uPOL MODULE
3A, High Efficiency
uPOL Module
MUN12AD03-SE
GENERAL DESCRIPTION:
FEATURES:
The uPOL module is non-isolated dc-dc
converter that can deliver up to 3A of output
current. The PWM switching regulator, high
frequency power inductor are integrated in one
hybrid package. It only needs input/output
capacitors and one voltage dividing resistor to
perform properly.
High Density uPOL Module
3A Output Current
91% Peak Efficiency at 12VIN
Input Voltage Range from 4.5V to 17V
Output Voltage Range from 0.6V to 5.5V
Enable / PGOOD Function
Automatic Power Saving/PWM Mode
Protections (OCP: Non-latching, OTP)
Adjustable Soft Start Function
Compact Size: 3.0mm*2.8mm*1.5mm
Pb-free for RoHS compliant
MSL 2, 260℃ Reflow
The module has automatic operation with PWM
mode and power saving mode according to
loading, through constant on-time control, the
module offers a simpler control loop and faster
transient response. Other features include
remote enable function, internal soft-start,
non-latching over current protection, power
good, input under voltage locked-out capability.
APPLICATIONS:
Point of Load Conversion
LDOs Replacement
Set Top Box / DSL Modem / AP Router
Industrial Personal Computer
The low profile and compact size package
(3.0mm × 2.8mm x 1.5mm) is suitable for
automated assembly by standard surface mount
equipment. The uPOL module is Pb-free and
RoHS compliance.
TYPICAL APPLICATION CIRCUIT & PACKAGE:
VBia s
EN
RPG
EN
VP G O O D
P GOOD
VIN
VO UT
VIN
Vout
uP OL Module
C IN
SS
CSS
3.0mm
2.8mm
R FB_T
C OUT
FB
GND
1.5mm(Max)
R FB_B
FIG.2 High Density Low Profile
FIG.1 Typical Application Circuit
uPOL Module
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MUN12AD03-SE
ORDER INFORMATION:
Part Number
Operating Temperature
Package
Range (°C)
(Pb-Free)
-40 ~ +125
DFN
MUN12AD03-SE
MSL
Note
Level 2
-
Order Code
Packing
Quantity
MUN12AD03-SE
Tape and reel
2000
PIN CONFIGURATION:
EN (1)
(8) SS
Vin (2)
(7) PGOOD
(9) GND
GND (3)
(6) FB
Vout (4)
(5) Vout
Top View
Fig.3 Pin configuration
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PIN DESCRIPTION:
Symbol
Pin No.
Description
EN
1
On/Off control pin for module.
EN = LOW, the module is off.
EN = HIGH, the module is on.
Do not float.
VIN
2
Power input pin. It needs to be connected to input rail.
GND
3, 9
Power ground pin for signal, input, and output return path. This pin
needs to be connected to one or more ground plane directly.
VOUT
4, 5
Power output pin. Connect to output for the load.
FB
6
Feedback input. Connect an external resistor divider to set the output
voltage.
PGOOD
7
Power Good indicator. The pin output is an open drain that can connect to
Vout by resistor.
SS
8
Leave SS pin floating for default 1ms soft-start time. For longer than 1ms
soft-start time, connect a capacitor from SS to GND.
Tss(ms)=Css(nF)*0.6V/4uA
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ELECTRICAL SPECIFICATIONS:
CAUTION: Do not operate at or near absolute maximum rating listed for an extended period of time. This stress may
adversely impact product reliability and result in failures outside of warranty.
Parameter
Min.
Typ.
Max.
Unit
VIN to GND
-
-
+19.0
V
VOUT to GND
-
-
+6.5
V
FB to GND
-
-
+4.0
V
EN to GND
-
-
VIN+0.3
V
PGOOD to GND
-
-
+19.0
V
Reflow Peak Temperature
-
-
+260
°C
-
-
+110
°C
Absolute Maximum Ratings
Tc
Case Temperature of Inductor
Tj
Junction Temperature
-40
-
+125
°C
Tstg
Storage Temperature
-40
-
+125
°C
Human Body Model (HBM)
-
-
2k
V
Machine Model (MM)
-
-
200
V
Charge Device Model (CDM)
-
-
500
V
Input Supply Voltage
+4.5
-
+17.0
V
Adjusted Output Voltage
+0.6
-
+5.5
V
-
-
+17.0
V
-40
-
+125
°C
-
39
-
°C/W
ESD Rating
Recommendation Operating Ratings
VIN
VOUT
PGOOD
Ta
Description
Power Good Voltage
Operating Temperature Range (Note 2)
Thermal Information
Rth(jchoke-a)
Thermal resistance from junction to
ambient. (Note 1)
NOTES:
1. Rth(jchoke-a) is measured with the component mounted on an effective thermal conductivity test board on 0 LFM
condition. The test board size is 30mm× 30mm× 1.6mm with 4 layers, 1oz. The test condition is complied with
JEDEC EIJ/JESD 51 Standards.
