EVAL6730 STMicroelectronics, EVAL6730 Datasheet - Page 17

• 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
5.5
5.6
Error amplifier
Figure 7.
Soft-start
When both V
pin) the start-up phase takes place. Otherwise the SS pin is internally shorted to GND. At
start-up, a ramp is generated charging the external capacitor C
generator. The initial value for this current is 35 µA and charges the capacitor up to 0.5 V.
After that it becomes 10 µA until the final charge value of approximately 4 V (see
Figure 8.
Vss
Vss
Error amplifier reference
Device start-up: voltage at the SS pin
CC
V
CCDR
and V
EAREF
100K
IN
are above their turn-on thresholds (V
Doc ID 11938 Rev 3
0.5V
0.5V
0.5V
2.5V
1.2V
EXT
0.6V
4V
IN
SS
is monitored by the OCH
with an internal current
4.2V or 8.6V
1.25V
1.25V
4.2V
Error Amplifier Ref.
Vcc
Vin
4V
Device description
Vcc
Vin
Figure
t
t
17/52
5).