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TL1453C
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
D
Complete PWM Power Control Circuitry
D
Completely Synchronized Operation
D
Internal Undervoltage Lockout Protection
D
Wide Supply Voltage Range
D
Oscillator Frequency...500 kHz Max
D
Variable Dead Time Provides Control
Over Total Range
D
Internal Regulator Provides a Stable 2.5-V
Reference Supply
ERROR IN+
AMPLIFIER 1 IN–
1 FEEDBACK
1 DEAD-TIME CONTROL
1 OUTPUT
N OR NS PACKAGE
(T0P VIEW)
1
C
T
2
R
T
GND
3
4
5
6
7
8
{
REF
16
SCP
15
IN+ ERROR
14
13
12
11
10
}
IN– AMPLIFIER 2
2 FEEDBACK
2 DEAD-TIME CONTRO
2 OUTPUT
V
9
CC
description
The TL1453C incorporates the functions required in the construction of two pulse-width-modulation control
circuits on a single monolithic chip. Designed primarily for power supply control, the TL1453C contains an
on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator , two dead-time comparators, undervoltage
lockout circuitry, and dual common-emitter output transistor circuits.
The uncommitted output transistors provide common-emitter output capability for each controller. The internal
amplifiers exhibit a common-mode voltage range from 1.05 V to 1.45 V . The dead-time control comparator has
no offset unless externally altered and may be used to provide 0% to 100% dead time. The on-chip oscillator
may be operated by terminating R
control circuit feature inhibits the output until the internal circuitry is operational.
The TL1453C is characterized for operation from –20°C to 85°C.
(pin 2) and CT (pin 1). During low-VCC conditions, the undervoltage lockout
T
functional block diagram
V
= 2.5 V
ref
16
REF
Error Amp.1
3
1 IN+
4
1 IN–
2 IN+
2 IN–
SCP
5
12
14
13
15
Error Amp.2
1 FEEDBACK
2 FEEDBACK
†
UVLO = Undervoltage Lockout Protection
V
CC
9
Reference
Voltage
2.5 V
C
R
T
T
12
Triangle
Oscillator
2 V
1.4 V
2.5 V
2.5 V
†
UVLO
1 DEAD-TIME CONTROL 2 DEAD-TIME CONTROL
PWM Comparator 1
1
2
PWM Comparator 2
116
8
GND
7
10
1 OUTPUT
2 OUTPUT
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1990, Texas Instruments Incorporated
1
TL1453C
Output voltage change with temperature
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
(see Note 1) 41 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
Amplifier input voltage 20 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector output voltage 51 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector output current 21 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
–20°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTE 1: All voltage values are with respect to network ground terminal.
DISSIPATION RATING TABLE
PACKAGE
N 1000 mW 8 mW/°C 520 mW
NS 725 mW 5.8 mW/°C 397 mW
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 85°C
POWER RATING
recommended operating conditions
MIN MAX UNIT
Supply voltage, V
Amplifier input voltage, V
Collector output voltage, V
Collector output current 20 mA
Current into feedback terminal 45 µA
Feedback resistor, R
Timing capacitor , C
Timing resistor , R
Oscillator frequency 1 500 kHz
Operating free-air temperature, T
CC
I
O
F
T
T
A
3.6 40 V
1.05 1.45 V
50 V
100 kΩ
150 15000 pF
5.1 100 kΩ
–20 85 °C
electrical characteristics over recommended operating free-air temperature range, VCC = 6 V,
f = 200 kHz (unless otherwise noted)
reference section
Output voltage (pin 16) IO = 1 mA 2.4 2.5 2.6 V
p
Input regulation VCC = 3.6 V to 40 V 2 12.5 mV
Output regulation IO = 0.1 mA to 1 mA 1 7.5 mV
Short-circuit output current VO = 0 3 10 30 mA
†
All typical values are at TA = 25°C.
