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MC34129EF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
MC34129 MC33129
13
MOTOROLA ANALOG IC DEVICE DATA
Figure 28. Non–Isolated 725 mW Flyback Regulator
T1: Coilcraft #G6807–A
Primary = 90T #28 AWG
Secondary
±
5V = 26T #30 AW
Gap = 0.05 n, for Lp of 600
µ
H
Core = Ferroxcube 813E187–3C8
Bobbin = Ferroxcube E187PCB1–8
12
0.1
7
24k
470pF
128kHz
Sync
6
5
4
2.5 V
OSC
R
S
Q
1.25V
220k
13
14
1N958A
8
9
10
500pF
11
1
2
3
2.2k
2N5551
1N4148
+ 10
36k
R2
12k
R1
MTP
2N20L
10
50
T1
1N5819
5V/125mA
100
Gnd
100
–5V/20mA
1N5819
V
in
= 20V to 48V
+
+
+
++
+
–
–
–
––
–
+
+
+
Test Conditions Results
Line Regulation 5.0 V V
in
= 20 V to 40 V, I
out
5.0 V = 125 mA, I
out
–5.0 V = 20 mA ∆ = 1.0 mV
Load Regulation 5.0 V V
in
= 30 V, I
out
5.0 V = 0 mA to 150 mA, I
out
–5.0 V = 20 mA ∆ = 2.0 mV
Output Ripple 5.0 V V
in
= 30 V, I
out
5.0 V = 125 mA, I
out
–5.0 V = 20 mA 150 mVpp
Efficiency V
in
= 30 V, I
out
5.0 V = 125 mA, I
out
–5.0 V = 20 mA 77%
V
out
= 1.25
R2
R1
+ 1
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
MC34129 MC33129
14
MOTOROLA ANALOG IC DEVICE DATA
Figure 29. Isolated 2.0 W Flyback Regulator
T1: Primary = 35T #32 AWG
Feedback = 12T #32 AWG
Secondary
±
5 V = 7T #32 AWG
Gap = 0.004
″
, for Lp of 180
µ
H
Core = Ferroxcube 813E187–3C8
Bobbin = Ferroxcube E187PCB1–8
12
0.1
7
24k
470pF
6
5
4
2.5V
OSC
R
S
Q
1.25V
220k
13
14
8
9
10
11
1
2
Gnd
–5V/20mA
V
in
= 20V to 48V
0.1
2.7k
1
2
6
5
4
10k
128kHz
Sync
MOC5007
2.2k
2N5551
100
1N5819
180
pF
2
0.1
140k
330
20k
T1
1N5819
5V/380mA
100
100
1N5819
MTP
2N20
100pF
100
+
+
+
++
+
–
–
–
––
–
+
1N5819
+
+
+
3
Test Conditions Results
Line Regulation 5.0 V V
in
= 20 V to 40 V, I
out
5.0 V = 380 mA, I
out
–5.0 V = 20 mA ∆ = 1.0 mV
Load Regulation 5.0 V V
in
= 30 V, I
out
5.0 V = 100 mA to 380 mA, I
out
–5.0 V = 20 mA ∆ = 15 mV
Output Ripple 5.0 V V
in
= 30 V, I
out
5.0 V = 380 mA, I
out
–5.0 V = 20 mA 150 mVpp
Efficiency V
in
= 30 V, I
out
5.0 V = 380 mA, I
out
–5.0 V = 20 mA 73%
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
MC34129 MC33129
15
MOTOROLA ANALOG IC DEVICE DATA
Figure 30. Isolated 3.0 W Flyback Regulator with Secondary Side Sensing
T1:
L1:
Primary = 22T #18 AWG
Secondary = 22T #18 AWG
Lp = 50
µ
H
Core = Ferroxcube
2616PA100–3C8
Bobbin = Ferroxcube 2616F1D
Coilcraft Z7156, 15
µ
H
12
0.1
7
6
5
4
2.5V
OSC
R
S
Q
1.25V
13
14
8
9
10
11
1
2
3
V
in
= 12V
D
G
M
K
S
1N5821
L1
5/60mA
470
1/2
4N26
51
100
0.1
Return
TL431A
MTP10N10M
1/2
4N26
+
+
+
++
–
–
–
–
–
2.2k
15k
510
0.002
+
+
3.9k3.9k
200
0.001
100
Test Conditions Results
Line Regulation V
in
= 8.0 V to 12 V, I
out
600 mA ∆ = 1.0 mV
Load Regulation V
in
= 12 V, I
out
= 100 mA to 600 mA ∆ = 8.0 mV
Output Ripple V
in
= 12 V, I
out
= 600 mA 20 mVpp
Efficiency V
in
= 12 V, I
out
= 600 mA 81%
An economical method of achieving secondary sensing is to combine the TL431A with a 4N26 optocoupler.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MC34129EF

Mfr. #:
Buy MC34129EF
Manufacturer:
NXP Semiconductors
Description:
IC CTLR CURRENT MODE 14-SOIC
Lifecycle:
New from this manufacturer.
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