Si827x Isolated Gate Drivers

The Silicon Labs Si827x provides options for either a single driver or a combination of two 4 A isolated drivers in a single package for isolated gate drive applications. The Si827x, with its high performance noise immunity, eliminates the risk posed by faster switching speeds. The high noise transients generated by the faster switching will not affect signal integrity through the driver, thereby eliminating the risk of loss of modulation. The ultra-high latch-up spec of 400 kV/µs makes the Si827x extremely robust and will prevent permanent latch-up damage. 

The Si827x has an EN (active high) instead of the usual DIS (active low) pin, UVLO fault protection, a de-glitch feature for filtering noisy inputs and highly precise dead time (DT pin) programmability. With this feature, users can precisely control the “dead time” between the two drivers switching to optimize system efficiency and safety. The drivers operate with a wide range of 2.5 V - 5.5 V input VDD and a maximum drive supply voltage of 30 V.  

The lower VDDI voltage capability of 2.5 V lets users design with a low voltage power supply consuming less power, increasing system efficiency, and providing compatibility with low power MCUs. The isolation is based on the Silicon Labs proprietary capacitive coupled technology, which offers low EMI emissions, long lifetimes, fast and accurate timing specs, and a wide temperature range of -40°C to +125°C. Devices are offered in a choice of compact packages, including NB SOIC (8 and 16 pin) and a compact 5 x 5 mm LGA. 

Features

  • High noise immunity of 200 kV/µs and latch-up immunity of 400 kV/µs protects from transients
  • Fast and accurate timing specs, with very low jitter of 200 ps
  • EN pin ensures safe default state
  • DT pin for accurate dead-time programming
  • Low voltage operation down to 2.5 V for controller


Si827x Product Matrix

Devices
Part Number Data Sheet Evaluation Kit Isolation Rating (Output-Output Vdc) Overlap Protection and Dead Time Control AEC-Q100 Package Type Temperature Range (°C) Driver Supply Min (V) Driver Supply Max (V) Input Supply (V) Peak Output Current (A) Output Configuration Input Type Max Propagation Delay (ns) UVLO Voltage (V) Isolation Rating Input-Output (kV rms) 10 kV Surge
Si8273ISO-KIT 2100 No Yes NB SOIC8 -40 125 5 30 2.5 5.5 4 Single Driver, Separate Pull Up/Down Single Input 60 5 2.5 No
Si8273ISO-KIT 2100 No Yes NB SOIC8 -40 125 5 30 2.5 5.5 4 Single Driver, Separate Pull Up/Down Single Input 60 8 2.5 No
Si8273ISO-KIT 2100 No Yes NB SOIC8 -40 125 5 30 2.5 5.5 4 Single Driver, Separate Pull Up/Down Single Input 60 12 2.5 No
Si8273ISO-KIT 2100 No Yes NB SOIC8 -40 125 5 30 2.5 5.5 4 Single Driver, Separate Pull Up/Down Single Input 60 4.2 2.5 No
Si8273ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 5 2.5 No
Si8273ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 5 2.5 No
Si8273ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 5 2.5 No
Si8273ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 5 2.5 No
Si8273ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 12 2.5 No
Si8273ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 12 2.5 No
Si8273ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 4.2 2.5 No
Si8273ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side VIA, VIB 60 4.2 2.5 No
Si8274ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 5 2.5 No
Si8274ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 5 2.5 No
Si8274ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 5 2.5 No
Si8274ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 5 2.5 No
Si8274ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 8 2.5 No
Si8274ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 12 2.5 No
Si8274ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 4.2 2.5 No
No No No
Si8274ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 4.2 2.5 No
Si8274ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 4.2 2.5 No
Si8274ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 High Side / Low Side PWM 105 4.2 2.5 No
Si8275ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 Dual Driver VIA, VIB 60 5 2.5 No
Si8275ISO-KIT 900 Yes Yes LGA14 -40 125 5 30 2.5 5.5 4 Dual Driver VIA, VIB 60 5 2.5 No
Si8275ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 Dual Driver VIA, VIB 60 4.2 2.5 No
Si8275ISO-KIT 2100 Yes Yes NB SOIC16 -40 125 5 30 2.5 5.5 4 Dual Driver VIA, VIB 60 4.2 2.5 No
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