Gate driver saves board space while raising efficiency
Board space is saved by the high-frequency, 100V-rated DGD0579U gate driver from Diodes. The high-side and low-side gate driver has a built-in bootstrap diode and is capable of driving two N-channel MOSFETs in the half-bridge configurations that are commonly used for motor control and DC/DC power delivery functions.
The DGD0579U targets high power applications, like e-bikes, autonomous robot appliances and cordless power tools, which have design criteria of heightened efficiency levels with greater compactness.
The 100V floating high-side driver has short propagation delays (typically 60ns) and delay matching (within 10ns) to enable higher switching speeds and reduced dead-time. The result is smaller, more efficient power system implementations.
MOSFET protection mechanisms are directly integrated into the device, improving system reliability, while optimising board space usage and reducing component count compared to traditional discrete solutions. These mechanisms include cross conduction prevention, so that the high side and low side MOSFETs are not on at the same time, and under-voltage lockout (UVLO) to address potential supply losses.
There is also an enable pin for power management and low standby current of less than one microA, to prolonged battery running times. Compatible with control signals from microcontrollers and PWM controller ICs, the DGD0579U supports TTL and CMOS logic level inputs (down to 3.3V).
The DGD0579U gate driver is supplied in the compact W-DFN3030-10 package, with a 3.0 x 3.0mm footprint and a 0.75mm profile height.
