參數(shù)資料
型號(hào): MIC2310-2ZTS TR
廠商: Micrel Inc
文件頁(yè)數(shù): 14/34頁(yè)
文件大?。?/td> 473K
描述: IC HOT SWAP CTLR 2CHAN 24TSSOP
標(biāo)準(zhǔn)包裝: 2,500
類(lèi)型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開(kāi)關(guān): 無(wú)
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(lèi)型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 24-TSSOP
包裝: 帶卷 (TR)
Micrel, Inc.
MIC2310
 
 
July 2008 
14
M9999-070108-A
 
Primary Overcurrent (OC) Detector Trips Circuit
Breaker and Asserts I_FLT
Figure 3 below 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 use of an external C
PRIMARY
  capacitor sets the
response time, t
POC
, of the primary OC detector
according to the internal V
PRIL
 threshold voltage and
the CPRIMARY pin discharging current, I
PRI
, where
t
POC
  = t
POCSENSE
  + C
PRIMARY
   (V
PRIL
/I
PRI
). Prior to
triggering   the   primary   OC   detector   (i.e.,   when
V
VCCSENSE
-V
SENSE
  < V
CBP
), a 3mA current source is
enabled to hold the CPRIMARY pin voltage to the
internally-generated V
REG
 voltage. When the primary
OC detector has been triggered, the 3mA current
source is first disabled and a 3礎(chǔ) current sink is
enabled to discharge the external C
PRIMARY
. When
C
PRIMARY
 has discharged below V
PRIL
, a default timer is
enabled. Once the default timer (t
POCSENSE
) times out,
the circuit breaker is tripped, the 3礎(chǔ) current sink is
disabled, and the 3mA current source is enabled to
discharge C
PRIMARY
 back to V
REG
 quickly. 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.
In the event that the CPRIMARY pin is left NC
(intentionally or otherwise), the overcurrent timer
default value is t
POCSENSE
 (250祍 typical), as specified
in the ac specification table. 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.
 
t
POC
 = f(C
PRIMARY
)
V
CC
ENABLE
GATE
V
OUT
V
VCCSENSE
 V
SENSE
I_FLT
PWRGD
Power
Good
Power
Not Good
0V
Primary &
Secondary OC
Detectors Armed
t
POC
V
CBS
V
CBP
I_FLT is asserted by Primary OC
Dtector CB Trip after t
POC
+12V, nominal
V
VREG(UVLOH)
 = +4.25V
V
REG
 = 5V, nominal
V
GSPGH
V
GSPGH
V
PGL
t
POR
 
Figure 3. Primary OC Detector Trips Circuit Breaker
 
相關(guān)PDF資料
PDF描述
MIC2341-2YTQ IC HOT PLUG CTLR DUAL PCI 48TQFP
MIC2569YQS TR IC POWER SWITCH CABLECARD 16QSOP
MIC2583R-MBQS TR IC CTRLR HOT SWAP 200MV 16-QSOP
MIC2585-2MBTS TR IC CTRLR HOT SWAP DUAL 24-TSSOP
MIC2586R-2BM TR IC CTRLR/SEQ HOT SWAP 14-SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC23150-4YMT EV 功能描述:電源管理IC開(kāi)發(fā)工具 2.0A 4MHz HyperLight Load Buck Regulator - Evaluation Board RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
MIC23150-4YMT TR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 2.0A 4MHz HyperLight Load Buck Regulator RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC23150-4YMT-TR 功能描述:Buck Switching Regulator IC Positive Fixed 1.2V 1 Output 2A 8-VFDFN Exposed Pad, 8-MLF? 制造商:microchip technology 系列:HyperLight Load? 包裝:剪切帶(CT) 零件狀態(tài):有效 功能:降壓 輸出配置:正 拓?fù)?降壓 輸出類(lèi)型:固定 輸出數(shù):1 電壓 - 輸入(最小值):2.7V 電壓 - 輸入(最大值):5.5V 電壓 - 輸出(最小值/固定):1.2V 電壓 - 輸出(最大值):- 電流 - 輸出:2A 頻率 - 開(kāi)關(guān):4MHz 同步整流器:是 工作溫度:-40°C ~ 125°C (TJ) 安裝類(lèi)型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤(pán),8-MLF? 供應(yīng)商器件封裝:8-MLF?(2x2) 標(biāo)準(zhǔn)包裝:1
MIC23150-55YMT TR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 2.0A 4MHz HyperLight Load Buck Regulator RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC23150-55YMT-TR 功能描述:Buck Switching Regulator IC Positive Fixed 1.35V 1 Output 2A 8-UFDFN 制造商:microchip technology 系列:HyperLight Load? 包裝:剪切帶(CT) 零件狀態(tài):停產(chǎn) 功能:降壓 輸出配置:正 拓?fù)?降壓 輸出類(lèi)型:固定 輸出數(shù):1 電壓 - 輸入(最小值):2.7V 電壓 - 輸入(最大值):5.5V 電壓 - 輸出(最小值/固定):1.35V 電壓 - 輸出(最大值):- 電流 - 輸出:2A 頻率 - 開(kāi)關(guān):4MHz 同步整流器:是 工作溫度:-40°C ~ 125°C (TJ) 安裝類(lèi)型:表面貼裝 封裝/外殼:8-UFDFN 供應(yīng)商器件封裝:8-TDFN(2x2) 標(biāo)準(zhǔn)包裝:1