Microchip Technology MCP1630V User manual

©2005 Microchip Technology Inc. DS21896B-page 1
MCP1630/MCP1630V
Features
• High-Speed PWM Operation (12 ns Current
Sense to Output Delay)
• Operating Temperature Range:
- -40°C to +125°C
• Precise Peak Current Limit (±5%) (MCP1630)
• Voltage Mode and Average Current Mode Control
(MCP1630V)
• CMOS Output Driver (drives MOSFET driver or
low-side N-channel MOSFET directly)
• External Oscillator Input
(from PICmicro®Microcontroller (MCU))
• External Voltage Reference Input (for adjustable
voltage or current output application)
• Peak Current Mode Operation > 1 MHz
• Low Operating Current: 2.8 mA (typ.)
• Fast Output Rise and Fall Times: 5.9 ns and
6.2 ns
• Undervoltage Lockout (UVLO) Protection
• Output Short Circuit Protection
• Overtemperature Protection
Applications
• Intelligent Power Systems
• Smart Battery Charger Applications
• Multiple Output/Multiple Phase Converters
• Output Voltage Calibration
• AC Power Factor Correction
• VID Capability (programmed and calibrated by
PICmicro®microcontroller)
• Buck/Boost/Buck-Boost/SEPIC/Flyback/Isolated
Converters
• Parallel Power Supplies
Related Literature
• “MCP1630 NiMH Demo Board User’s Guide”,
Microchip Technology Inc., DS51505, 2004
• “MCP1630 Low-Cost Li-Ion Battery Charger
User’s Guide”, Microchip Technology Inc.,
DS51555, 2005
• “MCP1630 Li-Ion Multi-Bay Battery Charger
User’s Guide”, Microchip Technology Inc.,
DS51515, 2005
• “MCP1630 Dual Buck Demo Board User’s Guide”,
Microchip Technology Inc., DS51531, 2005
Description
The MCP1630/V is a high-speed Pulse Width Modula-
tor (PWM) used to develop intelligent power systems.
When used with a microcontroller unit (MCU), the
MCP1630/V will control the power systemduty cycle to
provide output voltage or current regulation. The MCU
can be used to adjust output voltage or current, switch-
ing frequency, maximum duty cycle and other features
that make the power system more intelligent.
Typical applications include smart battery chargers,
intelligent power systems, brick dc/dc converters, ac
power-factor correction, multiple output power supplies,
multi-phase power supplies and more.
The MCP1630/V inputs were developed to be easily
attached to the I/O of a MCU. The MCU supplies the
oscillator and reference to the MCP1630/V to provide
the most flexible and adaptable power system. The
power system switching frequency and maximum duty
cycle are set using the I/O of the MCU. The reference
input can be external, a D/A Converter (DAC) output or
as simple as an I/O output from the MCU. This enables
the power system to adapt to many external signals
and variables in order to optimize performance and
facilitate calibration.
When operating in Current mode, a precise limit is set
on the peak current. With the fast comparator speed
(typically 12 ns), the MCP1630 is capable of providing a
tight limit on the maximum switch current over a wide
input voltage range when compared to other high-speed
PWM controllers.
For Voltage mode or Average Current mode
applications, the MCP1630V provides a larger range for
the external ramp voltage.
Additional protection features include: UVLO,
overtemperature and overcurrent.
Package Type
8-Lead DFN
1
2
3
4
8
7
6
5
FB
CS
OSC IN
COMP
VIN
VREF
VEXT
GND
1
2
3
4
8
7
6
5
FB
CS
OSC IN
COMP
VIN
VREF
VEXT
GND
8-Lead MSOP
(2 mm x 3 mm)
High-Speed, Microcontroller-Adaptable,
Pulse Width Modulator

MCP1630/MCP1630V
DS21896B-page 2 ©2005 Microchip Technology Inc.
Functional Block Diagram – MCP1630
MCP1630 High-Speed PWM
R
SQ
Q
EA
+
–
VREF
FB
Comp
+
–
CS
OSC IN
VIN
COMP
GND
VEXT
2R R
VIN
2.7V Clamp
Overtemperature
UVLO
100 kΩ
0.1 µA
0.1 µA
VIN
VIN
Latch Truth Table
SRQ
00Qn
011
100
111
Note: During overtemperature, VEXT driver is high-impedance.
Note

©2005 Microchip Technology Inc. DS21896B-page 3
MCP1630/MCP1630V
Functional Block Diagram – MCP1630V
MCP1630V High-Speed PWM
R
SQ
Q
EA
+
–
VREF
FB
Comp
+
–
CS
OSC IN
VIN
COMP
GND
VEXT
VIN
2.7V Clamp
Overtemperature
UVLO
100 kΩ
0.1 µA
0.1 µA
VIN
VIN
Latch Truth Table
SRQ
00Qn
011
100
111
Note: During overtemperature, VEXT driver is high-impedance.
Note

