Texas Instruments TPS5516x-Q1 Buck-Boost DC-DC Converters
Texas Instruments TPS5516x-Q1 Buck-Boost DC-DC Converters provide a stable power-supply output from a wide varying input-power supply, such as an automotive car battery. The buck-boost overlap control ensures the automatic transition between step-down and step-up mode with optimal efficiency. The TPS55165-Q1 output voltage can be set to a fixed level of 5V or 12V. The Texas Instruments TPS55160-Q1 and TPS55162-Q1 devices have a configurable output voltage ranging from 5.7V to 9V set by an external resistive divider.
Output currents can be as high as 1A for a normal car battery voltage and can be maintained at 0.4A for lower input voltages, such as those for common battery-cranking profiles. The buck-boost converter is based on a fixed-frequency, pulse-width-modulation (PWM) control circuit using synchronous rectification to obtain maximum efficiency. The switching frequency is set to 2MHz (typical), allowing for a small inductor with less board space.
Features
- Qualified for Automotive Applications
- AEC-Q100 Qualified with the Following Results
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- 2V to 36V Input Voltage Range for VOUT = 5V
- 5V or 12V Fixed Output Voltage (TPS55165-Q1)
- Adjustable Output Voltage Options from 5.7V to 9V (TPS55160-Q1 and TPS55162-Q1)
- Up to 85% Efficiency
- 1A Output Current for VOUT = 5V and VIN ≥ 5.3V
- 0.8A Output Current for VOUT = 5V and VIN ≥ 3.8V
- 0.4A Output Current for VOUT = 5V and VIN ≥ 2.3V
- Automatic Transition Between Step-Down and Step-Up Mode
- Low-Power Mode for Improved Efficiency at Light Load Conditions (TPS55160-Q1 and TPS55165-Q1)
- Device Quiescent Current Less than 15µA in Low-Power Mode (TPS55160-Q1 and TPS55165-Q1)
- Device Shutdown Current Less than 3µA
- Forced Fixed-Frequency Operation at 2MHz
- Selectable Spread Spectrum (TPS55160-Q1 and TPS55165-Q1)
- Wake-up Through IGN With Power-Latch Function
- Smart Power-Good Output With Configurable Delay Time
- Overtemperature Protection and Output Overvoltage Protection
- Available in Easy-to-Use 20-Pin HTSSOP PowerPAD™ Package
Applications
- Infotainment and Cluster
- Body Electronics and Gateway Modules
- Industrial Applications With Fluctuating Input Voltage
- Solar-to-Battery Charging
- Li-Ion Battery Packs
Simplified Schematic
Related Development Tools
Texas Instruments TPS5516xEVM Evaluation Modules (EVMs)
Helps designers to evaluate the operation and performance of the TPS55160-Q1 and TPS55165Q1.
Paskelbta: 2018-01-18
| Atnaujinta: 2022-10-19