TPS551892QWRYQRQ1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 qualified:

– Device temperature grade 1: –40°C to +125°C

ambient operating temperature range

• Wide input and output voltage range

– Wide input voltage range: 3.0V to 27V

(absolute maximum. 42V)

– Programmable output voltage range: 0.8V to

22V

– ±1% reference voltage accuracy

– Adjustable output voltage compensation for

voltage droop over the cable

– ±5% accurate output current monitoring

• High efficiency over entire load range

– 96% efficiency at VIN = 12V, VOUT = 20V and

IOUT = 3A

– Programmable PFM and FPWM mode at light

load

• Avoid frequency interference and crosstalk

– Optional clock synchronization

– Programmable switching frequency from

200kHz to 2.2MHz

• EMI mitigation

– Optional programmable spread spectrum

– Lead-less package

• Rich protection features

– Output overvoltage protection

– Hiccup mode for output short-circuit protection

– Thermal shutdown protection

– 8 A average inductor current limit

• Small solution size

– Maximum switching frequency up to 2.2MHz

– 3.0mm × 5.0mm HotRod™ QFN package

2 Applications

• Advanced driver-assistance system (ADAS)

• Wireless charger

• Automotive infotainment and cluster

3 Description

The TPS551892-Q1 is a synchronous buck-boost

converter that is optimized for converting battery

voltage or adapter voltage into power supply rails. The

TPS551892-Q1 integrates four MOSFET switches

providing a compact solution for a variety of

applications. The TPS551892-Q1 has up to 27V input

voltage capability. When working in boost mode, the

TPS551892-Q1 can deliver 60W from a 12V input. It

is capable of delivering 45W from 9V input voltage.

The TPS551892-Q1 employs an average currentmode

control scheme. The switching frequency is

programmable from 200kHz to 2.2MHz by an external

resistor and can be synchronized to an external clock.

The TPS551892-Q1 also provides optional spread

spectrum to minimize peak EMI.

The TPS551892-Q1 offers output over-voltage

protection, average inductor current limit, cycle-bycycle

peak current limit, output short circuit protection.

The TPS551892-Q1 also ensures safe operating

with optional output current limit and hiccup-mode

protection in sustained overload conditions.

The TPS551892-Q1 can use a small inductor and

small capacitors with high switching frequency. It is

available in a 3.0mm × 5.0mm QFN package.