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ADP5053 の電気的特性と機能
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ADP5053のメーカーはAnalog Devicesです、この部品の機能は「Integrated Power Solution」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 ADP5053 |
| 部品説明 Integrated Power Solution |
| メーカ Analog Devices |
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Data Sheet
Integrated Power Solution with Quad Buck
Regulators and Supervisory Circuits
ADP5053
FEATURES
Wide input voltage range: 4.5 V to 15.0 V
±1.5% output accuracy over full temperature range
250 kHz to 1.4 MHz adjustable switching frequency
Adjustable/fixed output options via factory fuse
Power regulation
Channel 1 and Channel 2: programmable 1.2 A/2.5 A/4 A
sync buck regulators with low-side FET driver
Channel 3 and Channel 4: 1.2 A sync buck regulators
Single 8 A output (Channel 1 and Channel 2 operated in parallel)
Precision enable with 0.8 V accurate threshold
Active output discharge switch
FPWM or automatic PWM/PSM selection
Frequency synchronization input or output
Optional latch-off protection on OVP/OCP failure
Power-good flag on selected channels
UVLO, OCP, and TSD protection
Open-drain processor reset with external adjustable
threshold monitoring
Watchdog refresh input
Manual reset input
APPLICATIONS
Small cell base stations
FPGA and processor applications
Security and surveillance
Medical applications
GENERAL DESCRIPTION
The ADP5053 combines four high performance buck regulators, a
supervisory circuit, a watchdog timer, and a manual reset in a
48-lead LFCSP package that meets demanding performance and
board space requirements. The device enables direct connection
to high input voltages up to 15.0 V with no preregulators.
Channel 1 and Channel 2 integrate high-sidepower MOSFET and
low-side MOSFET drivers. External NFETs can be used in low-side
power devices to achieve an efficiency optimized solution and
deliver a programmable output current of 1.2 A, 2.5 A, or 4 A.
Combining Channel 1 and Channel 2 in a parallel configuration
can provide a single output with up to 8 A of current.
Channel 3 and Channel 4 integrate both high-side and low-side
MOSFETs to deliver an output current of 1.2 A.
TYPICAL APPLICATION CIRCUIT
C1
4.5V TO 15V
VREG
VDD
C0
PVIN1
C2
COMP1
EN1
SS12
PVIN2
C5
COMP2
EN2
PWRGD
PVIN3
C8
COMP3
EN3
SS34
PVIN4
C11
COMP4
EN4
WDI
MR
ADP5053
INT VREG
100mA
OSCILLATOR
CHANNEL 1
BUCK REGULATOR
(1.2A/2.5A/4A)
VREG
CHANNEL 2
BUCK REGULATOR
(1.2A/2.5A/4A)
VREG
SYNC/MODE
RT
FB1
BST1
SW1
C3
DL1 Q1
PGND RILIM1
DL2 RILIM2
SW2
Q2
BST2
FB2
C6
L1 VOUT1
C4
VOUT2
L2
C7
CHANNEL 3
BUCK REGULATOR
(1.2A)
CHANNEL 4
BUCK REGULATOR
(1.2A)
WATCHDOG
AND RESET
BST3
SW3
C9
FB3
PGND3
BST4
C12
SW4
FB4
PGND4
RSTO
VTH
L3 VOUT3
C10
L4
VREG
VOUT4
C13
VOUTx
EXPOSED PAD
Figure 1.
The switching frequency of the ADP5053 can be programmed
or synchronized to an external clock. The ADP5053 contains a
precision enable pin on each channel for easy power-up sequencing
or adjustable UVLO threshold.
The ADP5053 contains supervisory circuits that monitor the
voltage level. The watchdog timer can generate a reset if the
WDI pin is not toggled within a preset timeout period. Processor
reset mode or system power on/off switch mode can be selected
for manual reset functionality.
Table 1. Family Models
Model
Channels
ADP5050 Four bucks, one LDO
ADP5051 Four bucks, supervisory
ADP5052 Four bucks, one LDO
I2C Package
Yes 48-Lead LFCSP
Yes 48-Lead LFCSP
No 48-Lead LFCSP
ADP5053 Four bucks, supervisory
ADP5054 Four high current bucks
No 48-Lead LFCSP
No 48-Lead LFCSP
Rev. B
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property oftheir respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 78 1.32 9.47 00 ©2013–2016 Analog Devices, Inc. All rights reserved.
Technica l Support
www.analog.com
1 Page
ADP5053
Data Sheet
TABLE OF CONTENTS
Features .....................................................................................1
Applications...............................................................................1
Typical Application Circuit........................................................1
General Description ..................................................................1
Revision History ........................................................................2
Detailed Functional Block Diagram ..........................................3
Specifications.............................................................................4
Buck Regulator Specifications................................................5
Supervisory Specifications.....................................................7
Absolute Maximum Ratings......................................................8
Thermal Resistance................................................................8
ESD Caution ..........................................................................8
Pin Configuration and Function Descriptions...........................9
Typical Performance Characteristics .......................................11
Theory of Operation................................................................16
Buck Regulator Operational Modes.....................................16
Adjustable and Fixed Output Voltages.................................16
Internal Regulators (VREG and VDD)................................16
Separate Supply Applications...............................................17
Low-Side Device Selection...................................................17
Bootstrap Circuitry ..............................................................17
Active Output Discharge Switch ..........................................17
Precision Enabling ...............................................................17
Oscillator..............................................................................17
Synchronization Input/Output.............................................18
Soft Start ..............................................................................18
Parallel Operation ................................................................19
Startup with Precharged Output ..........................................19
Current-Limit Protection.....................................................19
Frequency Foldback.............................................................20
Hiccup Protection................................................................20
Latch-Off Protection............................................................20
Undervoltage Lockout (UVLO)...........................................21
Power-Good Function .........................................................21
Thermal Shutdown .............................................................. 21
Supervisory Circuit.............................................................. 21
Applications Information ........................................................ 23
ADIsimPower Design Tool.................................................. 23
Programming the Adjustable Output Voltage...................... 23
Voltage Conversion Limitations........................................... 23
Current-Limit Setting.......................................................... 23
Soft Start Setting.................................................................. 24
Inductor Selection ............................................................... 24
Output Capacitor Selection ................................................. 24
Input Capacitor Selection .................................................... 25
Low-Side Power Device Selection........................................ 25
Programming the UVLO Input ........................................... 25
Compensation Components Design.................................... 26
Power Dissipation................................................................ 26
Junction Temperature.......................................................... 27
Design Example....................................................................... 28
Setting the Switching Frequency.......................................... 28
Setting the Output Voltage................................................... 28
Setting the Current Limit..................................................... 28
Selecting the Inductor.......................................................... 28
Selecting the Output Capacitor............................................ 29
Selecting the Low-Side MOSFET......................................... 29
Designing the Compensation Network................................ 29
Selecting the Soft Start Time................................................ 29
Selecting the Input Capacitor............................................... 29
Recommended External Components................................. 30
Circuit Board Layout Recommendations................................ 31
Typical Application Circuits.................................................... 32
Factory Default Options...................................................... 35
Outline Dimensions................................................................ 36
Ordering Guide ................................................................... 36
REVISION HISTORY
10/2016—Rev. A to Rev. B
Deleted Factory Programmable Options Section and Table 16 to
Table 30; Renumbered Sequentially.........................................33
Updated Outline Dimensions..................................................34
9/2015—Rev. 0 to Rev. A
Changes to Table 1..................................................................... 1
11/2013—Revision 0: Initial Version
Rev. B | Page 2 of 36
3Pages
Data Sheet
ADP5053
BUCK REGULATOR SPECIFICATIONS
VIN = 12 V, VVREG = 5.1 V, fSW = 600 kHz for all channels, TJ = −40°C to +125°C for minimum and maximum specifications, and TA = 25°C
for typical specifications, unless otherwise noted.
