EVALPM6680 STMicroelectronics, EVALPM6680 Datasheet - Page 10

• Manufacturer Part Number: EVALPM6680
• Description: BOARD EVALUATION FOR PM6680
• Manufacturer: STMicroelectronics

Specifications of EVALPM6680

• Mfg Application Notes: PM6680 Eval Kit, AN2566 App Note
• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 3, Non-Isolated
• Power - Output: 13.25W
• Voltage - Output: 1.05V, 1.5V, 5V
• Current - Output: 5A, 5A, 100mA
• Voltage - Input: 6 ~ 28V
• Regulator Topology: Buck
• Frequency - Switching: 200kHz, 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: PM6680
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6241

Pin settings
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Table 4.
N°
16
17
18
19
20
21
22
23
24
25
26
27
28
CSENSE1
PGOOD1
PGOOD2
PHASE1
HGATE1
SGND2
BOOT1
V5SW
LDO5
SKIP
EN1
FB1
VIN
Pin
Pin functions (continued)
Signal ground for analog circuitry. It must be connected to the signal ground
plan of the power supply.
Internal 5 V regulator bypass connection.
• If V5SW is connected to OUT5 (or to an external 5 V supply) and V5SW is
greater than 4.9 V, the LDO5 regulator shuts down and the LDO5 pin is
directly connected to OUT5 through a 3 Ω (max) switch.
If V5SW is connected to GND, the LDO5 linear regulator is always on.
5 V internal regulator output. It can provide up to 100mA peak current.
LDO5 pin supplies embedded low side gate drivers and an external load.
Device supply voltage input and battery voltage sense. A bypass filter (4 Ω
and 4.7 µF) between the battery and this pin is recommended.
Positive current sense input for the switching section 1. This pin must be
connected through a resistor to the drain of the synchronous rectifier
(R
supply controller.
Switch node connection and return path for the high side driver for the
section 1.It is also used as negative current sense input.
High-side gate driver output for section 1. This is the floating gate driver
output.
Bootstrap capacitor connection for the switching section 1. It supplies the
high-side gate driver.
Pulse skipping mode control input.
• If the pin is connected to LDO5 the PWM mode is enabled.
• If the pin is connected to GND, the pulse skip mode is enabled.
• If the pin is connected to VREF the pulse skip mode is enabled but the
switching frequency is kept higher than 33 kHz (No-audible pulse skip
mode).
Enable input for the switching section 1.
• The section 1 is enabled applying a voltage greater than 2.4 V to this pin.
• The section 1 is disabled applying a voltage lower than 0.8 V.
When the section is disabled the High Side gate driver goes low and Low
Side gate driver goes high.
Power Good output signal for the section 1. This pin is an open drain output
and when the output of the switching section 1 is out of +/- 10 % of its
nominal value.It is pulled down.
Power Good output signal for the section 2. This pin is an open drain output
and when the output of the switching section 2 is out of +/- 10 % of its
nominal value.It is pulled down.
Feedback input for the switching section 1. This pin is connected to a
resistive voltage-divider from OUT1 to PGND to adjust the output voltage
from 0.9 V to 5.5 V.
DSON
sensing) to obtain a positive current limit threshold for the power
Function
PM6680