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Advanced Analog Technology, Inc.
AAT1100
Product information presented is current as of publication date. Details are subject to change without notice
TRIPLE-CHANNEL PWM CONTROLLER
Features
Complete PWM Power Control Circuitry Precision ReferenceG 1.25V1% (25 oC) Low Operating VoltageG 2.5V to 7.0V Under-Voltage Lockout Protection Totem Pole Output Output Short Circuit Protection Low Dissipation CurrentG 2.5mA at 500 kHz and 50% Duty Cycle Separate On / Off Control for CH1, CH3 Pair and CH2 (Refer to Function Table) Dead Time ControlG 0 to 100% Wide Operating FrequencyG 50 kHz to 1MHz Minimized External Components
General Description
The AAT1100 provides an integrated triple-channel pulse-width-modulation (PWM) solution for the power supply of DC-DC system; this device offers system engineer the flexibility to custom-make the power supply circuitry to a specific application. Each channel contains its own error amplifier, PWM comparator, dead-time control (DTC) and output driver. The under-voltage protection, oscillator, short circuit protection and voltage reference circuit are common features of the three channels. The AAT1100 contains two boost circuits (CH1, CH3) and a buck-boost circuit (CH2). DTC can be set to provide 0% to 100% dead-time through a divider network. Soft-Start can be implemented by paralleling the DTC resistor with a capacitor. Two DTC inputs are assigned for CH1, CH3 pair and CH2 individually, and DTC inputs can be used to control on / off operation. In addition, this device can operate from 2.5V to 7.0V supply voltages to achieve efficient operation in low power system. With a minimal number of external components, the AAT1100 offers a simple and cost effective solution.
Pin Configuration
TOP VIEW
IE2 OE 2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 OE3 IE3 IE1 OE 1 OSC DTC2 DTC13
VREF
VDD
OUT2 OUT3 OUT1 GND SCP
(TSSOP-16 PACKAGE)
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Advanced Analog Technology, Inc.
AAT1100
Function Table
Condition DTC13 > 0.3V, DTC2 > 0.3V DTC13 > 0.3V, DTC2 < 0.2V DTC13 < 0.2V, DTC2 > 0.3V DTC13 < 0.2V, DTC2 < 0.2V ON ON Output CH1 "High" "High" ON ON CH2 "Low" "Low" OFF "High" OFF "High" CH3 ON "High" ON "High" OFF "Low" OFF "Low"
OFF "Low" OFF "Low"
Pin Description
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name IE2 OE2
VDD
OUT2 OUT3 OUT1 GND SCP VREF DTC13 DTC2 OSC OE1 IE1 IE3 OE3
I/O I I/O I O O O
Description Inverting Input Terminal of Error Amplifier 2 (EA2) Output of Error Amplifier 2 (EA2) Supply Voltage Channel 2 Output Channel 3 Output Channel 1 Output Ground I Short Circuit Protection O Reference Voltage Output I Dead-Time Control of Channel 1, 3 (CH1, CH3) I Dead-Time Control of Channel 2 (CH2) I Frequency Setting Capacitor & Resistor Input I/O Output of Error Amplifier 1 (EA1) I Inverting Input Terminal of Error Amplifier 1 (EA1) I Inverting Input Terminal of Error Amplifier 3 (EA3) I/O Output of Error Amplifier 3 (EA3)
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Advanced Analog Technology, Inc.
AAT1100
Absolute Maximum Ratings
Characteristics Supply Voltage Input Voltage (IE1, IE2, IE3, DTC13, DTC2) Symbol VDD VI VO Value 8
VDD VDD +0.3
Unit V V
Output Voltage Output Current Output Peak Current Source ( t O w Sink ( t w O CH1, CH3 CH2
2s , DutyO 2s , DutyO
IO 10%)
- 41 / + 21 - 21 / + 41
V mA mA mA
o o
10%)
Iopeak
TC
Tstorage
+200
- 200 - 20 to + 85 - 45 to + 125
Operating Temperature Range Storage Temperature Range
C C
Recommended Operating Conditions
Supply Voltage, VDD Input Voltage, IE1, IE3 Input Voltage, IE2 Output Voltage Oscillator (OSC) Capacitance Oscillator (OSC) Resistance (Note 1) Oscillator (OSC) Frequency Output Current (CH1, CH3) Output Current, (CHl, CH2) Output Current of Error Amplifier 1, 2 and 3 (EA1, EA1, EA3) Operating Temperature
Symbol VDD VI13 Min 2.5 Max 7.0 Unit V
0.95 0.4 0 10 6 50
1.55 1.0 VDD 1,800 8 1,000
- 40 / + 20 - 20 / + 40
V V V pF k[ kHz mA mA A
o
VI 2 VO C OSC R OSC f OSC I O13 I O2 I OE TC
60
- 20
85
C
Note 1: The rise and fall times of oscillator wave form will be equal at OSC resistor ( R OSC ) =7 k theoretically.
