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STMicroelectronics Electronic Components Datasheet

DAP005 Datasheet

Advanced transition-mode PFC controller

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DAP005 pdf
DAP005
Features
Advanced transition-mode PFC controller
Custom Data
Transition-mode control of PFC pre-regulators
Very precise adjustable output overvoltage
protection
Tracking boost function
Protection against feedback loop failure
(Latched shutdown)
Interface for cascaded converter's PWM
controller
Input voltage feedforward (1/V2)
AC brownout protection
Low (90µA) start-up current
< 5mA quiescent current
1.4% (@ TJ = 25°C) internal reference voltage
-600/+800 mA totem pole gate driver with
active pull-down during UVLO
SO14 package
SO-14
Applications
PFC pre-regulators for:
HI-END AC-DC adapter/charger
Desktop PC, server, WEB server
IEC61000-3-2 OR JEIDA-MITI compliant
SMPS, in excess of 250W
Table 1. Device summary
Part number
Package
DAP005
SO-14
DAP005TR
SO-14
Packaging
Tube
Tape & Reel
Figure 1.
Block diagram
TBO
VCC
GND
ZCD
AC_OK
TRACKING
BOOST
6 1:1
CURRENT
MIRROR
1:1
BUFFER
3V
14
INV
1
2.5V
-
+
VOLTAGE
from REGULATOR
VFF
COMP
MULT
VFF
23
5
1/V2
Ideal diode
LINE VOLTAGE
MULTIPLIER
FEEDFORWARD
Voltage
references
-+
1.7V
-+
LEADING-EDGE
BLANKING
4
Vbias
(INTERNAL SUPPLY BUS)
INDUCTOR
SATURATION
DETECTION
Q
SAT
VCC
CS
12
11
1.4V
0.7V
UVLO
R1 COMPARATOR
+
R2
-
VREF2
UVLO
ZERO CURRENT
DETECTOR
RQ
S
15 V
Driver
Starter
OFF
STARTER
13
GD
0.2V
0.26V
10
-
0.52V
0.6V
ON/OFF CONTROL
(BROWNOUT DETECTION)
DISABLE
9
PWM_STOP
LATCH
SAT
Vbias
8
FEEDBACK
FAILURE
PROTECTION
PWM_LATCH
PFC_OK
7
2.5V
February 2007
Rev 1
This is a document intended for a specific Customer. It must not be released without first contacting Division marketing.
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39


STMicroelectronics Electronic Components Datasheet

DAP005 Datasheet

Advanced transition-mode PFC controller

No Preview Available !

DAP005 pdf
Contents
Contents
DAP005
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Typical electrical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 Feedback Failure Protection (FFP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.3 Voltage Feedforward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.4 THD optimizer circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.5 Tracking Boost function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.6 Inductor saturation detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.7 Power management/housekeeping functions . . . . . . . . . . . . . . . . . . . . . . 28
7 Brownout protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.1 Summary of DAP005 idle states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8 Application examples and ideas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
2/39


Part Number DAP005
Description Advanced transition-mode PFC controller
Manufacturer STMicroelectronics
Total Page 30 Pages
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