AEROSEMI
FEATURES
MT6513 High Precision CC/CV
Primary-Side Conteoller
GENERAL DESCRIPTION
MT6513 is a high performance offline PWM Power
switch for low power AC/DC charger and adapter
applications. It operates in primary-side sensing and
regulation. Consequently, opto-coupler and TL431
could be eliminated. Proprietary Constant Voltage (CV)
and Constant Current (CC) control is integrated as
shown in the figure below.
In CC control, the current and output power setting can
be adjusted externally by the sense resistor Rs at ISEN
pin. In CV control, multi-mode operations are utilized to
achieve high performance and high efficiency. In
addition, good load regulation is achieved by the built-
in cable drop compensation. Device operates in PFM in
CC mode as well at large load condition and it operates
in PWM with frequency reduction at light/medium load.
MT6513 offers power on soft start control and
protection coverage with auto-recovery features
including Cycle-by-Cycle current limiting, VIN OVP,
VIN clamp and UVLO. Excellent EMI performance is
achieved with frequency shuffling technique.
High precision constant voltage (CV) and constant
current (CC) can be achieved by MT6513.
5% Constant Voltage Regulation, 5% Constant
Current Regulation at Universal AC input
Primary-side Sensing and Regulation Without
TL431 and Opto-coupler
Programmable CV and CC Regulation
Adjustable Constant Current and Output Power
Setting
Built-in Secondary Constant Current Control with
Primary Side Feedback
Built-in Adaptive Current Peak Regulation
Built-in Primary winding inductance compensation
Programmable Cable drop Compensation
Power on Soft-start
Built-in Leading Edge Blanking (LEB)
Cycle-by-Cycle Current Limiting
VIN Under Voltage Lockout with Hysteresis(UVLO)
VIN OVP
VIN Clamp
APPLICATIONS
Low
Power AC/DC offline SMPS for
Cell Phone Charger
Digital Cameras Charger
Small Power Adapter
Auxiliary Power for PC, TV etc.
Linear Regulator/RCC Replacement
Fig.1. Typical CC/CV Curve
MT6513 V1.0
www.aerosemi.com
Aerosemi Proprietary Information.Unauthorized Photocopy and Duplication Prohibited.
All Rights Reserved.
1
AEROSEMI
TYPICAL APPLICATION
MT6513 High Precision CC/CV Primary-Side Controller
MT6513 V1.0
www.aerosemi.com
Aerosemi Proprietary Information.Unauthorized Photocopy and Duplication Prohibited.
All Rights Reserved.
2
AEROSEMI
GENERAL INFORMATION
Pin Configuration
The pin map is shown as below for SOP8
MT6513 High Precision CC/CV Primary-Side Controller
Package Dissipation Rating
RθJA (℃/W)
Package
SOP 8
90
2
NOTE:
Drain Pin Connected 100mm PCB
copper clad.
Parameter
Drain Voltage (off state)
VIN Zener Clamp
Continuous Current
COMP Voltage
ISEN Input Voltage
ZCS Input Voltage
Min/Max Operating
Junction Temperature T
J
Min/Max Storage
Temperature T
stg
Lead Temperature
(Soldering,10secs)
Value
-0.3V to Bvdss
10 mA
-0.3 to 7V
-0.3 to 7V
-0.3 to 7V
-20 to 150
º
C
-55 to 150
º
C
260
º
C
Ordering Information
Part Number
MT6513CP
MT6513CPA
Description
SOP8,Pb-free,Tube
SOP8,Pb-free,T&R
Note:
Stresses beyond those listed under “absolute
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 “recommended operating conditions” is not
implied. Exposure to absolute maximum-rated conditions for
extended periods may affect device reliability.
TERMINAL ASSIGNMENTS
Pin Num Pin Name
1
2
3
4
5,6
7,8
VIN
COMP
ZCS
ISEN
DRAIN
GND
I/O
P
I
I
P
O
P
Description
Power Supply
Loop Compensation for CV Stability
The voltage feedback from auxiliary winding. Connected to resistor
divider From auxiliary winding reflecting output voltage. PWM duty
cycle is determined by EA output and current sense signal at pin4.
Current Sense
HV MOSFET Drain Pin. The Drain pin is connected to the
primary lead of the transformer
Ground
OUTPUT POWER TABLE
Product
MT6513
Notes:
1.
Maximum practical continuous power in an Adapter design with sufficient drain pattern as a heat sink,at 50℃ ambient.
230VAC±15%
Adapter
8W
85-264VAC
Adapter
5W
MT6513 V1.0
www.aerosemi.com
Aerosemi Proprietary Information.Unauthorized Photocopy and Duplication Prohibited.
All Rights Reserved.
3
AEROSEMI
BLOCK DIAGRAM
MT6513 High Precision CC/CV Primary-Side Controller
MT6513 V1.0
www.aerosemi.com
Aerosemi Proprietary Information.Unauthorized Photocopy and Duplication Prohibited.
All Rights Reserved.
4
AEROSEMI
ELECTRICAL CHARACTERISTICS
MT6513 High Precision CC/CV Primary-Side Controller
(T
A
= 25
O
C, VIN=16V, if not otherwise noted)
Symbol
Parameter
Stand by Current
Operation Current
VIN Under Voltage Lock out Enter
Test Conditions
VIN=13V
Operation supply current ZCS=2V,
ISEN=0V, VIN=20V
Min
Typ
Max
Unit
uA
mA
V
V
V
V
ns
Supply Voltage(VIN) Section
I
DD ST
I
DD-op
UVLO(OFF)
UVLO(ON)
VIN_clamp
OVP
TLEB
Vth_oc
Td_oc
ZSENSE_IN
T_ss
Freq_Max
Freq_Nom
Freq_startup
△f/Freq
Frequency shuffling range
Error Amplifier section
Vref_EA
Gain
I_
COMP_MAX
Reference voltage for EA
DC gain of EA
Max. Cable compensation current
5
-
8
13.5
27
26
2
9
14.8
28.5
27.5
20
3
10
16.0
30
29
VIN falling
VIN rising
I
DD
=10mA
Ramp VIN until gate shutdown
VIN Under Voltage Lockout Exit
Maximum VIN operation voltage
Over voltage protection Threshold
Current Sense Input Section
LEB time
Over current threshold
OCP Propagation delay
Input Impedance
Soft start time
IC Maximum frequency
System Nominal switch
frequency
ZCS=0V,Comp=5V
55
50
17
60
50
14
±4
1.97
ZCS=2V,Comp=0V
2
60
37.5
2.03
65
880
625
910
150
940
mV
ns
Kohm
ms
KHz
KHz
KHz
%
Frequency Section
V
dB
uA
Power MOSFET Section
BVdss
Rdson
MOSFET Drain-Source Break down Voltage
On Resistance
Static,Id=0.4A
600
10
V
Ώ
Note:
1. Freq_Max indicates IC internal maximum clock frequency. In system application, the
maximum operation frequency of 60Khz nominal occurs at maximum output power or the
transition point from CV to CC.
MT6513 V1.0
www.aerosemi.com
Aerosemi Proprietary Information.Unauthorized Photocopy and Duplication Prohibited.
All Rights Reserved.
5
电子工程世界