MCP1630/MCP1630V
DS21896B-page 4 ©2005 Microchip Technology Inc.
Typical Application Circuit – MCP1630
+VBATT
MCP1630
+5V Bias
PIC16LF818
1/2 MCP6042
+8V to +15V Input Voltage
MCP1630 NiMH Battery Charger and Fuel Gauge Application Diagram
4 NiMH Cells
N-channel
1:1
SEPIC Converter
Cin COUT
A/D
PWM OUT
A/D
VDD
I2C™ To System
+VBATT
IBATT
ISW
5.7V
+
VDD
CC
+
+5V Bias
3V
0V
1/2 MCP6042
VDD
+
MOSFET
MCP1700
3.0V
SOT23
GND
CS
VEXT
VIN
COMP
FB
OSC IN
VREF

©2005 Microchip Technology Inc. DS21896B-page 5
MCP1630/MCP1630V
Typical Application Circuit - MCP1630V
Bidirectional Power Converter/Battery Charger for 4-Series Cell Li-Ion Batteries
+
+
Battery
Protection
and
Monitor
+VBATT
-VBATT
Bidirectional Buck/Boost
L
COUT
CIN
DC Bus
Voltage
SMBus
4-Cell Li-Ion
Battery Pack
Battery Protection
Switches
RSENSE
+
–
Boost Buck
Boost
Switch
Buck
Switch
SMBus
ISENSE
VSENSE
Fuse
GND
Sync.
FET
Driver
Comp
FB
CS
VREF
OSC GND
VEXT
VIN
+
–
+
–
+2.5 VREF
Charge Current Loop
DC bus Voltage Loop
0V to 2.7V
IREF Voltage (PWM) +
–
Filter
+DC Bus VREF
PIC16F88
MCP1630V
PS501
(1/2) MCP6021
(1/2) MCP6021
(1/2) MCP6021

MCP1630/MCP1630V
DS21896B-page 6 ©2005 Microchip Technology Inc.
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VDD...................................................................................6.0V
Maximum Voltage on Any Pin ..(VGND - 0.3)V to (VIN + 0.3)V
VEXT Short Circuit Current ...........................Internally Limited
Storage temperature .....................................-65°C to +150°C
Maximum Junction Temperature, TJ...........................+150°C
Continuous Operating Temperature Range ..-40°C to +125°C
ESD protection on all pins, HBM......................................... 3kV
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
AC/
AC/DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, VIN = 3.0V to 5.5V, FOSC = 1 MHz with 10% Duty Cycle, CIN = 0.1 µF,
VIN for typical values = 5.0V, TA= -40°C to +125°C.
Parameters Sym Min Typ Max Units Conditions
Input Voltage
Input Operating Voltage VIN 3.0 — 5.5 V
Input Quiescent Current I(VIN)—2.84.5mAI
EXT =0mA,F OSC IN =0Hz
Oscillator Input
External Oscillator Range FOSC —— 1MHzNote 1
Min. Oscillator High Time
Min. Oscillator Low Time TOH_MIN
TOL_MIN
—10 ns
Oscillator Rise Time TRISE 0.01 — 10 µs Note 2
Oscillator Fall Time TFALL 0.01 — 10 µs Note 2
Oscillator Input Voltage Low VL——0.8V
Oscillator Input Voltage High VH2.0 — — V
Oscillator Input Capacitance COSC 5pf
External Reference Input
Reference Voltage Input VREF 0—V
IN VNote 2, Note 3
Error Amplifier
Input Offset Voltage VOS -4 0.1 +4 mV
Error Amplifier PSRR PSRR 80 99 — dB VIN = 3.0V to 5.0V, VCM =1.2V
Common Mode Input Range VCM GND - 0.3 — VIN VNote 2, Note 3
Common Mode Rejection Ratio — 80 — dB VIN =5V,V
CM = 0V to 2.5V
Open-loop Voltage Gain AVOL 85 95 — dB RL=5kΩto VIN/2, 100 mV < VEAOUT
< VIN - 100 mV, VCM =1.2V
Low-level Output VOL — 25 GND + 50 mV RL = 5 kΩto VIN/2
Gain Bandwidth Product GBWP — 3.5 — MHz VIN =5V
Error Amplifier Sink Current ISINK 511—mAV
IN =5V,V REF = 1.2V, VFB =1.4V,
VCOMP =2.0V
Error Amplifier Source Current ISOURCE -2 -9 — mA VIN =5V,V
REF = 1.2V, VFB =1.0V,
VCOMP = 2.0V, Absolute Value
Note 1: Capable of higher frequency operation depending on minimum and maximum duty cycles needed.
2: External oscillator input (OSC IN) rise and fall times between 10 ns and 10 µs used for characterization testing. Signal
levels between 0.8V and 2.0V with rise and fall times measured between 10% and 90% of maximum and minimum
values. Not production tested.
3: The reference input of the internal amplifier is capable of rail-to-rail operation.

