Материал: TL594
TL594
Figure 5. Percent Deadtime versus
Oscillator Frequency
OUTPUT) |
20 |
|
|
|
|
18 |
|
|
|
|
|
16 |
|
|
|
|
|
(EACH |
|
CT = 0.001 |
μF |
||
14 |
|
||||
|
|
|
|
||
DEADTIME |
12 |
|
|
|
|
10 |
|
|
|
|
|
8.0 |
|
|
|
|
|
PERCENT |
|
|
|
|
|
6.0 |
|
0.01 |
μF |
|
|
4.0 |
|
|
|||
|
|
|
|
||
|
|
|
|
|
|
% DT, |
2.0 |
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
|
|
|
500 k |
1.0 k |
10 k |
100 k |
500 k |
|
|
|
fosc, OSCILLATOR FREQUENCY (Hz) |
|
|
Figure 6. Percent Duty Cycle versus
Deadtime Control Voltage
OUTPUT) |
50 |
|
|
|
|
|
|
1 |
|
|
|
||
(EACH |
40 |
VCC = 15 V |
|
|||
|
|
|||||
|
2 |
VOC = Vref |
|
|||
|
|
1. |
CT = 0.01 μF |
|
||
CYCLE |
|
|
|
|||
30 |
|
1. |
RT = 10 kΩ |
|
||
|
|
2. |
CT = 0.001 μF |
|
||
DUTY |
20 |
|
1. |
RT = 30 kΩ |
|
|
|
|
|
|
|||
|
|
|
|
|
||
DC, PERCENT |
10 |
|
|
|
|
|
0 |
|
|
|
|
||
% |
|
|
|
|
||
0 |
1.0 |
2.0 |
3.0 |
3.5 |
||
|
||||||
VDT, DEADTIME CONTROL VOLTAGE (IV)
Figure 7. Emitter±Follower Configuration
Output Saturation Voltage versus
Emitter Current
|
1.9 |
|
|
|
|
(V) |
1.8 |
|
|
|
|
VOLTAGE |
|
|
|
|
|
1.7 |
|
|
|
|
|
1.6 |
|
|
|
|
|
, SATURATION |
|
|
|
|
|
1.5 |
|
|
|
|
|
1.4 |
|
|
|
|
|
1.3 |
|
|
|
|
|
CE(sat) |
|
|
|
|
|
1.2 |
|
|
|
|
|
V |
|
|
|
|
|
|
1.1 |
|
|
|
|
|
0 |
100 |
200 |
300 |
400 |
IE, EMITTER CURRENT (mA)
Figure 9. Standby Supply Current
versus Supply Voltage
|
10 |
|
|
|
|
|
|
|
|
(mA) |
9.8 |
|
|
|
|
|
|
|
|
8.0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CURRENT |
7.0 |
|
|
|
|
|
|
|
|
6.0 |
|
|
|
|
|
|
|
|
|
5.0 |
|
|
|
|
|
|
|
|
|
, SUPPLY |
|
|
|
|
|
|
|
|
|
4.0 |
|
|
|
|
|
|
|
|
|
3.0 |
|
|
|
|
|
|
|
|
|
CC |
2.0 |
|
|
|
|
|
|
|
|
I |
|
|
|
|
|
|
|
|
|
|
1.0 |
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
0 |
5.0 |
10 |
15 |
20 |
25 |
30 |
35 |
40 |
VCC, SUPPLY VOLTAGE (V)
Figure 8. Common±Emitter Configuration
Output Saturation Voltage versus
Collector Current
|
2.0 |
|
|
|
|
(V) |
1.8 |
|
|
|
|
VOLTAGE |
1.6 |
|
|
|
|
1.4 |
|
|
|
|
|
, SATURATION |
1.2 |
|
|
|
|
1.0 |
|
|
|
|
|
0.8 |
|
|
|
|
|
CE(sat) |
|
|
|
|
|
0.6 |
|
|
|
|
|
|
|
|
|
|
|
V |
0.4 |
|
|
|
|
|
|
|
|
|
|
|
0 |
100 |
200 |
300 |
400 |
IC, COLLECTOR CURRENT (mA)
Figure 10. Undervoltage Lockout Thresholds
(V) |
|
|
versus Reference Load Current |
|
|
|||||
|
|
|
|
|
|
|
|
|
||
THRESHOLD |
6.0 |
|
|
