|
|
PDF IRS2505LPBF Data sheet ( Hoja de datos )
| Número de pieza | IRS2505LPBF | |
| Descripción | Boost PFC and SMPS Control IC | |
| Fabricantes | Infineon | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de IRS2505LPBF (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
SMPS
µPFCTM
IRS2505LPBF
Boost PFC and SMPS Control IC
Features
Description
Critical-conduction mode PFC control (CrCM)
High PF and ultra-low THD
Wide line and load range
Regulated DC output voltage
No secondary winding required
Cycle-by-cycle over-current protection
Output over-voltage protection
Ultra-low start-up current
20.8V internal zener clamp on VCC
Excellent ESD and latch immunity
RoHS compliant
5-pin SOT-23 package
Applications
The IRS2505L is a control IC for PFC boost
converters operating in critical-conduction mode.
The IC incorporates a voltage feedback loop for
output voltage regulation combined with smart
zero crossing detection to control the gate drive
output without the need for a secondary inductor
winding. DC output over-voltage protection and
cycle-by-cycle over-current protection are also
included. Multi-functional inputs enable the
IRS2505L to perform all functions with only 5
pins.
Package Options
Off-line power supply
Electronic ballast
LED power supply
5 Lead SOT23
Application Diagram
Rect (+)
VCC (+)
VCC (-)
CMP
1
COM
2
VCC
3
VBUS
5
PFC
4
DC Bus (+)
Rect (-)
Ordering Information
Base Part Number
IRS2505LPBF
Package Type
5L-SOT-23
DC Bus (-)
Standard Pack
Form
Quantity
Tape and Reel
3000
Orderable Part Number
IRS2505LTRPBF
1 2015-9-2
1 page  
IRS2505LPBF
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may
occur. All voltage parameters are absolute voltages referenced to COM, all currents are
defined positive into any pin. The thermal resistance and power dissipation ratings are
measured under board mounted and still air conditions.
Symbol
VPFC
VBUS
ICC
ICMP
PD
Rθja
Tj
Ts
TL
Definition
PFC pin voltage
VBUS pin voltage
VCC pin supply current†
CMP pin current††
Package power dissipation
@ Ta +25 ºC
Thermal resistance, junction to
ambient
SOT-23 5L
SOT-23 5L
Junction temperature
Storage temperature
Lead temperature (soldering, 10 seconds)
Min.
-0.3
-0.3
---
---
---
---
-55
-55
---
Max.
VCC + 0.3
VCC + 0.3
25
1
Units
V
mA
0.5 W
191 ºC/W
150
150 ºC
300
† This IC contains a voltage clamp structure between the chip VCC and COM which has a
nominal breakdown voltage of 20.8V. This supply pin should not be driven by a DC, low
impedance power source greater than the VCLAMP specified in the Electrical
Characteristics section.
This IC contains a voltage clamp structure between the CMP and COM which has a
†† nominal breakdown voltage of 10.2V. This pin should not be driven by a DC, low
impedance power source greater than the VZCMP specified in the Electrical
Characteristics section.
5 2015-9-2
5 Page 
IRS2505LPBF
V, I
AC Line Voltage
Inductor Current
AC Line Current
Cross-over
distortion
time
Figure 2: PFC inductor current during the rectified AC line voltage cycle.
The IRS2505 internal control circuit blocks shown in figure 3 include; the feedback error amplifier controlling
on-time via timing capacitor (CT), zero-crossing (ZX) detection and off-time control, gate drive output, over-voltage
protection (OVP) and over-current protection (OCP). The PFC pin is a multi-function input/output pin used for driving
the external PFC MOSFET gate and also for sensing the PFC inductor current zero-crossing during the off-time. The
VBUS pin is also a multi-function pin used for monitoring the DC bus voltage through an external divider network and
also measuring the MOSFET (MPFC) source current. An internal OTA compares the voltage feedback with an
accurate internal voltage reference (VBUSREG) to control the CMP pin voltage by charging and discharging the
external compensation capacitor (CCMP). The voltage level at the CMP pin determines the on-time to control power
transfer to the output. The MOSFET current is measured with a current-sensing resistor and then AC-coupled onto
the VBUS pin through an external series resistor and capacitor.
RECT (+)
VBUS (+)
(+)
9...19.8V
(-)
VCC
3
2
COM
PFC
4
UVLO
OFF
Time
PFC
Logic
OCP
OVP
ON
Time
CT
VBUS
5
4.1V
CMP
1
+
RECT (-)
Figure 3: PFC control circuitry
11
VBUS (-)
2015-9-2
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet IRS2505LPBF.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| IRS2505LPBF | SOT-23 Boost PFC Control IC |  International Rectifier |
| IRS2505LPBF | Boost PFC and SMPS Control IC | Infineon |
| 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 |