TL594 반도체 회로 부품 판매점
PRECISION SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT
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 Motorola Inc |
Order this document by TL594/D
Precision Switchmode
Pulse Width Modulation
Control Circuit
The TL594 is a fixed frequency, pulse width modulation control circuit
designed primarily for Switchmode power supply control.
• Complete Pulse Width Modulation Control Circuitry
• On–Chip Oscillator with Master or Slave Operation
• On–Chip Error Amplifiers
• On–Chip 5.0 V Reference, 1.5% Accuracy
• Adjustable Deadtime Control
• Uncommitted Output Transistors Rated to 500 mA Source or Sink
• Output Control for Push–Pull or Single–Ended Operation
• Undervoltage Lockout
TL594
PRECISION SWITCHMODE
PULSE WIDTH MODULATION
CONTROL CIRCUIT
SEMICONDUCTOR
TECHNICAL DATA
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
N SUFFIX
PLASTIC PACKAGE
CASE 648
PIN CONNECTIONS
MAXIMUM RATINGS (Full operating ambient temperature range applies,
unless otherwise noted.)
Rating
Symbol
Value
Unit
Power Supply Voltage
Collector Output Voltage
Collector Output Current
(each transistor) (Note 1)
VCC
VC1,
VC2
IC1, IC2
42
42
500
V
V
mA
Amplifier Input Voltage Range
Power Dissipation @ TA ≤ 45°C
Thermal Resistance,
Junction–to–Ambient
VIR
PD
RθJA
–0.3 to +42
1000
80
V
mW
°C/W
Operating Junction Temperature
Storage Temperature Range
Operating Ambient Temperature Range
TL594ID, CN
TL594CD, IN
TJ
Tstg
TA
125
–55 to +125
0 to +70
–25 to +85
°C
°C
°C
Derating Ambient Temperature
TA
NOTES: 1. Maximum thermal limits must be observed.
45 °C
Noninv
Input
1
Inv
Input
2
+
Error
–Amp
1
Compen/PWN
Comp Input
3
Deadtime
Control
4
≈ 0.1 V
+
2
Error
Amp–
VCC
5.0 V
REF
16
Noninv
Input
15
Inv
Input
14 Vref
13
Output
Control
CT 5
RT 6
Ground 7
Oscillator
12 VCC
11 C2
Q2
10 E2
C1 8
Q1
9 E1
(Top View)
ORDERING INFORMATION
Device
TL594CD
TL594CN
TL594IN
Operating
Temperature Range
TA = 0° to +70°C
TA = – 25° to +85°C
Package
SO–16
Plastic
Plastic
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1
TL594
RECOMMENDED OPERATING CONDITIONS
Characteristics
Power Supply Voltage
Collector Output Voltage
Collector Output Current (Each transistor)
Amplified Input Voltage
Current Into Feedback Terminal
Reference Output Current
Timing Resistor
Timing Capacitor
Oscillator Frequency
PWM Input Voltage (Pins 3, 4, 13)
Symbol
VCC
VC1, VC2
IC1, IC2
Vin
lfb
lref
RT
CT
fosc
–
Min
7.0
–
–
0.3
–
–
1.8
0.0047
1.0
0.3
Typ
15
30
–
–
–
–
30
0.001
40
–
Max
40
40
200
VCC – 2.0
0.3
10
500
10
200
5.3
Unit
V
V
mA
V
mA
mA
kΩ
µF
kHz
V
ELECTRICAL CHARACTERISTICS (VCC = 15 V, CT = 0.01 µF, RT = 12 kΩ, unless otherwise noted.)
For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies, unless otherwise noted.
Characteristics
Symbol
Min
Typ
Max Unit
REFERENCE SECTION
Reference Voltage
(IO = 1.0 mA, TA = 25°C)
(IO = 1.0 mA)
Line Regulation (VCC = 7.0 V to 40 V)
Load Regulation (IO = 1.0 mA to 10 mA)
Short Circuit Output Current (Vref = 0 V)
OUTPUT SECTION
Collector Off–State Current (VCC = 40 V, VCE = 40 V)
Emitter Off–State Current (VCC = 40 V, VC = 40 V, VE = 0 V)
Collector–Emitter Saturation Voltage (Note 2)
Common–Emitter (VE = 0 V, IC = 200 mA)
Emitter–Follower (VC = 15 V, IE = –200 mA)
Output Control Pin Current
Low State (VOC ≤ 0.4 V)
High State (VOC = Vref)
Output Voltage Rise Time
Common–Emitter (See Figure 13)
Emitter–Follower (See Figure 14)
Output Voltage Fall Time
Common–Emitter (See Figure 13)
Emitter–Follower (See Figure 14)
Vref V
4.925 5.0 5.075
4.9 – 5.1
Regline
–
2.0 25 mV
Regload
–
2.0 15 mV
ISC 15 40 75 mA
IC(off)
IE(off)
VSAT(C)
VSAT(E)
IOCL
IOCH
tr
tf
–
–
–
–
–
–
–
–
–
–
2.0 100 µA
–
–100
µA
V
1.1 1.3
1.5 2.5
µA
0.1 –
2.0 20
ns
100 200
100 200
ns
40 100
40 100
ERROR AMPLIFIER SECTION
Input Offset Voltage (VO (Pin 3) = 2.5 V)
VIO – 2.0 10
Input Offset Current (VO (Pin 3) = 2.5 V)
IIO – 5.0 250
Input Bias Current (VO (Pin 3) = 2.5 V)
Input Common Mode Voltage Range (VCC = 40 V, TA = 25°C)
IIB
VICR
– –0.1 –1.0
0 to VCC–2.0
Inverting Input Voltage Range
VIR(INV)
–0.3 to VCC–2.0
Open Loop Voltage Gain (∆VO = 3.0 V, VO = 0.5 V to 3.5 V, RL = 2.0 kΩ)
AVOL
70
95
–
Unity–Gain Crossover Frequency (VO = 0.5 V to 3.5 V, RL = 2.0 kΩ)
Phase Margin at Unity–Gain (VO = 0.5 V to 3.5 V, RL = 2.0 kΩ)
fC – 700 –
φm – 65 –
Common Mode Rejection Ratio (VCC = 40 V)
CMRR
65
90
–
Power Supply Rejection Ratio (∆VCC = 33 V, VO = 2.5 V, RL = 2.0 kΩ)
PSRR
–
100
–
Output Sink Current (VO (Pin 3) = 0.7 V)
IO– 0.3 0.7
–
Output Source Current (VO (Pin 3) = 3.5 V)
IO+ –2.0 –4.0
–
NOTE: 2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
mV
nA
µA
V
V
dB
kHz
deg.
dB
dB
mA
mA
2 MOTOROLA ANALOG IC DEVICE DATA
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