|
|
|
|
|
|
|
5.5 |
|
|
|
Turn On |
|
|
|
|
||
|
|
|
|
|
|
|
|
|||
LOCKOUT |
5.0 |
|
|
|
Turn Off |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
, UNDERVOLTAGE |
4.5 |
|
|
|
|
|
|
|
|
|
4.0 |
|
|
|
|
|
|
|
|
||
TH |
|
|
|
|
|
|
|
|
||
0 |
5.0 |
10 |
15 |
20 |
25 |
30 |
35 |
40 |
||
V |
||||||||||
|
|
|
IL, REFERENCE LOAD CURERNT (mA) |
|
|
|||||
6 |
MOTOROLA ANALOG IC DEVICE DATA |
TL594
Figure 11. Error±Amplifier Characteristics |
Figure 12. Deadtime and Feedback Control Circuit |
|
|
Error Amplifier |
|
VCC = 15V |
150 |
150 |
|
|
+ |
Under Test |
|
|
VCC |
2W |
2W |
Vin |
|
|
|
|
|
|
|
± |
|
Test |
Deadtime |
C1 |
Output 1 |
||
|
|
||||||
|
|
|
|
|
E1 |
|
|
|
|
Feedback |
Inputs |
Feedback |
|
||
|
|
|
|
||||
|
|
|
|
|
|||
|
|
Terminal |
|
RT |
|
C2 |
Output 2 |
|
|
(Pin 3) |
|
CT |
|
E2 |
|
|
|
|
|
|
|
|
|
|
+ |
|
|
(+) |
|
|
|
Vref |
± |
|
|
(±) |
Error |
|
|
|
|
(+) |
|
|
|||
Other Error |
|
|
|
|
|||
|
|
|
(±) |
|
|
|
|
|
|
Amplifier |
|
|
Ref |
|
|
|
|
|
Output |
|
|
||
|
|
|
|
|
|
||
|
|
|
|
|
Out |
|
|
|
|
|
50k |
Control |
|
|
|
|
|
|
Gnd |
|
|
||
|
|
|
|
|
|
||
Figure 13. Common±Emitter Configuration |
Figure 14. Emitter±Follower Configuration |
||||
Test Circuit and Waveform |
Test Circuit and Waveform |
||||
|
|
15V |
|
|
|
|
|
RL |
|
15V |
|
|
|
|
C |
|
|
|
|
68 |
|
|
|
|
|
VC |
Each |
|
|
|
|
C |
Output |
Q |
|
Each |
|
CL |
Transistor |
|
VEE |
Output |
Q |
|
E |
||
Transistor |
|
15pF |
|
|
|
|
|
|
RL |
CL |
|
|
|
E |
|
||
|
|
|
68 |
15pF |
|
90% |
|
90% |
90% |
|
90% |
|
|
|
VEE |
||
VCC |
|
|
|
|
|
|
|
10% |
|
10% |
|
10% |
|
10% |
|
||
|
Gnd |
|
|
||
|
tr |
tf |
tr |
|
tf |
|
|
|
|
||
MOTOROLA ANALOG IC DEVICE DATA |
7 |
|
|
|
|
|
TL594 |
|
|
|
|
Figure 15. Error±Amplifier Sensing Techniques |
|
|
||||
VO |
To Output |
|
|
|
|
|
Vref |
|
|
|
|
|
|
||
|
Voltage of |
|
|
|
|
|
1 |
|
System |
|
|
|
|
+ |
|
R1 |
|
|
|
|
|
R2 |
|
|
|
|
3 |
Error |
|
||
|
|
|
|
|
|
||
|
|
|
|
Amp |
|
|
|
1 |
|
|
|
|
± |
|
|
+ |
|
|
|
|
2 |
||
|
|
|
|
|
|
||
|
Error |
|
|
|
|
|
|
|
|
3 |
|
|
|
|
|
|
Amp |
|
|
Negative Output Voltage |
R1 |
||
Vref |
|
|
|
||||
± |
|
|
|
|
|
|
|
2 |
|
|
|
|
VO = Vref |
R1 |
|
R2 |
Positive Output Voltage |
|
R2 |
VO |
|||
|
|
||||||
|
|
|
|
|
|
|
|
|
VO = Vref |
1 + |
R1 |
|
|
|
To Output |
|
R2 |
|
|
|
Voltage of |
||
|
|
|
|
|
|
System |
