Summary of MAXIM INTEGRATED MAX2270X ULTRA-HIGH CMTI ISOLATED GATE DRIVERS
The MAX2270x series comprises single-channel isolated gate drivers featuring 300kV/μs CMTI, designed for SiC and GaN transistors in inverters and motor controls. Utilizing integrated digital galvanic isolation with a 3kVRMS withstand rating, these devices offer variants with GNDB, Miller clamp, or adjustable UVLO outputs, available in differential or single-ended input configurations to transfer signals between different power domains efficiently.
Parts used in the MAXIM INTEGRATED MAX2270X ULTRA-HIGH CMTI ISOLATED GATE DRIVERS:
- MAX22700 (Common pin GNDB variant)
- MAX22701 (Miller clamp variant)
- MAX22702 (Adjustable under-voltage-lockout UVLO variant)
- Differential input versions (D versions)
- Single-Ended input versions with Enable (E versions)
Maxim MAX2270x Ultra-High CMTI Isolated Gate Drivers are single-channel isolated gate drivers with ultra-high common-mode transient immunity (CMTI) of 300kV/μs (typ). The devices are designed to drive silicon-carbide (SiC) or gallium-nitride (GaN) transistors in various inverter or motor control applications. All devices have integrated digital galvanic isolation using Maxim’s proprietary process technology. The devices feature variants with output options for gate driver common pin GNDB (MAX22700), Miller clamp (MAX22701), or adjustable under-voltage-lockout UVLO (MAX22702). Also, variants are offered as Differential (D versions) or Single-Ended (E versions) inputs. These devices transfer digital signals between circuits with different power domains. All of the devices feature isolation for a withstand voltage rating of 3kVRMS for 60 seconds.
Features
- Matching propagation delay
- 20ns minimum pulse width
- 35ns propagation delay at room temperature
- 2ns part-to-part propagation delay matching at room temperature
- 5ns part-to-part propagation delay matching over -40°C to +125°C temperature range
- Robust galvanic isolation
- Withstands 3kVRMS for 60s (VISO)
- Continuously withstands 848VRMS (VIOWM)
- Withstands ±5kV surge between GNDA and VSSB with 1.2/50μs waveform
- Precision UVLO
- Options to support a broad range of applications
- 3 Output options: GNDB, Miller Clamp, or Adjustable UVLO
- 2 Input configurations: Single-Ended with Enable (E versions) or Differential (D versions)
All devices support a minimum pulse width of 20ns with a maximum pulse width distortion of 2ns. The part-to-part Propagation Delay is matched within 2ns (max) at +25°C ambient temperature, and 5ns (max) over the -40°C to +125°C operating temperature range. This feature reduces the power transistor’s dead time, thus improving overall efficiency. The MAX22700 and the MAX22702 have a maximum RDSON of 1.25Ω for the low-side driver, and the MAX22701 has an RDSON of 2.5Ω for the low-side driver. All devices have a maximum RDSON of 4.5Ω for the high-side driver.
Read more: MAXIM INTEGRATED MAX2270X ULTRA-HIGH CMTI ISOLATED GATE DRIVERS
- What is the typical CMTI of the MAX2270x series?
The typical common-mode transient immunity is 300kV/μs. - Which transistor types are these drivers designed to drive?
They are designed to drive silicon-carbide or gallium-nitride transistors. - Does the device support galvanic isolation withstanding voltage?
All devices feature isolation withstanding 3kVRMS for 60 seconds. - How many output options are available for these devices?
There are three output options: GNDB, Miller Clamp, or Adjustable UVLO. - Can I use these drivers with differential inputs?
Yes, variants are offered as Differential versions. - What is the maximum part-to-part propagation delay matching over the temperature range?
The matching is within 5ns max over the -40°C to +125°C operating temperature range. - What is the minimum pulse width supported by all devices?
All devices support a minimum pulse width of 20ns. - Does the MAX22701 have a different low-side driver RDSON compared to other variants?
Yes, the MAX22701 has an RDSON of 2.5Ω for the low-side driver.
