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MIC45212-1 の電気的特性と機能

MIC45212-1のメーカーはMicrel Semiconductorです、この部品の機能は「26V 14A DC-to-DC Power Module」です。


製品の詳細 ( Datasheet PDF )

部品番号 MIC45212-1
部品説明 26V 14A DC-to-DC Power Module
メーカ Micrel Semiconductor
ロゴ Micrel Semiconductor ロゴ 




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MIC45212-1 Datasheet, MIC45212-1 PDF,ピン配置, 機能
MIC45212-1/-2
26V/14A DC-to-DC Power Module
General Description
Micrel’s MIC45212 is a synchronous step-down regulator
module, featuring a unique adaptive ON-time control
architecture. The module incorporates a DC-to-DC
controller, power MOSFETs, bootstrap diode, bootstrap
capacitor, and an inductor in a single package; simplifying
the design and layout process for the end user.
This highly-integrated solution expedites system design
and improves product time-to-market. The internal
MOSFETs and inductor are optimized to achieve high
efficiency at a low output voltage. The fully-optimized
design can deliver up to 14A current under a wide input
voltage range of 4.5V to 26V, without requiring additional
cooling.
The MIC45212-1 uses Micrel’s HyperLight Load® (HLL)
while the MIC45212-2 uses Micrel’s Hyper Speed
Control™ architecture, which enables ultra-fast load
transient response, allowing for a reduction of output
capacitance. The MIC45212 offers 1% output accuracy
that can be adjusted from 0.8V to 5.5V with two external
resistors. Additional features include thermal shutdown
protection, input undervoltage lockout, adjustable current
limit, and short circuit protection. The MIC45212 allows for
safe start-up into a pre-biased output.
Datasheet and other support documentation can be found
on Micrel’s web site at: www.micrel.com.
Features
No compensation required
Up to 14A output current
>93% peak efficiency
Output voltage: 0.8V to 5.5V with ±1% accuracy
Adjustable switching frequency from 200kHz to 600kHz
Enable input and open-drain power good output
Hyper Speed Control™ (MIC45212-2) architecture
enables fast transient response
HyperLight Load® (MIC45212-1) improves light load
efficiency
Supports safe startup into pre-biased output
CISPR22, Class B compliant
–40°C to +125°C junction temperature range
Thermal-shutdown protection
Short-circuit protection with hiccup mode
Adjustable current limit
Available in 64-pin 12mm × 12mm × 4mm QFN package
Applications
High power density point-of-load conversion
Servers, routers, networking, and base stations
FPGAs, DSP, and low-voltage ASIC power supplies
Industrial and medical equipment
Typical Application
Efficiency
vs. Output Current (MIC45212-1)
100
5.0VOUT
90
3.3VOUT
80 2.5VOUT
70 1.8VOUT
1.5VOUT
60
1.2VOUT
50 1.0VOUT
40 0.8VOUT
30
20
10 fSW = 600kHz
0 2 4 6 8 10 12 14 16 18 20
OUTPUT CURRENT (A)
Hyper Speed Control is a trademark of Micrel, Inc.
HyperLight Load is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
March 5, 2015
Revision 11

