Specifications

EVALPFC-3kW-IPZ65R019C7
11
Application Note AN 2014-06
V1.1 January 2015
4.3.4 IC supply under voltage lockout
When V
CC
voltage is below the under voltage lockout threshold V
CCUVLO
, typical 11V, IC is off and the gate
drive is internally pull low to maintain the off state. The current consumption is down to 1.4mA only.
4.3.5 Bulk Voltage Monitor and Enable Function (VBTHL_EN)
The IC monitors the bulk voltage status through VSENSE pin and output a TTL signal to enable PWM IC or
control inrush relay. During soft-start once the bulk voltage is higher than 95% rated value, pin VB_OK
outputs a high level. The threshold to trigger the low level is decided by the pin VBTHL voltage adjustable
externally.
When pin VBTHL is pulled down externally lower than 0.5V most function blocks are turned off and the IC
enters into standby mode for low power consumption. When the disable signal is released the IC recovers by
soft-start.