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PDF L6564 Data sheet ( Hoja de datos )
| Número de pieza | L6564 | |
| Descripción | 10 pin transition-mode PFC controller | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L6564 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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L6564
10 pin transition-mode PFC controller
Features
■ Fast “bidirectional” input voltage feedforward
(1/V2 correction)
■ Accurate adjustable output overvoltage
protection
■ Protection against feedback loop
disconnection (latched shutdown)
■ Inductor saturation protection
■ AC brownout detection
■ Low (≤100 µA) start-up current
■ 6 mA max. operating bias current
■ 1% (@ TJ = 25 °C) internal reference voltage
■ -600/+800 mA totem pole gate driver with
active pull-down during UVLO
■ SSOP10 package
SSOP10
Applications
PFC pre-regulators for:
■ High-end AC-DC adapter/charger
■ Desktop PC, server, Web server
■ IEC61000-3-2 or JEITA-MITI compliant SMPS
Figure 1.
Block diagram
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September 2009
Doc ID 16202 Rev 1
1/34
www.st.com
34
1 page  
L6564
1 Description
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Description
The L6564 is a current-mode PFC controller operating in transition mode (TM) and
represents the compact version of L6563S as it embeds the same driver, reference and
control stages in a very compact 10 pin SO package.
The highly linear multiplier, along with a special correction circuit that reduces crossover
distortion of the mains current, allows wide-range-mains operation with an extremely low
THD even over a large load range.
The output voltage is controlled by means of a voltage-mode error amplifier and an accurate
(1% @TJ = 25 °C) internal voltage reference. The loop stability is optimized by the voltage
feedforward function (1/V2 correction), which in this IC uses a proprietary technique that
considerably improves line transient response as well in case of mains both drops and
surges ( "bidirectional").
In addition to overvoltage protection able to control the output voltage during transient
conditions, the IC also provides protection against feedback loop failures or erroneous
settings. Other on-board protection functions allow brownout conditions and boost inductor
saturation to be safely handled.
The totem-pole output stage, capable of 600 mA source and 800 mA sink current, is suitable
for high power MOSFET or IGBT drive. This, combined with the other features and the
possibility to operate with ST's proprietary fixed-off-time control, makes the device an
excellent solution for SMPS up to 400 W that require compliance with EN61000-3-2 and
JEITA-MITI standards.
Doc ID 16202 Rev 1
5/34
5 Page 
L6564
Table 4.
Symbol
Electrical characteristics (continued)
Parameter
Test condition
Voltage feedforward
VVFF Linear operation range
ΔV Dropout VMULTpk-VVFF
ΔVVFF
ΔVVFF
Line drop detection thresh.
Line drop detection thresh.
RDISCH Internal discharge resistor
Vcc < VccOn
Vcc > or = to VccOn
Below peak value
Below peak value Tj =25°C
Tj = 25 °C
VDIS
VEN
Disable threshold
Enable threshold
Zero current detector
(2) voltage falling
(2) voltage rising
VZCDH
VZCDL
VZCDA
Upper clamp voltage
Lower clamp voltage
Arming voltage
(positive-going edge)
Triggering voltage
VZCDT (negative-going edge)
IZCDb
IZCDsrc
IZCDsnk
Input bias current
Source current capability
Sink current capability
Gate driver
IZCD = 2.5mA
IZCD = - 2.5mA
VZCD = 1 to 4.5V
VOL Output low voltage
Isink = 100mA
VOH Output high voltage
Isource = 5mA
Isrcpk Peak source current
Isnkpk Peak sink current
tf Voltage fall time
tr Voltage rise time
VOclamp Output clamp voltage
Isource = 5mA; Vcc = 20V
UVLO saturation
Vcc= 0 to VCCon, Isink= 2mA
1. Parameters tracking each other
( )2.
3.
The multiplier output is given by:
Parameters tracking each other
Vcs
= VCS_Ofst
+
KM
⋅
VMULT ⋅ VCOMP −2.5
VV2FF
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Electrical characteristics
Min. Typ. Max. Unit
1 3V
800
mV
20
40 70 100 mV
50 70 90 mV
7.5 10 12.5
kΩ
5 20
0.745 0.8 0.855 V
0.845 0.88 0.915 V
5.0 5.7
-0.3 0 0.3
V
V
1.1 1.4 1.9 V
0.5 0.7 0.9 V
-2.5 -4
2.5 5
1 µA
mA
mA
0.6 1.2
9.8 10.3
-0.6
0.8
30 60
45 110
10 12 15
1.1
V
V
A
A
ns
ns
V
V
Doc ID 16202 Rev 1
11/34
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet L6564.PDF ] | |
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