MPS MP100LGN Offline inductor-less regulator for low power application Datasheet

MP100L EasyPowerTM
Offline Inductor-Less Regulator
For Low Power Application
DESCRIPTION
FEATURES
The MP100L is a compact, inductor-less, goodefficiency, off-line regulator. It steps down the
AC line voltage to an adjustable DC output. It is
a simple solution to provide a bias voltage to
ICs in off-line applications. Its integrated smartcontrol system uses AC line power only when
necessary, thus minimizing device losses to
achieve good efficiency. This device can help
system designs meet new standby power
specifications.
•
•
•
•
•
•
•
•
•
•
•
The MP100L provides various protections, such
as Thermal Shutdown (TSD), VD Over Voltage
Protection (OVP), VD Shrot to GND Protection,
Over Load Protection (OLP), Short Circuit
Protection (SCP).
Universal AC Input (85VAC-to-305VAC)
Inductor-Less
Less than 100mW Standby Power
Good EMI
Low BOM Cost
Smart Control to Maximum Efficiency
Adjustable Output Voltage from 1.5V to 15V
Good Line and Load Regulation
Thermal Shutdown Protection
Short-Circuit Protection
Provide Power-Good Signal
APPLICATIONS
•
•
The MP100L is available in SOIC8E package.
Wall Switches and Dimmers
AC/DC Power Supply for Wireless System,
like ZigBee,Z-Wave
Standby Power for General Off-Line
Applications
•
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
RF
L
U1
BD1
RV
8 VIN
CX1
R1
1
PG
VOUT 4
VOUT
7 NC
GND
CFB
6
N
RUP
MP100L
VB
FB
5 VD
3
C2
RLW
GND
C1
2
GND
GND
MP100L Rev. 1.0
11/3/2014
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1
MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
ORDERING INFORMATION
Part Number*
MP100LGN
Package
SOIC-8 EP
Top Marking
MP100L
* For Tape & Reel, add suffix –Z (e.g. MP100LGN–Z);
TOP MARKING
MP: MPS prefix:
100L: first four digits of the part number;
LLLLLLLL: lot number;
MPS: MPS prefix:
Y: year code;
WW: week code:
PACKAGE REFERENCE
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
VIN ................................................. -1V to 700V
VOUT ........................................... -0.3V to 28 V
VB.................................................. -0.3V to 35V
FB ................................................. -0.3V to 6.5V
PG ................................................. -0.3V to 14V
(2)
Continuous Power Dissipation (TA = +25°C)
SOIC-8 EP .................................................2.5W
Junction Temperature .............................. 150°C
Lead Temperature ................................... 260°C
Storage Temperature ............... -55°C to +150°C
SOIC-8 EP………………………..50
Recommended Operating Conditions
(3)
50/60HZ AC RMS Voltage ............. 85V to 305V
VB...................................................... 8V to 30V
Operating Junction Temp. (TJ) . -40°C to +125°C
MP100L Rev. 1.0
11/3/2014
(4)
θJA
θJC
10
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
ELECTRICAL CHARACTERISTICS
CVD = 4.7μF/50V, COUT =2.2μF/50V, TJ = -40°C~+125oC, unless otherwise noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
VIN Section
o
TJ=25 C
Input Voltage
VIN
o
o
TJ=-40 C ~ +125 C
Input Supply Current
(Quiescent)
Input Voltage Threshold
(Fast)
Input Voltage Slow Threshold
Input Voltage Slow Threshold
Hysteresis
MOSFET ON Resistance
IINQC
700
V
650
V
VIN = 95V down to 90V &
VD=30V, No Load
20
40
μA
VINTHF
VIN Rising
70
86
95
V
VINTHS
VIN Rising
31
34
37
V
VINTHS-HYS
RON
IIN=400mA,VB=5V
2.5
V
9.5
Ω
Input Current Rise Time
IINRISERATE
140
200
μs/Amp
Input Current Fall Time
VD Section
IINFALLRATE
130
180
μs/Amp
VD peak voltage limit(OVP)
VDPKLMT
19
21
23
V
VD Under Voltage Lock Out
VDUVLO
6.2
7.0
7.7
V
VD Output Enable Threshold
VDTHOUT
13.2
15.4
17.5
V
Active Bleeder ON
VDBLDON
12.2
14.4
16.5
V
Active Bleeder ON Hysteresis
VDBLDON-HYS
Active Bleeder Current
VOUT Section
IDBLD
VOUT Regulated Voltage
VOUT
Output Current Limit
(5)
Line Regulation
(6)
Load Regulation
(7)
Dropout Voltage
Ground Pin Current
PSRR
(8)
1.3
VD=30V, IOUT=40mA
IOUTLMT
VDROP
IG
PSRR
VD=15V to 30V, IOUT=100μA
VD=30V, IOUT=100μA to 40mA
IOUT=40mA
IOUT=40mA
f=10Hz to 50kHz,VD=20V,
CVD=1μF,COUT=4.7μF
V
180
270
360
μA
11.5
12
12.5
V
120
220
0.05
0.1
0.75
1.1
320
0.1
0.3
1.05
1.25
mA
%
%
V
mA
0.45
0.95
>60
dB
FB Section
Reference Voltage
PG Section
Power Good Pull Down
Current
Power Good Threshold
Power Good Hysteresis
Power Good Delay
MP100L Rev. 1.0
11/3/2014
VFBREF
1.204
IPG
2
VPGTH
VPGTH-HYS
TPGDELAY
1
180
1.235
1.266
V
mA
1.12
85
245
1.24
310
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V
mV
µs
4
MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
ELECTRICAL CHARACTERISTICS
CVD = 4.7μF/50V, COUT =2.2μF/50V, Tj = -40°C~+125oC, unless otherwise noted.
