DIODES AP2001_06

AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
General Description
Features
•
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•
•
•
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The AP2001 integrates Pulse-width-Modulation (PWM) control
circuit into a single chip, mainly designed for power-supply
regulator. All the functions included are an on-chip 2.5V
reference output, two error amplifiers, an adjustable oscillator,
two dead-time comparators, UVLO, SCP, DTC circuitry, and dual
common-emitter (CE) output transistor circuit.
Dual PWM control circuitry
Operating voltage can be up to 50V
Adjustable Dead Time Control (DTC)
Under Voltage Lockout (UVLO) protection
Short Circuit Protection (SCP)
Variable oscillator frequency: 500KHz Max
2.5V voltage reference output
SOP-16L package
Lead Free Finish/RoHS Compliant for Lead Free
products (Note 1)
Recommend the output CE transistors as pre-driver for Driving
externally. The DTC can provide from 0% to 100%. Switching
frequency can be adjustable by trimming RT and CT. During low
VCC situation, the UVLO makes sure that the outputs are off until
the internal circuit is operating normally.
Applications
•
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Backlight inverter
DC/DC converts in computers, etc.
Ordering Information
AP 2001 X X X
Note:
Lead Free
S : SOP-16L
L : Lead Free Package
(Note 2)
- U : Tube
- 13 : Taping
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
Lead-free
Note:
Packing
Package
AP2001S
Tube
Package Packaging
Part Number
Code
(Note 2) Quantity
Suffix
S
SOP-16L
50
-U
13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP2001 Rev. 1
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NOVEMBER 2006
© Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Pin Assignments
( Top View )
CT
1
16
RT
EA1+
EA1FB1
2
15
3
14
4
13
5
12
DTC 1
O UT1
GND
6
11
7
10
8
9
R EF
SC P
EA2+
EA2FB2
DTC 2
O UT2
VCC
SO P-16L
Pin Descriptions
Name
CT
RT
EA+
EA FB
DTC
OUT
GND
VCC
SCP
REF
AP2001 Rev. 1
Description
Timing Capacitor
Timing Resistor
Error Amplifier Input(+)
Error Amplifier Input(-)
Feedback Loop Compensation
Dead Time Control
Pre-driver Output
Ground
Supply Voltage
Short Circuit Protection
Voltage Reference
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© Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Block Diagram
VCC
SCP
RT
Bandgap
Reference
REF
CT
DTC1
Oscillator
MAX.500KHz
+
+
-
EA1 +
EA1 -
OUT1
VREF
Error Amplifier 1
PWM Amplifier 1
170K
FB1
1.18V
+
+
R
UVLO
R
S
EA2+
+
+
EA2 Error Amplifier 2
OUT2
PWM Amplifier 2
FB2
GND
DTC2
Absolute Maximum Ratings
Symbol
Rating
Unit
Supply Voltage
40
V
VI
Amplifier Input Voltage
20
V
VO
Collector Output Voltage
40
V
Io
Collector Output Current
21
mA
VCC
TOP
TST
TLEAD
Parameter
Operating Temperature Range
Storage Temperature Range
Lead Temperature 1.6 mm (1/16 inch) from Case for 5 Seconds
AP2001 Rev. 1
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-20 to +85
o
-65 to +150
o
245
o
C
C
C
NOVEMBER 2006
© Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Recommended Operating Conditions
Symbol
VCC
VI
VO
IO
IFB
RF
CT
RT
FOSC
TOP
Parameter
Min.
3.6
1.05
Supply Voltage
Amplifier Input Voltage
Collector Output Voltage
Collector Output Current
Current into Feedback Terminal
Feedback Resistor
Timing Capacitor
Timing Resistor
Oscillator Frequency
Operating Free-air Temperature
Max.
40
1.45
40
20
45
100
150
5.1
1
-20
Unit
V
V
V
mA
µA
kΩ
pF
kΩ
KHz
ºC
15000
100
500
85
Electrical Characteristics (TA = 25ºC, VCC = 6V, f = 200 KHz)
Reference (REF)
Symbol
Parameter
Output Voltage (pin 16)
VO
Output Voltage Change with
Temperature
VDLI
Input Stability
VDLO
Output Stability
IO
Short-circuit Output Current
Under voltage lockout (UVLO)
Symbol
Parameter
VUT
Upper Threshold Voltage (VCC)
VLWT
Lower Threshold Voltage (VCC)
VHT
Hysteresis (VCC)
AP2001 Rev. 1
Conditions
IO = 1mA
TA = -20ºC ~ 25ºC
TA = 25ºC ~ 85ºC
VCC = 3.6V ~ 40V
IO = 0.1 mA ~ 1mA
VO = 0
Conditions
IO(REF) = 0.1mA
TA = 25ºC
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Min.
2.4
3
Min.
80
Typ.
2.5
-0.1
-0.2
2
1
10
Max.
