L6566ATR STMicroelectronics, L6566ATR Datasheet - Page 37

• Manufacturer Part Number: L6566ATR
• Description: IC CTRLR OVP UVLO 16SOIC
• Manufacturer: STMicroelectronics

Specifications of L6566ATR

• Output Isolation: Isolated
• Frequency Range: 93 ~ 107kHz
• Voltage - Input: 8 ~ 23 V
• Power (watts): 750mW
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• For Use With: 497-8834 - BOARD DEMO FOR L6563/LL6566A497-6452 - BOARD EVAL FOR L6566B497-6451 - BOARD EVAL FOR L6566B497-6450 - BOARD EVAL FOR L6566B497-6449 - BOARD EVAL FOR L6566A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6296-2

L6566A
Note:
Figure 22 on page 35
Figure 23 on page 36
To use the OVP function effectively, i.e. to ensure that the OVP comparator will be always
interrogated during MOSFET’s OFF-time, the duty cycle D under open-loop conditions must
fulfill the following inequality:
Equation 12
where T
Figure 24. Maximum allowed duty cycle vs switching frequency for correct OVP
BLANK2
detection
= 2 µs; this is also illustrated in the diagram of
Dmax
shows the internal block diagram, while the timing diagrams in
illustrate the operation.
0.8
0.7
0.6
0.5
0.4
0.3
0.2
5 . 10
4
1 . 10
5
D
1.5 . 10
+
5
T
BLANK
2 . 10
5
fsw [Hz]
2
f
sw
2.5 . 10
≤
1
5
3 . 10
5
Figure 24
3.5 . 10
Application information
5
0.725
4 . 10
.
5
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