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NCP1601B PDF даташит

Спецификация NCP1601B изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Compact Fixed Frequency Discontinuous or Critical Conduction Voltage Mode Power Factor Correction Controller».

Детали детали

Номер произв NCP1601B
Описание Compact Fixed Frequency Discontinuous or Critical Conduction Voltage Mode Power Factor Correction Controller
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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NCP1601B Даташит, Описание, Даташиты
NCP1601A, NCP1601B
Compact Fixed Frequency
Discontinuous or Critical
Conduction Voltage Mode
Power Factor Correction
Controller
The NCP1601 is a controller designed for Power Factor Correction
(PFC) boost circuits. The device operates in fixed- frequency
Discontinuous Conduction Mode (DCM) and variable- frequency
Critical Conduction Mode (CRM) and takes advantages from both
operating modes. DCM limits the maximum switching frequency. It
simplifies the front- ended EMI filter design. CRM limits the
maximum currents of the boost stage diode, MOSFET and inductor.
It reduces the costs and improves the reliability of the circuit. This
device substantially exhibits unity power factor while operating in
DCM and CRM. The NCP1601 minimizes the required number of
external components. It incorporates high safety protection features
that make the NCP1601 suitable for robust and compact PFC stages.
Features
Near- Unity Power Factor in DCM or CRM
Voltage- Mode Operation
Low Startup and Shutdown Current Consumption
Programmable Switching Frequency for DCM
Synchronization Capability
Overvoltage Protection (107% of Nominal Output Level)
Undervoltage Protection or Shutdown
(8% of Nominal Output Level)
Programmable Overcurrent Protection
Thermal Shutdown with Hysteresis (95/140C)
Two VCC Undervoltage Lockout Hysteresis Options:
4.75 V for NCP1601A and 1.5 V for NCP1601B
These are Pb- Free Devices
Typical Applications
Electronic Light Ballast
AC Adapters
TV & Monitors
Mid- Power Applications
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MARKING
DIAGRAM
8
1
SOIC- 8
D SUFFIX
CASE 751
8
1601x
ALYW
G
1
8
1
PDIP- 8
N SUFFIX
CASE 626
8
NCP1601x
AWL
YYWWG
1
x
A
L, WL
Y, YY
W, WW
G
G
= A or B
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb--Free Package
= Pb--Free Package
PIN CONNECTIONS
FB 1
Vcontrol 2
Ramp 3
CS 4
8 VCC
7 Drv
6 GND
5 Osc
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
Semiconductor Components Industries, LLC, 2010
December, 2010 - Rev. 6
1
Publication Order Number:
NCP1601A/D









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NCP1601B Даташит, Описание, Даташиты
NCP1601A, NCP1601B
AC
Input
EMI
Filter
15 V
FB VCC
Vcontrol Drv
Ramp GND
CS Osc
NCP1601X
Output
Figure 1. Typical Application Circuit
L
Output Voltage (Vout)
AC
Input
EMI
Filter
Cfilter
RCS
Cbulk
on
RFB
IS
IFB
off
1
FB / SD 9 V
Current
Mirror
V reg
VCC
VCC
RS
VCC(on) / 9 V
96% Iref Iref IFB
8 Regulation Block
18 V
+ --
UVLO
Overvoltage
Protection
VCC &
(IFB > 107% Iref)
Shutdown / UVP
Reference
(IFB < 8% Iref)
Block
Zero Current
Internal Bias
Detection
(IS < 14 mA)
CS
4
9V
Current
Mirror
Overcurrent
Protection
(IS > 203 mA)
300 k
Vcontrol Processing
+
-- C1
9V
R1 R2
R3
01
C3
&
--
PFC +
Modulation
Vton
Thermal
Shutdown
(95 / 140 C)
OR
3.9 Vmax
clamp
Ich
1 0 9V
Osc / Sync
5
COSC
9V
45 mA
+
--
94 mA
5 / 3.5 V
01
SQ
&
R
delay
R
SQ
VCC
Output
Driver
Oscillator / Synchronization Block
Vcontrol
2
Ccontrol
Ramp
3
Cramp
Drv
7
GND
6
Figure 2. Functional Block Diagram
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NCP1601B Даташит, Описание, Даташиты
NCP1601A, NCP1601B
PIN FUNCTION DESCRIPTION
Pin Symbol
Function
1 FB
Feedback /
Shutdown
2 Vcontrol Control
3 Ramp
4 CS
Ramp
Current Sense
5 Osc
Oscillator /
Synchronization
6 GND
7 Drv
8 VCC
The IC ground
Drive Output
Supply Voltage
Function
This pin receives a current IFB which is proportional to the PFC circuit output voltage. The current is
for the output regulation, output Overvoltage Protection (OVP), and output undervoltage protection
(UVP).
When IFB goes above 107% Iref, OVP is activated and the Drive Output is disabled.
When IFB goes below 8% Iref, the device enters a low--current consumption shutdown mode.
The voltage of this pin Vcontrol directly controls the input impedance and hence the power factor of
the circuit. This pin is connected to an external capacitor to limit the control voltage Vcontrol band-
width typically below 20 Hz to achieve Power Factor Correction.
This pin is connected to an external capacitor to set a ramp signal. The capacitor value directly
affects the input impedance of the PFC circuit and hence the maximum input power.
This pin sources a current IS which depends on the inductor current and an offset voltage. The
current is for Overcurrent Protection (OCP) and zero current detection.
When IS is above 200 mA, OCP is activated and the Drive Output is disabled.
When IS is below 14 mA, the circuit detects a zero current. This information is used by the on--time
modulation arrangement and by the oscillator block.
In oscillator mode, this pin is connected to an external capacitor to set the oscillator frequency of
the DCM operation.
In synchronization mode, this pin is connected to an external driving signal. The positive edge of the
drive output is synchronized to the negative edge of the external signal in DCM operation.
If the inductor current is non--zero at the end of a switching period, the output drive is not allowed to
turn on. CCM operation is prohibited. Instead, the circuit operates in CRM in this case.
--
This pin provides an output to an external MOSFET.
This pin is the positive supply of the device. The operating range is between 9 V and 18 V with
UVLO start threshold 13.75 V for NCP1601A and 10.5 V for NCP1601B.
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Номер в каталогеОписаниеПроизводители
NCP1601ACompact Fixed Frequency Discontinuous or Critical Conduction Voltage Mode Power Factor Correction ControllerON Semiconductor
ON Semiconductor
NCP1601BCompact Fixed Frequency Discontinuous or Critical Conduction Voltage Mode Power Factor Correction ControllerON Semiconductor
ON Semiconductor

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