MIC4100/1/3/4 Family Evaluation Board General Description The MIC4100, MIC4101, MIC4103 and MIC4104 are a family of high-frequency, 100V MOSFET drivers. Each part contains a high-side and low-side driver and will drive many switching power supply topologies. Refer to the MIC4100/1 and MIC4103/4 specifications for detailed information. This evaluation board provides a platform for evaluating any of the drivers. The evaluation board schematic is shown in Figure 1. A 1µf, 100V ceramic capacitor is connected between the “HV Supply Input” and “Ground” terminals and provides high frequency decoupling on the board. 0.1µf capacitors are used for decoupling the VDD and HB pins of the driver. 100V, N-Channel, SO-8 FETs are included with the board. Specifications Control IC (refer to board for part ID): MIC4100/1 or MIC4103/4 Power Supply Topology: Drives an on-board MOSFET Bridge Recommended “HV Supply” terminal voltage: 8V to 100V Maximum recommended “VDD” terminal voltage: 16V Maximum “High Side FET Source” terminal voltage: 100V Maximum HI/LI/LS terminal voltage: VDD Precautions The evaluation board does not have input reverse polarity protection. Applying a negative voltage at the “HV Supply” or “VDD” terminals (with respect to the GND terminal) may permanently damage the components on the board. The voltage on the HI and LI terminals should not exceed the “VDD” terminal voltage. Requirements At a minimum, the evaluation board requires an 8V to 16V supply to power the MIC410x driver. Another supply (up to 100V) may be used to power the MOSFETs at the “HV Supply” terminal. A pulse generator or the output of a PWM control IC may be connected to the HI and/or LI terminals. The board can be used with any of the 4 driver IC’s. MIC4100/3: The HI and LI inputs have a CMOS compatible threshold. The high-side and low-side drivers are independently controlled by the HI and LI inputs. The inputs may be connected to separate PWM sources or can be connected together. MIC4101/4: Same as the MIC4100/3 but the inputs have a TTL compatible threshold. Getting Started The simplest way to observe driver operation is to connect the “High Side FET Source” terminal to ground (or any voltage potential under 100V) and apply a PWM signal to the “HI” and/or “LI” input terminals. DC and AC parameters can be measured in this configuration. The included SO-8 MOSFETs can be removed or replaced with different FETs. D2PAK locations are provided on the back of the board. The source terminal of the high-side FET and drain terminal of the low-side FET, are floating and accessible through the board terminals. This allows the board to be used with different power topologies such as the synchronous buck, half-bridge, full-bridge or two transistor forward converter. Ordering Information Part Number MIC4100YM EV MIC4101YM EV Description Evaluation board with MIC4100YM device with CMOS input half-bridge MOSFET driver Evaluation board with MIC4101YM device with TTL input half-bridge MOSFET driver Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com May 2008 M9999-051508-B Micrel, Inc. MIC4100/1/3/4 Evaluation Board Evaluation Board Schematic VDD J1 VDD J6 HV Supply C1 0.1µF C2 0.1µF 1 VDD HB 2 HO 3 5-8 4 1-3 Q1 SI4484EY C3 1µF/100V 2 5 J3 HI 3 U1 MIC4100/1YM/BM 6 J4 J7 High-Side FET Source 4 HS LI Q1-A OPEN 1 J8 Low-Side FET Source 2 7 1 8 LO VSS Q2-A OPEN 3 5-8 4 1-3 Q2 SI4484EY J2 Ground Bill of Materials Item C1, C2 C3 Part Number VJ0603Y104KXXAT Vishay TDK(2) C3225X7R2A105M TDK(2) Q1, Q2 Si4484EY Description Qty 0.1µF/25V, X7R, 0603 Ceramic Capacitor 2 0.1µF/100V, X7R, Ceramic Capacitor 1 100V N-channel MOSFET 2 (3) Murata Vishay Siliconix(1) (1) Q1A, Q2A R4 (1) C4532X7R2A105M GRM55DR72A105KA01B R3 Manufacturer OPEN location for D2PAK FETs 2 CRCW06033K83FKEA Vishay Siliconix Vishay Dale(4) 3.83k, 1%, 0603 Resistor 1 CRCW06032K49FKEA (4) 2.49k, 1%, 0603 Resistor 1 Buck Controller 1 Vishay Dale MIC4100YM U1 MIC4101YM MIC4103YM* Micrel(4) MIC4104YM* Notes: 1. Vishay: www.vishay.com 2. TDK: www.tdk.com 3. Murata: www.murata.com 4. Micrel: www.micrel.com * User has to order IC separately May 2008 2 M9999-051508-B Micrel, Inc. MIC4100/1/3/4 Evaluation Board PCB Layout Recommendations Top Layer Bottom Layer May 2008 3 M9999-051508-B Micrel, Inc. MIC4100/1/3/4 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 The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. 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. © 2007 Micrel, Incorporated. May 2008 4 M9999-051508-B