2. For maximum operating temperature, thermal derating to be taken into account.
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ELECTRICAL SPECIFICATIONS: (Cont.)
Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 30mm× 30mm× 1.6mm, 4 layers, 1oz.
The output ripple and transient response are measured by short loop probing and limited to 20MHz bandwidth.
Cin = 10uF/25V/1206*1, Cout = 22uF/10V/0805*1.
Symbol
Parameter
Conditions
Min. Typ. Max.
Unit
100
uA
Input Characteristics
IQ
ISD(IN)
IS(IN)
Quiescent current
Iout =0, VFB=VREF*105%
Input shutdown current
Vin =12V, EN = GND
-
5.5
-
uA
Vin =12V, EN = VIN
-
-
-
-
Iout = 0A, Vout = 1.8V
-
0.13
-
mA
Iout = 3A, Vout = 1.8V
-
0.58
-
A
Input supply current
Output Characteristics
IOUT(DC)
ΔVOUT
/ΔVIN
ΔVOUT
/ΔIOUT
VOUT(AC)
Output continuous current range
0
-
3
A
Line regulation accuracy
Vin = 4.5V to 17V
Vout = 1.8V, Iout = 1.5A
-
0.1
0.5
% VO(SET)
Load regulation accuracy
Iout = 0.5A to 3A
Vin = 12V, Vout = 1.8V
-
0.2
1
% VO(SET)
Vin = 12V, Vout = 3.3V
-
-
-
-
Iout = 0A
-
28
-
mVp-p
Iout = 3A
-
15
-
mVp-p
-
28
-
mVp-p
-
28
-
mVp-p
Output ripple voltage
Dynamic Characteristics
ΔVOUT-DP
Voltage change for positive load
step
ΔVOUT-DN
Voltage change for negative load
step
Iout = 1.5 A to 3A
Current slew rate = 0.15A/uS
Vin = 12V, Vout = 1.8V
Iout = 3A to 1.5A
Current slew rate = 0.15A/uS
Vin = 12V, Vout = 1.8V
Control Characteristics
VFB
Feedback regulation voltage
PWM Mode
0.591 0.600 0.609
V
PWM Mode, Ta=-40~85°C
0.585 0.600 0.615
V
PFM Mode, Ta=-40~85°C
0.591 0.600 0.618
V
70
-
-
%
-
1.0
-
MHz
-
-
4.5
V
88
90
92
%VREF
DMAX
Maximum duty cycle
Vout(MAX) = Vin * DMAX
FOSC
Oscillator frequency
PWM Operation
VUVLO
Input UVLO threshold
VPG
Power good threshold
VPG,HYS
Power good hysteresis
VPGL
VEN_TH
VFB rising
2
0.04
0.15
0.3
V
Enable rising threshold voltage
1.5
-
-
V
Enable falling threshold voltage
-
-
0.4
V
-
150
-
°C
3.8
-
5.2
A
PGOOD output low
TOTP
Over temp protection
OCP
Protection Output Current
IPGOOD=4mA
%VREF
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Rev.05
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TYPICAL PERFORMANCE CHARACTERISTICS: (1.0VOUT)
Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 30mm× 30mm× 1.6mm, 4 layers, 1oz.
The output ripple and transient response are measured by short loop probing and limited to 20MHz bandwidth.
Vin = 12 V, Vout = 1.0 V, unless otherwise noted.
Cin = 10uF/25V/1206*1, Cout = 22uF/10V/0805*1.
FIG.4 Efficiency V.S. Load Current
FIG.5 De-rating Curve
VOUT
VOUT
FIG.6 Output Ripple
(Iout=0A)
FIG.7 Output Ripple
(Iout=3A)
VOUT
VOUT
PGOOD
IOUT
EN
FIG.8 Transient Response
(50% to 100% Load Step)
FIG.9 Turn-on
(Iout=3A)
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TYPICAL PERFORMANCE CHARACTERISTICS: (1.2VOUT)
Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 30mm× 30mm× 1.6mm, 4 layers, 1oz.
The output ripple and transient response are measured by short loop probing and limited to 20MHz bandwidth.
Vin = 12 V, Vout = 1.2 V, unless otherwise noted.
Cin = 10uF/25V/1206*1, Cout = 22uF/10V/0805*1.
