1V to 13.2V, n-Channel Hot-Swap Controllers
Require No Sense Resistor
16 ______________________________________________________________________________________
To determine the proper circuit-breaker resistor value
use the following equation, which refers to Figure 12:
where I
TRIPSLOW
is the desired slow-comparator trip
current.
The fast-comparator trip current is determined by the
selected R
CB
value and cannot be adjusted indepen-
dently. The fast-comparator trip current is given by:
SC_DET must be connected to OUT through the select-
ed R
SC
when not using R
SENSE
.
R
SENSE
Mode
When operating with R
SENSE
, calculate the circuit-
breaker threshold using the worst possible operating
conditions, and add a 20% overcurrent margin to the
maximum circuit current. For example, with a maximum
expected current of 2A, using a 20% margin, the cur-
rent for calculation is (2A) x (1.2) = 2.4A. The resulting
minimum circuit-breaker threshold is then a product of
this current and R
SENSE
= 0.06&, or (0.06&) x (2.4A) =
0.144V. Using this method to choose a false circuit-
breaker threshold allows the circuit to operate under
worst-case conditions without causing a circuit-breaker
fault, but the circuit-breaker function will still detect a
short-circuit or a gross overcurrent condition.
To determine the proper circuit-breaker resistor value,
use the following equation, which refers to Figure 13:
where, I
TRIPSLOW
is the desired slow-comparator trip
current.
The fast-comparator trip current is determined by the
selected R
CB
value and cannot be adjusted indepen-
dently. The fast-comparator trip current is given by:
SC_DET should be connected to V
CC
when using
R
SENSE
.
I
I x R
R
V
R
TRIPFAST
CB
CBF
CB
CB OS
SENSE
=
+
(
)
?/DIV>
,
R
I
x R
V
I
CB
TRIPSLOW
SENSE
CB
OS
CB
=
(
)
+
,
I
I x R
R
V
R
TRIPFAST
CB
CBF
CB
CB OS
DS ON
T
=
+
(
)
?/DIV>
,
( )
( )
R
I
x R
V
I
CB
TRIPSLOW
DS ON
T
CB OS
CB
=
(
)
+
( )
( )
,
TC
SELECT
I
CB
MAX5925
MAX5926
SENSE
GATE
V
S
R
CB
I
LOAD
R
CBF
R
SENSE
V
OUT
OUT
CB
SLOW
COMPARATOR
V
CB,TH
V
CB,OS
FAST
COMPARATOR
V
CBF,TH
V
CB,OS
Figure 13. Circuit Breaker Using R
SENSE
TC
SELECT
SLOW
COMPARATOR
V
CB,TH
I
CB
MAX5925
MAX5926
CB
SENSE
GATE
V
S
R
CB
I
LOAD
R
CBF
R
DS(ON)
V
CB,OS
V
OUT
OUT
FAST
COMPARATOR
V
CBF,TH
V
CB,OS
Figure 12. Circuit Breaker Using R
DS(ON)
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MAX5929BEEG+
IC HOT SWAP CTLR QUAD 24QSOP
MAX5930AEEG+
IC HOT SWAP CTLR PWR SEQ 24QSOP
MAX5932ESA+T
IC HOT-SWAP CONTROLLER 8-SOIC
MAX5933EESA+
IC HOT-SWAP CONTROLLER 8-SOIC
MAX5934EEE+
IC HOT-SWAP CONTROLLER 16-QSOP
MAX5935EAX+
IC CTRLR POWER QUAD 36-SSOP
MAX5937LCESA+
IC HOT-SWAP CTRLR -48V 8-SOIC
MAX5938LEEE+
IC HOT-SWAP CTRLR -48V 16-QSOP
相关代理商/技术参数
MAX5926EEE+T
功能描述:热插拔功率分布 1-13.2V Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5926EEE-T
功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5926EVKIT
制造商:Maxim Integrated Products 功能描述:1V TO 13.2V N-CHANNEL HOT-SWAP CON - Rail/Tube
MAX5927AETJ+
功能描述:热插拔功率分布 Quad Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5927AETJ+T
功能描述:热插拔功率分布 Quad Hot-Swap Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5927ETJ
功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5927ETJ+
功能描述:热插拔功率分布 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5927ETJ+T
功能描述:热插拔功率分布 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
