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AP2001
Monolithic Dual Channel PWM Controller 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
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.
Applications
- Backlight inverter - DC/DC converts in computers, etc.
Pin Assignments
( Top View ) CT RT EA1+ EA1FB1 DTC1 OUT1 GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10
Pin Descriptions
Name
REF SCP EA2+ EA2FB2 DTC2 OUT2 VCC
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
CT RT EA+ EA FB DTC OUT
9
PDIP/SOP
GND VCC SCP REF
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
AP2001
Monolithic Dual Channel PWM Controller Ordering Information
AP2001 X X X
Package N: PDIP-16L S: SOP-16L
Lead Free Blank : Normal L : Lead Free Package
Packing Blank: Tube A : Taping
Block Diagram
VCC SCP RT CT DTC1
REF
Bandgap Reference
Oscillator
MAX.500KHz
EA1 + EA1 VREF Error Amplifier 1 170K FB1 1.18V EA2+ EA2 Error Amplifier 2 FB2 + + UVLO R R S
+ + PWM Amplifier 1
OUT1
+ + PWM Amplifier 2
OUT2
GND
DTC2
Anachip Corp. www.anachip.com.tw 2/8
Rev. 0.3
Feb 20, 2004
AP2001
Monolithic Dual Channel PWM Controller Absolute Maximum Ratings
Symbol VCC VI VO Io TOP TST TLEAD Supply voltage Amplifier input voltage Collector output voltage Collector output current Operating temperature range Storage temperature range Lead temperature 1.6 mm(1/16 inch) from case for 10 seconds Parameter Rating 40 20 40 21 -20 to +85 -65 to +150 260 Unit V V V mA
o o o
C C C
Recommended Operating Conditions
Symbol VCC VI VO IO IFB RF CT RT FOSC TOP 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 100 150 5.1 1 -20 15000 100 500 85 Parameter Min. 3.6 1.05 Max. 40 1.45 40 20 45 Unit V V V mA A k pF k Khz C
Anachip Corp. www.anachip.com.tw 3/8
Rev. 0.3
Feb 20, 2004
AP2001
Monolithic Dual Channel PWM Controller Electrical Characteristics (T =25C, V
A
CC
=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) Short-circuit protection (SCP) control Symbol Parameter VIT Input threshold voltage VSTB Standby voltage VLT Latched input voltage ISCP Input (source) current VCT Comparator threshold voltage (FB) Oscillator (OSC) Symbol Parameter
Conditions IO = 1mA TA = -20C ~ 25C TA = 25C ~ 85C VCC=3.6V ~ 40V IO=0.1 mA ~ 1mA VO=0 Conditions IO(REF) = 0.1mA TA = 25C Conditions TA = 25C No pull up No pull up VI = 0.7V, TA = 25C
Min. 2.4
3 Min.
Typ. 2.5 -0.1 -0.2 2 1 10 Typ. 2.65 2.45 200 Typ. 0.7 185 60 -15 1.18 Typ. 200 10 1 -0.4 -0.2
Max. 2.6 1 1 12.5 7.5 30 Max.
Unit V % % mV mV mA Unit V V mV Unit V mV mV A V Unit Khz
80 Min. 0.65 140 -10
Max. 0.75 230 120 -20
Conditions CT =330 pF, RT = 10 FOSC Frequency k CT =330 pF, RT = 10 Standard deviation of frequency k Frequency change with voltage VCC=3.6V ~ 40V FOSC TA = -20C ~ 25C Frequency change with temperature TA = 25C ~ 85C Dead-time control (DTC) Symbol Parameter Conditions IBDT IDT VDT VT0 VT100 Input bias current Latch mode (source) current Latched input voltage Input threshold voltage at f= 10 Khz TA = 25C IO = 40A Zero duty cycle Maximum duty cycle
Min.
Max.