FIG.10 Efficiency V.S. Load Current
FIG.11 De-rating Curve
VOUT
VOUT
FIG.12 Output Ripple
(Iout=0A)
FIG.13 Output Ripple
(Iout=3A)
VOUT
VOUT
IOUT
PGOOD
EN
FIG.14 Transient Response
(50% to 100% Load Step)
FIG.15 Turn-on
(Iout=3A)
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TYPICAL PERFORMANCE CHARACTERISTICS: (1.5VOUT)
Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 30mm× 30mm× 1.6mm, 4 layers, 1oz.
The output ripple and transient response are measured by short loop probing and limited to 20MHz bandwidth.
Vin = 12 V, Vout = 1.5 V, unless otherwise noted.
Cin = 10uF/25V/1206*1, Cout = 22uF/10V/0805*1.
FIG.16 Efficiency V.S. Load Current
FIG.17 De-rating Curve
VOUT
VOUT
FIG.18 Output Ripple
(Iout=0A)
FIG.19 Output Ripple
(Iout=3A)
VOUT
VOUT
IOUT
PGOOD
EN
FIG.20 Transient Response
(50% to 100% Load Step)
FIG.21 Turn-on
(Iout=3A)
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Rev.05
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TYPICAL PERFORMANCE CHARACTERISTICS: (1.8VOUT)
Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 30mm× 30mm× 1.6mm, 4 layers, 1oz.
The output ripple and transient response are measured by short loop probing and limited to 20MHz bandwidth.
Vin = 12 V, Vout = 1.8 V, unless otherwise noted.
Cin = 10uF/25V/1206*1, Cout = 22uF/10V/0805*1.
FIG.22 Efficiency V.S. Load Current
FIG.23 De-rating Curve at 12Vin
VOUT
VOUT
FIG.24 Output Ripple
(12Vin, Iout=0A)
FIG.25 Output Ripple
(12Vin, Iout=3A)
VOUT
VOUT
PGOOD
IOUT
EN
FIG.26 Transient Response
(12Vin, 50% to 100% Load Step)
FIG.27 Turn-on
(12Vin, Iout=3A)
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TYPICAL PERFORMANCE CHARACTERISTICS: (3.3VOUT)
Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 30mm× 30mm× 1.6mm, 4 layers, 1oz.
The output ripple and transient response are measured by short loop probing and limited to 20MHz bandwidth.
Vin = 12 V, Vout = 3.3 V, unless otherwise noted.
Cin = 10uF/25V/1206*1, Cout = 22uF/10V/0805*2.
FIG.28 Efficiency V.S. Load Current
FIG.29 De-rating Curve at 12Vin
VOUT
VOUT
FIG.30 Output Ripple
(12Vin, Iout=0A)
FIG.31 Output Ripple
(12Vin, Iout=3A)
VOUT
VOUT
PGOOD
IOUT
EN
FIG.32 Transient Response
(12Vin, 50% to 100% Load Step)
FIG.33 Turn-on
(12Vin, Iout=3A)
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TYPICAL PERFORMANCE CHARACTERISTICS: (5.0VOUT)
Conditions: TA = 25 ºC, unless otherwise specified. Test Board Information: 30mm× 30mm× 1.6mm, 4 layers, 1oz.
The output ripple and transient response are measured by short loop probing and limited to 20MHz bandwidth.
Vin = 12 V, Vout = 5.0 V, unless otherwise noted.
Cin = 10uF/25V/1206*1, Cout = 22uF/10V/0805*2.
FIG.34 Efficiency V.S. Load Current
FIG.35 De-rating Curve at 12Vin
VOUT
VOUT
FIG.36 Output Ripple
(12Vin, Iout=0A)
FIG.37 Output Ripple
(12Vin, Iout=3A)
VOUT
VOUT
PGOOD
IOUT
EN
FIG.38 Transient Response
(12Vin, 50% to 100% Load Step)
FIG.39 Turn-on
(12Vin, Iout=3A)
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APPLICATIONS INFORMATION:
REFERENCE CIRCUIT FOR GENERAL APPLICATION:
Figure 40 show the module application schematics for input voltage +12V.
The output capacitor is selected to handle the output ripple noise requirements and system stability.
The out capacitance have to be followed COUT_Min shown in the TABLE 1
TABLE 1 Output capacitor setting
VIN (V)
VOUT (V)
COUT_Min (uF)
4.5~17
1
22
4.5~17
1.2
22
4.5~7
1.5
22*2
8~17
1.5
22
4.5~7
1.8
22*2
8~17
1.8
22
5~17
3.3
22*2
7~17
5
22*2
FIG.40 Reference Circuit for General Application
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APPLICATIONS INFORMATION: (Cont.)
SAFETY CONSIDERATIONS:
Certain applications and/or safety agencies may require fuses at the inputs of power conversion
components. Fuses should also be used when there is the possibility of sustained input voltage reversal
which is not current limited. For greatest safety, we recommend a fast blow fuse installed in the
ungrounded input supply line. The installer must observe all relevant safety standards and regulations.
