85V Half Bridge MOSFET Drivers with 5.5V to 16V Gate Drive MIC4604 Evaluation Board General Description The MIC4604 is an 85V Half Bridge MOSFET driver. The MIC4604 features fast 39ns propagation delay times and 20ns driver rise/fall times for a 1nF capacitive load. The low-side and high-side gate drivers are independently controlled. The MIC4604 has TTL input thresholds. It includes a high-voltage internal diode that helps charge the high-side gate drive bootstrap capacitor. The MIC4604YM Evaluation Board comes with the MIC4604YM SOIC package, while the MIC4604YMT Evaluation Board comes with the MIC4604YMT TDFN package. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Requirements At a minimum, the evaluation board requires a 5.5V to 16V power supply to power the VDD terminal (J1) of the MIC4604 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. 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. Because there is no non-overlap protection, always ensure that the HI/LI inputs are connected to non-overlapping clock signals as shown in Figures 1, 2, 3, and 4. If both HI and LI are ON at the same time, then HO and LO will be high at the same time and turn ON both the MOSFETs, thus shorting the VIN supply to GND. Getting Started 1. 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. 2. Connect the TTL-compatible HI and LI inputs. Connect the HI input (JP2) and LI input (JP3) to a pulse generator or the output of a PWM control IC. Ensure that they are non-overlapping signals and are TTL compatible logic-levels. 3. Monitor inputs and outputs. Monitor the inputs HI (JP2) and LI (JP3) and outputs HO (JP1) and LO (JP4) with an oscilloscope. 4. Connect motor across HS and GND or connect HS to GND. The simplest way to observe the MIC4604 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. 5. Turn on supplies and HI/LI inputs. Turn on the VIN power supply followed by the VDD power supply. Turn on the HI and LI inputs. Ordering Information Part Number Description MIC4604YM EV 85V Half Bridge Driver Evaluation Board with MIC4604YM device. MIC4604YMT EV 85V Half Bridge Driver Evaluation Board with MIC4604YMT device. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com September 11, 2013 Revision 1.0 Micrel, Inc. MIC4604 Evaluation Board Evaluation Board Performance Figure 1. 4kHz Motor Operation Showing LI, HI, LO, and HO Signals Figure 2. 4kHz Motor Operation Showing LI, HI, HS, and HO Signals Figure 3. 4kHz Motor Operation Showing LI, HI, HS, and LO Signals Figure 4. HS tied to GND Showing LI, HI, LO, and HO Signals September 11, 2013 2 Revision 1.0 Micrel, Inc. MIC4604 Evaluation Board Evaluation Board Schematic (MIC4604YM) Bill of Materials Item C1 Part Number C1608X7R1E105K GRM188R71E105KA12D C1608X7R1E104K C2 C3 C4 Manufacturer TDK Murata (2) (3) AVX GRM188R71E104KA01D Murata 515D107M100DG6AE3 Qty. 1.0µF Ceramic Capacitor, 25V, X7R, Size 0603 1 0.1µF Ceramic Capacitor, 25V, X7R, Size 0603 1 100µF, 100V, Radial Electrolytic Capacitor, 1 1.0µF Ceramic Capacitor, 100V, X7R, Size 1206 1 100V , N-channel MOSFET , SO8 2 85V Half Bridge MOSFET Drivers with 5.5V to 16V Gate Drive 1 TDK 06033C104KAT2A ECA-2AHG101 Description (1) Panasonic (4) (5) Vishay CGA5L2X7R2A105K TDK 12061C105K4Z4A AVX GRF31CR72A105KA01L Murata Q1, Q3 SiR698DP-T1-GE3 Vishay U1 MIC4604YM Micrel, Inc. (6) Notes: 1. TDK: www.tdk.com 2. Murata: www.murata.com 3. AVX: www.avx.com 4. Panasonic: www.panasonic.com 5. Vishay Dale: www.vishay.com. 6. Micrel, Inc.: www.micrel.com. September 11, 2013 3 Revision 1.0 Micrel, Inc. MIC4604 Evaluation Board PCB Layout Recommendations Top Layer: 8-Pin SOIC (M) Bottom Layer: 8-Pin SOIC (M) September 11, 2013 4 Revision 1.0 Micrel, Inc. MIC4604 Evaluation Board Evaluation Board Schematic (MIC4604YMT) Bill of Materials Item C1 Part Number C1608X7R1E105K GRM188R71E105KA12D C1608X7R1E104K C2 C3 C4 Manufacturer TDK Murata (2) (3) AVX GRM188R71E104KA01D Murata 515D107M100DG6AE3 Qty. 1.0µF Ceramic Capacitor, 25V, X7R, Size 0603 1 0.1µF Ceramic Capacitor, 25V, X7R, Size 0603 1 100µF, 100V, Radial Electrolytic Capacitor, 1 1.0µF Ceramic Capacitor, 100V, X7R, Size 1206 1 100V , N-channel MOSFET , SO8 2 85V Half Bridge MOSFET Drivers with 5.5V to 16V Gate Drive 1 TDK 06033C104KAT2A ECA-2AHG101 Description (1) Panasonic (4) (5) Vishay CGA5L2X7R2A105K TDK 12061C105K4Z4A AVX GRF31CR72A105KA01L Murata Q1, Q3 SiR698DP-T1-GE3 Vishay U1 MIC4604YMT Micrel, Inc. (6) Notes: 1. TDK: www.tdk.com 2. Murata: www.murata.com 3. AVX: www.avx.com 4. Panasonic: www.panasonic.com 5. Vishay Dale: www.vishay.com. 6. Micrel, Inc.: www.micrel.com September 11, 2013 5 Revision 1.0 Micrel, Inc. MIC4604 Evaluation Board PCB Layout Recommendations Top Layer: 2.5mm x 2.5mm TDFN-10L (MT) Bottom Layer: 2.5mm x 2.5mm TDFN-10L (MT) September 11, 2013 6 Revision 1.0 Micrel, Inc. MIC4604 Evaluation Board 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 Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. 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. September 11, 2013 7 Revision 1.0