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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP14700 Datasheet

Dual Input Synchronous MOSFET Driver

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MCP14700 pdf
MCP14700
Dual Input Synchronous MOSFET Driver
Features
• Independent PWM Input Control for High-Side
and Low-Side Gate Drive
• Input Logic Level Threshold 3.0V TTL Compatible
• Dual Output MOSFET Drive for Synchronous
Applications
• High Peak Output Current: 2A (typical)
• Internal Bootstrap Blocking Device
• +36V BOOT Pin Maximum Rating
• Low Supply Current: 45 µA (typical)
• High Capacitive Load Drive Capability:
- 3300 pF in 10.0 ns (typical)
• Input Voltage Undervoltage Lockout Protection
• Overtemperature Protection
• Space Saving Packages:
- 8-Lead SOIC
- 8-Lead 3x3 DFN
Applications
• 3-Phase BLDC Motor Control
• High Efficient Synchronous DC/DC Buck
Converters
• High Current Low Output Voltage Synchronous
DC/DC Buck Converters
www.DataSheet4HUi.gcohmInput Voltage Synchronous DC/DC Buck
Converters
• Core Voltage Supplies for Microprocessors
General Description
The MCP14700 is a high-speed synchronous
MOSFET driver designed to optimally drive a high-side
and low-side N-Channel MOSFET. The MCP14700
has two PWM inputs to allow independent control of the
external N-Channel MOSFETs. Since there is no
internal cross conduction protection circuitry the
external MOSFET dead time can be tightly controlled
allowing for more efficient systems or unique motor
control algorithms.
The transition thresholds for the PWM inputs are
typically 1.6V on a rising PWM input signal and typically
1.2V on a falling PWM input signal. This makes the
MCP14700 ideally suited for controllers that utilize 3.0V
TTL/CMOS logic. The PWM inputs are internally pulled
low ensuring the output drive signals are low if the
inputs are floating.
The HIGHDR and LOWDR peak source current
capability of the MCP14700 device is typically 2A.
While the HIGHDR can sink 2A peak typically, the
LOWDR can sink 3.5A peak typically. The low
resistance pull-up and pull-down drive allow the
MCP14700 to quickly transition a 3300 pF load in
typically 10 ns. Bootstrapping for the high-side drive is
internally implemented which allows for a reduced
system cost and design complexity.
The MCP14700 features under voltage lock out
(UVLO) with a typical hysteresis of 500 mV.
Overtemperature protection with hysteresis is also
featured on the device.
Package Types
MCP14700
SOIC
PHASE 1
PWMHI 2
PWMLO 3
GND 4
8 HIGHDR
7 BOOT
6 VCC
5 LOWDR
MCP14700
3x3 DFN*
PHASE 1
8 HIGHDR
PWMHI 2 EP 7 BOOT
PWMLO 3 9 6 VCC
GND 4
5 LOWDR
* Includes Exposed Thermal Pad (EP); see Table 3-1.
© 2009 Microchip Technology Inc.
DS22201A-page 1



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP14700 Datasheet

Dual Input Synchronous MOSFET Driver

No Preview Available !

MCP14700 pdf
MCP14700
Typical Application Schematic
Synchronous Buck Application
VCC = 5.0V
CBOOT
BOOT
VCC HIGHDR
MCP14700
PWMHI PHASE
PWMLO LOWDR
GND
VBUCK = 30V
CURRENT
SENSE
dsPIC33FJ06GS101
PWM1L
AN0
PWM1H
AN1
CURRENT
SENSE
3-Phase BLDC Motor Control Application
VCC
www.DataSheet4U.com
PWM1
PWM2
BOOT
VCC HIGHDR
MCP14700
PWMHI PHASE
PWMLO LOWDR
GND
VCC
PWM3
PWM4
BOOT
VCC HIGHDR
MCP14700
PWMHI PHASE
PWMLO LOWDR
GND
SENSE
NODE
24V 24V
SENSE
NODE
24V
VREF
BOOT
HIGHDR VCC
MCP14700
PHASE PWMH
VCC
PWM5
PWM6
LOWDR PWMLO
GND
SENSE
NODE
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
dsPIC
DS22201A-page 2
© 2009 Microchip Technology Inc.



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP14700 Datasheet

Dual Input Synchronous MOSFET Driver

No Preview Available !

MCP14700 pdf
Functional Block Diagram
VCC
PWMHI
PWMLO
Input
Circuitry
Level
Shift
Logic
GND
VCC Protection
Circuitry
MCP14700
BOOT
HIGHDR
PHASE
VCC
LOWDR
GND
www.DataSheet4U.com
© 2009 Microchip Technology Inc.
DS22201A-page 3




Part Number MCP14700
Description Dual Input Synchronous MOSFET Driver
Maker Microchip Technology
Total Page 26 Pages
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