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L9959 Datasheet

Single and dual PMOS high-side H-bridge

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L9959
Single and dual PMOS high-side H-bridge
Datasheet - production data
'!0'03
PowerSSO24
'!0'03
PowerSSO36
Current-monitoring with current feedback
output signal CF
SPI-interface for configuration and diagnosis
Error history in second diagnosis register
Two independent enable pins: "/ABE" and
"DIS"
Control of power stages by SPI or two input
signals, PWM and DIR (configurable via SPI)
Logic levels 5 V compatible
Conformity to improved EMC requirements due
to smart H-bridge switching
Features
Full path RDSON less than 540 mΩ
Continuous load current > 3 A
Operating battery supply voltage 5 V to 28 V
Operating VDD supply voltage 4.5 V to 5.5 V
All ECU internal pins can withstand up to 18 V
Output switching frequency up to 11 kHz
Monitoring of VDD supply voltage
SPI programmable output current limitation
from 5 A to 8.6 A (in 3 steps)
Over temperature and short circuit protection
Full diagnosis capability
Fast switch-off open-drain input/output
Description
L9959S/L9959U and L9959T are single and dual
integrated H-bridges for resistive and inductive
loads featuring output current direction and
supervising functions.
The PowerSSO24 houses one full H-Bridge, while
the PowerSSO36 houses both two H-Bridges that
can work in parallel, through independent input
driving commands, and one full H-bridge, by
improving PCB footprint design versus different
target applications.
Target application ranges from throttle control
actuators to exhaust gas recirculation control
valves in automotive domain to a more general
use to drive DC and Stepper motors.
Order code
L9959S-TR-D
L9959T-TR-D
L9959U-TR-D
Table 1. Device summary
Package
PowerSSO24
PowerSSO36
PowerSSO36
Packing
Tape & Reel
Tape & Reel
Tape & Reel
February 2016
This is information on a product in full production.
DocID027540 Rev 3
1/49
www.st.com


STMicroelectronics Electronic Components Datasheet

L9959 Datasheet

Single and dual PMOS high-side H-bridge

No Preview Available !

Contents
Contents
L9959
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 ESD protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.5 Outputs OUT1 and OUT2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.6 Temperature dependent current reduction . . . . . . . . . . . . . . . . . . . . . . . . 20
3.7 Free-wheeling diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.8 SPI / logic electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Power stage switching behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1.1 PWM mode (same current direction) . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1.2 DIR-change mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.2 Protection and monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2.1 Current feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.2 Current limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2.3 Temperature dependent current reduction . . . . . . . . . . . . . . . . . . . . . . . 27
4.2.4 Short to battery (SCB) and short to Ground (SCG) . . . . . . . . . . . . . . . . 28
4.2.5 Short circuit over load (SCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.6 Open load (OL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.3 VS-undervoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.4 Inverse current at VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.5 /ABE pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.6 VDD-monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.7 VDD-monitor test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.8 Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2/49 DocID027540 Rev 3


Part Number L9959
Description Single and dual PMOS high-side H-bridge
Maker STMicroelectronics
PDF Download

L9959 Datasheet PDF






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