L9958 STMicroelectronics

L9958 Low R SPI controlled H-Bridge DSON Datasheet - production data The H-Bridge is protected against over temperature, short circuits and has an undervoltage lockout for all the supply voltages V s and V , and for overvoltage on V . All dd dd 0 03 0 03 malfunctions cause the output stages to go PowerSO-20 PowerSSO24 PowerSO16 tristate. Detailed failure diagnostics on each channel is provided via SPI: short circuit to battery, short Features circuit to ground, short circuit overload, over temperature. Programmable current regulation peak A threshold by SPI up to 8.6typ. Open-load can be detected in ON condition, for Operating battery supply voltage 4.0 VV to 28 the widest application ranges. Current regulation threshold can be set by SPI from 2.5 A to 8.6 A Operating V supply voltage 4.5 VV to 5.5 dd (T yp.), in 4 steps. Guaranteed accuracy is 10 % All pins withstand 19 V, Vs and output pins on all temp range, using an external reference Vwithstand 40 resistor with 1% accuracy over all temp range. Full path R from 100 m (at T C) = -40 to on j Current limitation threshold is linearly reduced by m300 (at T C) =150 j temperature over 165 C.and a thermal warning Logic inputs TTL/CMOS-compatible bit is set by SPI. The H-Bridge contains integrated Operating frequency up to 20 kHz free-wheel diodes. In case of free-wheeling 16-bit SPI interface for condition, the low side transistor is switched on in configuration/diagnostics, daisy chain parallel of its diode to reduce power dissipation. capability A multiple wire bonding technique, as well as ST Over temperature and short circuit protection proprietary package design is making L9958 V undervoltage disable function S compatible with three power packages, for V undervoltage and overvoltage protection dd maximum flexibility: V overvoltage detection dd PowerSO-20 package (medium power, JEDEC Open-load detection in ON condition standard MO166) Full diagnostics in OFF state PowerSO16 package (medium power, lower Enable and disable input cost) Low stand by current (<10 A) PowerSSO24 package (low power, very low cost Voltage and current slew-rate control for low JEDEC standard MO271A). EMI, programmable through SPI Available in three power packages Table 1. Device summary Order code Package Packing Description L9958 PowerSO-20 Tube The L9958 is an SPI controlled H-Bridge, L9958SB PowerSO16 Tube designed for the control of DC and stepper motors in safety critical applications and under extreme L9958XP PowerSSO24 Tube environmental conditions. December 2013 DocID17269 Rev 6 1/38 This is information on a product in full production. www.st.com 0 03 Contents L9958 Contents 1 Block diagram 6 2 Pins description 7 2.1 PowerSO-20 7 2.2 PowerSO16 8 2.3 PowerSSO24 . 9 3 Device description . 10 3.1 Supply range 10 3.2 Control inputs 10 3.2.1 DI and EN inputs 10 3.2.2 DIR and PWM inputs . 11 3.3 Serial peripheral interface (SPI) 12 3.3.1 Daisy chain operation 14 3.4 SPI timing . 14 3.5 SPI communication failure 15 3.6 5 V and 3.3 V output compatibility 15 4 Current regulation 16 4.1 Temperature-dependent current regulation . 16 4.2 Current regulation with low-inductive loads . 17 4.3 Slew rate control in case of current limitation on low-side 17 5 Diagnostics and protections . 19 5.1 Diagnosis reset strategy 19 5.1.1 Reset requests 19 5.1.2 Diagnosis reset bit . 19 5.2 Protection and on state diagnostics . 20 5.2.1 Over-current on high-side - short to ground 20 5.2.2 Over-current on low-side - short to Vs 20 5.2.3 Short circuit over-load 20 5.2.4 Open load in on state . 20 5.2.5 Over-temperature . 21 2/38 DocID17269 Rev 6