©2005 Microchip Technology Inc. DS21896B-page 7
MCP1630/MCP1630V
TEMPERATURE SPECIFICATIONS
Current Sense Input
Maximum Current Sense Signal
MCP1630 VCS_MAX 0.85 0.9 0.95 V Set by maximum error amplifier
clamp voltage, divided by 3.
Delay From CS to VEXT
MCP1630 TCS_VEXT —1225ns
Maximum Current Sense Signal
MCP1630V VCS_MAX 2.55 2.7 2.85 V VIN > 4.25V
Maximum CS input range limited by
comparator input common mode
range. VCS_MAX =V
IN-1.4V
Delay From CS to VEXT
MCP1630V TCS_VEXT — 17.5 35 ns
Minimum Duty Cycle DCMIN —— 0 %V
FB =V REF +0.1V,
VCS =GND
Current Sense Input Bias Current ICS_B —-0.1— µAV
IN =5V
Internal Driver
RDSON P-channel RDSon_P —1030 Ω
RDSON N-channel RDSon_N —730Ω
VEXT Rise Time TRISE — 5.9 18 ns CL= 100 pF
Typical for VIN =3V
VEXT Fall Time TFALL — 6.2 18 ns CL= 100 pF
Typical for VIN =3V
Protection Features
Under Voltage Lockout UVLO 2.7 — 3.0 V VIN falling, VEXT low state when in
UVLO
Under Voltage Lockout Hysteresis UVLO HYS 50 75 150 mV
Thermal Shutdown TSHD — 150 — °C
Thermal Shutdown Hysteresis TSHD_HYS —18—°C
Electrical Specifications: VIN = 3.0V to 5.5V, FOSC = 1 MHz with 10% Duty Cycle, CIN = 0.1 µF. TA= -40°C to +125°C.
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Operating Junction Temperature Range TA-40 — +125 °C Steady state
Storage Temperature Range TA-65 — +150 °C
Maximum Junction Temperature TJ— — +150 °C Transient
Thermal Package Resistances
Thermal Resistance, 8L-DFN
(2 mm x 3 mm) θJA — 50.8 — °C/W Typical 4-layer board with two
interconnecting vias
Thermal Resistance, 8L-MSOP θJA — 208 — °C/W Typical 4-layer board
AC/DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise noted, VIN = 3.0V to 5.5V, FOSC = 1 MHz with 10% Duty Cycle, CIN = 0.1 µF,
VIN for typical values = 5.0V, TA= -40°C to +125°C.
Parameters Sym Min Typ Max Units Conditions
Note 1: Capable of higher frequency operation depending on minimum and maximum duty cycles needed.
2: External oscillator input (OSC IN) rise and fall times between 10 ns and 10 µs used for characterization testing. Signal
levels between 0.8V and 2.0V with rise and fall times measured between 10% and 90% of maximum and minimum
values. Not production tested.
3: The reference input of the internal amplifier is capable of rail-to-rail operation.

MCP1630/MCP1630V
DS21896B-page 8 ©2005 Microchip Technology Inc.
2.0 TYPICAL PERFORMANCE CURVES
Note: Unless otherwise noted, VIN = 3.0V to 5.5V, FOSC = 1 MHz with 10% Duty Cycle, CIN = 0.1 µF, VIN for typical
values = 5.0V, TA= -40°C to +125°C.
FIGURE 2-1: Input Quiescent Current vs.
Input Voltage.
FIGURE 2-2: Input Quiescent Current vs.
Input Voltage.
FIGURE 2-3: Error Amplifier Frequency
Response.
FIGURE 2-4: Error Amplifier Input Bias
Current vs. Input Voltage.
FIGURE 2-5: Error Amplifier Sink Current
vs. Input Voltage.
FIGURE 2-6: Error Amplifier Source
Current vs. Input Voltage.
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
0
0.5
1
1.5
2
2.5
3
3.5
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
VIN Quiescent Current (mA)
FOSC IN = DC
TA= - 40°C TA= + 25°C
TA= + 125°C
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
VIN Quiescent Current (mA)
FOSC IN = 1 MHz
TA= - 40°C TA= + 25°C
TA= + 125°C
-14
-12
-10
-8
-6
-4
-2
0
2
1000000 10000000
Frequency (Hz)
Amplifier Gain (db)
0
50
100
150
200
250
Amplifier Phase Shift
(degrees)
Gain
Phase
VREF = 2V
RLOAD = 4.7 kΩ
CLOAD = 67 pF
1M 10M5M
-100
0
100
200
300
400
500
600
700
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
Amplifier Input Bias Current
(pA)
VCM = VIN
T
A
= - 40°C
T
A
= + 25°C
TA= + 125°C
TA= + 85°C
0
2
4
6
8
10
12
14
16
18
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
Amplifier Sink Current (mA)
TA= - 40°C
TA= + 25°C
TA= + 125°C
-14
-12
-10
-8
-6
-4
-2
0
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
Amplifier Source Current (mA)
TA= - 40°C
TA= + 25°C
TA= + 125°C

