SPF7302

SPF7302 Full Bridge DC Motor Driver Features and Benefits ▪ Supply voltage, VBB , 36 V maximum ▪ Maximum DC current 3 A continuous, 6 A pulsed (1 kHz, duty cycle < 1%, pulse width < 10 μs) ▪ RDS(on) = 300 mΩ maximum, at TJ = 125ºC ▪ Operation modes: forward, reverse, brake (high- or lowside freewheeling current circulation) ▪ Output disable pin (DI pin) ▪ Protections: ▫ Overvoltage protection (OVP), 36 V minimum ▫ Overcurrent protection (OCP), 3 A typical ▫ Overcurrent limitation (OCL), 6 A typical ▫ Externally adjustable delay timer to halt OCL ▫ Thermal shutdown protection (TSD), 151°C minimum ▫ Undervoltage lockout on VBB (UVLO), 4.2 V minimum ▫ Open load detection at startup ▪ Diagnosis output linked to OVP, OCP, TSD, UVLO, and open load detection, at startup and in operation Package: 16 pin HSOP with exposed thermal pad and tabs Description The SPF7302 is a fully protected, single chip full-bridge driver IC for DC brush motor applications. The various protection circuits integrated are: overvoltage protection (OVP); overcurrent protection (OCP) with latch, which is adapted to the DMOSFETs in each full bridge; undervoltage lockout (UVLO); open load detection; and overcurrent limitation. The package is a thermally enhanced 16-pin HSOP power package with an exposed thermal pad on the bottom side of the package. Not to scale Functional Block Diagram CP VBB VREF Diag High-Side OCL High-Side Gate Driver with OVP HS1 IN1 IN2 DI LS1 Low-Side Gate Driver Diag Low-Side OCL Diag Low-Side Gate Driver Low-Side OCP PGND LS2 Diag Open Circuit Detection Diag High-Side OCP High-Side Gate Driver with OVP HS2 Diag Open Circuit Detection OUT1 OUT2 VBB VBB VBB VBB PreRegulator Diag OVP UVLO TSD IN1 IN2 DI DIAG Diagnostics Diag DLY LGND PGND 28211 SPF7302 Full Bridge DC Motor Driver Selection Guide Part Number SPF7302 Package Thermally enhanced surface mount (HSOP), 16-pin Packing Minimum quantity 1400 pieces Absolute Maximum Ratings at TA = 25°C Characteristic Supply Voltage IN1, IN2, DI, and DLY Pin Input Voltage Output Current DIAG Pin Output Voltage DIAG Pin Input Current Symbol VBB Vx IO IOpeak VDIAG IDIAG DIAG pin sink current Notes Rating –0.3 to 36 –0.3 to 6 ±3 Unit V V A A V mA Continuous: 1 kHz, duty cycle