參數(shù)資料
型號: ISL6557ACBZ-T
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Multi-Phase PWM Controller for Core-Voltage Regulation
中文描述: SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PDSO24
封裝: LEAD FREE, PLASTIC, MS-013AD, SOIC-24
文件頁數(shù): 11/19頁
文件大?。?/td> 540K
代理商: ISL6557ACBZ-T
11
To enable the controller, VCC must be greater than the POR
threshold; the voltage on EN must be greater than 1.23V and
VID cannot be equal to 11111. Once these conditions are
true, the controller immediately initiates a soft start
sequence.
SOFT-START
The soft-start time, t
SS
, is determined by an 11-bit counter
that increments with every pulse of the phase clock. For
example, a converter switching at 250kHz has a soft-start
time of
T
SS
SW
------------
8.2ms
=
=
(EQ. 5)
ISL6557A
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