LGA-THSK-KIT-045 EMERSON-NETWORKPOWER [Emerson Network Power], LGA-THSK-KIT-045 Datasheet - Page 2

• Manufacturer Part Number: LGA-THSK-KIT-045
• Description: Embedded Power Device
• Manufacturer: EMERSON-NETWORKPOWER [Emerson Network Power]

Technical Reference Note
Electrical Description
Electrical Description
The LGA C Series is implemented using a voltage mode
single-phase synchronous buck topology. A block
diagram of the converter is shown in Figure 1.
The output voltage is adjustable over a range of
0.59 - 5.1 V by using a resistor or voltage as described
on Page 5. (Factory preset is 0.591V out .)
The converter can be shut down via the remote ON/
OFF. The remote ON/OFF operates with positive logic
that is compatible with popular logic devices. Positive
logic implies that the converter is enabled if the re-
mote ON/OFF input is high (or floating), and disabled if
it is low.
The power good signal is an open collector output that is pulled low by the PWM controller when it
detects the output is not within ±10% of its set value.
The output is monitored for overcurrent and short-circuit conditions. When the PWM controller detects
an overcurrent condition, it forces the module into hiccup mode.
A typical application is shown in Figure 2.
Wide Operating Temperature Range
The LGA C Series's ability to accommodate a wide
range of ambient temperatures is the result of its
extremely high power conversion efficiency and
resultant low power dissipation, combined with
the excellent thermal performance of the
thermally enhanced cover. The maximum output
power that the module delivers will depend on a
number of parameters, primarily:
•
•
•
•
The LGA C Series module has an operating temperature range of -40 °C to 85 °C with suitable derating.
Input voltage range
Output load current
Air velocity (forced or natural convection)
Addition of heatisnk
V
GND
Margin Control
Enable On/Off
in
+Sense
-Sense
Remote
ON/OFF
Trim
Vout
PGood
Vin
C
R
in
uvlo
Figure 2 - Standard Application Drawing
Figure 1 - Electrical Block Diagram
23
21
9-10
R
ofs-
5-8
Fixed Frequency Voltage
+
-
Mode Controlled PWM
LGA C Series
12
24
Embedded Power for
Business-Critical Continuity
R
13
trim
R
margin
R
ofs+
1-4
22
15
14
Power Good
C
out
+Sense
-Sense
∩∩∩
Rev. 12.07.09
R
L
O
A
D
V
LGA C Series
GND
out
V out
GND
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