June/July 2021

Figure 5: I/O delay time INDUSTRY NEWS 11 www.power-mag.com Issue 3 2021 Power Electronics Europe The high-side driver output is held low if the input to HI is high-impedance due to a 200 k Ω internal resistor to ground. When the boot voltage on CBOOT detects a starting threshold voltage level of 3.2 V (typical) on a rising edge, the output will become active. The output will become inactive after the input falls 0.2 V below the starting threshold. Low-side driver The low-side driver is designed to drive a ground referenced GaN FET. The bias to the low-side driver is internally connected to VCC supply and GND. Figure 5 shows the definitions of the turn-on and turn-off propagation delay times. The interval between input signal and output signal is defined as match delay time. The uP1966E is available from Digi-Key and priced in high volume at $0.50. www.epc-co.com , www.upi-semi.com capacitor, CBOOT, can be charged up each time the low side GaN device is turned on. As the high-side GaN FETs turns on PHASE rises to VIN, forcing the BOOT pin voltage to VIN +VCC that provides a voltage to hold the high-side GaN FET on. To receive your own copy of Power Electronics Europe subscribe today at: www.power-mag.com E P . M E R S E N . C O M NEXT- GEN BATTERY CELLS CONNECT ION AND MON I TOR ING FOR E - MOB I L I TY • Redu ce f oo t p r i n t o f t h e ba t te r y a s s emb l i e s • Modu l a r and f l ex i b l e de s i gn f o r eve r y p l a t f o rms • De s i gned f o r l a r ge s c a l e ma nu f a c t u r i ng • Adap t a t i ve f o rm- f a c to r • S i ng l e - l aye r l a s e r-we l ded i n te r l eaved bu sba r 49 MERSEN AP Power Electronics 2021 86x124.indd 1 07/04/2021 8:36 AM We make cars go We help power the EV and e-mobility platforms of today & the future Insulated Litz for High-Frequency Applications Triple Insulated Winding Wires for Power Electronics UL & VDE certifications for applications up to 1,500 Vpk and thermal classes of 155°C and 180°C Specialty Litz conductors for applications up to 260°C Rubadue.com +1 970.351.6100