Diodes Incorporated AP61200Z6-EVM

Overview

AP61200Z6-EVM from Diodes Incorporated is an evaluation board for the AP61200 1A synchronous buck converter, supporting 2.3V–5.5V input and programmable 0.6V–5.5V output. It features a SOT563-packaged IC with 2.2MHz switching, 14µA quiescent current in PFM mode, and integrated high-side (120mΩ) and low-side (80mΩ) MOSFETs. Designed for rapid validation of point-of-load power delivery in space-constrained consumer and embedded systems.

For engineers reviewing the AP61200Z6-EVM datasheet, AP61200Z6-EVM pinout, AP61200Z6-EVM application, or AP61200Z6-EVM equivalent, this board enables fast efficiency, ripple, load transient, and enable-control testing of the AP61200 DC-DC converter under real-world 1.8V/2A and adjustable-output conditions.

Technical Context

The AP61200Z6-EVM implements the AP61200's constant-on-time (COT) control architecture to deliver fast transient response and stable regulation without external compensation. Its layout exposes VIN, VOUT, EN, SW, and FB test points for direct probing of input/output rails, switching node waveform, and feedback loop behavior.

Board-level design includes a Würth 74438357010 1.0µH inductor rated for >3.5A saturation current, dual 10µF TAIYO YUDEN ceramic capacitors (C2/C3), and precision 1% resistor divider (R1=200kΩ, R2=100kΩ) presetting VOUT to 1.8V ±1% - matching AP61200's 0.6V ±2% reference voltage and thermal shutdown protection.

Key Specifications

Availability

AP61200Z6-EVM is available at Aetrix Electronics and suitable for FPGA core supplies, network camera PoL regulation, white goods MCU power domains, and consumer electronics DC-DC validation requiring stable component supply and documented performance benchmarks.

Supply support for AP61200Z6-EVM 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP61200Z6-EVM belongs to Diodes' evaluation platform series for its AP61xxx family of high-efficiency, low-quiescent-current buck converters targeting space- and power-sensitive embedded point-of-load applications.

FAQ

What input voltage range does the AP61200Z6-EVM support?

The AP61200Z6-EVM supports 2.3V to 5.5V DC input, as defined by the AP61200 IC's absolute maximum and recommended operating conditions. It has been validated at 5V input with 1.8V/2A output, and operates reliably down to 2.3V with appropriate output capacitor selection and thermal management.

How is the output voltage set and adjusted on this board?

The board ships with R1=200kΩ and R2=100kΩ, setting VOUT to 1.8V using the formula VOUT = 0.6V × (1 + R1/R2). To adjust output voltage, replace R1 and/or R2 with values from Table 1 in the datasheet - e.g., 200kΩ/44.2kΩ yields 3.3V - while maintaining 1% tolerance and proper power rating.

Can the AP61200Z6-EVM operate in forced PWM mode?

Yes. Driving the EN pin high enables the AP61200 IC; pulling EN low disables it. The board includes a jumper (H/L positions) to select enable state. Force PWM operation is not directly configurable on the EVM - the AP61200 defaults to automatic PFM/PWM mode, with no dedicated mode-select pin.

What inductor and capacitors are used on the AP61200Z6-EVM?

The board uses a Würth Elektronik 74438357010 1.0µH shielded power inductor (rated >3.5A saturation current) and two TAIYO YUDEN EMK212ABJ106KD-T 10µF/10V X5R ceramic capacitors (0805 case) for input (C2) and output (C3) filtering - selected to minimize ripple and ensure stability across load transients.