AP2001
Monolithic Dual Channel PWM Controller
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.3 Feb 20, 2004
1/8
Features
- 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
- 16-pin PDIP and SOP packages
Applications
- Backlight inverter
- DC/DC converts in computers, etc.
General Description
The AP2001 integrates Pulse-width-Modulation
(PWM) control circuit into a single chip, mainly
designs for power-supply regulator. All the functions
included 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.
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 operational
normally.
Pin Assignments
1
2
3
15
14
13
12
11
10
98
7
6
5
4
16
CT
EA2+
EA2-
FB2
DTC2
OUT2
VCC
GND
OUT1
DTC1
FB1
EA1+
RT
REF
SCP
EA1-
( Top View )
PDIP/SOP
Pin Descriptions
Name Description
CT Timing Capacitor
RT Timing Resistor
EA+ Error Amplifier Input(+)
EA - Error Amplifier Input(-)
FB Feedback Loop Compensation
DTC Dead Time Control
OUT Pre-driver Output
GND Ground
VCC Supply Voltage
SCP Short Circuit Protection
REF Voltage Reference
AP2001
Monolithic Dual Channel PWM Controller
Anachip Corp.
www.anachip.com.tw Rev. 0.3 Feb 20, 2004
2/8
Ordering Information
AP2001 X X X
Package Packing
N: PDIP-16L
S: SOP-16L
Blank: Tube
A : Taping
Lead Free
Blank : Normal
L : Lead Free Package
Block Diagram
Bandgap
Reference
DTC2
REF
OUT1
OUT2
PWM Amplifier 2
PWM Amplifier 1
EA1 +
EA1 -
VCC
Oscillator
RTSCP CT DTC1
Error Amplifier 1
FB1
EA2+
EA2 -
Error Amplifier 2
FB2
R
S
VREF
UVLO
R
MAX.500KHz
GND
170K
1.18V
+
-
+
-
+
+
+
+
-
AP2001
Monolithic Dual Channel PWM Controller
Anachip Corp.
www.anachip.com.tw Rev. 0.3 Feb 20, 2004
3/8
Absolute Maximum Ratings
Symbol Parameter Rating Unit
VCC Supply voltage 40 V
VI Amplifier input voltage 20 V
VO Collector output voltage 40 V
Io Collector output current 21 mA
TOP Operating temperature range -20 to +85 oC
TST Storage temperature range -65 to +150 oC
TLEAD Lead temperature 1.6 mm(1/16 inch) from case for 10 seconds 260 oC
Recommended Operating Conditions
Symbol Parameter Min. Max. Unit
VCC Supply voltage 3.6 40 V
VI Amplifier input voltage 1.05 1.45 V
VO Collector output voltage 40 V
IO Collector output current 20 mA
IFB Current into feedback terminal 45 µA
RF Feedback resistor 100 kΩ
CT Timing capacitor 150 15000 pF
RT Timing resistor 5.1 100 kΩ
FOSC Oscillator frequency 1 500 Khz
TOP Operating free-air temperature -20 85 ºC
AP2001
Monolithic Dual Channel PWM Controller
Anachip Corp.
www.anachip.com.tw Rev. 0.3 Feb 20, 2004
4/8
Electrical Characteristics (TA=25ºC, VCC=6V, f=200 Khz)
Reference (REF)
Symbol Parameter Conditions Min. Typ. Max. Unit
Output voltage (pin 16) IO = 1mA 2.4 2.5 2.6 V
TA = -20ºC ~ 25ºC -0.1 ±1 %
VO Output voltage change with
temperature TA = 25ºC ~ 85ºC -0.2 ±1 %
VDLI Input stability VCC=3.6V ~ 40V 2 12.5 mV
VDLO Output stability IO=0.1 mA ~ 1mA 1 7.5 mV
IO Short-circuit output current VO=0 3 10 30 mA
Under voltage lockout (UVLO)
Symbol Parameter Conditions Min. Typ. Max. Unit
VUT Upper threshold voltage (VCC) 2.65 V
VLW T Lower threshold voltage (VCC) 2.45 V
VHT Hysteresis (VCC)
IO(REF) = 0.1mA
TA = 25ºC 80 200 mV
Short-circuit protection (SCP) control
Symbol Parameter Conditions Min. Typ. Max. Unit
VIT Input threshold voltage TA = 25ºC 0.65 0.7 0.75 V
VSTB Standby voltage No pull up 140 185 230 mV
VLT Latched input voltage No pull up 60 120 mV
ISCP Input (source) current VI = 0.7V, TA = 25ºC -10 -15 -20 µA
VCT Comparator threshold voltage (FB) 1.18 V
Oscillator (OSC)
Symbol Parameter Conditions Min. Typ. Max. Unit
FOSC Frequency CT =330 pF, RT = 10
kΩ 200 Khz
Standard deviation of frequency CT =330 pF, RT = 10
kΩ 10
Frequency change with voltage VCC=3.6V ~ 40V 1
TA = -20ºC ~ 25ºC -0.4 ± 2
∆FOSC
Frequency change with temperature TA = 25ºC ~ 85ºC -0.2 ± 2
%
Dead-time control (DTC)
Symbol Parameter Conditions Min. Typ. Max. Unit
IBDT Input bias current 1
IDT Latch mode (source) current TA = 25ºC -80 -145 µA
VDT Latched input voltage IO = 40µA 2.3
VT0 Zero duty cycle 2.05 2.25
VT100 Input threshold voltage at f= 10 Khz Maximum duty cycle 1.2 1.45
V
AP2001
Monolithic Dual Channel PWM Controller
Anachip Corp.
