EVAL6730 STMicroelectronics, EVAL6730 Datasheet - Page 29

• 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

L6730 - L6730B
5.13
The phase shift between master and slaves is approximately done 180°.
Figure 24. Synchronization
5.12
When the junction temperature reaches 150°C ±10°C, the device enters in thermal
shutdown.
Both MOSFETs are turned OFF and the soft-start capacitor is rapidly discharged with an
internal switch. The device does not restart until the junction temperature goes down to
120°C and, in any case, until the voltage at the soft-start pin reaches 500 mV.
Minimum ON-time T
The device can manage minimum ON times lower than 100 ns. This feature comes from the
control topology as well as from the particular L6730/B overcurrent protection system. In a
voltage mode controller, the current does not have to be sensed to perform regulation and,
in the case of L6730/B, it does not have to be sensed for the overcurrent protection either
because valley current protection can operate during the OFF time. The first advantage
related of this feature is the achievement of extremely low conversion ratios.
shows a conversion from 14 V to 0.5 V at 820 kHz with a t
limited by the MOSFET turn-on and turn-off times.
Thermal shutdown
PWM SIGNALS
ON(MIN)
Doc ID 11938 Rev 3
INDUCTOR CURRENTS
ON
of about 50 ns. The ON time is
Device description
Figure 25
29/52