Parameter
Thermal Shutdown
Thermal Shutdown Threshold
Thermal Shutdown Threshold
Hysteresis
Symbol
Condition
Min
Typ
Max
Units
TSD
160
ºC
TSD-HYS
20
ºC
Notes:
5)
6)
7)
8)
Line Regulation = (VOUT@VB=30V,100uA Load – VOUT@VB=15V,100uA Load) /12V*100.
Load Regulation = (VOUT@VB=30V,40mA Load – VOUT@VB=30V,100uA Load)/12V*100.
The drop out voltage is defined as VD-VOUT.
Guarantee by design.
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
TYPICAL CHARACTERISTICS
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
Performance waveforms are tested on the evaluation board of the Design Example section.
VIN=230VAC, VOUT=12V, IOUT=20mA, CVD=220μF/35V, TA=+25°C, unless otherwise noted.
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
PIN FUNCTIONS
SOIC-8
EP
Pin #
Name
1
PG
2
GND
3
FB
4
5
VOUT
VD
6
7
VB
NC
Connect with VD directly.
Not Connected.
8
VIN
Voltage Input Supply. Providing energy when the voltage falls within the charging window.
Expose
pad
MP100L Rev. 1.0
11/3/2014
Description
Power Good. Requires an external pull-up resistor because it is an open drain. When VOUT
reaches 80% of its normal output voltage, PG goes high after a 245µs delay.
Ground.
Output Voltage Feedback. Connect to a capacitor to VOUT to improve low dropout stability.
Internally voltage divider set the output to be 12V. Connect to the tap of a resistor divider to
adjust the output voltage.
Output Voltage.
Connect a cap from this pin to GND to store energy for the low drop-out stage.
Connect to a large copper surface connected to GND to enhance thermal dissipation.
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
BLOCK DIAGRAM
Power
Management
PG
Power Good
Circuit
VIN
Charging
Window
Main Device
Active
Bleeder
GND
Thermal
Protection
VD OVP
FB
Output
Current Limit
VOUT
Output
Current Sense
VB
Regulator
VD
Figure 1: Functional Block Diagram
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
OPERATION
MP100L employs a smart inductor-less regulator
design (patent pending) to charge the VD
capacitor (C1 in Typical Application Section) from
the offline AC input, and then to deliver the
stored energy to the load with a stable output
voltage. When VIN is less than its 34V threshold,
VD can be charged up by up to 1A input current.
An internal LDO regulates VOUT to 12V and can
supply up to 20mA load when VIN is between
85VAC and 305VAC. The proprietary design
allows the universal AC input to efficiently power
the IC directly.
Startup
During the startup, the internal switch connected
between VIN and VB turns on when the input
voltage is within its charging window (typically
below 34V), thus gradually charging the VD
voltage. The LDO will not resume with a softstart until the VD voltage reaches 15.4V.
Internal NMOS Switching
The EMI performance of MP100L greatly relates
to the turn-on and turn-off speed of internal
switch connected between VIN and VB. To pass
related emissions standards with only an X-cap
connected to the input ports, the MP100L slowly
turns off the internal switch when the VIN voltage
reaches 34V, and turns the switch off
immediately when VIN reaches 86V during the
turn-off period. During the turn-on period, when
VIN falls to 31.5V, the internal switch turns on
slowly. The turn on and turn off slope is130us/A.
To avoid mis-triggered of internal switch when
there is noise or inductive kick in input voltage,
when Vin falls to 31.5V, the internal switch starts
to turn on, and there will be 110us blanking to
filer the noise of VIN to let the switch on, when
VIN rises to 34V, the internal switch starts to turn
off, and there is 300us blanking to prevent the
switch return on.
