SG Micro SGM48211

The SGM48211 is a half-bridge MOSFET driver with 4A peak source and sink output current capability, which makes it possible to drive large power MOSFETs with minimized switching losses. The two channels of high-side and low-side are totally independent with 3ns (TYP) delay matching between the turn-on and turn-off of each other. The maximum withstanding voltage of the input stage of SMG48211 is 20V. Due to the -10VDC voltage endurance capacity of its input stage, the driver has enhanced robustness and can be interfaced to pulse transformers directly without using rectifier diodes. With a wide input hysteresis, the device can receive analog or digital PWM signals with improved noise immunity. A 120V rated bootstrap diode is integrated internally to save the external diode and reduce PCB dimension size. Under-voltage lockout (UVLO) is integrated in both the high-side and the low-side drivers. The output of each channel is forced low if the corresponding driving voltage falls below the specified threshold. The SGM48211 is available in Green SOIC-8, SOIC-8 (Exposed Pad) and TDFN-4×4-8AL packages.

Key features

• Wide operating range: 8V to 17V
• Drive two N-MOSFETs configured in half bridge
• Maximum blocking voltage: 120V DC
• Integrated internal bootstrap diode for cost saving
• 4A peak sink and source currents
• -10V to 20V tolerance of input pins
• COMS/TTL compatible Inputs
• 6.5ns (TYP) rise time and 4.7ns (TYP) fall time with 1000pF load
• Propagation delay time: 31ns (TYP)
• Delay matching: 3ns (TYP)
• UVLO functions for both high-side and low-side drivers
• -40℃ to +140℃ operating junction temperature range
• Available in Green SOIC-8, SOIC-8 (Exposed pad) and TDFN-4×4-8AL packages

Applications

• Power converters in 48V or lower systems used in Telecom, Datacom
• Half-bridge, full-bridge, push-pull, synchronous-buck
• Synchronous rectifiers
• Class-D audio amplifiers