|
|
PDF MCP1630V Data sheet ( Hoja de datos )
| Número de pieza | MCP1630V | |
| Descripción | Pulse Width Modulator | |
| Fabricantes | Microchip | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MCP1630V (archivo pdf) en la parte inferior de esta página. Total 26 Páginas | ||
|
No Preview Available !
MCP1630/MCP1630V
High-Speed, Microcontroller-Adaptable,
Pulse Width Modulator
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 system duty 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
(2 mm x 3 mm)
8-Lead MSOP
COMP 1
FB 2
CS 3
OSC IN 4
8 VREF
7 VIN
6 VEXT
5 GND
COMP 1
FB 2
CS 3
OSC IN 4
8 VREF
7 VIN
6 VEXT
5 GND
© 2005 Microchip Technology Inc.
DS21896B-page 1
1 page  
MCP1630/MCP1630V
Typical Application Circuit - MCP1630V
Bidirectional Power Converter/Battery Charger for 4-Series Cell Li-Ion Batteries
+
DC Bus
Voltage
–
Bidirectional Buck/Boost
Boost
L
Buck
Boost
CIN Switch
VSENSE
Sync.
FET
Driver
Buck
Switch
COUT
4-Cell Li-Ion
Battery Pack
Battery Protection
Switches
Fuse
SMBus
PS501
+VBATT
Battery
Protection
and
Monitor
-VBATT
0V to 2.7V
MCP1630V
CFoBmpVVRIENF
CS VEXT
OSC GND
+DC Bus VREF
(1/2) MCP6021
+
–
GND
RSENSE
ISENSE
+2.5 VREF
Charge Current Loop
(1/2) MCP6021
+
–
PIC16F88
DC bus Voltage Loop
SMBus
IREF Voltage (PWM)
Filter
+
–
(1/2) MCP6021
© 2005 Microchip Technology Inc.
DS21896B-page 5
5 Page 
MCP1630/MCP1630V
3.0 MCP1630 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
DFN/MSOP
1
2
3
4
5
6
7
8
PIN FUNCTION TABLE
Name
Function
COMP
FB
CS
OSC IN
GND
VEXT
VIN
VREF
Error Amplifier Output pin
Error Amplifier Inverting Input
Current Sense Input pin (MCP1630) or Voltage Ramp Input pin (MCP1630V)
Oscillator Input pin
Circuit Ground pin
External Driver Output pin
Input Bias pin
Reference Voltage Input pin
3.1 Error Amplifier Output Pin (COMP)
COMP is an internal error amplifier output pin. External
compensation is connected from the FB pin to the
COMP pin for control-loop stabilization. An internal
voltage clamp is used to limit the maximum COMP pin
voltage to 2.7V (typ.). This clamp is used to set the
maximum peak current in the power system switch by
setting a maximum limit on the CS input for Peak
Current mode control systems.
3.2 Error Amplifier Inverting Input
(FB)
FB is an internal error amplifier inverting input pin. The
output (voltage or current) is sensed and fed back to
the FB pin for regulation. Inverting or negative
feedback is used.
3.3 Current Sensing Input (CS)
CS is the current sense input pin used for cycle-by-
cycle control for Peak Current mode converters. The
MCP1630 is typically used for sensed current
applications to reduce the current sense signal, thus
reducing power dissipation.
For Voltage mode or Average Current mode
applications, a ramp is used to compare the error
amplifier output voltage with producing the PWM duty
cycle. For applications that require higher signal levels,
the MCP1630V is used to increase the level from a
maximum of 0.9V (MCP1630) to 2.7V (MCP1630V).
The common mode voltage range for the MCP1630V
CS input is VIN-1.4V. For normal PWM operation, the
CS input should be less than or equal to VIN - 1.4V at
all times.
3.4 Oscillator Input (OSC)
OSC is an external oscillator input pin. Typically, a
microcontroller I/O pin is used to generate the OSC
input. When high, the output driver pin (VEXT) is driven
low. The high-to-low transition initiates the start of a
new cycle. The duty cycle of the OSC input pin deter-
mines the maximum duty cycle of the power converter.
For example, if the OSC input is low for 75% of the time
and high for 25% of the time, the duty cycle range for
the power converter is 0% to 75% maximum.
3.5 Ground (GND)
Connect the circuit ground to the GND pin. For most
applications, this should be connected to the analog or
quiet ground plane. Noise on this ground can affect the
sensitive cycle-by-cycle comparison between the CS
input and the error amplifier output.
3.6 External Driver Output Pin (VEXT)
VEXT is an external driver output pin, used to determine
the power system duty cycle. For high-power or high-
side drives, this output should be connected to the logic-
level input of the MOSFET driver. For low-power, low-
side applications, the VEXT pin can be used to directly
drive the gate of an N-channel MOSFET.
3.7 Input Bias Pin (VIN)
VIN is an input voltage pin. Connect the input voltage
source to the VIN pin. For normal operation, the voltage
on the VIN pin should be between +3.0V and +5.5V. A
0.1 µF bypass capacitor should be connected between
the VIN pin and the GND pin.
3.8 Reference Voltage Input (VREF)
VREF is an external reference input pin used to regulate
the output of the power system. By changing the VREF
input, the output (voltage or current) of the power sys-
tem can be changed. The reference voltage can range
from 0V to VIN (rail-to-rail).
© 2005 Microchip Technology Inc.
DS21896B-page 11
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet MCP1630V.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MCP1630 | Pulse Width Modulator |  Microchip Technology |
| MCP16301 | High-Voltage Input Integrated Switch Step-Down Regulator | Microchip |
| MCP16301H | High-Voltage Input Integrated Switch Step-Down Regulator | Microchip |
| MCP1630V | Pulse Width Modulator | Microchip |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |