AS3729-BWLT [AMSCO]
5A Power Stage;
| 型号： | AS3729-BWLT |
| 厂家： | 
AMS(艾迈斯) |
| 描述： | 5A Power Stage |
| 文件： | 总19页 (文件大小：468K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AS3729
5A Power Stage
The AS3729 is a companion power stage, intended to be used
with AS372x products. It cannot be used without a DCDC
controller. It contains the power FETs for 2 phases and is capable
to handle output currents of 2.5A per phase.
General Description
Ordering Information and Content Guide appear at end of
datasheet.
Key Benefits & Features
The benefits and features of AS3729, 5A Power Stage are listed
below:
Figure 1:
Added Value of Using AS3729
Benefits
Features
Support for single or dual phase operation
• 2 phases with separate control input
• Separate power NMOS & PMOS for 2.5A per phase
• Separate coil current feedback per phase
• Stand-alone zero-crossing operation
2 x 2.5A output stages are running on 3MHz
Over-temperature protection
Cost effective, small package
• Integrated temperature monitoring
• 16-pin WL-CSP: 1.615mm x 1.615mm, 0.4mm pitch
Applications
The device is a high current dual-phase DCDC and ideal for:
• Mobile phones
• Tablets
• Notebooks
ams Datasheet
Page 1
[v1-24] 2015-Aug-13
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Block Diagram
The functional blocks of this device for reference are
shown below:
Figure 2:
AS3729 Block Diagram
AS3729 Block Diagram: This figure shows the block diagram of the DCDC controller inside the Main PMIC and
the AS3729 Power Stage with all relevant system components.
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AS3729 − Pin Assignment
Pin Assignment
Figure 3:
Pin Diagram
Figure 4:
Pin Description
Pin Number
A1
Pin Name
CTRL1
TEMP
AGND
CTRL2
VSUP
VSUP
LX1
Description
Control IO for phase 1
B1
ON/OFF control and temperature feedback
Analog ground
C1
D1
Control IO for phase 2
A2, B2
C2, D2
A3, B3
C3, D3
A4, B4
C4, D4
Phase 1 positive supply terminal
Phase 2 positive supply terminal
Phase 1 switching output to coil
Phase 2 switching output to coil
Phase 1 negative supply terminal
Phase 2 negative supply terminal
LX2
PVSS
PVSS
ams Datasheet
[v1-24] 2015-Aug-13
Page 3
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AS3729 − Absolute Maximum Ratings
Stresses beyond those listed underAbsolute Maximum Ratings
may cause permanent damage to the device. These are stress
ratings only. Functional operation of the device at these or any
other conditions beyond those indicated under Electrical
Characteristicsis not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device
reliability.
Absolute Maximum Ratings
Figure 5:
Absolute Maximum Ratings
Symbol
Parameter
Min
Max Units
Comments
Electrical Parameters
Supply voltage to ground 5V
pins
Applicable for pins VSUPx, LXx,
CTRLx
-0.5
-0.5
-0.5
-100
7.0
5.0
0.5
100
V
V
Supply voltage to ground 3V
pins
Applicable for pin TEMP
Applicable for pins PVSS, AGND
Norm: JEDEC JESD78
Voltage difference between
ground terminals
V
Input current
(latch-up immunity)
mA
Continuous Power Dissipation (T = 70°C)
A
(1)
P
(R
for WL-CSP16 package
~ 55K/W)
T
P
Continuous power dissipation
Electrostatic discharge HBM
1
W
T
THJA
Electrostatic Discharge
ESD
1.5
kV
Norm: JEDEC JESD22-A114F
Temperature Ranges and Storage Conditions
T
Operating temperature
-40
85
°C
A
Junction to ambient thermal
resistance
R
R
typical 55K/W
THJA
°C/W
THJA
T
Junction temperature
125
125
260
°C
°C
°C
J
T
Storage temperature range
Package body temperature
-55
5
Strg
(2)
T
Norm IPC/JEDEC J-STD-020
BODY
Relative humidity
(non-condensing)
RH
85
%
NC
Represents an unlimited floor
life time
MSL
Moisture sensitivity level
1
Note(s) and/or Footnote(s):
1. Depending on actual PCB layout and PCB used.
2. The reflow peak soldering temperature (body temperature) is specified according IPC/JEDEC J-STD-020 “Moisture/Reflow Sensitivity
Classification for Nonhermetic Solid State Surface Mount Devices”.
