L9958 SPI Controlled H-Bridge

The L9958 is an SPI controlled H-Bridge, designed for the control of DC and stepper motors in safety critical applications and under extreme environmental conditions.

The H-Bridge is protected against over temperature, short circuits and has an undervoltage lockout for all the supply voltages Vsand Vdd, and for overvoltage on Vdd. All malfunctions cause the output stages to go tristate.

Detailed failure diagnostics on each channel is provided via SPI: short circuit to battery, short circuit to ground, short circuit overload, over temperature.

Open-load can be detected in ON condition, for the widest application ranges. Current regulation threshold can be set by SPI from 2.5 A to 8.6 A (Typ.), in 4 steps. Guaranteed accuracy is ±10 % on all temp range, using an external reference resistor with 1% accuracy over all temp range.

Current limitation threshold is linearly reduced by temperature over 165 °C.and a thermal warning bit is set by SPI. The H-Bridge contains integrated free-wheel diodes. In case of free-wheeling condition, the low side transistor is switched on in parallel of its diode to reduce power dissipation.

A multiple wire bonding technique, as well as ST proprietary package design is making L9958 compatible with three power packages, for maximum flexibility:

PowerSO-20 package (medium power, JEDEC standard MO166);PowerSO16 package (medium power, lower cost);PowerSSO24 package (low power, very low cost JEDEC standard MO271A).

技术特性

Programmable current regulation peak threshold by SPI up to 8.6 A typ.
Operating battery supply voltage 4.0 V to 28 V
Operating Vdd supply voltage 4.5 V to 5.5 V
All pins withstand 19 V, Vs and output pins withstand 40 V
Full path Ronfrom 100 mΩ (at Tj = -40 °C) to 300 mΩ (at Tj=150 °C)
Logic inputs TTL/CMOS-compatible
Operating frequency up to 20 kHz
16-bit SPI interface for configuration/diagnostics, daisy chain capability
Over temperature and short circuit protection
VSundervoltage disable function
Vddundervoltage and overvoltage protection
Vddovervoltage detection
Open-load detection in ON condition
Full diagnostics in OFF state
Enable and disable input
Low stand by current (<10 μA)
Voltage and current slew-rate control for low EMI, programmable through SPI
Available in three power packages

功能框图

L9958 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
L9958XP	Active	3.557	1000	PowerSSO 24	Tube		L9958XP
L9958TR	Active	4.764	1000	PowerSO 20	Tape And Reel		L9958TR
L9958	Active	4.764	1000	PowerSO 20	Tube		L9958
L9958SB	Active	4.331	1000	PowerSO 16	Tube		L9958SB
L9958SBTR	Active	4.331	1000	PowerSO 16	Tape And Reel		L9958SBTR
L9958XPTR	Active	3.557	1000	PowerSSO 24	Tape And Reel		L9958XPTR

DATASHEET

描述	版本	大小
L9958 : Integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile	6	640KB

APPLICATION NOTES

描述	版本	大小
AN2650: L9958 stepper motor driver for bipolar stepper motors	1	415KB
AN3327 : L9958 back EMF stall detection algorithm	1	677KB

USER MANUALS

描述	版本	大小
UM0759 : L9958 evaluation board and graphical user interface (GUI)	1	1776KB

MARKETING BROCHURES

描述	版本	大小
BRL99581208 : L9958 – H-bridge DC-motor driver	1.0	480KB