2.6
±1
±1
12.5
7.5
30
Unit
V
%
%
mV
mV
mA
Typ.
2.65
2.45
200
Max.
Unit
V
V
mV
NOVEMBER 2006
© Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Electrical Characteristics ( Continued )
Short-circuit protection (SCP) control
Symbol
Parameter
Conditions
VIT
Input Threshold Voltage
TA = 25ºC
VSTB
Standby Voltage
No pull up
VLT
Latched Input Voltage
No pull up
ISCP
Input (Source) Current
VI = 0.7V, TA = 25ºC
VCT
Comparator Threshold Voltage (FB)
Oscillator (OSC)
Symbol
Parameter
Conditions
FOSC
Frequency
CT = 330 pF, RT = 10 KΩ
Standard Deviation of Frequency
CT = 330 pF, RT = 10 KΩ
Frequency Change with Voltage
VCC = 3.6V ~ 40V
∆FOSC
TA = -20ºC ~ 25ºC
Frequency Change with Temperature
TA = 25ºC ~ 85ºC
Dead-time control (DTC)
Symbol
Parameter
Conditions
Min.
0.65
140
-10
Min.
Min.
IBDT
Input Bias Current
IDT
Latch Mode (Source) Current
TA = 25ºC
-80
VDT
Latched Input Voltage
IO = 40µA
2.3
VT0
VIO
IIO
IIB
VCM
AV
GBW
CMRR
VOH
VOL
IOI
IOO
AP2001 Rev. 1
Parameter
Input Offset Voltage
Input Offset Current
Input Bias Current
Max.
0.75
230
120
-20
Unit
V
mV
mV
µA
V
Typ.
200
10
1
-0.4
-0.2
Max.
Unit
KHz
Typ.
Max.
±2
±2
1
Input Threshold Voltage at f= 10 KHz
VT100
Error-amplifier
Symbol
Typ.
0.7
185
60
-15
1.18
Zero duty cycle
Maximum duty cycle
Conditions
2.05
1.2
Min.
VO (FB) = 1.25V
VO (FB) = 1.25V
VO (FB) = 1.25V
Common-mode Input Voltage
VCC = 3.6V ~ 40V
Range
Open-loop Voltage
RF = 200 KΩ
Amplification
Unity-gain Bandwidth
Common-mode Rejection
Ratio
Max. Output Voltage
Min. Output Voltage
Output (Sink) Current (FB)
VID = -0.1V, VO = 1.25V
Output (Source) Current (FB) VID = 0.1V, VO = 1.25V
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2.25
60
µA
V
Typ.
Max.
Unit
160
±6
±100
500
mV
nA
nA
V
80
dB
1.5
MHz
80
dB
1.6
-70
V
V
mA
µA
Vref-0.1
1
0.5
-45
Unit
1.45
1.05
to
1.45
70
%
NOVEMBER 2006
© Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Electrical Characteristics ( Continued )
Output section
Symbol
Parameter
Conditions
Min.
Typ.
ILEAK
Leakage Current
VO = 40V
VSAT
Output Saturation Voltage
IO = 10 mA
1.2
VO = 6V
90
ISC
Short-circuit Output Current
PWM comparator
Symbol
Parameter
VT0
Conditions
Min.
Input Threshold Voltage at f = Zero duty cycle
10 KHz (FB)
Maximum duty cycle
VT100
Total device
Symbol
Parameter
Conditions
Max.
Unit
10
µA
2
V
mA
Typ.
Max.
Unit
2.05
2.25
V
1.2
1.45
V
Min.
Typ.
Max.
Unit
ICCS
Standby Supply Current
Off-state
2.5
3.0
mA
ICCA
Average Supply Current
RT = 10 KΩ
2.8
3.5
mA
Typical Application Circuit
VCC
200k
0.47uF
150
470
L1
Boost Output
50k
33k
33k
R1
R2
330pF
R3
C2
22k
33k
R4
C1
500pF
V ref
16
15
14
13
12
11
10
9
7
8
Note:
Values for R1 through R7 , C1 through C4 , and
L1 and L2 depend upon individual application.
AP2001
1
2
3
4
5
6
470
C5
R5
500
pF
470
220
1uF
L2
Buck Output
R6
33k
33k
470
C4
R7
Dual output DC/DC converter
AP2001 Rev. 1
6 of 8
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NOVEMBER 2006
© Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Marking Information
(1) SOP-16L
( Top View )
9
16
Logo
Part No.
ID code
L: Lead Free Package
AP2001
YY WW X X
1
8
Xth week: 01~52
Year: "01" = 2001
"02" = 2002
~
SOP-16L
AP2001 Rev. 1
7 of 8
www.diodes.com
NOVEMBER 2006
© Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Package Information
(1) Package Type: SOP-16L
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.
AP2001 Rev. 1
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© Diodes Incorporated