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AS3729 − Electrical Characteristics
Typical values are at VSUP = 3.8V, T = 25°C (unless otherwise
A
Electrical Characteristics
specified). All limits are guaranteed. The parameters with Min
and Max values are guaranteed with production tests or SQC
(Statistical Quality Control) methods.
Figure 6:
Step Down DCDC Power Stage Parameters
Symbol
Parameter
Comments
Min
2.5
0
Typ
Max
5.5
5.5
3.6
4
Units
Pin VSUPx
V
V
V
A
A
V
Input voltage
Pin CTRLx
IN
Pin TEMP
0
I
Peak coil current limit
Load current
Single phase
LIMIT
Continuous load current
Peak load current
0
2.5
I
LOAD
(1)
3
(2)
(2)
R
Single phase
Single phase
40
30
70
50
mΩ
mΩ
P-switch On resistance
N-switch On resistance
PMOS
R
NMOS
Supplied by DCDC
controller
f
Switching frequency
2.7
6.2
21
3
MHz
mA
μA
SW
TEMP pin high, force
PWM mode active
I
Quiescent current PWM
Quiescent current LP
Q_force_PWM
TEMP pin high, low
power mode active
I
Q_low_power
I
Power-Off current
active discharge
No current into pin TEMP
Single phase
1
μA
Ω
power_off
R
16
discharge
Note(s) and/or Footnote(s):
1. Maximum value only for pulsed peak current.
2. MOS transistor only without package parasitics.
ams Datasheet
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[v1-24] 2015-Aug-13
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AS3729 − Parameters
Figure 7:
Step Down DCDC Power Stage External Components
Symbol
Parameter
Min
Typ
Max
Units
Note
External Components Per Phase
Ceramic X5R or X7R, high
performance
40
47
μF
C
Output capacitor
FB
Ceramic X5R or X7R, cost
optimized
20
6
22
10
μF
μF
μH
C
Input capacitor
Inductor
Ceramic X5R or X7R
3A rated, 3MHz
VSUP
L
0.3
0.47
operation, low R
ON
Parameters
Figure 8:
3.7V Efficiency vs. Output Current Combined Mode
AS3729 Step Down DCDC: Shows the
Efficiency of AS3729 with VSUP = 3.7V,
1.5MHz operation, T = 25°C and
A
Coilcraft XAL5030-601MEB coil
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amsDatasheet
[v1-24] 2015-Aug-13
AS3729 − Parameters
Figure 9:
3.7V Efficiency vs. Output Current Coil Comparison
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 for different
coils @ 1.0V with VSUP=3.7V, 1.5MHz
operation and T =25°C.
A
Figure 10:
3.7V Efficiency vs. Output Current Coil Comparison
Combined Mode
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 for different
coils @ 1.0V with VSUP=3.7V, 1.5MHz
operation and T =25°C.
A
ams Datasheet
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AS3729 − Parameters
Figure 11:
5.0V Efficiency vs. Output Current Coil Comparison
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 for different
coils @ 1.0V with VSUP=5.0V, 1.5MHz
operation and T =25°C.
A
Figure 12:
5.0V Efficiency vs. Output Current Coil Comparison
Combined Mode
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 for different
coils @ 1.0V with VSUP=5.0V, 1.5MHz
operation and T =25°C.
A
Page 8
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AS3729 − Parameters
Figure 13:
3.7V Efficiency vs. Output Current XFL4012 Mode
Comparison
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 in dual,
combined and single phase mode @
1.0V with VSUP=3.7V, 1.5MHz operation,
T =25°C and Coilcraft XFL4012-471MEB
A
coil.
