STEVAL-ISA052V1 STMicroelectronics, STEVAL-ISA052V1 Datasheet - Page 19

• 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
Device description
The PM6675S combines a single high efficiency step-down controller and an independent
Low Drop-Out (LDO) linear regulator in the same package.
The switching controller section is a high-performance, pseudo-fixed frequency, Constant-
On-Time (COT) based regulator specifically designed for handling fast load transient over a
wide range of input voltages.
The switching section output can be easily set to a fixed 1.5 V voltage without additional
components or adjusted in the 0.6 V to 3.3 V range using an external resistor divider. The
Switching Mode Power Supply (SMPS) can handle different modes of operation in order to
minimize noise or power consumption, depending on the application needs. Selectable low-
consumption and low-noise modes allow the highest efficiency and a 33 kHz minimum
switching frequency respectively at light loads.
A lossless current sensing scheme, based on the Low-Side MOSFET turn-on resistance,
avoids the need for an external sensing resistor.
The input of the LDO can be either the switching section output or a lower voltage rail in
order to reduce the total power dissipation. Linear regulator stability is achieved by filtering
its output with a ceramic capacitor (20 µF or greater). The LDO linear regulator can sink and
source up to 2 Apk.
Two fixed current limit (±1 A-±2 A) can be chosen.
An active soft-end is independently performed on both the switching and the linear
regulators outputs when disabled.
Device description
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