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IRS2548DのメーカーはInternational Rectifierです、この部品の機能は「SMPS/LED DRIVER PFC HALF-BRIDGE CONTROL IC」です。 |
部品番号 | IRS2548D |
| |
部品説明 | SMPS/LED DRIVER PFC HALF-BRIDGE CONTROL IC | ||
メーカ | International Rectifier | ||
ロゴ | |||
このページの下部にプレビューとIRS2548Dダウンロード(pdfファイル)リンクがあります。 Total 22 pages
September 29, 2011
IRS2548D
SMPS/LED DRIVER PFC + HALF-BRIDGE CONTROL IC
Features
• PFC, system control and half-bridge driver in
one IC
• Critical-conduction mode boost-type PFC
• Programmable PFC over-current protection
• Half Bridge Driver
• Half Bridge Over Current Protection
• Variable Frequency Oscillator
• Fixed internal 1.6us HO and LO deadtime
• Internal bootstrap MOSFET
• Internal 15.6V zener clamp diode on Vcc
• Micropower startup (250µA)
• Latch immunity and ESD protection
Typical Applications
• Isolated LED Drivers
• Power Supplies
Product Summary
Topology
VOFFSET
VOUT
Io+ & I o- (typical)
tON & tOFF (typical)
Deadtime (typical)
Package
Half Bridge
600V
VCC
500mA/500mA
120nS/50nS
1.6uS
14-Lead SOIC
Typical Connection Diagram
http://www.DataSheet4U.com/
L F1
N
GND
RV1
L1 C1
BR1
CY
LP FC
D P FC
CVBUS1 +
C2
MPFC
CVBUS2 +
RO C
RPU
RMAX
RFMAX
RVBUS1
RVCC
RVBUS2
CVBUS
U1
V BUS
HO
1 14
RHO
MHS
RVB US
RFMIN
CCO MP
RZX
FMIN
2
COMP
3
ZX
4
RP FC
ROC
PFC 5
OC 76
ENN
7
VS
13
VB
12
VCC
11
COM
10
LO
9
CS
8
CBS
RLM2
RLM1
+
CVCC2 CVCC1
RLO
RF1
CVS
DCP2
MLS
DCP 1
CRES
CMAX
COC
CCS
RCS
DOUT1
DOUT2
U3
Reg
+5V
CVS
LED+
RV1
COUT
RD1
U2A CF1
RD2
CF2 RF2
RD3
U2B
LED-
RV2
R CL
DO1
DO2
www.irf.com
© 2011 International Rectifier
1 Page IRS2548D
Description
The IRS2548D is a fully integrated, fully protected 600V LED or switched mode power supply control IC with
integrated PFC control for a Boost pre-regulator. The IRS2548D is based on the popular IRS2168D
electronic ballast control IC re-designed for use in LED driver or half-bridge power supply applications. The
PFC circuitry operates in critical conduction mode and provides high PF, low THD and DC bus regulation.
The IRS2548D features include programmable minimum run frequency and adjustable oscillator frequency
that can be driven by an opto isolator or other feedback circuit in a feedback loop for frequency modulation in
resonant systems. The IRS2548D also includes PFC over-voltage and over-current protection, half bridge
over current protection and a logic level enable input that can be used for PWM dimming in LED drivers or
general burst mode operation.
http://www.DataSheet4U.com/
www.irf.com
© 2011 International Rectifier
3
3Pages IRS2548D
Recommended Operating Conditions
For proper operation the device should be used within recommended conditions.
Symbol
Definition
Min.
Max.
VB-VS High Side Floating Supply Voltage
VBSUV+
VCLAMP
VS
Steady State High-side Floating Supply Offset
Voltage
-1
600
VCC
ICC
IENN
Supply Voltage
VCC Supply Current
ENN Pin Current
VCCUV+
††
VCLAMP
10
ICS CS Pin Current
IOC OC Pin Current
-1 1
IZX ZX Pin Current
RFMIN FMIN Pin Programming Resistor
10 300
VB-VS High Side Floating Supply Voltage
-25 125
†† Sufficient current should be supplied to VCC to keep the internal 15.6 V zener regulating at VCLAMP.
Units
V
mA
KOhm
ºC
Electrical Characteristics
VCC = VBS = VBIAS=14V +/- 0.25V, CLO = CHO = CPFC = 1000pF, RFMIN = 42.2kOhm,
VENN = VCOMP = VCS = VOC = VBUS = VZX = 0V, TA=25C unless otherwise specified.
Symbol
Definition
Min Typ Max Units Test Conditions
Supply Characteristics
VCCUV+
VCC Supply Undervoltage Positive
Going Threshold
VCCUV-
VCC Supply Undervoltage Negative
Going Threshold
VUVHYS
VCC Supply Undervoltage Lockout
Hysteresis
IQCCUV UVLO Mode VCC Quiescent Current
IQCCFLT VCC Quiescent current in fault mode
ICCRUN Run Mode VCC Supply Current
VCLAMP VCC Zener Clamp Voltage
http://www.DataSheet4U.com/
11.5
9.5
1.5
---
---
---
14.6
12.5
10.5
2.0
250
400
5.5
15.6
13.5 V
11.5
3.0
--- µA
---
--- mA
16.6 V
VCC rising from
0V
VCC falling from
14V
VCC = 8V
MODE=FAULT
MODE = RUN
VBUS=4V
ENN=1nF
PFC off time = 5us
ICC = 10mA
www.irf.com
© 2011 International Rectifier
6
6 Page | |||
ページ | 合計 : 22 ページ | ||
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PDF ダウンロード | [ IRS2548D データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
IRS2548D | SMPS/LED DRIVER PFC HALF-BRIDGE CONTROL IC | International Rectifier |