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DC1627A-A

Description
eval board for ltc4226-1
CategoryDevelopment board/suite/development tools   
File Size433KB,10 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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DC1627A-A Overview

eval board for ltc4226-1

DEMO MANUAL DC1627A
LTC4226
Wide Operating Range
Dual Hot Swap Controller
Description
Demonstration circuit 1627A is intended to display the
Hot Swap™ functionality of the
LTC
®
4226
wide operating
range dual Hot Swap controller. The DC1627A has two
independent circuits, each for two rails. The circuit placed
on the upper board area is for a high current load.
The first channel of the upper board circuit operates with
a 10A maximum in the +12V rail while the second channel
operates with a 5A maximum in the +5V rail. Provision is
made for the installation of several MOSFET packages to
test the LTC4226's performance during a short time with
the larger current. Circuit LEDs indicate a presence of the
input rail voltages and fault conditions in each rail. There are
two jumpers: one for the current limit multiplicity selection
and the other one for overvoltage protection configuration.
The circuit located on the lower board area is a special
compact circuit for the Apple FireWire/IEEE 1394 power
distribution.
Both channels of this circuit operate with a 1.25A maximum
current in the 12V rails. It is not recommended to use this
circuit for other operating conditions.
There are two versions of the controller: LTC4226-1 and
LTC4226-2. The LTC4226-1 remains off after a fault while
the LTC4226-2 automatically retries after a 0.5 second
delay.
The DC1627A allows estimating the performance of the
LTC4226 in different operation modes such as ramp-up,
steady-state, and overcurrent fault conditions.
Design files for this circuit board are available at
http://www.linear.com/demo
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot
Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of
their respective owners.
performance summary
SYMBOL
V
CC1
V
CC1(UV)
V
CC1(OV)
S1
I
CB1
t
CB1
I
LIM1
t
FTMR1
PARAMETER
Input Supply Range
Input Supply Undervoltage
Input Supply Overvoltage
Output Voltage Slew Rate
Circuit Breaker Current Limit
Timer Period During Circuit Breaker Operation
Current Limit by Current Limit (CL) Amplifier
Upper Circuit +12V Channel
Specifications are at T
A
= 25°C
CONDITIONS
MIN
9.79
V
CC
Rising; Based on the ON1 Pin Threshold
V
CC
Rising
No Current Limit
9.15
15.4
12000
8.91
19
CLS = 0V (1.5×)
CLS = Open (2×)
CLS = 3V (3×)
CLS = 0V (1.5×)
CLS = Open (2×)
CLS = 3V (3×)
13.86
18.42
38.2
2
1.12
0.5
4.11
V
CC
Rising; Based on the ON2 Pin Threshold
V
CC
Rising
No Current Limit
3.86
6.8
12000
10
29
17.2
23
34.6
2.9
1.6
0.7
5
4.11
7.3
11.11
48
20.80
27.47
41.4
4.6
2.6
1.15
7.3
4.37
7.7
TYP
12
9.79
16
MAX
16
10.53
17
UNITS
V
V
V
V/s
A
ms
A
A
A
ms
ms
ms
V
V
V
V/s
dc1627af
Fault Timer Period During CL operation
Upper Circuit +5V Channel
V
CC2
V
CC2(UV)
V
CC2(OV)
S2
Input Supply Range
Input Supply Undervoltage
Input Supply Overvoltage
Output Voltage Slew Rate
1

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