L5991 STMicroelectronics, L5991 Datasheet - Page 7

IC PRIMARY CTRLR W/STANDBY 16DIP

L5991

Manufacturer Part Number
L5991
Description
IC PRIMARY CTRLR W/STANDBY 16DIP
Manufacturer
STMicroelectronics
Datasheet

Specifications of L5991

Mfg Application Notes
25W Off-Line Battery Charger with L5991A AppNote 300W Forward Converter with L5991A AppNote 45W AC-DC Adapter with Standby AppNote 60W Power Supply using the L5991 AppNote 80W Adapter using L6561/L5991A AppNote 90W SMPS for Monitors with Standby AppNote Trick Enhances L5991s Standby Function AppNote L5991-Based Converter, Temp Extra Power AppNote Auxiliary Power Supply Design AppNote Minimize Power Losses AppNote
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
1MHz
Duty Cycle
93%
Voltage - Supply
11 V ~ 20 V
Buck
No
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
0°C ~ 105°C
Package / Case
16-DIP (0.300", 7.62mm)
Frequency-max
1MHz
Duty Cycle (max)
93 %
Output Voltage
5.075 V
Output Current
1500 mA
Mounting Style
Through Hole
Switching Frequency
1000 KHz
Operating Supply Voltage
12 V to 20 V
Maximum Operating Temperature
+ 150 C
Fall Time
35 ns
Minimum Operating Temperature
- 40 C
Rise Time
70 ns
Synchronous Pin
Yes
Topology
Boost, Flyback
Package
DIP16 AND SO16
For Use With
497-8226 - BOARD EVAL L5991/STP12NK80Z497-6416 - BOARD EVAL L5991/STP10NK60Z497-5083 - EVAL BOARD 3PH PWR SUPPLY W/ESBT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-7251-5
L5991

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Figure 15. Switching frequency vs. tempera-
fsw (KHz)
320
310
300
290
280
Figure 17. Dead time vs Ct.
1,500
1,200
Figure 19. Delay to output vs junction temperature.
42
40
38
36
34
32
30
28
Dead time [ns]
900
600
300
-50
-50
Delay to output (ns)
-25
-25
Rt =4.5Kohm
ture.
2
0
0
Timing capacitor Ct [nF]
25
25
4
Tj (°C)
Tj (°C)
50
50
Rt= 4.5Kohm, Ct = 1nF
Vcc = 15V, V15=Vref
6
75
75
PIN10 = OPEN
1V pulse
on PIN13
100
100
8
V15 = Vref
125
125
V15 = 0V
10
150
150
Figure 16. Switching frequency vs. temperature.
fsw (KHz)
320
310
300
290
280
Figure 18. Maximum Duty Cycle vs Vpin3.
Figure 20. E/A frequency response.
G [dB]
150
100
3.5
2.5
1.5
50
DC Control Voltage Vpin3 [V]
0.01
3
2
1
0
-50
0
-25
10
0.1
20
0
1
30
V15 = Vref
25
Duty Cycle [%]
40
10
f (KHz)
Tj (°C)
50
Rt= 4.5Kohm, Ct = 1nF
Vcc = 15V, V15= 0
50
100
Rt = 4.5Kohm,
Ct = 1nF
60
75
L5991 - L5991A
1000
70
100
V15 = 0V
80
10000 100000
125
90 100
Phase
7/23
150
140
120
100
80
60
40
20

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