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Advanced Analog Technology, Inc.
AAT1100
Electrical Characteristics, VDD = 3.3V ; TC = 25 oC (Unless Otherwise Specified)
Oscillator Parameter Test Condition C OSC = 130pF, R OSC = 7 k Min Typ Max Unit
Oscillator Frequency Oscillator Output Voltage at High Oscillator Output Voltage at Low Frequency Change with VDD Frequency Change with Temperature Oscillator Output Current
Under-Voltage Protection Parameter Upper Threshold Voltage
f OSC VOSCH VOSCL f V f T I OSC
400 0.95 0.35
500 1.00 0.40
600 1.05 0.45
kHz V V
C OSC = 130pF, R OSC = 7 k C OSC = 130pF, R OSC = 7 k VDD = 2.5V to 7V, C OSC = 130pF, R OSC = 7 k (Note 2)
1 5
- 180
2 10
% %
A
- 200 - 220
Test Condition
VUPH VUPL VHYS
Min 2.2
Typ 2.3
Max Unit 2.4 V
Lower Threshold Voltage Hysteresis ( VUPH - VUPL )
Short Circuit Protection Control Parameter
2.0 0.1
2.1 0.2
2.2 0.3
V V
Input Threshold Voltage Latch Reset Threshold Voltage Short Circuit Detect Threshold Voltage SCP Terminal Source Current
Vr1 Vr 2 VR Vr 3 I SCP
Test Condition CH1, CH3 CH2
Min 1.10 0.20
Typ 1.15 0.25
Max Unit 1.20 V 0.30
0.8 1.20
- 1.4
1.5 1.25
- 2.0
1.8 1.30
- 2.6
V V
A
Note 2: The deviation is defined as the difference between the maximum and minimum values obtained over the recommended temperature range (-20 oC to 85 oC).
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Advanced Analog Technology, Inc.
AAT1100
Electrical Characteristics, VDD = 3.3V; TC = 25 oC (Unless Otherwise Specified) (Cont.)
Reference Voltage Parameter Reference Voltage Test Conditions I REF = -1mA Min Typ Max Unit 1.237 1.250 1.263 V
-2 - 10 - 30
Short Circuit Output Current Input Voltage Regulation Output Regulation Reference Voltage Change with Temperature
EA (Error Amplifier) Parameter
VREF I OS VRI VRO VR
VREF = 0 I REF = -1mA , VDD = 2.5V to 7V I REF = -0.1mA to - 1mA I REF = -1mA (Note 3)
mA mV mV mV
2 1 15
5 5 25
Input Offset Voltage Input Bias Current Input Voltage Range Open-Loop Voltage Gain Unity-Gain Bandwidth
VIO I IB VIR A VO BW1 VOS +
Test Condition CH1,CH3, Unity Gain
Min
Typ
Max
Unit
15 10 10 0.95 0.4 60 1 20 20 1.55 1.0
mV nA V dB MHz
CH1,CH3, VI13 = 0.95V to 1.55V CH2, VI 2 = 0.4V to 1.0V CH1, CH3 CH2 R OE = 200 k VI = +0.1V , I O = -60A
VI = -0.1V , I O = 0.2mA VI = -0.1V , VO = 0.2V VI = +0.1V , VO = 1.2V
1.2 V 0.2 0.2
- 60
Output Voltage Swing VOS - Output Sink Current Output Source Current Input Bias Voltage I OS + I OS - Vr 5
1.0
- 100
mA
A
CH2, Unity Gain, TC = 25 oC CH2, Unity Gain
678 665
700 700
722 735
mV
Note 3: The parameter VR is defined as the difference between the maximum and minimum values obtained over the recommended temperature range (-20 oC to 85 oC).