For safety agency approvals, install the converter in compliance with the end-user safety standard.
INPUT FILTERING:
The module should be connected to a source supply of low AC impedance and high inductance in which
line inductance can affect the module stability. An input capacitor must be placed as near as possible to
the input pin of the module so to minimize input ripple voltage and ensure module stability.
OUTPUT FILTERING:
To reduce output ripple and improve the dynamic response as the step load changes, an additional
capacitor at the output must be connected. Low ESR polymer and ceramic capacitors are recommended
to improve the output ripple and dynamic response of the module.
PROGRAMMING OUTPUT VOLTAGE:
The module has an internal 0.6V±1.5% reference voltage. The output voltage can be programmed by
the dividing resistor (RFB_T and RFB_B). The output voltage can be calculated by Equation 1, resistor
choice may be referred to TABLE 2.
R FB_T
VOUT (V) 0.6 1
R
FB_B
(EQ.1)
TABLE 2 Resistor values for common output voltages
VOUT (V)
RFB_T(k)
RFB_B(k)
1.0
124
182
1.2
124
124
1.5
124
82.5
1.8
124
61.9
3.3
124
27.4
5.0
124
16.9
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APPLICATIONS INFORMATION: (Cont.)
Thermal Considerations:
All of thermal testing condition is complied with JEDEC EIJ/JESD 51 Standards. Therefore, the test
board size is 30mm× 30mm× 1.6mm with 2 layers. The case temperature of module sensing point is
shown as Figure 41. Then Rth(jchoke-a) is measured with the component mounted on an effective thermal
conductivity test board on 0 LFM condition. The MUN12AD03-SE modules are designed for using when
the case temperature is below 125°C regardless the change of output current, input/output voltage or
ambient temperature.
Sensing point (Defined case temperature)
FIG. 41 Case Temperature Sensing Point
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REFLOW PARAMETERS:
Lead-free soldering process is a standard of electronic products production. Solder alloys like Sn/Ag,
Sn/Ag/Cu and Sn/Ag/Bi are used extensively to replace the traditional Sn/Pb alloy. Sn/Ag/Cu alloy
(SAC) is recommended for this power module process. In the SAC alloy series, SAC305 is a very
popular solder alloy containing 3% Ag and 0.5% Cu and easy to obtain. Figure 42 shows an example of
the reflow profile diagram. Typically, the profile has three stages. During the initial stage from room
temperature to 150°C, the ramp rate of temperature should not be more than 3°C/sec. The soak zone
then occurs from 150°C to 200°C and should last for 60 to 120 seconds. Finally, keep at over 217°C for
60 seconds limit to melt the solder and make the peak temperature at the range from 240°C to 250°C.
It is noted that the time of peak temperature should depend on the mass of the PCB board. The reflow
profile is usually supported by the solder vendor and one should adopt it for optimization according to
various solder type and various manufacturers’ formulae.
℃
FIG.42 Recommendation Reflow Profile
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PACKAGE OUTLINE DRAWING:
Unit: mm
FIG.43 Package Outline Drawing
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LAND PATTERN REFERENCE:
Unit: mm
RECOMMENDED LAND PATTERN
RECOMMENDED STENCIL PATTERN
BASED ON 0.1mm THICKNESS STENCIL (Reference only)
FIG.44 Land Pattern Reference
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PACKING REFERENCE:
Unit: mm
Package In Tape Loading Orientation
Tape Dimension
A0
B0
F
W
D0
D1
3.20 0.10
3.30 0.10
5.50 0.05
12.00 0.30
φ1.55 0.05
φ1.5 +0.1/-0
E1
K0
P0
P1
P2
T
1.75 0.10
1.65 0.10
4.00 0.10
4.00 0.10
2.00 0.05
0.25 0.10
FIG.45 Packing Reference
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PACKING REFERENCE: (Cont.)
Unit: mm
Reel Dimension
See Detail A
Detail A
Peel Strength of Top Cover Tape
The peel speed shall be about 300mm/min.
The peel force of top cover tape is between 0.1N to 1.3N
FIG.46 Packing Reference (Cont.)
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REVISION HISTORY:
Date
Revision
Changes
2018.05.17
00
Release the preliminary specification.
2018.09.04
01
Update thermal de-rating curve
2018.12.13
02
Add Power good threshold
2019.07.02
03
Update maximum duty cycle、load regulation accuracy
Update thermal Information Rth(jchoke-a), VFB full temperature
2019.07.17
04
range tolerance, line and load regulation accuracy, conditions for
DMAX maximum duty cycle, change Ambient Temperature to
Operating Temperature Range on page 2 and 4.
2019.07.26
05
Add Peak reflow temp = 260°C and NOTES 2 on page 4
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