Home Products DC-DC DC-DC Converters Buck

SQ29045NDG

Production
High Efficiency, 16V/40A Continues, 45A Peak Synchronous Step-down Regulator
Datasheet
SQ29045NDG High Efficiency, 16V/40A Continues, 45A Peak Synchronous Step-down Regulator Datasheet
Part number SQ29045NDG
Channel(#) 1
Vin (min) (V) 6
Vin (max) (V) 16
Switching frequency (min)(kHz) 400
Switching frequency (max)(kHz) 1000
Vout (min) (V) 0.35
Vout (max) (V) 5.5
Iout (max) (A) 45
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%) 1
Vout accuracy(±%)
Control mode
Duty cycle (max)(%)
Operation mode
Iq (typ) (uA)
Features Flexible configurations via PMBus interface
Package LGA5X6-30
Operating temperature range(°C) -40°C to 125°C
Functional safety category

Ÿ Wide Input Voltage Range: 6V to 16V

Ÿ Adjustable Output Voltage with Wide Voltage Range:

Ø 0.6V to 5.5V via External Resistor Divider while operates in External Resistor Divider Mode

Ø 0.35V to 5.5V with Programmable PMBus Interface while operates in Internal Resistor Divider Mode

Ÿ 40A Continuous, 45A Peak Output Current Capacity

Ÿ Accurate Feedback Set Point: ±1%@0.6V,TJ= 40oC to 125oC

Ÿ Low RDS(ON) for Internal Switches (top/bottom): 3.0mΩ/0.9mΩ

Ÿ Differential Remote Sense

Ÿ Proprietary Advanced COT Control For Fast Transient Response

Ÿ Startup with Pre-biased Voltage

Ÿ Input/Output Voltage, Output Current and Internal Die Temperature Reporting

Ÿ Programmable via the PMBus Interface

Ø Output Voltage From 0.35V to 5.5V and Vout Transition Rate

Ø Switching Frequency of 400kHz /600kHz /800kHz /1MHz

Ø Pulse-Skip or Forced-CCM Operation

Ø Soft-start and Turn On/Off Delay Time

Ø Input Under-voltage lockout (UVLO),Output current limit, Input/Output Over-voltage protection and Output Under-voltage protection(UVP) threshold

Ø Cycle-by-cycle Valley, Peak and Reverse Current Limit

Ø Selectable Hic-cup/Latch-off Mode for Output Over-current protection(OCP) and Under-voltage Protection.

Ø Selectable Auto Recovery/Latch-off Mode for Output Over-voltage protection(OVP) and Over Temperature Protection(OTP)

Ø Power Good Indicator for Under-Voltage and Over-Voltage

Ÿ RoHS Compliant and Halogen Free Compact Package: LGA5×6-30

The SQ29045 is a PMBus 1.3 compliant, high efficiency synchronous step-down DC/DC regulator capable of delivering up to 45A current over a wide input voltage range from 6V up 16V.

Evaluation Board

  • 幻灯片4

    Photo of evaluation board

  • 幻灯片6

    Photo of evaluation board

  • 幻灯片5

    Photo of evaluation board

EVB_SQ29045NDG

DB_SQ29045NDG_1 is intended for evaluating 40A continuous, 45A Peak，16V input, 400kHz, 600kHz，800kHz or 1000kHz with PMBus interface synchronous buck regulator.

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12