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Advanced Analog Technology, Inc.
AAT1100
Electrical Characteristics, VDD = 3.3V; TC = 25 oC (Unless Otherwise Specified) (Cont.)
Dead-Time Control Parameter Test Condition VDTC13 = 0.35V to 1.05V Min Typ Max Unit
Input Bias Current Input Threshold Voltage (DTC 13) Input Threshold Voltage (DTC2) Channel On / Off Threshold Voltage
Output Stage Parameter
I BDT1/ 3 I BDT 2 V13d100 V2 d 0 V2 d100 Vr 4
200 2 0.3 0.9 0.3 0.9 0.2 0.4 1.0 0.4 1.0 0.25 20 0.5 1.1 0.5 1.1 0.3
nA nA V
VDTC 2 = 0.35V to 1.05V Duty = 100%, f OSC = 500kHz Duty = 0%, f OSC = 500kHz Duty = 100%, f OSC = 500kHz
V13d 0 Duty = 0%, f OSC = 500kHz
V V
High-Level Output Voltage Low-Level Output Voltage Rise Time Fall Time
Operating Current Parameter
VOH VOL t RISE t FALL
Test Condition I O = -20mA (CH2)
Min
Typ
Max Unit
2.90 1.9
3.05 2.2 0.2 0.3 130 50 0.4 0.6 V ns ns V
I O = -40mA (CH1, CH3) I O = 20mA (CH1, CH3) I O = 40mA (CH2) C L = 1,000pF C L = 1,000pF
I DD-OFF Supply Current I DD-ON
Test Condition Output "OFF" State
Min
Typ
Max Unit
2.5 3.5
4.0 5.0
mA mA
f OSC = 500 kHz, Duty = 50%, No Load
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Advanced Analog Technology, Inc.
AAT1100
Block Diagram
E N 13
OE1 IE 1
V r e f = 1 .2 5V
EA1 PW M C1
L a tch
OUT1
EN2 L a tch
OE2 IE 2
V r 5 = 0 .7 V
EA2 PW M C2
OUT2
EN 13 L a tch
OE3 IE 3
V R E F = 1 . 2 5V
EA3 PW M C3
O UT3 O SC
V
REF
V
VREF
REF
O SC
UVC
UVLO
VD D
GND
UVC
UVC D T C 2N L a tc h
UVCN
SC P
R
R
V r 5 = 0 .7 V
VDD
2A
V r 3 = 1 .2 5V
E N 13
Vr4 =
SC P
D TC 13
0 .2 5 V
OE1
V r 1 = 1 .1 5V
OE3
UVCN OE2
V r 2 = 0 . 2 5V
DTC2
V r 4 = 0 .2 5 V
EN2 UVCN
Note: All voltage and current values in block diagram are nominal.
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Advanced Analog Technology, Inc.
AAT1100
Application Circuit
V
DD
V
DD
V p1 R R C C IE 1 R OE1
L
V DD
OUT1 Q
D
Vp1
C
V
V p3 R R C C IE 3 R O UT3 OE3
DD
L
D
Vp3
Q
C
A A T1100
V
VN2 OE2 R R C C IE 2 R
C
VREF
DD
OUT2
Q D
Vn2
L C
V
R EF
V
REF
R D TC 13 O SC SC P C O SC R O SC DTC2 R GND
SCP
C
C
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Advanced Analog Technology, Inc.
AAT1100
Timing Chart
V U PH
V DD
V DD
1 .2 5V
V REF
O E1 or O E3 O S C + (N ote 4 ) DTC 13
V DD
1 .0V O E1 or O E3 O SC D TC 13 O U T 1 or OUT3 0 .4V
Vr1 = 1.15V
V D T C 13
VOH
10 0 % o ff VOL
V O ( reg )
R egula tion O utp u t 0V
Vr 3
SCP
1.25V
t scp
t scp (S h o rt C ircu it P r otect T im e)= 0 .6 25 * C scp .* 10 6 (sec)
0V
T im in g C h a rt for C H 1 o r C H 3
N ote 4 : + O scilla to r w av e fo rm is illustrated as a tria ngle w a ve fo rm . H ow ever it is actu ally d eterm in ed b y tim e co nstan t o f tim in g resistor an d ca p acitor co n nected to O S C term in a l.
