TPS55162-Q1 Texas instruments

TPS55162-Q1

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TPS55162-Q1

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Описание

The TPS5516x-Q1 family of devices is a high-voltage synchronous buck-boost DC-DC converter. The device provides a stable power-supply output from a wide varying input-power supply such as an automotive car battery. The buck-boost overlap control ensures 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 5 V or 12 V. The TPS55160-Q1 and TPS55162-Q1 devices have a configurable output 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 be maintained 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) control circuit using synchronous rectification to obtain maximum efficiency. The switching frequency is set to 2 MHz (typical) which allows for the usage of a small inductor that uses less board space.

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
Functional Safety-Capable
- Documentation available to aid functional safety system design
2-V to 36-V input voltage range for V_OUT = 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 V_OUT = 5 V and V_IN ≥ 5.3 V
0.8-A output current for V_OUT = 5 V and V_IN ≥ 3.8 V
0.4-A output current for V_OUT = 5 V and V_IN ≥ 2.3 V
Automatic transition between step-down and step-up mode
Low-power mode for improved efficiency at light load conditions (TPS55160-Q1/TPS55165-Q1)
Device quiescent current less than 15 µA in low-power mode (TPS55160-Q1/TPS55165-Q1)
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

Topology	Buck-Boost
Vin (min) (V)	3.6
Vin (max) (V)	36
Vout (max) (V)	9
Vout (min) (V)	5.7
Duty cycle (max) (%)	99
Features	Enable, Power good, Spread Spectrum, Synchronous Rectification, UVLO Fixed
Switch current limit (typ) (A)	3.5
Switching frequency (min) (kHz)	2000
Switching frequency (max) (kHz)	2000
Iq (typ) (mA)	0.015
Iout (max) (A)	1
Rating	Automotive
TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 125
Type	Converter