Octal high and low-side drivers have 40V 550mΩ outputs

Author: EIS Release Date: Feb 15, 2023

Toshiba has created octal high-side and low-side protected load drivers in SSOP30 packaging (9.7 x 7.6 x 1.2mm, 0.65mm pitch).

 

The company is promoting them as smaller alternatives to SSOP24 packaged drivers like TPD2005F and TPD2007F.

 

The new parts use the company’s latest analogue process which is BiCD – combining bipolar, CMOS and DMOS elements.

 

Toshiba TPD2015FN octal high-side driverThe high-side switching TPD2015FN (right) operates across 8 to 40V and -40 to 110°C, and will switch 500mA per channel through its 400mΩtyp 550mΩmax (12Vdd 25°C) output mosfets.

 

The output devices are n-channel, and the IC includes a charge pump to provide the necessary above-Vdd gate drive.

 

The low-side switching TPD2017FN (below) operates across 2.7 – 5.5V Vdd, switching loads connected to up to 40V.

 

Toshiba TPD2017FN octal low-side driver

 

It has 400mΩtyp 550mΩmax mosfets too (but specced at 5Vdd).

 

An active clamp is included to deal with inductive spikes.

 

Both devices have over-current and over-temperature protection, which will recover when current and temperature are again normal.

 

Abs max dissipation is 1.8W (25°C ambient) for the whole package and the junctions operate up to 150°C. Single-channel avalanche capability is at lease 30mJ (25°C ambient 750mA).

 

Inputs switch at 0.8Vmax for low and 2Vmin for high, making them compatible with a variety of host microcontroller voltages.

 

Switch on time is typically 10μs and switch-off is slightly shorter.

 

Applications are foreseen driving resistive and inductive loads including motors, solenoids and lamps – within industrial programmable logic controllers, for example.