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Advanced Analog Technology, Inc.
AAT1100
Timing Chart
V U PH
VD D
VD D
1 .2 5 V
VREF
DTC2 OE2 O SC D T C 2N OUT2 1 .0 V 0 .4 V DTC2N OE2 O S C + (N o te 4 )
DTC2
D TC 2N
Vr 2 = 0.2 5V
0V
VO H
1 0 0 % o ff
VO L
R e g u la tio n O u tp u t 0V
- V o(reg)
Vr 3
SCP
t s c p (S h o r t C ir c u it P r o te c t T im e )= 0 .6 2 5 * C sc p .* 1 0 6 (s e c ) t sc p
1 .2 5 V
0V
T im in g C h a r t fo r C H 2
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Advanced Analog Technology, Inc.
AAT1100
Package Dimension
16-PIN TSSOP
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Advanced Analog Technology, Inc.
AAT1100
Package Dimension (Cont.)
SYMBOLS A A1 A2 b C D E E1 e L y
DIMENSIONS IN MILLIMETERS MIN 1.05 0.05 -----0.20 -----4.900 6.20 4.30 -----0.50 -----TYP 1.10 0.10 1.00 0.25 0.127 5.075 6.40 4.40 0.65 0.60 -----MAX 1.20 0.15 1.05 0.28 -----5.100 6.60 4.50 -----0.70 0.076
DEMINSIONS IN INCHES MIN 0.041 0.002 -----0.008 -----0.1930 0.244 0.170 -----0.020 -----TYP 0.043 0.004 0.039 0.010 0.005 0.1998 0.252 0.173 0.026 0.024 -----MAX 0.047 0.006 0.041 0.011 -----0.2000 0.260 0.177 -----0.028 0.003
0
o
4
o
8
o
0
o
4
o
8o
NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS 2. LEAD FRAME MATERIAL: OLIN C7025/EFTEC 64T 3. DIMENSION "D" DOES NOT INCLUDE MOLD FLASH, TIE BAR BURRS AND GATE BURRS. MOLD FLASH, TIE BAR BURRS AND GATE BURRS SHALL NOT EXCEED 0.006" [0.15 MILLIMETERS] PER END. DIMENSION "E1" DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" [0.25 MILLIMETERS] PER SIDE. 4. DIMENSION "b" DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.003" [0.08 MILLIMETERS] TOTAL IN EXCESS OF THE "b" DIMENSION AT MAXIMUM MATERIAL CONDITION. DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND AN ADJACENT LEAD TO BE 0.0028" [0.07 MILLIMETERS]. 5. TOLERANCE: 0.010 [0.25 MILLIMETERS] UNLESS OTHERWISE SPECIFIED. 6. OTHERWISE DIMENSION FOLLOW ACCEPTABLE SPEC. 7. REFERENCE DOCUMENT: JEDEC SPEC MO-153.
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AAT1100
Tape and Reel
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Advanced Analog Technology, Inc.
AAT1100
Tape and Reel (Cont.)
NOTE: 1. 2. 3. 4. 5. 6.
10 SPROCKET HOLE PITCH CUMULATIVE TOLERANCE 0.2 MILLIMETERS. CAMBER NOT TO EXCEED 1 MILLIMETER IN 100 MILLIMETERS. MATERIAL: ANTI-STATIC BLACK ADVANTEK POLYSTYRENE. A 0 AND B 0 MEASURED ON A PLANE 0.3 MILLIMETERS ABOVE THE BOTTOM OF THE POCKET. K 0 MEASURED FROM A PLANE ON THE INSIDE BOTTOM OF THE POCKET TO THE TOP SURFACE OF THE CARRIER. POCKET POSITION RELATIVE TO SPROCKET HOLE MEASURED AS TRUE POSITION OF POCKET, NOT POCKET HOLE.
Part Marking
TSSOP16 Top Marking
AAT1100 XXXXXX
TSSOP16 Back Marking
YYWW
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Advanced Analog Technology, Inc.
AAT1100
Ordering Information
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