EVAL6730 STMicroelectronics, EVAL6730 Datasheet - Page 24

• Manufacturer Part Number: EVAL6730
• Description: EVAL BOARD FOR L6730XX
• Manufacturer: STMicroelectronics
• Type: Motor / Motion Controllers & Driversr

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

Device description
24/52
Figure 17. OVP with sink enabled: the low-side MOSFET is turned-on in advance
Figure 18. OVP with sink disabled: delay on the OVP operation
The L6730B can always sink current and so the OVP will operate always in advance. The
device realizes the over-current-protection (OCP) sensing the current both on the high-side
MOSFET(s) and the low-side MOSFET(s) and so 2 current limit thresholds can be set (see
OCH pin and OCL pin in
●
●
The peak current protection is active when the high-side MOSFET(s) is turned on, after an
adjustable masking time (see
enabled when the low-side MOSFET(s) is turned on after a fix masking time of about 400
ns. If, when the soft-start phase is completed, an over current event occurs during the on
time (peak-current-protection) or during the off time (valley-current-protection) the device
Peak current limit
Valley current limit
Table 4: Pin
Chapter 5.10 on page
Doc ID 11938 Rev 3
connection):
126%
27). The valley-current-protection is
109%
L6730 - L6730B
V
LGate
V
LGate
V
V
FB
OUT
OUT
FB