Solution

Single-channel SiC Mosfet Driver Core with Active Miller Clamp

Release time:

2023-05-31 18:35

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PRODUCT INTRODUCTION
This product is a compact, low-cost single-channel driver coredesigned by APL for the third generation SiC devices. The drive coreincludes isolated DC/DC power supply, and meets the requirementsof reinforced insulation. lt provides Active Miller clamp, UVLO, shortcircuit protection, overtemperature protection. With the maximumcurrent of 6A, it supports the driving power up to 1.5W with thenegative voltage output, provides higher drive reliability for the 3rdgeneration SiC devices
 
DESIGN SPECIFICATION
Symbol Parameter Condition / Description Min. lxp. Max. Unit
VoD Input power supply voltage Voo~GND o   13.5 v
VN-M Logicsignalinputvoltage   o   6.5 v
RESET RESETsignal   o   6.5 v
lo Gate output peak current   -6   6 A
lFo FAULTinput current       1 mA
lbc verage input PS curent TA= 25℃     185 mA
fMAx) Max switchingfrequency Output pow <1.5w     300 kHz
CMTI ommon-Mode Transint lmmunity Inputto Output     100 Vns
Co Coupling capacitance Inputto Output   5.5   pE.
ci Input Capaditance     500   pF.
Viso lnsulation voltage Inputto output,AC50Hz,60s     3750 ms,
ToPR Operating temperature No condensation allowade -40   85 c
TsT Storagetemperature No condensation allowabe -55   125 c

 

PRODUCT FEATURES

· Maximum switch frequency up to 300KHz;

· lsolated DC/DC power supply inside. 3750Vrms isolation voltage meets reinforced insulation:

· Maximum +/-6A drive current:

· CMTl up to 100KV/us:

· Active Miller clamp;

· UVLO, OTP, short-circuit protection with soft shutdown;

 

CIRCUIT BLOCK DIAGRAM

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 MEASUREMENT RESULTS AND WAVEFORMS

 

picPower On: Vcc&negative output &5V LDO output

picPower Off:Vcc&negative output &5V LDO output

 

 

picUVLO test

 

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Single-channel SiC Mosfet Driver Core with Active Miller Clamp

2023-06-08