MIC22602YML TR Micrel Inc, MIC22602YML TR Datasheet

ID BUCK SYNC ADJ 6A 24MLF

MIC22602YML TR

Manufacturer Part Number
MIC22602YML TR
Description
ID BUCK SYNC ADJ 6A 24MLF
Manufacturer
Micrel Inc
Type
Step-Down (Buck), PWM - Voltage Moder
Datasheet
1.MIC22602YML_TR.pdf (24 pages)

Specifications of MIC22602YML TR

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
Adj to 0.7V
Current - Output
6A
Frequency - Switching
1MHz
Voltage - Input
2.6 ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-MLF®, QFN
Voltage - Supply
2.6 V ~ 5.5 V
Frequency-max
1.2MHz
Duty Cycle
100%
Pwm Type
Voltage Mode
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
576-3645-2
MIC22602YML TR
MIC22602YMLTR
General Description
The Micrel MIC22602 is a high efficiency 6A Integrated
switch synchronous buck (step-down) regulator. The
MIC22602 is optimized for highest efficiency, achieving
more than 95% efficiency while still switching at 1MHz
over a broad range. The device works with a small 1µH
inductor and 100µF output capacitor. The ultra-high speed
control loop keeps the output voltage within regulation
even under extreme transient load swings commonly
found in FPGAs and low voltage ASICs. The output
voltage can be adjusted down to 0.7V to address all low
voltage power needs. The MIC22602 offers a full range of
sequencing and tracking options. The EN/DLY pin
combined with the Power Good/POR pin allows multiple
outputs to be sequenced in any way during turn-on and
turn-off. The RC (Ramp Control™) pin allows the device to
be connected to another product in the MIC22xxx and/or
MIC68xxx family, to keep the output voltages within a
certain ∆V on start up.
The MIC22602 is available in a 24-pin 4mm x 4mm MLF
with a junction operating range from –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Typical Application
Ramp Control is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
October 2009
MIC22602 6A 1MHz Synchronous Output Converter
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
®
100
Features
Applications
95
90
85
80
75
70
65
60
55
50
408
• FPGAs, DSP and low voltage ASIC power
• Input voltage range: 2.6V to 5.5V
• Output voltage adjustable down to 0.7V
• Output load current up to 6A
• Full sequencing and tracking capability
• Power on Reset/Power Good output
• Efficiency > 95% across a broad load range
• Ultra fast transient response−Easy RC compensation
• 100% maximum duty cycle
• Fully integrated MOSFET switches
• Hic-cup mode current limiting
• Micropower shutdown
• Thermal shutdown and current limit protection
• 24-pin 4mm x 4mm MLF
• –40°C to +125°C junction temperature range
• High power density point of load conversion
• Servers and routers
• DVD recorders / Blu-Ray players
• Computing peripherals
• Base stations
0
Efficiency Synchronous Buck Regulator
VIN = 5.5V
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Efficiency @ 3.3V
1
OUTPUT CURRENT (A)
1MHz, 6A Integrated Switch High
2
3
4
OUT
5
MIC22602
6
®
Sequencing & Tracking
M9999-102809-A

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MIC22602YML TR Summary of contents

Page 1

... MIC22602 6A 1MHz Synchronous Output Converter Ramp Control is a trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( October 2009 MIC22602 1MHz, 6A Integrated Switch High ...

Page 2

Micrel, Inc. Ordering Information Part Number MIC22602YML ® Note: MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. Pin Configuration Pin Description Pin Number Pin Name 1, 6, 13, 18 PVIN 17 SVIN ...

Page 3

Micrel, Inc. Absolute Maximum Ratings Supply Voltage ( .............................. –0. Output Switch Voltage (V ) ............................. –0. Output Switch Current (I ).......................Internally Limited SW Logic Input Voltage (EN, POR, DLY) ...

Page 4

Micrel, Inc. Typical Characteristics Shutdown Current vs. Temperature 3. TEMPERATURE (°C) Feedback Voltage vs. Temperature 0.701 0.700 0.699 0.698 0.697 V = 3.3V IN 0.696 ...

Page 5

Micrel, Inc. Typical Characteristics (continued) Efficiency @ 1.2V OUT 100 95 2.6VIN 90 3.3VIN 85 5.5VIN OUTPUT CURRENT (A) Bode Plot (V - 3.6V 1.8V) ...

