參數(shù)資料
型號: MIC2310-2ZTS TR
廠商: Micrel Inc
文件頁數(shù): 15/34頁
文件大?。?/td> 473K
描述: IC HOT SWAP CTLR 2CHAN 24TSSOP
標準包裝: 2,500
類型: 熱交換控制器
應用: 通用
內(nèi)部開關(guān):
電流限制: 可調(diào)
電源電壓: 10.8 V ~ 13.2 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應商設(shè)備封裝: 24-TSSOP
包裝: 帶卷 (TR)
Micrel, Inc.
MIC2310
 
 
July 2008 
15
M9999-070108-A
 
Secondary OC Detector Trips Circuit Breaker and
Asserts I_FLT
Figure 4 illustrates the behavior of the controller to an
OC event after the primary and secondary OC
detection   circuits   have   been   armed   (upon   the
application of an ENABLE LOW-to-HIGH transition
and after t
POR
) and steady-state operation has been
achieved. Note that the assertion of the controllers
PWRGD digital output occurs when the output load
voltage profile is higher than the controllers V
PGH
 
threshold   voltage   and   the   V
GS
   of   the   external
MOSFET is higher than the controllers V
GSPGH
threshold voltage.
The controllers secondary OC detection threshold is
set by the status of the controllers S[1:0] pins and its
response time is internally set at t
SOCSENSE
 as shown in
the ac specification table. When the secondary OC
detector has sensed a very large current surge
(V
CCSENSE
   V
SENSE
  e V
CBS
), the circuit breaker is
tripped within t
SOCSENSE
. Concurrently, the GATE drive
circuit is disabled and a higher current, fault-mode
pull-down current sink is enabled at the GATE pin.
The DISCH output goes high to (optionally) drive
external pull-down circuitry.
Once the circuit breaker is latched, the I_FLT digital
output is asserted and the PWRGD digital output
becomes de-asserted when the output voltage profile
falls below the controllers V
PGL
 threshold voltage or
the V
GS
  of the external MOSFET falls below the
controllers V
GSPGH
 threshold voltage.
 
 
VCC = 12V, nominal
VVREG(UVLOH) = +4.25V
V
REG
 = 5V, nominal
 
 
Figure 4. Secondary OC Detector Trips Circuit Breaker
 
 
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