Active Bleeder Circuit
The input voltage may not enter its charging
window during normal operation due to parasitic
MP100L Rev. 1.0
11/3/2014
capacitance from VIN to GND. An active bleeder
circuit is enabled to pull down the VIN voltage
whenever the VD voltage falls below 14.4V to
guarantee that the output gets enough energy
from the input ports. In addition, when the power
supply shuts down, the active bleeder circuit
discharges the energy stored in the parasitic
capacitor to ensure that the circuit can restart
easily.
VD Over-Voltage Protection
The VD capacitor provides energy for the output
load. If the voltage of VD exceeds 21V, the
internal switch between VIN and VB turns off
immediately to prevent the VD voltage from rising
too high, which can damage the LDO stage.
VD Short-Circuit Protection
The output current is limited to 220mA if the
output is shorted to ground, which also
decreases the VD voltage. When VD drops
below 7.0V, LDO turns off. The input voltage then
gradually charges VD up to 15.4V to enable the
LDO. When LDO turns on, the output current
drops the VD voltage to 7.0V again. This process
will continue until the output short condition
ceases.
VOUT Over-Current Protection
The VD and VOUT voltages will drop
simultaneously if the output current exceeds its
normal value. When the VD voltage falls to 7.0V,
the second stage LDO shuts down immediately.
Then the input voltage charges VD to 15.4V to
enable the LDO. Due to the output current limit
circuit, the maximum current is typically limited to
220mA.
Thermal Shutdown Protection
Accurate temperature protection prevents the
chip from operating at exceedingly high
temperature. When the silicon die temperature
exceeds 160°C, the whole chip shuts down.
When the temperature falls below its lower
threshold of 140°C, the chip is enabled again.
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10
MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
Power-Good
The MP100L integrates a power-good circuit to
signal that the output meets the controller IC’s
requirements. It is an open drain structure and
requires a pull-up resistor to VOUT. During start
up, the VOUT voltage rises smoothly. When it
reaches 80% of its normal value, the power-good
signal goes high after a 245µs delay to indicate a
normal output.
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
APPLICATION INFORMATION
COMPONENT SELECTION
Setting the Output Voltage
The output voltage is set to 12V by internal large
feedback resistors. Adjust VOUT by choosing
appropriate external feedback resistors. The
recommended output voltage is between 1.5V
and 15V. Defining the upper and lower feedback
resistors as RUP and RLW respectively (refer to the
picture in Typical Application section):
RUP =
RLW × (
VOUT
− 1)
1.235
For the external resistors to dominate over the
internal resistors, select relatively small values of
RUP and RLW compared to the internal resistors.
However, to minimize the load consumption,
avoid very small external resistors. For most
applications, choose RLW=10.2kΩ. To accurately
set the output voltage, select an RUP that can
counter the internal upper-feedback resistor
value of 1MΩ. The table below lists typical
resistor values for different output voltages:
Table 1: Resistors Selecting vs. Output Voltage
Setting
VOUT(V)
1.5
3.3
5
15
RUP(kΩ)
2.21(1%)
16.9(1%)
30.9(1%)
121(1%)
RLW(kΩ)
10.2(1%)
10.2(1%)
10.2(1%)
10.2(1%)
capacitor and a large aluminum capacitor in
parallel.
Output Power Capability
The maximum input power to the VD capacitor is
limited by the fixed charging window. Considering
the LDO power loss, the MP100L has a limited
maximum output power.
The following factors influence the MP100L’s
maximum output power: the input rectifier (full
bridge or half-wave); the VD capacitor connected
between VD and GND; the output voltage; and
the MP100L’s temperature-rise requirement,
which is relative to the different application
environments.
VIN
VIN
VAC
VAC
GND
GND
Full Bridge Rectifier
Half-wave Rectifier
Figure depicts the relationship between the
maximum output power and the VIN voltage
when the output voltage is 12V, 5V and 3.3V,
respectively. The plots account for full bridge
rectifiers, the temperature rise of MP100L is less
than 60°C on the test board in 25°C room
temperature test in the open frame.
SELECTION OF VD CAPACITOR
The bypass capacitor on the VD pin needs to be
sufficiently large to provide a stable current.
Calculate the capacitance (in μF) based on the
following equation:
CVD =
Iload × τs
Vripple
Where, Iload is the output current (mA); τ s is
based on the type of input rectifier—for example,
τ s is 20ms for a half-wave rectifier, and 10ms for
a full-bridge rectifier, Vripple is the voltage ripple on
the VD capacitor—normally the ripple is limited to
2V to 3V. For best results, use a small ceramic
MP100L Rev. 1.0
11/3/2014
Figure 2: Output Power vs. Input Voltage
Line Transformer
MP100L can work well when connected to AC
line or programmable AC source. But when using
an isolation transformer or a variable transformer
as source, because of the high inductance of the
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
transformer (usually in the mH’s), high voltage
spikes occur when MP100L turns off the internal
switch connected between VIN and VB, which
may damage the IC. An X- capacitor must be
installed before the rectifier to guarantee the
reliability of the system.
