MICREL MIC4605 Evaluation Board User Guide

: June 8, 2024
: MICREL

Table of Contents

MICREL MIC4605 Evaluation Board
General Description
Getting Started
Evaluation Board Performance
PCB Layout Recommendations (MIC4605YMT)
warranty
References
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MICREL MIC4605 Evaluation Board

General Description

The MIC4605 is an 85V half-bridge MOSFET driver that features adaptive-dead- time and shoot-through protection. The adaptive-dead-time circuitry actively monitors the half-bridge outputs to minimize the time between high-side and low-side MOSFET transitions, thus maximizing power efficiency. Anti-shoot- through circuitry prevents erroneous inputs and noise from turning both MOSFETs on at the same time. Additionally, the MIC4605’s adjustable gate drive sets the gate drive voltage to VDD for optimal MOSFET RDS(ON), which minimizes power loss due to the MOSFET’s RDS(ON).
Requirements
At a minimum, the evaluation board requires a 5.5V to 16V power supply to power the VDD terminal (J1) of the MIC4605 and another supply (up to 85V) may be used to power the MOSFETs connected to the VIN terminal (J2). A pulse generator or the output of a PWM control IC may be connected to the HI and LI terminals (−1), or PWM single input (−2).
Precautions
There is no reverse input protection on this board. When connecting the input sources, make sure that the correct polarity is observed. Under extreme load conditions and with a high supply voltage (>48V) connected to the VIN terminal (J2), input transients can be quite large if long test leads are used. In such cases a 100µF, 100V electrolytic capacitor is needed across the VIN terminals to prevent overvoltage damage to the IC. This can be removed if a clean supply voltage on VIN is always guaranteed. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com.

Getting Started

Connect VIN supply between the VIN and GND terminals and VDD supply between the VDD and GND terminals.
Connect a supply between the VIN terminal (J2) and the GND terminal (J3), paying careful attention to polarity and supply range (VIN ≤ 85V). Do not apply power until Step 5. Connect a supply between the VDD terminal (J1) and the GND terminal (J3), paying careful attention to polarity and supply range (5.5V ≤ VDD < 16V). Do not apply power until Step 5.
Connect the TTL-compatible HI and LI inputs (−1), or the PWM single input (−2).
Connect the HI input (JP2) and LI input (JP3) to a pulse generator or the output of a PWM controller IC. Ensure that they are non-overlapping signals and are TTL-compatible logic-levels. The PWM single input replaces the HI input (JP2) for the −2 option.
Monitor inputs and outputs.
Monitor the inputs HI (JP2) and LI (JP3) or PWM (JP2) and outputs HO (JP1) and LO (JP4) with an oscilloscope.
Connect the motor across HS and GND or connect HS to GND.
The simplest way to observe the MIC4605 operation is to connect a motor across the HS terminal (J8) and GND (J9). Alternatively, the HS terminal (J8) can be shorted to GND (J9) with the VIN supply turned OFF. DC and AC parameters can be easily measured in this configuration.
Turn-on supplies and HI/LI inputs.
Turn-on the VDD power supply, followed by the VIN power supply. Turn on the HI and LI inputs (−1) or PWM single input (−2).

Ordering Information

Part Number	Description
MIC4605-1YMT EV	Evaluation Board Featuring the MIC4605-1YMT Half-Bridge

MOSFET Driver with Dual-TTL Inputs
MIC4605-2YMT EV| Evaluation Board Featuring the MIC4605-2YMT Half-Bridge MOSFET Driver with Dual-TTL Inputs
MIC4605-1YM EV| Evaluation Board Featuring the MIC4605-1YM Half-Bridge MOSFET Driver with Single-PWM Input
MIC4605-2YM EV| Evaluation Board Featuring the MIC4605-2YM Half-Bridge MOSFET Driver with Single-PWM Input

Evaluation Board Performance

MICREL-MIC4605-Evaluation-Board-fig1

Evaluation Board Schematic (MIC4605YM)

Bill of Materials

Item	Part Number	Manufacturer	Description	Qty.

C1

| C1608X7R1E105K| TDK(1)| ****

1.0µF Ceramic Capacitor, 25V, X7R, Size 0603

| ****

1

GRM188R71E105KA12D| Murata(2)

C2

| C1608X7R1E104K| TDK| ****

0.1µF Ceramic Capacitor, 25V, X7R, Size 0603

| ****

1

06033C104KAT2A| AVX(3)
GRM188R71E104KA01D| Murata
C3| B41851-A9107-M008| TDK| 100µF, 100V, Radial Electrolytic Capacitor| 1

C4

| CGA5L2X7R2A105K| TDK| ****

1.0µF Ceramic Capacitor, 100V, X7R, Size 1206

| ****

1

12061C105K4Z4A| AVX
GRF31CR72A105KA01L| Murata

Q1, Q3

| AM7414NA| Analog Power(4)| ****

100V , N-Channel MOSFET , SO8

| ****

2

Notes:

TDK: www.tdk.com.
Murata: www.murata.com.
AVX: www.avx.com.
Analog Power: www.analogpowerinc.com.
Micrel, Inc.: www.micrel.com.
PCB Layout Recommendations (MIC4605YM)
Evaluation Board Schematic (MIC4605YMT)
Bill of Materials** Item| Part Number| Manufacturer| Description| Qty.**
---|---|---|---|---

C1

| C1608X7R1E105K| TDK(6)| ****

1.0µF Ceramic Capacitor, 25V, X7R, Size 0603

| ****

1

GRM188R71E105KA12D| Murata(7)

C2

| C1608X7R1E104K| TDK| ****

0.1µF Ceramic Capacitor, 25V, X7R, Size 0603

| ****

1

06033C104KAT2A| AVX(8)
GRM188R71E104KA01D| Murata
C3| B41851-A9107-M008| TDK| 100µF, 100V, Radial Electrolytic Capacitor| 1

C4

| CGA5L2X7R2A105K| TDK| ****

1.0µF Ceramic Capacitor, 100V, X7R, Size 1206

| ****

1

12061C105K4Z4A| AVX
GRF31CR72A105KA01L| Murata

Q1, Q3

| AM7414NA| Analog Power ( 9 )| ****

100V , N-Channel MOSFET , SO8

| ****

2

Notes:

TDK: www.tdk.com.
Murata: www.murata.com.
AVX: www.avx.com.
Analog Power: www.analogpowerinc.com.
Micrel, Inc.: www.micrel.com.

PCB Layout Recommendations (MIC4605YMT)

MICREL-MIC4605-Evaluation-Board-
fig5

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 408-944-0800 FAX +1 408-474-1000 WEB http://www.micrel.com

warranty

Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2013 Micrel, Incorporated.

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