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dc1635afc
DEMO MANUAL DC1635A
DESCRIPTION
LTC4412/LTC4414:
Dual Low Loss High Voltage
PowerPath Controllers
Demonstration circuit 1635A features the
LTC
®
4412HVIS6
and
LTC4414EMS8
, low loss PowerPath™ controllers. Each
controller is capable of automatically switching between
primary and auxiliary power sources for a single output.
There are two electrically isolated circuits, one for each IC,
for independent evaluation. The LTC4412 circuit is intended
for lower current loads, while the LTC4414 circuit is capable
of driving larger PMOS devices for higher current loads.
The input supply voltage ranges are from 2.5V to 36V for
LTC4412 and 5V to 36V for LTC4414. As initially configured
with the default MOSFET, the LTC4412 circuit maximum
input voltage is 18V. The LTC4412 and LTC4414 circuit
current limits are 2A and 8A respectively.
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
PERFORMANCE SUMMARY
The primary power paths can be controlled with external
logic applied to the CTL pins. PowerPath status can be
monitored using the STAT pins. Evaluation of higher current
or more complex sourcing systems can be accomplished
by installing additional ICs, as well as paralleling the inputs
and/or outputs using the
optional
supplied pads. Multiple
standard MOSFET package options are also available on
each circuit for evaluation convenience.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1635A
PARAMETER
CONDITIONS
VALUE
UNIT
Minimum LTC4412 Input Voltage
V
IN1
2.5
V
Maximum LTC4412 Input Voltage
V
IN1
and V
AUX1
18
V
LTC4412 Maximum Current
MOSFET Limited
2
A
Minimum LTC4414 Input Voltage
V
IN2
and V
AUX2
5
V
Maximum LTC4414 Input Voltage
V
IN2
and V
AUX2
36
V
LTC4414 Maximum Current
MOSFET Limited
8
A
Specifications are at T
A
= 25°C
