Instrukcja obsługi Microchip MIC23450-AAAYML
Microchip
nieskategoryzowany
MIC23450-AAAYML
Przeczytaj poniżej 📖 instrukcję obsługi w języku polskim dla Microchip MIC23450-AAAYML (9 stron) w kategorii nieskategoryzowany. Ta instrukcja była pomocna dla 4 osób i została oceniona przez 2.5 użytkowników na średnio 4.6 gwiazdek
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MIC23450 Evaluation Board
3 , , MHz PWM 2A Triple Buck Regulator
with HyperLight Load
®
and Power Good
HyperLight Load is a trademark of Micrel, Inc.registered
MLF and LeadFrame are registered trademark Amkor Technology Inc.Micro
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( ) 944 0800 • fax + 1 (408) 474 1000 • 408 - - http://www.micrel.com
February 4, 2013
Revision 1.0
General Description
This board allows the customer to evaluate the
MIC23 output 3MHz450, a fully integrated, triple- - , 2A,
switching regulator that features HyperLight Load ® mode
and ood 450 power g (PG) output indicator . The MIC23s
is highly efficient throughout the output current range,
drawing just 23 A of quiescent cu for each channel µ rrent
in operation. The tiny 5mm x 5mm MLF® package saves
board space and requires few external components. The
MIC23450 provides 2.5% accuracy and± output voltage
each channel typically in less than 10 to a responds µs
load transient with output voltage ripple.as low as 5mV
Requirements
This board needs a single 40W bench power source,
adjustable from to 5.5 . The loads can 2.7V V be either
active (electronic load) or passive (re and must be sistor),
able to to dissipate 20W. It is ideal, but not essential,
have an oscilloscope available to view the circuit
waveforms. require oltage The simplest tests vtwo
meters to measure input and output voltage. Efficiency
measurements require oltage for a single channel vtwo
meters and meterstwo am to prevent errors caused by
measurement inaccuracies.
Precautions
There is no reverse input protection on this board. Be
careful make when connecting the input source to sure
correct polarity is observed.
Getting Started
1. Connect an external supply to the VIN ) (J1
terminal and (JGND 3).
With the output of the power supply disabled, set its
voltage to the desired input test voltage (2.7V ≤ VIN ≤
5.5V). An ammeter may be placed between the input
supply and the VIN ( ) . J1 terminal Be sure to monitor
the supply voltage at the VIN ( ) J1 terminal, as the
ammeter and/or power lead resistance can reduce
the voltage supplied to the device.
2. Connect a load Vto the OUT terminals (J2, J5, J7)
and ground (J4, J6, J8) .terminals
The load can be either active passive (resistive) or
active (electronic load). An ammeter may be placed
between the load and the output terminals s. Make
sure the output voltage is monitored at VOUT1, VOUT2
and VOUT3 ( ) s. J2, J5 and J7 terminal The board has
multiple 2- s ) pin connector (JP1, JP2 and JP3 to
allow for output voltage monitoring of VOUT1
, VOUT2
and VOUT3 . respectively
3. Enable the Supply to MIC23450.
The MIC23450 evaluation up board has a pull-
resistor to VIN for each channel By default, . each
output voltage bled when the input supply of is ena
> V 2.7 is applied. Each channel 1, 2 or 3 can be
disabled by the Eapplying 0.4 a voltage below V to N
terminal or J14 respectivelyJ10, J12 .
4. Power Good.
The board provides a test point power ood g (J9,
J11, and J13 to monitor for ) the power good function
each channel The of the s 1, 2, and 3 respectively.
power good output high (goes VOUT) nominally 62 µs
after reaches the output voltage 90% of its nominal
voltage.
Ordering Information
Part Number Description
MIC23 YML450-AAA EV 3MHz, PWM,
2A Triple Buck
R egulator Evaluation Board
Specyfikacje produktu
| Marka: | Microchip |
| Kategoria: | nieskategoryzowany |
| Model: | MIC23450-AAAYML |
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