LM5170QPHPRQ1 is a similar automotive-qualified part in the same family. Verify pinout and package compatibility before substitution. Non-automotive versions like LM5170PHPT lack AEC-Q100 certification.