|
|
|
|
|
|
|
|
|
Figure 16. Deadtime Control Circuit |
|
Figure 17. Soft±Start Circuit |
|||||
Output |
|
|
|
|
|
|
|
Control |
|
|
|
|
|
|
|
Output |
Vref |
4 |
R1 |
|
|
Vref |
CS |
|
|
Output |
|
4 |
|||
Q |
DT |
|
|
Q |
|
||
|
|
|
|
||||
RT |
CT |
|
|
|
|
DT |
|
|
R2 |
|
|
|
RS |
||
6 |
5 |
|
|
|
|
||
|
|
|
|
|
|||
30k |
0.001 |
|
|
|
|
|
|
80
Max. % on Time, each output ≈ 45 ±
1 + R1R2
Figure 18. Output Connections for Single±Ended and Push±Pull Configurations
|
|
C1 |
|
C1 |
|
|
Q1 |
QC |
2.4 V ≤ VOC ≤ Vref |
1 |
1.0 mA to 250 mA |
|
1 |
Q1 |
|||
|
|
E |
|
E |
|
Output |
|
1.0 mA to |
Output |
|
|
Control |
|
Control |
|
|
|
|
500 mA |
|
|
||
|
Single±Ended |
Push±Pull |
|
|
|
|
C2 |
C2 |
|
||
|
|
|
|
||
0 ≤ VOC ≤ 0.4 V |
Q2 |
E2 |
Q2 |
E2 |
1.0 mA to 250 mA |
|
|||||
|
|
QE |
|
|
|
8 |
MOTOROLA ANALOG IC DEVICE DATA |
|
TL594 |
Figure 19. Slaving Two or More Control Circuits |
Figure 20. Operation with Vin > 40 V Using |
Vref |
External Zener |
|
|
R |
|
VCC |
|
S |
|
|
6 |
Vin > 40V |
1N975A |
12 |
|
RT |
|
|
5 |
Master |
VZ = 39V |
5.0V |
RT |
CT |
|
Ref |
CT |
|
270 |
|
|
|
Gnd |
|
|
|
|
Vref |
7 |
6 |
|
RT |
Slave |
5 |
(Additional |
CT |
Circuits) |
Figure 21. Pulse Width Modulated Push±Pull Converter
+Vin = 8.0V to 20V |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
12 |
|
|
47 |
|
|
|
|
+VO = 28V |
|
|
|
1 |
|
|
|
|
|
|
|
|
VCC |
|
|
|
1N4934 |
|
|
IO = 0.2A |
||
|
|
+ |
|
|
|
|
|
|
|
|
|
|
|
T1 |
|
|
|
|
||
|
|
2 |
± |
|
|
|
|
|
|
|
|
|
8 |
Tip |
|
|
|
22 |
|
|
|
1.0M |
|
|
|
|
|
|
|
|
|
|
C1 |
32 |
|
L1 |
|
k |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
+ |
|
|
|
|||
|
33k |
3 |
Comp |
|
|
|
|
TL594 |
|
|
|
|
|
|
|
50 |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
+ |
|
|
|
|
|||||
0.01 |
0.01 |
15 |
|
|
|
|
|
|
|
|
|
|
11 |
|
|
|
35V |
|
|
|
± |
|
|
|
|
|
|
|
|
|
Tip |
50 |
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
C2 |
32 |
25V |
|
|
4.7k |
+ |
50 |
|
|
16 |
+ |
OC |
V |
REF |
DT |
C |
R |
|
Gnd |
E1 |
E2 |
47 |
|
|
|
1.0 |
|
35V |
|
|
|
|
|
|
|
T |
T |
|
|
|
|
1N4934 |
|
|
|
||||
|
|
|
13 |
14 |
|
4 |
5 |
6 |
|
7 |
9 |
10 |
|
|
|
|
|
|
||
|
|
|
+ |
|
|
|
|
|
|
|
|
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
240 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.7k |
|
|
10 |
|
|
15k |
|
|
|
|
|
|
|
|
|
||
|
|