2
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
p
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TA = –20°C to 25°C –0.1% ±1%
TA = 25°C to 85°C –0.2% ±1%
Frequency change with tem erature
I
10kHz (pi
11)
V
1.05
gg
CC
Collector off-state current
A
TL1453C
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
electrical characteristics over recommended operating free-air temperature range, VCC = 6 V,
f = 200 kHz (unless otherwise noted) (continued)
undervoltage lockout section
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
Upper threshold voltage (pin 9) I
Lower threshold voltage (pin 9) I
Hysteresis (pin 9) I
oscillator section
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
Frequency CT = 330 pF, RT = 10 kΩ 200 kHz
Standard deviation of frequency VCC, TA, RT, CT values are constant 10%
Frequency change with voltage VCC = 3.6 V to 40 V 1%
p
TA = –20°C to 25°C –0.4% ±2%
TA = 25°C to 85°C –0.2% ±2%
dead-time control section
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
Input bias current (pins 6 and 11) 1 µA
nput threshold voltage at f =
ns 6 and
= 0.1 mA, TA = 25°C 2.72 V
Oref
= 0.1 mA, TA = 25°C 2.6 V
Oref
= 0.1 mA, TA = 25°C 80 120 mV
Oref
Zero duty cycle 2.05 2.25
Maximum duty cycle 1.2 1.45
error-amplifier section
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
Input offset voltage VO (pins 5 and 12) = 1.25 V ±6 mV
Input offset current VO (pins 5 and 12) = 1.25 V ±100 nA
Input bias current VO (pins 5 and 12) = 1.25 V 160 500 nA
Common-mode input voltage range VCC = 3.6 V to 40 V
Open-loop voltage amplification RF = 200 kΩ 70 80 dB
Unity-gain bandwidth 1.5 MHz
Common-mode rejection ratio 60 80 dB
Positive output voltage swing V
Negative output voltage swing 1 V
Output (sink) current (pins 5 and 12) VID = –0.1 V, VO = 1.25 V 0.5 1.6 mA
Output (source) current (pins 5 and 12)
VID = 0.1 V, VO = 1.25 V
1.05
to
1.45
–0.1 V
ref
–45 –70 µA
output section
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
VCC = 0, VO = 50 V 10
VO = 50 V 10
Output saturation voltage IO = 10 mA 1.2 2 V
Short-circuit output current VO = 6 V 90 mA
†
All typical values are at TA = 25°C.
V
µ
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
TL1453C
Input threshold voltage at f
(pins 5 and 12)
V
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
electrical characteristics over recommended operating free-air temperature range, VCC = 6 V,
f = 200 kHz (unless otherwise noted) (continued)
pwm comparator section
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
p
Input (sink) current (pins 5 and 12) VI = 1.25 V 0.5 1.6 mA
Input (source) current (pins 5 and 12) VI = 1.25 V –45 –70 µA
= 10 kHz
p
total device
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
Standby supply current Off-state 1.3 1.8 mA
Average supply current RT = 10 kΩ 1.7 2.4 mA
†
All typical values are at TA = 25°C.
test circuit
Zero duty cycle 2.05 2.25
Maximum duty cycle 1.2 1.45
C
330 pF
TEST
INPUT
1
C
T
T
10 kΩ
2
R
R
T
T
3
IN+1
4
IN–1
5
1 FEEDBACK
1 DEAD-TIME
6
CONTROL
7
1 OUTPUT
8
GND
TL1453C
2 FEEDBACK
2 DEAD-TIME
CONTROL
2 OUTPUT
REF
SCP
IN+2
IN–2
V
CC
16
15
14
13
12
11
10
9
0.1 µF
TEST
INPUT
OUTPUT 2
R
L
V
CC
R
L
OUTPUT 1
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL1453C
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE
16 PIN SHOWN
16
1
0.035 (0,89) MAX
PINS **
DIM
A
9
0.260 (6,60)
0.240 (6,10)
8
0.070 (1,78) MAX
0.020 (0,51) MIN
0.200 (5,08) MAX
A MAX
A MIN
Seating Plane
14
0.775
(19,69)
0.745
(18,92)
16
0.775
(19,69)
0.745
(18,92)
18
0.920
(23.37)
0.850
(21.59)
20
0.975
(24,77)
0.940
(23,88)
0.310 (7,87)
0.290 (7,37)
0.100 (2,54)
0.021 (0,53)
0.015 (0,38)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001 (20 pin package is shorter then MS-001.)
0.010 (0,25)
M
0.125 (3,18) MIN
0°–15°
0.010 (0,25) NOM
14/18 PIN ONL Y
4040049/C 08/95
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
TL1453C
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
NS (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
14 PIN SHOWN
1,27
14
PINS **
DIM
0,51
0,35
8
5,60
5,00
1
A
7
0,25
M
8,20
7,40
A MAX
A MIN
10,501410,50
9,90 9,90
0,15 NOM
Gage Plane
0°–10°
16
20 24
15,3012,90
12,30 14,70
0,25
1,05
0,55
2,00 MAX
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion, not to exceed 0,15.
0,05 MIN
Seating Plane
0,10
4040062/B 02/95
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
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DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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Copyright 1998, Texas Instruments Incorporated
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