STEVAL-ISA052V1 STMicroelectronics, STEVAL-ISA052V1 Datasheet - Page 33

• Manufacturer Part Number: STEVAL-ISA052V1
• Description: KIT EVAL PM6675S HE CTLR 2A REG
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISA052V1

• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.5V, 0.6 ~ 3.3V
• Current - Output: 10A, 2A
• Voltage - Input: 4.5 ~ 28 V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: PM6675
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8426

PM6675S
7.1.7
7.1.8
Figure 42. Soft-start at heavy load (a) and short-circuit (b) conditions, Pulse-Skip enabled
Switching section power good signal
The SPG pin is an open drain output used to monitor output voltage through VSNS (in fixed
output voltage mode) or VSEL (in adjustable output voltage mode) pins and is enabled after
the soft-start timer has expired. The SPG signal is held low if the output voltage drops 10%
below or rises 10 % above the nominal regulated value. The SPG output can sink current up
to 4 mA.
Switching section output discharge
Active soft-end of the output occurs when the SWEN (SWitching ENable) is forced low.
When the switching section is turned off, an internal 25 Ω resistor discharges the output
through the VSNS pin.
Figure 43. Switching section soft-end
(a)
VOUT
SWEN
Resistive Discharge
(b)
Device description
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