|
4.7k |
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
10k |
0.001 |
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
All capacitors in μF
Test |
|
Conditions |
Results |
|
|
|
|
|
|
L1 ± 3.5 mH @ 0.3 A |
|
Line Regulation |
Vin = 10 V to 40 V |
14 mV 0.28% |
|||
T1 ± Primary: 20T C.T. #28 AWG |
|||||
Load Regulation |
Vin = 28 |
V, IO = 1.0 mA to 1.0 A |
3.0 mV 0.06% |
Secondary: 12OT C.T. #36 AWG |
|
|
|
|
|
Core: Ferroxcube 1408P±L00±3CB |
|
Output Ripple |
Vin = 28 |
V, IO = 1.0 A |
65 mVpp P.A.R.D. |
||
|
|||||
Short Circuit Current |
Vin = 28 |
V, RL = 0.1 Ω |
1.6 A |
|
|
Efficiency |
Vin = 28 |
V, IO = 1.0 A |
71% |
|
|
MOTOROLA ANALOG IC DEVICE DATA |
9 |
|
|
|
|
|
|
|
|
|
TL594 |
|
|
|
|
|
|
|
|
Figure 22. Pulse Width Modulated Step±Down Converter |
|
|
||||||||
+Vin = 10V to 40V |
|
|
|
|
|
|
|
|
|
1.0mH @ 2.0A |
|
||
|
|
|
Tip 32A |
|
|
|
|
|
|
+VO = 5.0V |
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
IO = 1.0A |
|
|
|
|
47 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
150 |
|
|
47k |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12 |
|
|
8 |
11 |
|
0.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
VCC |
|
|
|
C1 |
C2 |
Comp |
3 |
1.0M |
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
± |
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
+ |
|
|
|
|
|
|
+ |
1 |
5.1k |
5.1k |
|
|
50 |
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
TL594 |
|
|
|
|
14 |
|
|
|
|
||
50V |
|
|
|
|
|
Vref |
|
|
|
+ |
|||
|
|
|
|
|
|
|
|
15 |
|
|
500 |
||
|
|
|
|
|
|
|
|
± |
|
MR850 |
|
||
|
|
|
|
|
|
|
|
5.1k |
10V |
|
|||
|
|
|
|
|
|
|
|
+ |
16 |
|
|
|
|
|
CT |
RT |
D.T. |
O.C. Gnd |
E1 |
E2 |
|
|
|
|
|||
|
|
|
|
|
|
+ |
|||||||
|
5 |
6 |
4 |
13 |
7 |
9 |
10 |
|
|
|
|
|
|
|
|
|
|
|
|
50 |
|||||||
|
|
|
|
|
|
|
|
|
|
150 |
|
|
10V |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.001 |
47k |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.1 |
|
|
Test |
Conditions |
Results |
|
|
|
|
|
Line Regulation |
Vin = 8.0 V to 40 V |
3.0 mV |
0.01% |
Load Regulation |
Vin = 12.6 V, IO = 0.2 mA to 200 mA |
5.0 mV |
0.02% |
Output Ripple |
Vin = 12.6 V, IO = 200 mA |
40 mVpp |
P.A.R.D. |
Short Circuit Current |
Vin = 12.6 V, RL = 0.1 Ω |
250 mA |
|
Efficiency |
Vin = 12.6 V, IO = 200 mA |
72% |
|
10 |
MOTOROLA ANALOG IC DEVICE DATA |