MIC26903YJL EV Micrel, MIC26903YJL EV Datasheet

no-image

MIC26903YJL EV

Manufacturer Part Number
MIC26903YJL EV
Description
Power Management IC Development Tools 28V/9A DC-DC Buck Regulator w/ HLL - Evaluation Board
Manufacturer
Micrel
Type
DC/DC Converters, Regulators & Controllersr
Datasheet
1.MIC26903YJL_EV.pdf (9 pages)

Specifications of MIC26903YJL EV

Product
Evaluation Boards
Tool Is For Evaluation Of
MIC26903
Input Voltage
4.5 V to 28 V
Output Voltage
0.9 V, 1 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V
Description/function
Evaluation Board
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Output Current
9 A
For Use With
MIC26903
General Description
The MIC26903 DC-DC regulator operates ov
supply range of 4.5V to 28V, and provides a regu
at up to 9A of outpu
to 0.8V with a typical accuracy of ±1%, and
operates at a switching frequency of 600kHz. T
frequency remains fairly constant, with chang
voltage and output load.
Micrel’s Hyper Light Load™ architecture provide
high-efficiency and ultra-fast transient response a
Speed Control™ architecture under medium to h
but also maintains high efficiency under light loa
by transitioning to variable frequency, discontin
operation.
The MIC26903 utilizes an adaptive
architecture. An undervoltage lockout feature is
ensure proper operation und
internal soft-sta
current. Foldback current limit and “hiccup” mode
protection and thermal shutdown ensures protec
during fault conditions.
Note: This evaluatio
Datasheet an
Micrel’s web site at: www.micrel.com.
Requirements
The MIC26903 provides a 5V regulated outp
voltage V
VDD should be tied to PVIN pins to bypass the internal
linear regulator by a jumper. The output load can either be
an active or passive load.
Precautions
The evaluation board does not have reverse polarity
protection. Applying a negative voltage to the V
may damage the device. In addition, the maximum V
operating voltage of the MIC26903 evaluation board is
28V. Exceeding 29V on VIN could damage the device.
Hyper Speed Control and Hyper Speed Control are trademarks of Micrel, Inc.
MLF and MicroLead Frame are registered trademark of Amkor Technology, Inc.
July 2011
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
IN
ranging from 5.5V to 28V. Wh
d supporting documentation can b
rt feature is provided to reduce the inrush
t current. The output voltage i
n board is for 9A applications
er power-sag
T
ON
en V
conditions. An
ripple control
tio
he switching
er an input
d conditions
s adjustable
ut for input
es in input
lated output
uous mode
s the same
s the Hyper
eavy loads,
provided to
sho
e fou
the device
IN
n of the IC
IN
.
terminal
rt-circuit
< 5.5V,
nd on
IN
Getting Started
1. Connect an external supp
2. Connect the load to the V
3. Enabl
Ordering Information
408
Part Number
MIC26903YJL EV
Synchronous DC-DC Buck Regulator
) 944-0800 • fax + 1 (408) 474-1000 •
Apply the desired input voltag
terminals of the evaluation
attention to polarity and supp
may be placed between the
terminal to the evaluation
supply voltage is monitored a
ammeter and/or power lead re
voltage supplied to the input.
The load can be either passiv
in an electronic load). An a
between the load and the V
the output voltage is monitor
V
3.3V, or 5.0V by a jumper.
needed, it ca
resistors. See “Output Voltage” section.
evaluati
when V
the MIC26
pin to ground. A connection on the board provides
easy access to the enable pin.
MIC26903 Evaluation Board
OUT
can be set to 0.9V, 1.0V
28V, 9A HyperLight Load
e the MIC26903. The EN pin is provided on the
on board. The
DD
exceeds the UVL
903 m
SuperSwitcher IIG™
n be adjusted by changing the feedback
ay be turned off by shorting the EN
9A HLL DC-DC Regulator Evaluation
output of the MIC26903 turns on
OUT
O threshold. The output of
OUT
Description
board. Ensure that the
ly to the V
input supply and the V
e (resistive) or active (as
ed at the V
, 1.2V, 1.5V, 1.8V, 2.5V,
mmeter can be placed
If a different voltage is
http://www.micrel.com
e to the V
ly voltage. An ammeter
sistance can reduce the
and ground terminals.
t the V
board, paying careful
Board
terminal. Ensure that
M9999-071511-A
IN
IN
terminal. The
®
OUT
IN
and ground
terminal.
terminal.
IN

