EVAL6730 Datasheet, PDF (5/9 Pages) STMicroelectronics – L6730 demoboard realizes in a four layer PCB a step-down DC/DC converter and shows

EVAL6730
Features
The over-current-protection limit is set at 15 A but it can be changed by replacing the
resistors R1 and R12 (see OCL and OCH pin).
● Vcc-Gndcc:
Using the input voltage to supply the controller no power is required at this input. However
the controller can be supplied separately from the power stage through the Vcc input (4.5-
14V) and, in this case, jumper G1 must be left open.
● V_CCDR:
An internal LDO provides the power into the device. The input of this stage is the Vcc pin
and the output (5 V) is the V_CCDR pin. The LDO can be bypassed, providing directly a 5 V
voltage from V_CCDR and Gndcc. In this case the pins 1 and 3 of the jumper G1 must be
shorted.
● TP1:
This pin can be used as an input or as a test point. If all the jumper G2 pins are shorted, TP1
can be used as a test point of the voltage at the EAREF pin.
If the pins 2 and 3 of G2 are connected together, TP1 can be used as an input to provide an
external reference for the internal error amplifier.
● TP2:
This test point is connected to the Tmask pin.
● TP3:
This test point is connected to the S/O/U pin.
● SYNCH:
This pin is connected to the synch pin of the controller.
● PWRGD:
This pin is connected to the PGOOD pin of the controller.
● DIP SWITCH
Different positions of the dip switch correspond to different settings of the multifunction pin
(S/O/U) (CC/O/U).
Table 4. Dip switch
UVLO
OVP
5V
5V
5V
5V
12 V
12 V
12 V
12 V
Not latched
Not latched
Latched
Latched
Not latched
Not latched
Latched
Latched
SINK
CC
Not
Yes
Not
Yes
Not
Yes
Not
Yes
Vsou/ VB_CCDRB DIP SWITCH
0
S7
0.2
S1-S7
0.3
S2-S7
0.4
S3-S7
0.5
S4-S7
0.6
S5-S7
0.7
S6-S7
1
S1
STATE
A
B
C
D
E
F
G
H
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