% 2 2 Max. 1 Unit A
Min. -80 2.3
Typ. -145 2.05
2.25
V
1.2
1.45
Anachip Corp. www.anachip.com.tw 4/8
Rev. 0.3
Feb 20, 2004
AP2001
Monolithic Dual Channel PWM Controller Electrical Characteristics (Continued)
Error-amplifier Symbol Parameter VIO Input offset voltage IIO Input offset current IIB Input bias current VCM AV GBW CMRR VOH VOL IOI IOO Output section Symbol ILEAK VSAT Conditions VO (FB)=1.25V VO (FB)=1.25V VO (FB)=1.25V Min. Typ. Max. 6 100 500 Unit mV nA nA V 80 1.5 80 1 0.5 -45 Min. 1.6 -70 Typ. 1.2 90 Min. 1.2 Min. Typ. 2.05 1.45 Typ. 2.5 2.8 Max. 3.0 3.5 Max. 2.25 Max. 10 2 dB MHz dB V V mA A Unit A V mA Unit V V Unit mA mA
160 1.05 to 1.45 70 60 Vref-0.1
Common-mode input voltage VCC=3.6V ~ 40V range Open-loop voltage RF=200 k 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 Parameter Leakage current Output saturation voltage Conditions VO = 40V IO = 10 mA VO = 6V Conditions Zero duty cycle Maximum duty cycle Conditions Off-state RT = 10 k
ISC Short-circuit output current PWM comparator Symbol Parameter VT0 VT100 Total device Symbol ICCS ICCA Input threshold voltage at f = 10 Khz (FB) Parameter Standby supply current Average supply current
Anachip Corp. www.anachip.com.tw 5/8
Rev. 0.3
Feb 20, 2004
AP2001
Monolithic Dual Channel PWM Controller Typical Application Circuit
VCC 200k 470 150 L1
0.47uF
50k 33k R1 R2
Boost Output
33k 330pF R3 C2 22k C1 500pF R4
33k
V ref
16 15 14
13
12
11
10
9
Note: Values for R1 through R7 , C1 through C4 , and L1 and L2 depend upon individual application.
AP2001
1 2 3 4 5 6 7 8
470 C5 R5 500 pF
470
220
1uF
L2 R6
Buck Output
33k
33k
470
C4 R7
Dual output DC/DC converter
Marking Information
( Top View )
16 9
Logo Part No.
AC AP2001 YY WW X X
1 8
ID code Blank: normal L: Lead Free Package Xth week: 01~52 Year: "01" = 2001 "02" = 2002 ~
PDIP/SOP
Anachip Corp. www.anachip.com.tw 6/8
Rev. 0.3
Feb 20, 2004
AP2001
Monolithic Dual Channel PWM Controller Package Information
(1) Package Type: SOP-16L
E
H
L VIEW "A"
7o(4X)
D 0.015x45o A2 A 7o(4X)
A1
y
Symbol A A1 A2 B C D E e H L
Dimensions In Millimeters Min. Nom. Max. 1.40 1.60 1.75 0.10 0.25 1.30 1.45 1.50 0.33 0.41 0.51 0.19 0.20 0.25 9.80 9.90 10.00 3.80 3.90 4.00 1.27 5.80 6.00 6.20 0.38 0.71 1.27 0 8
Dimensions In Inches Min. Nom. Max. 0.055 0.063 0.069 0.040 0.010 0.051 0.057 0.059 0.013 0.016 0.020 0.0075 0.008 0.0098 0.386 0.390 0.394 0.150 0.154 0.157 0.050 0.228 0.236 0.244 0.015 0.028 0.050 0 8
Anachip Corp. www.anachip.com.tw 7/8
C
e
B
VIEW "A"
Rev. 0.3
Feb 20, 2004
AP2001
Monolithic Dual Channel PWM Controller Package Information (Continued)
(2) Package Type: PDIP-16L
D
E1
TOP E-PIN INDENT
0.079 inch
BOTTOM 3-PIN INDENT
0.118 inch
E1 0.005
Feb 20, 2004
7 (4X)
O
15O (4X)
E
A
A2
C L B2 D1 e B1
R0.005 eB eB DETAIL A DETAIL A
B
Symbol A A1 A2 B B1 B2 C D D1 E E1 e L eB
Dimensions In Millimeters Min. Nom. Max. 4.57 0.38 3.15 3.33 3.50 0.36 0.46 0.56 1.14 1.27 1.52 0.81 0.99 1.17 0.20 0.25 0.33 18.90 19.10 19.30 0.56 0.69 0.76 7.62 8.26 6.15 6.35 6.55 2.54 2.92 3.81 8.38 9.40
Dimensions In Inches Min. Nom. Max. 0.180 0.015 0.124 0.131 0.138 0.014 0.018 0.022 0.045 0.050 0.060 0.032 0.039 0.046 0.008 0.010 0.013 0.744 0.752 0.760 0.022 0.027 0.030 0.3000 0.325 0.242 0.250 0.258 0.100 0.115 0.150 0.330 0.370
Anachip Corp. www.anachip.com.tw 8/8
Rev. 0.3

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