|Package | PIN:||PWP | 20|
|Temp:||Q (-40 to 125)|
- Qualified for Automotive Applications
- AEC-Q100 Qualified with the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient OperatingTemperature
- Device HBM ESD Classification Level 2
- Device CDM ESDClassification Level C4B
- 2-V to 36-V Input Voltage Range for VOUT = 5 V
- 5-V or 12-V Fixed Output Voltage (TPS55165-Q1)
- Adjustable Output Voltage Options from 5.7 V to
9 V (TPS55160-Q1 and TPS55162-Q1)
- Up to 85% Efficiency
- 1-A Output Current for VOUT = 5 V and VIN ≥ 5.3 V
- 0.8-A Output Current for VOUT = 5 V and
VIN ≥ 3.8 V
- 0.4-A Output Current for VOUT = 5 V and
VIN ≥ 2.3 V
- Automatic Transition Between Step-Down and Step-Up Mode
- Low-Power Mode for Improved Efficiency at Light Load Conditions (TPS55160-Q1 and
- Device Quiescent Current Less than 15 µA in Low-Power Mode (TPS55160-Q1 and
- Device Shutdown Current Less than 3 µA
- Forced Fixed-Frequency Operation at 2 MHz
- 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
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Texas Instruments TPS55162QPWPRQ1
The TPS5516x-Q1 family of devices is a high-voltage synchronous buck-boost DC-DCconverter. The device provides a stable power-supply output from a wide varying input-power supplysuch as an automotive car battery. The buck-boost overlap control ensures automatic transitionbetween step-down and step-up mode with optimal efficiency. The TPS55165-Q1 output voltage can beset to a fixed level of 5 V or 12 V. The TPS55160-Q1 and TPS55162-Q1 devices have a configurableoutput voltage ranging from 5.7 V to 9 V that is set by an external resistive divider.
Output currents can be as high as 1 A for a normal car battery voltage, and can bemaintained at 0.4 A 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) controlcircuit using synchronous rectification to obtain maximum efficiency. The switching frequency isset to 2 MHz (typical) which allows for the usage of a small inductor that uses less boardspace.
A selectable spread-spectrum option (TPS55160-Q1 and TPS55165-Q1) helps reduce radiatedelectromagnetic interference (EMI). Internal loop compensation eliminates the need for externalcompensation components. In low-power mode (TPS55160-Q1 and TPS55165-Q1), the device achieves aquiescent current of less than 15 µA which allows an automotive electronic control unit (ECU) tostay in standby mode (for example, listen-to-CAN mode) while achieving OEM quiescent-currentrequirements. The low-power mode can be disabled which forces the converter to operate in fullcontinuous mode at a fixed switching frequency of 2 MHz (typical) for the entire load-currentrange. The maximum average current in the inductor is limited to a typical value of 2 A.
The converter can be disabled to minimize battery drain. Furthermore, the device offers apower-good (PG) pin to indicate when the output rail is less than the specified tolerance. Thedevice also has a power-latch function to allow an external microcontroller unit (MCU) to keep theoutput voltage available for as long as needed.
The device is available in a 20-pin HTSSOP PowerPAD package.