Analog Devices Inc./Maxim Integrated MAX17570DEVKIT#

Overview

MAX17570DEVKIT# from Analog Devices is an evaluation kit designed to validate the performance of the MAX17570D high-voltage synchronous step-down DC-DC converter, supporting 4.5V–60V input, delivering up to 300mA at fixed 3.3V output, operating in PFM mode at light loads, and featuring open-drain RESET, adjustable UVLO, overcurrent/thermal protection, and external frequency synchronization capability for the MAX17570A variant (not available on MAX17570D).

For engineers reviewing the MAX17570DEVKIT# datasheet, MAX17570DEVKIT# pinout, MAX17570DEVKIT# application, or MAX17570DEVKIT# equivalent, this page provides verified board-level specifications, EMI-compliant layout details, jumper-configurable EN/UVLO settings, proven component selection (e.g., 22µF/10V X7R output cap), and guidance for hot-plug and long-cable input scenarios.

Technical Context

The MAX17570DEVKIT# hosts two electrically isolated evaluation circuits on a single PCB-one for the MAX17570A (PWM-only) and one for the MAX17570D (PFM at light loads)-each with dedicated input/output pads, jumper-programmable EN/UVLO (JU101/JU201), and independent RT/SYNC resistor networks (R103/R203) setting default 400kHz switching frequency.

It implements CISPR32 Class B-compliant EMI filtering using discrete components, includes optional 10µF/100V electrolytic capacitors (C103/C203) to dampen oscillations from long input cables or hot-plug events, and uses X7R ceramic capacitors (C110/C210 = 22µF/10V/1206) selected for industrial temperature stability.

Key Specifications

Availability

MAX17570DEVKIT# is available at Aetrix Electronics and suitable for industrial power supply validation, high-voltage DC-DC reference design verification, and EMI-compliant buck converter prototyping requiring stable component supply and documented test methodology.

Supply support for MAX17570DEVKIT# includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and consumer markets with precision technology solutions.

The MAX17570DEVKIT# belongs to Analog Devices' evaluation platform portfolio for high-voltage DC-DC converters, engineered to accelerate design-in of robust, EMI-compliant power stages in harsh-input environments.

FAQ

What is the primary function of the MAX17570DEVKIT#?

The MAX17570DEVKIT# is an evaluation kit that demonstrates and validates the operation of the MAX17570D synchronous step-down DC-DC converter. It provides a fully assembled, tested PCB with dual isolated circuits (MAX17570A and MAX17570D), enabling engineers to verify performance under real-world conditions including 4.5V–60V input, 300mA load, PFM-mode efficiency, and EMI compliance. The MAX17570DEVKIT# supports quick-start testing without rework or component substitution.

Does the MAX17570DEVKIT# support external clock synchronization?

The MAX17570DEVKIT# supports external clock synchronization only for the MAX17570A circuit via the SYNC pad and optional C109 capacitor; the MAX17570D circuit does not support this feature. Synchronization requires an external clock between 1.1× and 1.4× the programmed switching frequency (e.g., 440kHz–560kHz for default 400kHz). This capability is explicitly disabled in the MAX17570D design per the official evaluation kit documentation.

How is undervoltage lockout configured on the MAX17570DEVKIT#?

Undervoltage lockout (UVLO) on the MAX17570DEVKIT# is configured using jumpers JU101 (for MAX17570A) and JU201 (for MAX17570D). With no shunt installed, both converters enable at VIN ≥ 4.5V. Installing a shunt across pins 2–3 disables the respective converter. A shunt across pins 1–2 connects EN/UVLO directly to VIN for unconditional enable. These configurations are confirmed in Table 1 of the official EV kit data sheet.

What output capacitor is used on the MAX17570DEVKIT# and why?

The MAX17570DEVKIT# uses a 22µF/10V/1206 X7R ceramic capacitor (C110 for MAX17570A, C210 for MAX17570D) as the main output capacitor. X7R dielectric was selected for its stable capacitance over temperature and voltage, critical for consistent regulation in industrial applications. This value satisfies ripple and transient response requirements per the MAX17570 datasheet's output capacitor guidelines.

Is the MAX17570DEVKIT# compliant with electromagnetic interference standards?

Yes, the MAX17570DEVKIT# complies with CISPR32 Class B conducted and radiated emissions requirements. This is achieved through a combination of onboard EMI filter components (listed as optional in the BOM), optimized PCB layout minimizing switching node loop area, strategic placement of high-frequency decoupling capacitors near the input, and use of low-ESR electrolytic capacitors (C103/C203) to suppress oscillations from long input cables or hot-plug events.