Figure 14:
3.7V Efficiency vs. Output Current SPM4012T Mode
Comparison
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 in dual,
combined and single phase mode @
1.0V with VSUP=3.7V, 1.5MHz operation,
T =25°C and TDK SPM4012T-R47M coil.
A
ams Datasheet
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AS3729 − Parameters
Figure 15:
3.7V Efficiency vs. Output Current TFM252010 Mode
Comparison
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 in dual,
combined and single phase mode @
1.0V with VSUP=3.7V, 1.5MHz operation,
T =25°C and TDK TFM252010A-R47M
A
coil.
Figure 16:
3.7V Efficiency vs. Output Current XFL4012 Frequency
Comparison
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 in dual phase
mode @ 1.0V with VSUP=3.7V, T =25°C
A
and Coilcraft XFL4012-471MEB coil.
Page 10
amsDatasheet
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[v1-24] 2015-Aug-13
AS3729 − Parameters
Figure 17:
3.7V Efficiency vs. Output Current LQMHPN Frequency
Comparison
AS3729 Step Down DCDC: Shows the
Efficiency of the AS3729 in dual phase
mode @ 1.0V with VSUP=3.7V, T =25°C
A
and Murata LQM2HPN1R0MJH coil.
ams Datasheet
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AS3729 − Application Information
Application Information
Figure 18:
Typical Application Circuit
AS3729
VSUP
10uF
Vout (0.6-1.5V@6A)
DVM, 10mV steps
LX1
LX2
0.47uH
PVSS
PVSS
TEMP_SDx
TEMP
CTRL1
CTRL2
22uF
DCDC
CTRL1_SDx
0.6 – 1.5V
CTRL2_SDx
6A
3MHz
FB_SDx
FB_SDx
22uF
0.47uH
VSUP
10uF
AS3729 Typical Application: This figure shows the connection of the DCDC controller and the AS3729 Power
Stage.
Figure 19:
Layout Guidelines
Layout Guidelines: This figure shows
the recommended layout and
placement of the external components
for the 2-phase AS3729 Power Stage
L1
CIN1
COUT1
CTRL1
TEMP
AS3729
XXXX
Vout
GND
CTRL2
COUT2
CIN2
L2
FB
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AS3729 − Package Drawings & Markings
Package Drawings & Markings
Figure 20:
16-pin WL-CSP with 0.4mm Pitch
Top through view
Bottom view (ball side)
AS3729
XXXX
Note(s) and/or Footnote(s):
1. ccc Coplanarity.
2. All dimensions in μm.
Figure 21:
Package Code
XXXX
Tracecode
ams Datasheet
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AS3729 − Ordering & Contact Information
Ordering & Contact Information
Figure 22:
Ordering Information
Ordering Code
Description
Delivery Form
Package
Delivery Quantity
Power stage for
multi-phase DCDC
AS3729-BWLT
Tape & Reel
16-pin WL-CSP
16-pin WL-CSP
12000
Power stage for
multi-phase DCDC
AS3729-BWLM
Tape & Reel
500
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Headquarters
ams AG
Tobelbaderstrasse 30
8141 Unterpremstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com
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amsDatasheet
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AS3729 − RoHS Compliant & ams Green Statement
RoHS: The term RoHS compliant means that ams AG products
fully comply with current RoHS directives. Our semiconductor
products do not contain any chemicals for all 6 substance
categories, including the requirement that lead not exceed
0.1% by weight in homogeneous materials. Where designed to
be soldered at high temperatures, RoHS compliant products are
suitable for use in specified lead-free processes.
RoHS Compliant & ams Green
Statement
ams Green (RoHS compliant and no Sb/Br): ams Green
defines that in addition to RoHS compliance, our products are
free of Bromine (Br) and Antimony (Sb) based flame retardants
(Br or Sb do not exceed 0.1% by weight in homogeneous
material).
