Microchip MIC4100/1/3/4 Manual

Microchip Ikke kategoriseret MIC4100/1/3/4

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Side 1/4
MIC4100/1/3/4
Family Evaluation Board
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
June 2008 M9999-061708-C
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 oating 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.

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: MIC4100/1/3/4

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