EVAL6730 STMicroelectronics, EVAL6730 Datasheet - Page 23
![EVAL BOARD FOR L6730XX](/photos/9/30/93060/eval6730_sml.jpg)
EVAL6730
Manufacturer Part Number
EVAL6730
Description
EVAL BOARD FOR L6730XX
Manufacturer
STMicroelectronics
Type
Motor / Motion Controllers & Driversr
Datasheets
1.L6730TR.pdf
(52 pages)
2.L6730DTR.pdf
(50 pages)
3.EVAL6730.pdf
(9 pages)
4.EVAL6732.pdf
(43 pages)
Specifications of EVAL6730
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Power - Output
66W
Voltage - Output
3.3V
Current - Output
20A
Voltage - Input
4.5 ~ 14V
Regulator Topology
Buck
Frequency - Switching
400kHz
Board Type
Fully Populated
Utilized Ic / Part
L6730
Input Voltage
8 V to 52 V
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
L6208
Other names
497-5501
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
L6730C - L6730D
Figure 16. Constant current and Hiccup Mode during an OCP (L6730C).
Figure 17. Peak overcurrent-protection in constant-current-protection (L6730D).
V
I
L
OUT
Using the L6730D there is the possibility to set the constant-current-protection also after the
soft-start. The following figures show the behaviour of the L6730D during an overcurrent event.
Figure 17.
when the current exceeds the OCP threshold. In this way the duty-cycle is reduced, the V
reduced and so the maximum current can be fixed even if the output current is escalating.
Figure 18.
time and, if the output current continues to increase, the maximum current can increase too.
Notice how the Vout remains constant even if the output current increases because the on-time
cannot be reduced anymore.
I
OUT
shows the intervention of the peak OCP: the high-side MOSFET(s) is turned-off
shows the limit of this protection: the on-time can be reduced only to the masking
Peak th
T
ON
VSS
Device description
VCOMP
I
L
OUT
23/50
is