TPS55165-Q1 Texas instruments

TPS55165-Q1

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TPS55165-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)	2
Vin (max) (V)	36
Vout (max) (V)	12
Vout (min) (V)	5
Duty cycle (max) (%)	99
Features	Spread Spectrum
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