Transcript MCP1631/V

vin
Product Presentation
High-Speed,
Microcontroller-adaptable,
PWM Controller
MCP1631
October 2007
© Date: 10/07
vin
© Date: 10/07
vin
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LINEAR
PWM Controller
MCP1631 PWM
© Date: 10/07
vin
DC/DC Offering
Switching
Regulators
PWM
CONTROLLER
Buck
PWM Only
MCP1630/V
High Speed,
MCUadaptable
Buck
PFM/PWM
Boost
PFM/PWM
Auto Switch
MCP1612
Step-Down
TC110
Step-Up
MCP1601
Step-Down
1.0 A
MCP1631/V
High Speed,
MCUadaptable
MCP1602
Power Good
TC105
Step-Down
TC120
Step-Down
TC115
Step-Up
MCP1650/1/2/3
Step-Up
Step-Down
500 mA
MCP1603
SOT-23
Step-Down
500 mA
TC1303/4
Switcher/LDO/PG
TC1313 Switcher
+ LDO
© Date: 10/07
vin
MCP1631/V Part Numbering
Part Type (MCP1631):
Packages:
V if voltage mode
ML = QFN-20
SS = SSOP-20
ST = TSSOP-20
MCP1631VHVT-E/ML
HV if High Voltage
6 to 16V
Otherwise 2.7 to 5.5V
T&R
Temp:
E = -40C to +125C
© Date: 10/07
vin
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The MCP1631 offers integrated:
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MCP1631 vs. MCP1630
Comparator for over voltage detection
Voltage & current sense amplifiers
The MCP1631 offers Shutdown for portable
designs
The MCP1631HV or MCP1631VHV offers
operation from a 6V to 16V rail.

(MCP1631 non-HV same as MCP1630
3.0 to 5.5V rail.)
© Date: 10/07
vin
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What is it?
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MCP1631/V: High-Speed,
MCU-adaptable PWM
High-speed Pulse Width Modulator (PWM)
Analog PWM circuit designed to operate with a
microcontroller in voltage-mode (MCP1631V) or
current mode (MCP1631) control systems
Why ‘attach’?
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With an MCU, the MCP1631 can be used to
develop high-speed, intelligent power-system
controls
Can be used to introduce digital controls into
the analog PWM-function
© Date: 10/07
vin
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MCP1631/V: High-Speed,
MCU-adaptable PWM
Device Functions
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High Speed PWM (Pulse Width Modulator)
 Generates Duty Cycle
 Provides Fast Over-Current Protection
 Utilizes Variable External Inputs (OSC IN,
Ref)
Receives from the MCU
 Clocking
 Reference (or from an independent source)
Supports All SMPS Topology’s
© Date: 10/07
vin
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MCP1631/V Attributes
Device Specifics
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High-speed PWM operation featuring 8.5ns
Current Sense-to-Output delay
Fast output rise and fall times: 2.5nS and
2.7nS, respectively
CMOS output driver (Drives MOSFET Driver
IC or drives low-side N-Channel MOSFET
transistor directly)
Packaging: 20ld QFN/TSSOP/SSOP
Extended operating temperature range:
(-40°C to +125°C)
© Date: 10/07
vin
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Under Voltage Lock Out (UVLO) and Over
temperature protection
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Enhanced safety
Integrated voltage comparator, battery
voltage and current amp, 1A MOSFET driver
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MCP1631 PWM: Key Features
Highly integrated PWM, to help reduce design
cost and space
Available in small 4x4 QFN and standard 20pin TSSOP and SSOP packages
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Meets needs of both cutting-edge compact
designs and traditional developments
© Date: 10/07
vin
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Small, leadless QFN:
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Unique Strengths –
MCP1631/V
So what?: smaller board space
Prove it: leadless packages have very lowprofile and occupy smaller board space
High Frequency Switching:
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So what?: Enables reduced board space
designs
Prove it: Minimizes the physical size of the
required external inductor and capacitors
© Date: 10/07
vin
MCP1631 PWM:
Features, Benefits, Results
Feature
Benefits
Under Voltage Lock Out
(UVLO) and Overtemperature
protection
Enhanced safety
Fewer personal injuries and
destruction of property
System needs available in
single integration
Reduced design costs, space
Meets the needs of both
cutting-edge developments
and traditional designs
Appeals to both edge-pushing
designs and installed base
SMPS input and output
interface:
Results
voltage comparator
 battery-voltage and -current
amplifier
 1A MOSFET driver

Available in small, 4 mm x 4
mm QFN and standard 20-pin
TSSOP and SSOP packages
© Date: 10/07
vin
MCP1631 PWM:
Features, Benefits, Results (Cont’d)
Feature
Benefits
Capable of charging
multiple battery chemistries:
Li-Ion
NiMH
NiCd
Pb-Acid
One Charger does it all
High-frequency Switching
Minimizes physical size
of required external
inductor and capacitors
High-voltage version
Can be directly connected to a
(part # MCP1631HV)
16V rail.
operates 6 V to 16 V, supplies
built-in Linear Regulator
(LDO); standard version (part
# MCP1631) operates from
3.0 to 5.5V
Results
Simplify end-user equipment
Reduced board space
Device of same function can
be used for both 16V and 5V
rail systems
© Date: 10/07
vin
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MCP1631/V: High-Speed,
MCU-adaptable PWM
Where used?
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Power conversion applications that require:
 Medium-to-High levels of intelligence where
the required levels can be variable
 High-speed: Optimally suited for
applications >200 kHz, but can operate at
any frequency up to 1.0 MHz
Application examples
 DC-to-DC converters, multi-phase
 Battery Chargers, NiMH and Li-Ion
© Date: 10/07
vin
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MCP1631/V: High-Speed,
MCU-adaptable PWM
Potential Applications
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Intelligent Power Systems
Multiple Output/Multiple Phase Converters
Smart Battery Chargers
Output Voltage Calibration
Parallel Power Supplies
© Date: 10/07
vin
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Development Support:
MCP1631 Battery Charger
Reference Design
Part # MCP1631RD-MCC1

Includes MCP1631HV and
PIC16F883 microcontroller
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12V input
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Charges 1- or 2-cell Li-Ion,
or 1 - 4 NiMH batteries in
series
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Available for purchase
today, for $50.00 at:
www.microchipdirect.com
© Date: 10/07
vin
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Packages
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Package Options,
Pricing & Availability
4 mm x 4 mm QFN
20-pin TSSOP and SSOP
Pricing - $1.06 - $1.21 each in 10,000-unit
Samples available today at:
http://sample.microchip.com
Volume production available today at:
www.microchipdirect.com
Datasheet DS22063, Application note
AN1137 DS01137 on the product page
© Date: 10/07
vin
Thank You
© Date: 10/07