Important Information: The information provided in this
statement represents ams AG knowledge and belief as of the
date that it is provided. ams AG bases its knowledge and belief
on information provided by third parties, and makes no
representation or warranty as to the accuracy of such
information. Efforts are underway to better integrate
information from third parties. ams AG has taken and continues
to take reasonable steps to provide representative and accurate
information but may not have conducted destructive testing or
chemical analysis on incoming materials and chemicals. ams AG
and ams AG suppliers consider certain information to be
proprietary, and thus CAS numbers and other limited
information may not be available for release.
ams Datasheet
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AS3729 − Copyrights & Disclaimer
Copyright ams AG, Tobelbader Strasse 30, 8141
Copyrights & Disclaimer
Unterpremstaetten, Austria-Europe. Trademarks Registered. All
rights reserved. The material herein may not be reproduced,
adapted, merged, translated, stored, or used without the prior
written consent of the copyright owner.
Devices sold by ams AG are covered by the warranty and patent
indemnification provisions appearing in its General Terms of
Trade. ams AG makes no warranty, express, statutory, implied,
or by description regarding the information set forth herein.
ams AG reserves the right to change specifications and prices
at any time and without notice. Therefore, prior to designing
this product into a system, it is necessary to check with ams AG
for current information. This product is intended for use in
commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or
high reliability applications, such as military, medical
life-support or life-sustaining equipment are specifically not
recommended without additional processing by ams AG for
each application. This product is provided by ams AG “AS IS”
and any express or implied warranties, including, but not
limited to the implied warranties of merchantability and fitness
for a particular purpose are disclaimed.
ams AG shall not be liable to recipient or any third party for any
damages, including but not limited to personal injury, property
damage, loss of profits, loss of use, interruption of business or
indirect, special, incidental or consequential damages, of any
kind, in connection with or arising out of the furnishing,
performance or use of the technical data herein. No obligation
or liability to recipient or any third party shall arise or flow out
of ams AG rendering of technical or other services.
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AS3729 − Document Status
Document Status
Document Status
Product Status
Definition
Information in this datasheet is based on product ideas in
the planning phase of development. All specifications are
design goals without any warranty and are subject to
change without notice
Product Preview
Pre-Development
Information in this datasheet is based on products in the
design, validation or qualification phase of development.
The performance and parameters shown in this document
are preliminary without any warranty and are subject to
change without notice
Preliminary Datasheet
Datasheet
Pre-Production
Production
Information in this datasheet is based on products in
ramp-up to full production or full production which
conform to specifications in accordance with the terms of
ams AG standard warranty as given in the General Terms of
Trade
Information in this datasheet is based on products which
conform to specifications in accordance with the terms of
ams AG standard warranty as given in the General Terms of
Trade, but these products have been superseded and
should not be used for new designs
Datasheet (discontinued)
Discontinued
ams Datasheet
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[v1-24] 2015-Aug-13
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AS3729 − Revision Information
Revision Information
Changes from 1-22 (2013-Aug) to current revision 1-24 (2015-Aug-13)
1-22 (2013-Aug) to 1-23 (2015-Aug-11)
Content was updated to the latest ams design
Updated Figure 5
Page
4
5
Updated Figure 6
Updated Figure 7
6
Updated titles of figures 8, 10, 12, 13 & 17
Updated Figure 18
6 - 11
12
14
Updated Figure 22
1-23 (2015-Aug-11) to 1-24 (2015-Aug-13)
Updated Figure 21
13
Note(s) and/or Footnote(s):
1. Page and figure numbers for the previous version may differ from page and figure numbers in the current revision.
2. Correction of typographical errors is not explicitly mentioned.
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amsDatasheet
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AS3729 − Content Guide
1
1
1
2
General Description
Key Benefits & Features
Applications
Content Guide
Block Diagram
3
4
5
6
Pin Assignment
Absolute Maximum Ratings
Electrical Characteristics
Parameters
12 Application Information
13 Package Drawings & Markings
14 Ordering & Contact Information
15 RoHS Compliant & ams Green Statement
16 Copyrights & Disclaimer
17 Document Status
18 Revision Information
ams Datasheet
[v1-24] 2015-Aug-13
Page 19
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