TPS4811-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 qualified with the following results

– Device temperature grade 1:

–40°C to +125°C ambient operating

temperature range

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• 3.5-V to 80-V input range (100-V absolute

maximum)

• Output reverse polarity protection down to –30 V

• Integrated 12-V charge pump with 100-μA capacity

• Low 1.6-μA shutdown current (EN/UVLO = Low)

• Strong pull up (3.7 A) and pull down (4 A) gate

driver

• Drives external back-to-back N-Channel MOSFETs

• Variant with Integrated pre-charge switch driver

(TPS48111-Q1) to drive capacitive loads

• Two-level adjustable overcurrent protection

(IWRN, ISCP) with adjustable circuit breaker timer

(TMR) and fault flag output (FLT_I)

• Fast short-circuit protection: 1.2 μs (TPS48111-

Q1), 4 μs (TPS48110-Q1)

• Accurate analog current monitor output (IMON) –

±2 at 30 mV VSNS

• Accurate, Adjustable undervoltage lockout (UVLO)

and overvoltage protection (OV) –

< ±2

• Remote overtemperature sensing (DIODE) and

protection with fault flag output (FLT_T)

2 Applications

• Power distribution box

• Body control module

• DC/DC converter

• Battery management system

3 Description

The TPS4811x-Q1 family is a 100-V smart high side

driver with protection and diagnostics. With wide

operating voltage range of 3.5 V–80 V, the device is

suitable for 12-V, 24-V and 48-V system designs.

It has a strong 3.7-A peak source (PU) and 4-A peak

sink (PD) GATE driver that enables power switching

using parallel FETs in high current system designs.

Use INP as the gate driver control input.

The device has accurate current sensing (±2

) output (IMON) enabling system designs for

energy management. The device has integrated

two-level overcurrent protection with FLT_I output

with complete adjustability of thresholds and

response time. Auto-retry and latch-off fault behavior

can be configured. The device features remote

overtemperature protection with FLT_T output.

The TPS48111-Q1 integrates a pre-charge driver (G)

with control input (INP_G). This features enables

designs that must drive large capacitive loads. In

shutdown mode, the controller draws a total shutdown

current of 1.6 μA at 48-V supply input.

The TPS4811x-Q1 is available in a 19-pin VSSOP

package with a pin removed between adjacent high

voltage and low voltage pins, providing 0.8-mm

clearance.