Other Parts Discussed in Thread: LM5143-Q1, LM5143
Hi Team,
My customer tested the LM5143-Q1 EVM and needs to confirm the following problem.
The attachment is to measure the Vgs and Vds of Q1&Q3 when measuring 3.3V/7A.
CH1: Q3 Vds, CH2: Q3 Vgs. ==Low side.
CH3: Q1 Vds, CH4: Q1 Vgs. ==High side.
LM5143 data sheet page 7: 8.1 Absolute maximum ratings
HB1 to SW1, HB2 to SW2: Specifications are MIN: –0.3V, MAX: +6.5V.
HO1 to SW1, HOL1 to SW1: Specifications are MIN: –0.3V, MAX: V_HB+0.3V.
Excuse me, HO1 to SW1, and HOL1 to SW1 write MIN –5V in the 20ns transient specification, but MAX is not written. How many Volts can this MAX value reach?
At present, the Vgs voltage measured to Q1 (High side) is about 8Vpeak, which has exceeded the specification of 6.5V+0.3V. Is it reasonable?