Page 6

Micrel, Inc. Functional Characteristics October 2009 6 MIC22602 M9999-102809-A ...

Page 7

Micrel, Inc. Functional Characteristics (continued) October 2009 7 MIC22602 M9999-102809-A ...

Page 8

Micrel, Inc. Typical Circuits and Waveforms Sequencing Circuit and Waveform Tracking Circuit and Waveform October 2009 8 MIC22602 M9999-102809-A ...

Page 9

Micrel, Inc. Functional Diagram October 2009 Figure 1. MIC22602 Block Diagram 9 MIC22602 M9999-102809-A ...

Page 10

Micrel, Inc. Functional Description PVIN, SVIN PVIN is the input supply to the internal 30mΩ P-Channel Power MOSFET. This should be connected externally to the SVIN pin. The supply voltage range is from 2.6V to 5.5V. A 22µF ceramic is ...

Page 11

Micrel, Inc. Application Information The MIC22602 Synchronous step down regulator IC with a fixed 1 MHz, voltage mode PWM control scheme. The other features include tracking and sequencing control for controlling multiple output power systems, power on ...

Page 12

Micrel, Inc. Figure 2 shows an efficiency curve. The portion, from 0A to 1A, efficiency losses are dominated by quiescent current losses, gate drive and transition losses. In this case, lower supply voltages yield greater efficiency in that they require ...

Page 13

Micrel, Inc. Feedback The MIC22602 provides a feedback pin to adjust the output voltage to the desired level. This pin connects internally to an error amplifier. The error amplifier then compares the voltage at the feedback to the internal 0.7V ...

Page 14

Micrel, Inc. Sequencing & Tracking examples There are four distinct variations which are easily implemented using the MIC22602. The two sequencing variations are Delayed and Windowed. The two tracking variants are Normal and Ratio Metric. The following diagrams illustrate methods ...

Page 15

Micrel, Inc. An alternative method here shows an example & V solution for a DDR memory power supply. Note TT that POR is taken from Vo1 as POR This is because POR is set high when FB ...

Page 16

Micrel, Inc. • Rθ combination of junction to case thermal JA resistance (Rθ ) and Case-to-Ambient thermal JC resistance (Rθ ), since thermal resistance of CA the solder connection from the ePAD to the PCB is negligible; Rθ ...

Page 17

Micrel, Inc. Ripple Measurements To properly measure ripple on either input or output of a switching regulator, a proper ring in tip measurement is required. Standard oscilloscope probes come with a grounding clip long wire with an alligator ...

Page 18

Micrel, Inc. PCB Layout Guideline Warning!!! To minimize EMI and output noise, follow these layout recommendations. PCB Layout is critical to achieve reliable, stable and efficient performance. A ground plane is required to control EMI and minimize the inductance in ...

Page 19

Micrel, Inc. Evaluation Board Schematic J2 GND TP2 22µF 22µ VIN = 3.3V SVIN TP3 J4 N.U. N.U. SHDN N. DELAY ...

Page 20

Micrel, Inc. Bill of Materials Item Part Number C2012X5R0J226M C1, C2, C3, 08056D226MAT C4, C5 GRM21BR60J226ME39L Open(VJ0603Y102KXQCW1BC) C6 Open(GRM188R71H102KA01D) Open(C1608C0G1H102J) VJ0603Y471KXACW1BC C7 C1608X7R1H471M Open(VJ0603Y102KXQCW1BC) C8 Open(GRM188R71H102KA01D) Open(C1608C0G1H102J) GRM1555C1H390JZ01D C9 VJ0402A390KXQCW1BC C3216X5R0J476M C10, C11 GRM31CR60J476ME19 GRM31CC80G476ME19L VJ0402A101KXQCW1BC C12 GRM1555C1H101JZ01D C13 GRM188R71H103KA01D ...

Page 21

Micrel, Inc. PCB Layout Recommendations October 2009 Top Silk Top Layer 21 MIC22602 M9999-102809-A ...

Page 22

Micrel, Inc. October 2009 Mid Layer 1 Mid Layer 2 22 MIC22602 M9999-102809-A ...

Page 23

Micrel, Inc. October 2009 Bottom Silk Bottom Layer 23 MIC22602 M9999-102809-A ...

Page 24

Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. ...

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