©2005 Microchip Technology Inc. DS21896B-page 9
MCP1630/MCP1630V
Note: Unless otherwise noted, VIN = 3.0V to 5.5V, FOSC = 1 MHz with 10% Duty Cycle, CIN = 0.1 µF, VIN for typical
values = 5.0V, TA= -40°C to +125°C.
FIGURE 2-7: VEXT Rise Time vs. Input
Voltage.
FIGURE 2-8: VEXT Fall Time vs. Input
Voltage.
FIGURE 2-9: Current Sense to VEXT
Delay vs. Input Voltage (MCP1630).
FIGURE 2-10: Current Sense Clamp
Voltage vs. Input Voltage (MCP1630).
FIGURE 2-11: Undervoltage Lockout vs.
Temperature.
FIGURE 2-12: EXT Output N-channel
RDSON vs. Input Voltage.
0
1
2
3
4
5
6
7
8
9
10
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
VEXT Rise Time (ns)
TA= - 40°C
TA= + 25°C
TA= + 125°C
CL= 100 pF
0
1
2
3
4
5
6
7
8
9
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
VEXT Fall Time (ns)
TA= - 40°C
TA= + 25°C
TA= + 125°C
CL= 100 pF
0
5
10
15
20
25
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
CS to VEXT delay (ns)
TA= - 40°CTA= + 25°C
TA= + 125°C
0.895
0.896
0.897
0.898
0.899
0.9
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
CS Clamp Voltage (V)
TA= - 40°C
TA= + 25°C
TA= + 125°C
2.84
2.86
2.88
2.90
2.92
2.94
2.96
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ambient Temperature (°C)
UVLO Threshold (V)
Turn On Threshold
Turn Off Threshold
0
2
4
6
8
10
12
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
EXT Output N-Channel R
DSON
(ohms)
TA= - 40°CTA= + 25°C
TA= + 125°C

MCP1630/MCP1630V
DS21896B-page 10 ©2005 Microchip Technology Inc.
Note: Unless otherwise noted, VIN = 3.0V to 5.5V, FOSC = 1 MHz with 10% Duty Cycle, CIN = 0.1 µF, VIN for typical
values = 5.0V, TA= -40°C to +125°C.
FIGURE 2-13: EXT Output P-channel
RDSON vs. Input Voltage.
FIGURE 2-14: Error Amplifier Input Offset
Voltage vs. Input Voltage.
FIGURE 2-15: Error Amplifier Input Offset
Voltage vs. Input Voltage.
FIGURE 2-16: Current Sense Common
Mode Input Voltage Range vs. Input Voltage
(MCP1630V).
FIGURE 2-17: Current Sense to VEXT
Delay vs. Input Voltage (MCP1630V).
0
2
4
6
8
10
12
14
16
18
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
EXT Output P-Channel R
DSON
(Ohms)
TA= - 40°C
TA= + 25°C
TA= + 125°C
-250
-200
-150
-100
-50
0
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
Error Amp Input Offset Voltage
(µV)
TA= - 40°C
TA= + 25°C
TA= + 125°C
VCM IN = 0V
-200
-150
-100
-50
0
50
100
150
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
Error Amp Input Offset Voltage
(µV)
TA= - 40°C
TA= + 25°C
TA= + 125°C
VCM IN = 1.2V
1.5
1.8
2.1
2.4
2.7
3
33.544.555.5
Input Voltage (V)
Maximum CS Input (V)
CS Common Mode
Input Range
TA= +25°C
0
5
10
15
20
25
30
3
3.25
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage (V)
CS to VEXT Delay (ns)
TA= +25°C
TA= +125°C
TA= -40°C