Linear Technology LTM4630EY-1 Demo Manual

Description
Demonstration circuit 2081A-B features the
the high efficiency, high density, dual 18A, switch mode
step-down μModule regulator with ±0.8% total DC output
®
accuracy. The input voltage is from 4.5V to 15V. The output
voltage is programmable from 0.6V to 1.8V. DC2081A-B is
configured as dual-phase, single-output, which can deliver
up to 36A maximum. With the help of external compensa-
tion, ±3% transient accuracy can be achieved with 25%
load step. The board designs with minimum components
to demonstrate this high efficiency, high density μModule.
As explained in the data sheet, output current de-rating is
performance summary
PARAMETER
Input Voltage Range
Output Voltage V
OUT
Maximum Continuous Output Current
Default Operating Frequency
Efficiency
Load Transient
Dual 18A or Single 36A μModule
Regulator with ±0.8% DC and
LTM 4630EY-1,
®
Specifications are at T
CONDITIONS
V = 4.5 ~ 15V, I = 0 ~ 36A (for LTM4630-1A)
IN OUT
De-rating is Necessary for Certain V
Thermal Conditions, See Data Sheet for Detail
V = 5V, V = 1.0V, I = 36A, f
IN OUT OUT
V = 12V, V = 1.0V, I = 0 ~ 9A
IN OUT STEP
DEMO MANUAL DC2081A-B
±3% Transient Accuracy
necessary for certain V
These features and the availability of the LTM4630EY-1
in a compact 16mm × 16mm × 5.01mm BGA package
make it ideal for use in many high-density point-of-load
applications. The LTM4630-1 data sheet must be read
in conjunction with this demo manual for working on or
modifying the demo circuit DC2081A-B.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2081A-B
L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
= 25°C
A
VALUE
4.5V ~ 15V
1.0V ± 0.8% (0.992V ~ 1.008V)
, V and 36A
IN OUT
400kHz
= 400kHz 85.7%, See Figure 2
SW
< 56.3mV
P-P
LTM4630EY-1
, V , and thermal conditions.
IN OUT
, See Figure 3
dc2081a-bfa
1