Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
STGAP2SM: High-Voltage Galvanically Isolated Gate Driver for Power Electronics
The STGAP2SM is a single-channel galvanically isolated gate driver
from STMicroelectronics, designed to drive high-voltage MOSFETs and IGBTs with
precision and speed. With robust protection features, high current capability,
and fast switching performance, it’s a top choice for engineers working on
motor drives, solar inverters, and industrial power supplies.
In this article, we’ll explore the key features, technical
specifications, and applications of the STGAP2SM, highlighting why it stands
out as a reliable solution for demanding power electronics designs.
(adsbygoogle = window.adsbygoogle || []).push({});
Key Features of
STGAP2SM
1. High-Voltage Galvanic Isolation
– 4 kV isolation between
input and output for safe high-voltage operation.
2. Powerful Gate Drive Capability
– Delivers 2.3A source
and 4.6A sink output currents to drive large MOSFETs and IGBTs.
3. Wide Supply Voltage Range
– Supports up to 26V gate
driving voltage, with a 3.3V to 5V logic interface.
4. Low Propagation Delay
– Fast 75 ns propagation
delay for quick, accurate switching.
5. Desaturation Protection
– Detects overcurrent
conditions in the power switch and shuts it down to prevent damage.
6. Under-Voltage Lockout (UVLO)
– Prevents the driver
from operating in unstable low-voltage conditions.
7. Integrated Miller Clamp
– Avoids unwanted turn-on
due to Miller effect, enhancing switch reliability.
8. High Noise Immunity
– Withstands high
common-mode transient immunity (CMTI), ideal for noisy industrial
environments.
9. Fault Reporting
– Provides fault feedback
to the controller for safer and smarter system monitoring.
10. Compact & Versatile Package
– Available in a compact
SO-8 package, perfect for space-constrained designs.
(adsbygoogle = window.adsbygoogle || []).push({});
STGAP2SM
Specifications
Parameter Value
Driver Type Single-channel gate
driver
Isolation Voltage 4
kV
Output Current (Source/Sink) 2.3A
/ 4.6A
Input Logic Voltage 3.3V
to 5V
Gate Drive Voltage (VDD) 13V to 26V
Propagation Delay 75
ns (typical)
Desaturation Threshold Adjustable
UVLO Threshold Yes (with hysteresis)
Package Type SO-8
Operating Temperature -40°C to 125°C
(adsbygoogle = window.adsbygoogle || []).push({});
Pin outs
Applications of STGAP2SM
1. Motor Control and Drives
– Drives MOSFETs or IGBTs
in BLDC, PMSM, and AC motors for industrial automation, robotics, and electric
vehicles.
2. DC-DC and AC-DC Power Converters
– Ideal for isolated
buck, boost, and LLC resonant converters.
3. Solar Inverters and Battery Chargers
– Efficiently switches
high-voltage transistors in solar energy systems and EV chargers.
4. Uninterruptible Power Supplies (UPS)
– Provides fast, reliable
switching for backup power systems.
5. Industrial Automation
– Used in servo drives,
inverters, and high-power controllers for smart manufacturing.
6. Welding and Induction Heating Systems
– Handles high-current,
high-voltage switching in industrial heating applications.
For video tutorial
(adsbygoogle = window.adsbygoogle || []).push({});
About The Author
