Diodes Incorporated AP61201Z6-EVM

Overview

AP61201Z6-EVM from Diodes Incorporated is an evaluation board for the AP61201 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. The board enables rapid validation of point-of-load power delivery in FPGA, router, and consumer electronics designs.

For engineers reviewing the AP61201Z6-EVM datasheet, AP61201Z6-EVM pinout, AP61201Z6-EVM application, or AP61201Z6-EVM equivalent, this board provides direct access to VIN, VOUT, EN, SW, and FB test points; supports 1.8V default output at 2A load; includes Würth 74438357010 inductor and Taiyo Yuden EMK212ABJ106KD-T capacitors; and delivers measured efficiency >90% at 5V input/1.8V@1A output.

Technical Context

The AP61201Z6-EVM implements constant-on-time (COT) control to achieve fast transient response and inherent loop stability without external compensation. Its layout exposes critical nodes-SW, FB, EN-for oscilloscope probing and enables force-PWM mode via EN pin logic level selection.

Designed around the AP61201 IC, the board operates across –40°C to +85°C ambient, supports UVLO (2.1V typ), VIN OVP (7.0V transient), thermal shutdown, and valley/peak current limiting-ensuring robust evaluation under real-world load and line transients.

Key Specifications

Availability

AP61201Z6-EVM is available at Aetrix Electronics and suitable for FPGA power sequencing, network camera PoL regulation, wireless router DC-DC conversion, and consumer electronics design validation requiring stable component supply and rapid prototyping support.

Supply support for AP61201Z6-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 AP61201 product line targets space-constrained, high-efficiency point-of-load applications where low IQ, fast transient response, and minimal external components are critical-especially in battery-powered and thermally sensitive systems.

FAQ

What output voltages can be configured on the AP61201Z6-EVM?

The board ships with R1=200kΩ and R2=100kΩ for 1.8V output, but supports 0.6V–5.5V via resistor divider per VOUT = 0.6V × (1 + R1/R2). Table 1 in the datasheet lists standard values (1.0V–3.3V) with recommended 1% tolerance resistors and 10µF X5R/X7R ceramic output capacitors.

How is enable/disable functionality implemented on this evaluation board?

EN is controlled via a jumper: "H" position connects EN to VIN for forced PWM operation; "L" position pulls EN to GND to disable the converter. No pull-up/pull-down resistors are required-the AP61201's internal EN threshold is 0.4V (typ), ensuring clean startup/shutdown sequencing.

What inductor and capacitors are used on the AP61201Z6-EVM?

The board uses Würth Elektronik 74438357010 (1.0µH, 3.5A saturation, shielded SMD) for L, and Taiyo Yuden EMK212ABJ106KD-T (10µF, 10V, X5R/X7R, 0805) for both C2 (input) and C3 (output). All passives are rated for ≥105°C operation and meet AEC-Q200 stress requirements.

Can the AP61201Z6-EVM operate from a 3.3V input to generate 1.2V output?

Yes-within the AP61201's 2.3V–5.5V input and 0.6V–5.5V output ranges. To set 1.2V, replace R2 with 200kΩ (R1 remains 200kΩ) per datasheet Table 1. Efficiency exceeds 88% at 3.3V→1.2V/1A, verified by Figure 6 performance curves and measured ripple <15mVpp at full load.