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Texas Instruments TPS61378-Q1 Synchronous Boost Converter

Texas Instruments TPS61378-Q1 Synchronous Boost Converter comes with a load disconnect function integrated. The input voltage covers from 2.3V to 14V, while the maximal output voltage up to 18.5V. The switching current limit is programmable from 1A to 4.8A. It consumes a 25uA quiescent current from V_IN.

The TPS61378-Q1 employs the peak current mode control with the switching frequency programmable from 200kHz to 2.2MHz. The device works in fixed-frequency PWM operation in medium to heavy load. There are two optional modes in light load by configuring the MODE pin: Auto PFM mode and Forced PWM to balance the efficiency and noise immunity in light load. The switching frequency can be synchronized to an external clock. The TPS61378-Q1 uses the spread spectrum of the internal clock for more EMI friendly at FPWM mode. Also, there is an internal soft-start time to limit the inrush current.

The Texas Instruments TPS61378-Q1 has various fixed output voltage versions to save the external feedback resistor. It supports the external loop compensation so that the stability and transient response could be optimized at a wider Vout/Vin range. It also integrates robust protection features that include output short protection, output over-voltage protection, and thermal shutdown protection. The TPS61378-Q1 is available in a 3mm x 3mm 16-pin QFN package with a wettable flank.

Features

AEC-Q100 qualified for automotive applications
- –40°C to 125°C T_A device temperature grade 1
Function Safety-Capable
- Documentation available to aid functional safety system design
Flexible input and output operation range
- 2.3V to 14V input voltage range
- 4.0V to 18.5V programmable output voltage range
- 5V, 5.25V, 5.5V fixed output options
- 1A to 4.8A programmable peak current limit
Avoid AM band interference and crosstalk
- 200kHz to 2.2MHz dynamically programmable switching frequency
- Spread spectrum frequency modulation
- Optional clock synchronization
Minimize solution size for space constraint applications
- R_DS(ON) 50mΩ/50mΩ/100mΩ (LS/HS/ISO) integrated FET
- Support up to 2.2MHz with small L-C

Minimized light load and idle state current consumption
- 25µA Quiescent current into V_IN pin
- 0.5µA Shutdown current into V_IN pin
- Selectable auto PFM and forced PWM mode
- True load disconnect during shutdown or fault conditions
Integrated protection features
- Support V_IN close to V_OUT operation
- Input undervoltage lockout and output overvoltage protection
- Hiccup output short circuit protection
- Power good indicator
- Thermal shutdown protection at 165°C
Higher than 90% efficiency under 0.8A load from 3.3V to 9V conversion

Applications

Advanced driver-assistance system (ADAS)
Automotive infotainment and cluster

Body electronics and lighting
Emergency call (eCall)

Texas Instruments TPS61378-Q1 Synchronous Boost Converter

Features

Applications

Functional Block Diagram

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