EMI
To meet the relevant conducted emissions
standard, the internal switch connected between
VIN and VB is designed to turn on and off slowly.
By adopting this method, a small X cap
connected between the input ports will pass EMI
with enough margins. For general application,
220nF X-capacitor between the input ports is
enough to pass EMI, which will make the whole
system compact.
1) Minimize the loop area formed by positive
output of rectifier, VIN,VB and GND.
2) Ensure all feedback connections are short
and direct. Place the feedback resistors and
compensation components as close to the
chip as possible.
3) Output capacitor should be put close to the
output terminal.
4) Connect the exposed pad with GND to a
large copper area to improve thermal
performance and long-term reliability
RF
L
R4
U1
BD1
RV
CX1
8 VIN
R5
R6
6
VOUT 4
VOUT
C3
VB
R1
MP100L
N
FB
5
Surge
R3
1
PG
7 NC
GND
3
VD
C2
C4
R2
GND
C1
2
GND
From its working principle, mP100L is working
just when VIN falls into its charging window, so
when surges happen at this moment, then a lot of
energy will be by MP100L due to the slow turn off
process. To protect it from damage, a fast turn off
threshold (typically it is 86V) of VIN is set
specially to shut down the switch connected
between VIN and VB quickly.
Since there is no bulk capacitor to absorb AC line
transients, MOV should be used to protect the IC
to survive the transient test. Besides the value of
fuse resistor will also affect the surge result, the
larger value used, the better to facilitate to pass
the surge test, but the more power consumption
will be caused, in the meanwhile, the larger value
used, the easier to trigger its fast turn off
threshold, 20 ohm fuse resistor is recommended
in real application.
GND
Top Layer
Besides, the thermal pad must be connected to
the GND for better surge performance.
PCB Layout Guide
PCB layout is very important to achieve good
regulation, ripple rejection, transient response
and thermal performance. It is highly
recommended to duplicate EVB layout for
optimum performance.
Bottom Layer
Figure 2: PCB Layout
If change is necessary, please follow these
guidelines and take Figure 3 for reference.
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
Design Example
Below is a design example following the
application guidelines for the specifications:
Table 2: Design Example
VIN
VOUT
IOUT
85V to 265V
12V
20mA
The detailed application schematic is shown in
Figure 4. The typical performance and circuit
waveforms have been shown in the Typical
Performance Characteristics section. For more
device application, please refer to the related
Evaluation Board Datasheets.
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
TYPICAL APPLICATION CIRCUITS
RF 20/1W
L
R4
NC
85~265VAC
RV
275VAC
CX1
220nF
/275VAC
U1
BD1
MB6S
8 VIN
R5
NC
R3
1
PG
100k
VOUT 4
7 NC
GND
R6
NC
6
VB
C3
470pF/50V
MP100L
N
FB
5
C1
220uF/35V
VOUT
VD
GND
R1
90.9k
1%
C2
3
R2
10.2k
1%
4.7uF/16V
C4
12V/20mA
0.1uF/16V
2
GND
GND
Figure 4: Typical Application
MP100L Rev. 1.0
11/3/2014
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
FLOW CHART
Start
N
VIN>34V
Y
Turn Off Active
Bleeder
Turn On Active
Bleeder
Turn On LDO
Thermal Monitor
Monitor VD
Monitor VFB
TSD=Logic Hihg
Y
N
VD<7V
Y
Turn Off LDO
MP100L Rev. 1.0
11/3/2014
N
Y
Y
N
Fast Turn Off
Internal Switch
VD>15.4V
VD<14.4V
Y
Y
Slowly Turn On
Internal Switch
N
N
N
VIN>86V
Y
Slowly Turn Off
Internal Switch
VD>15.7V
N
VIN<31.5V
Monitor Output
Current
N
VFB>1.12V
IOUTLMT=220mA
Y
PG=Logic High
OCP,SCP&OTP is auto restart
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MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
SIGNAL EVOLUTION IN THE PRESENCE OF FAULTS
Unplug from
main input
Start up
Normal Over current
operation occures
Over temperature
occures
VD
VDTHOUT
VDBLDON
VDUVLO
LDO ON
VOUT
Bleeder
Switch
On
Off
Fault Flag
Normal operation
MP100L Rev. 1.0
11/3/2014
Normal operation OCP/SCP Fault
Occurs Here
Normal operation
OTP Fault
Occurs Here
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Normal operation
17
MP100L EASYPOWERTM – OFFLINE INDUCTOR-LESS REGULATOR
PACKAGE INFORMATION
SOIC8E
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP100L Rev. 1.0
11/3/2014
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