1 Page





MIC45212-1 pdf, ピン配列
Micrel, Inc.
MIC45212
Pin Description
Pin Number
1, 56, 64
2, 3
4
5, 6
7-10, 38-44
12-22
24-36
46, 47
48
49-51
52-54
55
57
58
59
60
61
62, 63
11, 23, 37,45
-
-
Pin Name
GND
PVDD
ILIM
PGND
SW
PVIN
VOUT
RIA
RIB
ANODE
BST
NC
FB
PG
EN
VIN
FREQ
5VDD
KEEPOUT
PVIN ePAD
VOUT ePAD
Pin Function
Analog Ground. Connect bottom feedback resistor to GND. GND and PGND should be
connected together at a low impedance point.
PVDD. Supply input for the internal low-side power MOSFET driver.
Current Limit: Connect a resistor between ILIM and SW to program the current limit.
Power Ground. PGND is the return path for the step-down power module power stage. The
PGND pin connects to the sources of internal low-side power MOSFET, the negative terminals of
input capacitors, and the negative terminals of output capacitors.
The SW pin connects directly to the switch node. Due to the high-speed switching on this pin, the
SW pin should be routed away from sensitive nodes. The SW pin also senses the current by
monitoring the voltage across the low-side MOSFET during OFF time.
Power Input Voltage. Connection to the drain of the internal high side power MOSFET. Connect
an input capacitor from PVIN to PGND.
Power Output Voltage. Connected to the internal inductor. The output capacitor should be
connected from this pin to PGND as close to the module as possible.
Ripple Injection Pin A. Leave floating, no connection.
Ripple Injection Pin B. Connect this pin to FB.
Anode Bootstrap Diode. Anode connection of internal bootstrap diode. This pin should be
connected to the PVDD pin. Pin 51 is depopulated on the part.
Connection to the internal bootstrap circuitry and high side power MOSFET drive circuitry. Leave
floating, no connection.
No Connection.
Feedback: Input to the transconductance amplifier of the control loop. The FB pin is referenced to
0.8V. A resistor divider connecting the feedback to the output is used to set the desired output
voltage. Connect the bottom resistor from FB to GND.
Power Good. Open Drain Output. If used, connect to an external pull-up resistor of at least
10kohm between PG and the external bias voltage.
Enable. A logic signal to enable or disable the step-down regulator module operation. The EN pin
is TTL/CMOS compatible. Logic high = enable, logic low = disable or shutdown. Do not leave
floating.
Internal 5V linear regulator input. A 1μF ceramic capacitor from VIN to GND is required for
decoupling.
Switching Frequency Adjust. Use a resistor divider from VIN to GND to program the switching
frequency. Connecting FREQ to VIN sets freq=600kHz.
Internal +5V linear regulator output. Powered by VIN, 5VDD is the internal supply bus for the
device. In the applications with VIN<+5.5V, 5VDD should be tied to VIN to bypass the linear
regulator.
Depopulated pin positions.
PVIN Exposed PAD. Internally Connected to PVIN pins. Please see PCB Layout
Recommendations section.
VOUT Exposed PAD. Internally Connected to VOUT pins. Please see PCB Layout
Recommendations section.
March 5, 2015
3
Revision 1.1


3Pages


MIC45212-1 電子部品, 半導体
Micrel, Inc.
Typical Characteristics
VIN Operating Supply Current
vs. Input Voltage (MIC45212-1)
1.00
0.80
VOUT = 1.8V
IOUT = 0A
fSW = 600kHz
0.60
0.40
0.20
0.00
4.5
8.8
13.1
17.4
21.7
INPUT VOLTAGE (V)
26
VDD Supply Voltage
vs. Temperature
10
VIN = 12V
8 VOUT = 1.8V
IOUT = 0A
6
4
2
0
-50
-25 0 25 50 75
TEMPERATURE (°C)
100 125
Feedback Voltage
vs. Temperature
1.1
1.0
0.9
0.8
0.7
VIN = 12V
VOUT = 1.8V
IOUT = 0A
0.6
0.5
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
VIN Operating Supply Current
vs. Temperature (MIC45212-2)
100
80
60
VIN = 12V
40 VOUT = 1.8V
IOUT = 0A
20
0
-50
-25 0 25 50 75
TEMPERATURE (°C)
100 125
Enable Threshold
vs. Temperature
2.0
1.6
RISING
1.2
FALLING
0.8
0.4
VIN = 12V
VOUT = 1.8V
0.0
-50
-25 0 25 50 75
TEMPERATURE (°C)
100 125
Output Voltage
vs. Temperature
2.1
2.0
1.9
1.8
1.7
VIN = 12V
VOUT= 1.8V
1.6 IOUT = 0A
1.5
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
MIC45212
VIN Shutdown Current
vs. Input Voltage
50
VEN = 0V
R10 = Open
40
30
20
10
0
4.5
8.8
13.1
17.4
21.7
26
INPUT VOLTAGE (V)
EN Bias Current
vs. Temperature
10
VIN = 12V
VOUT = 1.8V
8 IOUT = 0A
6
4
2
0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
900
800
700
600
500 VIN = 12V
VOUT = 1.8V
IOUT = 2A
400
300
-50
-25 0 25 50 75
TEMPERATURE (°C)
100 125
March 5, 2015
6
Revision 1.1

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
MIC45212-1

26V 14A DC-to-DC Power Module

Micrel Semiconductor
Micrel Semiconductor
MIC45212-2

26V 14A DC-to-DC Power Module

Micrel Semiconductor
Micrel Semiconductor


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