Description:The ISL78420 is a 100V, 2A high frequency half-bridge NMOS FET driver with a tri-level PWM input. With an operating supply voltage range of 8V to 14V, it supports a 114V bootstrap bias for driving the high-side NMOS in 100V half-bridge applications. This part is a derivative of the industrial family of HIP2120-HIP2123 100V half-bridge drivers. This driver is designed to work in conjunction with the ISL78220and ISL78225 “Multi-Phase Interleaved Boost PWM Controller with Light Load Efficiency Enhancement”. It
SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Screening Level:
AEC-Q100
Seated Height-Max:
1.2 mm
Supply Current-Max:
4 mA
Supply Voltage-Max:
14 V
Supply Voltage-Min:
8 V
Supply Voltage-Nom:
12 V
Surface Mount:
YES
Terminal Finish:
Pure Matte Tin (Sn) - annealed
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Turn-off Time:
0.06 µs
Turn-on Time:
0.06 µs
Width:
4.4 mm
ISL78420AVEZ Frequently Asked Questions (FAQs)
A good PCB layout is crucial for the ISL78420AVEZ. Ensure that the input and output capacitors are placed close to the IC, and the power traces are wide and short. Use a solid ground plane and avoid routing high-frequency signals near the IC. Refer to the Renesas application note AN1991 for more detailed guidelines.
Choose input capacitors with low ESR (Equivalent Series Resistance) and high ripple current rating. For output capacitors, select ones with low ESR, high capacitance, and a voltage rating that meets or exceeds the output voltage. X5R or X7R ceramic capacitors are good options. Refer to the datasheet for specific recommendations.
The ISL78420AVEZ is rated for operation up to 125°C ambient temperature. However, for reliable operation, it's recommended to keep the ambient temperature below 105°C to ensure the IC's internal temperature remains within the specified range.
To ensure stability, follow the recommended component values and PCB layout guidelines. Also, make sure the input voltage is within the specified range, and the output capacitor is properly selected. If oscillations occur, check for parasitic inductance in the layout and adjust the component values accordingly.
The recommended input voltage range for the ISL78420AVEZ is 2.7V to 5.5V. Operating outside this range may affect the device's performance, efficiency, and reliability.
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ISL78420AVEZ Overview
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