Related parts for MIC26903YJL EV

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MIC26903
Part Number:
MIC26903
Description:
28V, 9A Hyper Light Load Synchronous DC/DC Buck Regulator
Manufacturer:
MICREL [Micrel Semiconductor]
Datasheet:
MIC26903.pdf (31 pages)
MIC2776N-BM5
Part Number:
MIC2776N-BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC2776N-BM5.pdf (8 pages)
MIC5203-3.0BM4
Part Number:
MIC5203-3.0BM4
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5203-3.0BM4.pdf (7 pages)
MIC5203-3.3BM4
Part Number:
MIC5203-3.3BM4
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5203-3.3BM4.pdf (7 pages)
MIC5203-3.6BM4
Part Number:
MIC5203-3.6BM4
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5203-3.6BM4.pdf (7 pages)
MIC5205-2.85BM5
Part Number:
MIC5205-2.85BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5205-2.85BM5.pdf (12 pages)
MIC5205-3.0BM5
Part Number:
MIC5205-3.0BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5205-3.0BM5.pdf (12 pages)
MIC5205-3.6BM5
Part Number:
MIC5205-3.6BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5205-3.6BM5.pdf (12 pages)
MIC5205-4.0BM5
Part Number:
MIC5205-4.0BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5205-4.0BM5.pdf (12 pages)
MIC5205-5.0BM5
Part Number:
MIC5205-5.0BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5205-5.0BM5.pdf (12 pages)
MIC5205BM5
Part Number:
MIC5205BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5205BM5.pdf (12 pages)
MIC5207-3.0BM5
Part Number:
MIC5207-3.0BM5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5207-3.0BM5.pdf (12 pages)
MIC5213-2.8BC5
Part Number:
MIC5213-2.8BC5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5213-2.8BC5.pdf (8 pages)
MIC5213-3.0BC5
Part Number:
MIC5213-3.0BC5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5213-3.0BC5.pdf (8 pages)
MIC5213-3.3BC5
Part Number:
MIC5213-3.3BC5
Description:
Manufacturer:
Micrel Inc
Datasheet:
MIC5213-3.3BC5.pdf (8 pages)

MIC26903YJL EV Summary of contents

Page 1

... A connection on the board provides easy access to the enable pin. ut for input Ordering Information en V < 5.5V, IN Part Number MIC26903YJL EV terminal IN IN 408 ) 944-0800 • fax + 1 (408) 474-1000 • 28V, 9A HyperLight Load SuperSwitcher IIG™ the the V board, paying careful ly voltage ...

Page 2

... Micrel, Inc. Output Voltage The output voltage on the MIC26903 evaluat adjustable set by adjusting the (R4 and one of R5, R6, R7, R8, R9, R10, R11, o and can be calculated as follows as an example: = × REF OUT where V = 0.8V. REF The output voltage above is set at the fa output, but it can easily be changed by moving the jumper to a respective position to get an indicated voltage on the board ...

Page 3

... Micrel, Inc. Evaluation Board Performance Efficiency ( vs. Output Cu rren t 100 95 90 EFFICIENCY (%) OUTPUT CURRENT (A) Thermal Derating* vs. Ambient Temperature 1.8, 2.5, 3.3V 2 OUT 0 -50 - 100 AMBIENT TEMPERATURE (°C) Die Temperature* : The temperature measurement was taken at the hottest point on the MIC26903 case mounted square inch 4 layer, 0.62”, FR-4 PCB with 2oz finish copper weight per layer, see Thermal Measurement section ...

Page 4

... Micrel, Inc. Evaluation Board Schematic July 2011 Schematic of MIC26903 Evaluation Board (J11, R13, R15 are for testing purposes) 4 MIC26903 Evaluation Board M9999-071511-A ...

Page 5

... Micrel, Inc. Bil l of Mat erials Item Part Num ber C1 Open 12105C475KAZ2A C2, C3 GRM32ER71H475KA88L C3225X7R1H475K C13, C15 Open 12106D107MAT2A C4, C5 GRM32ER60J107ME20L C3225X5R0J107M 06035C104KAT2A C6, C7, C10 GRM188R71H104KA93D C1608X7R1H1 0603ZC105KAT2A C8 GRM188R71A105KA61D C1608X7R 1A105K 0603Z 22 D 5KAT2A C9 GRM188R61A225KE34D C1608X5R1A225K 06035C472KAZ2A C12 GRM188R71H47 C1608X7R1H C14 ...

Page 6

... Notes: 1. AVX: www.avx.com 2. Murata: www.murata. com 3. TDK: www.tdk.com 4. EPCOS: www.epcos.com 5. MCC: www.mcc.com 6. Diode Inc.: www.diodes.com 7. Vishay: www.vishay.com 8. Cooper Bussmann: www.cooperbussmann.com 9. Micrel, Inc.: www.micrel.com July 2011 ) Man ufacturer Descrip ( ishay Dale 0Ω Resis (7) Vishay Dale 49.9Ω Resistor, Size 0603, 1% (7) KEA V ishay Dale 1.21Ω ...

Page 7

... Micrel, Inc. PCB Layout Recommendations July 2011 Top Layer Mid-Layer 1 (Ground Plane) 7 MIC26903 Evaluation Board M9999-071511-A ...

Page 8

... Micrel, Inc. PCB Layout Recommendations (Continued) July 2011 Mid-Layer 2 Bottom Layer 8 MIC26903 Evaluation Board M9999-071511-A ...

Page 9

... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully ...

Related keywords