www.anachip.com.tw Rev. 0.3 Feb 20, 2004
5/8
Electrical Characteristics (Continued)
Error-amplifier
Symbol Parameter Conditions Min. Typ. Max. Unit
VIO Input offset voltage VO (FB)=1.25V ±6 mV
IIO Input offset current VO (FB)=1.25V ±100 nA
IIB Input bias current VO (FB)=1.25V 160 500 nA
1.05
to
VCM Common-mode input voltage
range VCC=3.6V ~ 40V
1.45
V
AV Open-loop voltage
amplification RF=200 kΩ 70 80 dB
GBW Unity-gain bandwidth 1.5 MHz
CMRR Common-mode rejection ratio 60 80 dB
VOH Max. output voltage Vref-0.1 V
VOL Min. output voltage 1 V
IOI Output (sink) current (FB) VID = -0.1V, VO = 1.25V 0.5 1.6 mA
IOO Output (source) current (FB) VID = 0.1V, VO = 1.25V -45 -70 µA
Output section
Symbol Parameter Conditions Min. Typ. Max. Unit
ILEAK Leakage current VO = 40V 10 µA
VSAT Output saturation voltage IO = 10 mA 1.2 2 V
ISC Short-circuit output current VO = 6V 90 mA
PWM comparator
Symbol Parameter Conditions Min. Typ. Max. Unit
VT0 Zero duty cycle 2.05 2.25 V
VT100
Input threshold voltage at f =
10 Khz (FB) Maximum duty cycle 1.2 1.45 V
Total device
Symbol Parameter Conditions 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
AP2001
Monolithic Dual Channel PWM Controller
Anachip Corp.
www.anachip.com.tw Rev. 0.3 Feb 20, 2004
6/8
Typical Application Circuit
AP2001
12345678
16 15 14 13 12 11 10 9
C5 R5
33k
33k
500
pF
470
470 470
220 1uF L2
R6
R7
C4
Buck Output
V
ref
33k
500pF
C1
R2
R133k
50k0.47uF
V
CC
200k 470
33k
22k
330pF
150 L1
R3
R4
C2
Boost Output
Note:
Values for R1 through R7 , C1 through C4 , and
L1 and L2 depend upon individual application.
Dual output DC/DC converter
Marking Information
( Top View )
PDIP/SOP
1
9
8
AC
AP2001
YY WW X X
Logo ID code
Year: "01" = 2001
"02" = 2002
Xth week: 01~52
~
16
Part No. Blank: normal
L: Lead Free Package
AP2001
Monolithic Dual Channel PWM Controller
Anachip Corp.
www.anachip.com.tw Rev. 0.3 Feb 20, 2004
7/8
Package Information
(1) Package Type: SOP-16L
E
H
VIEW "A"
L
θ
0.015x45
o
C
7
o
(4X)
VIEW "A"
A
A1
D
B
e
7
o
(4X)
y
A2
Dimensions In Millimeters Dimensions In Inches
Symbol Min. Nom. Max. Min. Nom. Max.
A 1.40 1.60 1.75 0.055 0.063 0.069
A1 0.10 - 0.25 0.040 - 0.010
A2 1.30 1.45 1.50 0.051 0.057 0.059
B 0.33 0.41 0.51 0.013 0.016 0.020
C 0.19 0.20 0.25 0.0075 0.008 0.0098
D 9.80 9.90 10.00 0.386 0.390 0.394
E 3.80 3.90 4.00 0.150 0.154 0.157
e - 1.27 - - 0.050 -
H 5.80 6.00 6.20 0.228 0.236 0.244
L 0.38 0.71 1.27 0.015 0.028 0.050
Θ 0 - 8 0 - 8
AP2001
Monolithic Dual Channel PWM Controller
Anachip Corp.
www.anachip.com.tw Rev. 0.3 Feb 20, 2004
8/8
Package Information (Continued)
(2) Package Type: PDIP-16L
E1
D
7
O
(4X)
A
L
B2 BB1
e
D1
A2
15
O
(4X)
E1
eB
C
DETAIL A
E
0.005
R0.005
eB
DETAIL A
TOP E-PIN INDENT 0.079 inch
BOTTOM 3-PIN INDENT 0.118 inch
Dimensions In Millimeters Dimensions In Inches
Symbol Min. Nom. Max. Min. Nom. Max.
A - - 4.57 - - 0.180
A1 0.38 - - 0.015 - -
A2 3.15 3.33 3.50 0.124 0.131 0.138
B 0.36 0.46 0.56 0.014 0.018 0.022
B1 1.14 1.27 1.52 0.045 0.050 0.060
B2 0.81 0.99 1.17 0.032 0.039 0.046
C 0.20 0.25 0.33 0.008 0.010 0.013
D 18.90 19.10 19.30 0.744 0.752 0.760
D1 0.56 0.69 0.76 0.022 0.027 0.030
E 7.62 - 8.26 0.3000 - 0.325
E1 6.15 6.35 6.55 0.242 0.250 0.258
e - 2.54 - - 0.100 -
L 2.92 - 3.81 0.115 - 0.150
eB 8.38 - 9.40 0.330 - 0.370