Table 3.
Parameter
CHANNEL 1 SYNC BUCK REGULATOR
FB1 Pin
Fixed Output Options
Adjustable Feedback Voltage
Feedback Voltage Accuracy
Symbol
VOUT1
VFB1
VFB1 (DEFAULT)
Feedback Bias Current
SW1 Pin
High-Side Power FET On Resistance
Current-Limit Threshold
IFB1
RDSON (1H)
ITH (ILIM1)
Minimum On Time
Minimum Off Time
Low-Side Driver, DL1 Pin
Rising Time
Falling Time
Sourcing Resistor
Sinking Resistor
Error Amplifier (EA), COMP1 Pin
EA Transconductance
Soft Start
Soft Start Time
Programmable Soft Start Range
Hiccup Time
COUT Discharge Switch On Resistance
CHANNEL 2 SYNC BUCK REGULATOR
FB2 Pin
Fixed Output Options
Adjustable Feedback Voltage
Feedback Voltage Accuracy
tMIN_ON1
tMIN_OFF1
tRISING1
tFALLING1
tSOURCING1
tSINKING1
gm1
tSS1
tHICCUP1
RDIS1
VOUT2
VFB2
VFB2 (DEFAULT)
Feedback Bias Current
SW2 Pin
High-Side Power FET On Resistance
Current-Limit Threshold
IFB2
RDSON (2H)
ITH (ILIM2)
Minimum On Time
Minimum Off Time
Low-Side Driver, DL2 Pin
Rising Time
Falling Time
Sourcing Resistor
Sinking Resistor
tMIN_ON2
tMIN_OFF2
tRISING2
tFALLING2
tSOURCING2
tSINKING2
Min
0.85
−0.55
−1.25
−1.5
3.50
1.91
4.95
310
2.0
3.3
−0.55
−1.25
−1.5
3.50
1.91
4.95
Typ Max
0.800
1.60
+0.55
+1.0
+1.5
0.1
100
4.4
2.63
6.44
117
1/9 × tSW
5.28
3.08
7.48
155
20
3.4
10
0.95
470 620
2.0
7 × tSS1
250
8.0
0.800
5.0
+0.55
+1.0
+1.5
0.1
110
4.4
2.63
6.44
117
1/9 × tSW
5.28
3.08
7.48
155
20
3.4
10
0.95
Unit Test Conditions/Comments
V Fuse trim
V
% TJ = 25°C
% 0°C ≤ TJ ≤ 85°C
% −40°C ≤ TJ ≤ +125°C
µA Adjustable voltage
mΩ Pin-to-pin measurement
A RILIM1 = floating
A RILIM1 = 47 kΩ
A RILIM1 = 22 kΩ
ns fSW = 250 kHz to 1.4 MHz
ns fSW = 250 kHz to 1.4 MHz
ns CISS = 1.2 nF
ns CISS = 1.2 nF
Ω
Ω
µS
ms SS12 connected to VREG
ms
ms
Ω
V Fuse trim
V
% TJ = 25°C
% 0°C ≤ TJ ≤ 85°C
% −40°C ≤ TJ ≤ +125°C
µA Adjustable voltage
mΩ Pin-to-pin measurement
A RILIM2 = floating
A RILIM2 = 47 kΩ
A RILIM2 = 22 kΩ
ns fSW = 250 kHz to 1.4 MHz
ns fSW = 250 kHz to 1.4 MHz
ns CISS = 1.2 nF
ns CISS = 1.2 nF
Ω
Ω
Rev. B | Page 5 of 36
6 Page
合計 : 30 ページ |
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| 部品番号 | 部品説明 | メーカ |
| ADP5050 | 5-Channel Integrated Power Solution | Analog Devices |
| ADP5051 | Integrated Power Solution | Analog Devices |
| ADP5052 | 5-Channel Integrated Power Solution | Analog Devices |
| ADP5053 | Integrated Power Solution | Analog Devices |