AMIS-39101

AMIS-39101: Octal High-Side Driver with Protection Data Sheet 1.0 General Description The AMIS-39101 is a robust high-side driver IC featuring eight independent high current output drive channels along with a number of integrated fault-protection circuits. This highly integrated product is designed for controlled delivery of power to a large variety of loads in industrial applications including motors, relays and LED arrays, among others. With all driver output channels in the conducting state, each channel can source up to 350mA of continuous current (resistive load). In cases where all output drivers are not active, higher output current per channel can be achieved provided that the thermal limits of the device are not exceeded. Furthermore, in order to minimize system cost each output driver has built-in fly-back diodes. The device withstands short-circuits to ground and supply, respectively. It is designed with an array of integrated protection features including over-temperature and over-current detection and shut down. The integrated charge pump requires only one external capacitor and provides for operation of the critical fault-protection circuitry even in case of low supply voltages. The device can be interfaced to a variety of microcontrollers via the serial peripheral interface (SPI) link, in turn allowing for monitoring and controlling the state of each of the output drivers individually. In this case, at the onset of a potential hazardous situation the drivers are switched off and the diagnostic state of the drivers can be extracted via the SPI interface. The device also features a power down mode for reduced power consumption and has high built-in electrostatic discharge (ESD) protection capability for robust operation. 2.0 Key Features • • • • • • • • • • • • Eight high-side output drivers Up to 830mA continuous current per driver pair (resistive load) Charge pump with one external capacitor SPI Short-circuit protection Diagnostic features Power-down mode Internal thermal shutdown 3.3V and 5V microcontroller compliant Excellent system ESD Automotive compliant SO28 package with low Rthja 3.0 Typical Applications • • • • • Actuator control LED drivers Relays and solenoids Industrial process control Automotive load management 4.0 Ordering Information Product Name AMIS39101AGA Package PSOP 300-28 (JEDEC MS-013) Temperature Range -40°C…85°C AMI Semiconductor – November 06 - M-20638-001 www.amis.com 1 AMIS-39101: Octal High-Side Driver with Protection Data Sheet 5.0 Block Diagram Figure 1: Block Diagram AMI Semiconductor – November 06 - M-20638-001 www.amis.com 2 AMIS-39101: Octal High-Side Driver with Protection 6.0 Typical Application Diagram Data Sheet Figure 2: Typical Application Diagram 6.1 External Components It is important to properly decouple the power supplies of the chip with external capacitors that have good high frequency properties. The VS1, VS2, VS3, and VS4 pins are shorted on the PCB level. Also GND1, GND2, GND3, GND4, GND5, GND6, TEST, TEST1, and TEST2 are shorted on the PCB level. Table 1: External Components Component Function CVS Ccharge_pump Cout Cout (2) (2) Min. 100 0.47 1 22 22 (1) Value Max. 47 Tol. [%] ± 20 Units nF nF nF Decoupling capacitor; X7R Charge pump capacitor EMC connector on connector Decoupling capacitors; 50V Decoupling capacitors; 50V Load resistance Load inductance at maximum current The capacitor must be placed close to the AMIS-39101 pins on the PCB. Both capacitors are optional and depend on the final application and board layout. ± 20 ± 20 65 300 350 ± 10 nF nF Ω mH CVDD RLoad LLoad Notes: (1) (2) AMI Semiconductor – November 06 - M-20638-001 www.amis.com 3 AMIS-39101: Octal High-Side Driver with Protection 7.0 Pin Description Data Sheet Figure 3: Pin Description of the AMIS-39101 Table 2: Pin Out Pin Name 1 TEST1 2 CLK 3 WR 4 OUT1 5 VS1 6 OUT2 7 GND1 8 GND2 9 OUT3 10 VS2 11 OUT4 12 DIN 13 DOUT 14 TEST2 15 GND3 16 TEST 17 CAPA1 18 OUT5 19 VS3 20 OUT6 21 GND4 22 GND5 23 OUT7 24 VS4 25 OUT8 26 PDB 27 VDDN 28 GND6 Description Connect to GND Schmitt trigger SPI CLK input Schmitt trigger SPI write enable input HS driver output VS power supply HS driver output Power ground and thermal dissipation path junction-to-PCB Power ground and thermal dissipation path junction-to-PCB S driver output VS power supply HS driver output SPI input pin (Schmitt trigger or CMOS inverter) Digital three state output for SPI Connect to GND Power ground and thermal dissipation path junction-to-PCB Connect to GND Charge pump capacitor pin HS driver output VS power supply HS driver output Power ground and thermal dissipation path junction-to-PCB Power ground and thermal dissipation path junction-to-PCB HS driver output VS power supply HS driver output Schmitt trigger power-down input Digital supply Power ground and thermal dissipation path junction-to-PCB AMI Semiconductor – November 06 - M-20638-001 www.amis.com 4 AMIS-39101: Octal High-Side Driver with Protection Data Sheet 8.0 Electrical and Environmental Ratings 8.1 Absolute Maximum Ratings Stress levels above those listed in this paragraph may cause immediate and permanent device failure. It is not recommended that more than one of these conditions be applied simultaneously. Table 3: Absolute Maximum Ratings Symbol Description VDDN Power supply voltage VS power supply on pins VS1 to VS4, load dump, VS Pulse 5b 400ms (1) Maximum output current OUTx pins Iout_ON The HS driver is switched on (1) Maximum output current OUTx pins Iout_OFF The HS driver is switched off I_OUT_VS Maximum output current VS1, 2, 3, 4 pins Vcapa1 DC voltage on pin CAPA1 Vdig_in Voltage on digital inputs CLK, PDB, WR, DIN (2) Pins that connect the application (pins VS1..4 and Out1..8) VESD (2) All other pins (3) VESD ESD according charged device model Tj Junction temperature (T