MC33926

MC33926 5.0 A throttle control H-bridge Rev. 16 — 19 February 2020 Data sheet: technical data 1 General description The 33926 is a SMARTMOS monolithic H-bridge power IC designed primarily for automotive electronic throttle control, but is applicable to any low-voltage DC servo motor control application within the current and voltage limits stated in this specification. It meets the stringent requirements of automotive applications and is fully AEC-Q100 grade 1 qualified. The 33926 is able to control inductive loads with currents up to 5.0 A peak. RMS current capability is subject to the degree of heatsinking provided to the device package. Internal peak-current limiting (regulation) is activated at load currents above 6.5 A ±1.5 A. Output loads can be pulse width modulated (PWM’ed) at frequencies up to 20 kHz. A load current feedback feature provides a proportional (0.24 % of the load current) current output suitable for monitoring by a microcontroller’s A/D input. A status flag output reports undervoltage, overcurrent, and overtemperature fault conditions. Two independent inputs provide polarity control of two half-bridge totem-pole outputs. Two independent disable inputs are provided to force the H-bridge outputs to tri-state (high-impedance off state). An inverted input changes the IN1 and IN2 inputs to low (true logic). 2 Simplified application diagram VDD VPWR MCU SF FB IN1 IN2 INV SLEW D1 D2 EN 33926 VPWR CCP OUT1 OUT2 PGND AGND motor Figure 1. Simplified app...