ICE1CS02 Datasheet, PDF (6/27 Pages) Infineon Technologies AG – Combi PFC/ PWM Controller

Combi PFC/ PWM Controller
ICE1CS02
Pin Configuration and Functionality
1 Pin Configuration and Functionality
1.1
Pin Configuration
Pin Symbol
Function
1 PFC ICOMP Current Loop Compensation
2 PFC VSENSE V_BUS Sense Input
3
PFC OVP V_BUS Overvoltage Sense
Input
4 PFC VCOMP Voltage Loop Compensation
5
GND
Controller Ground
6 PFC OUT GATE OUT
7
VCC
Controller Supply Voltage
8 PWM OUT GATE OUT
9
PWM CS Current Sense
10 PWM SYNC/ Dual function pin: SYNC and
Duty Cycle Duty Cycle Setting
11 PWM Preshort Adjustable Blanking Time
Input
12 PWM FB Feedback
13
VREF
5V reference voltage
14 VINS HYS Input Voltage Hystersis
15
VINS
Input Voltage Brown out
16 PFC ISENSE Current Sense Input
Figure 1 Pin Configuration(top view)
Package:PG -D IP-16-4 /PG -D SO -16-17
PFC
ICOMP
1
PFC
VSENSE
2
PFC OVP
3
PFC
VCOMP
4
GND
5
PFC OUT
6
VCC
7
PWM OUT
8
16
PFC
ISENSE
15
VINS
14
VINS_HYS
13
VREF
12
PWM FB
11
PWM PreShort
10
PWM SYNC
9
PWM CS
1.2
Pin Functionality
PFC ICOMP (Current Loop Compensation)
Low pass filter and compensation of the current control
loop. The capacitor which is connected at this pin
integrates the output current of OTA2 and averages the
current sense signal.
PFC VSENSE (Voltage Sense/Feedback)
The output bus voltage is sensed at this pin via a
resistive divider. The reference voltage for this pin is
3V.
PFC OVP (Overvoltage Sense Input)
The output bus overvoltage is sensed at this pin via a
resistive divider. The reference voltage for this pin is
3V.
PFC VCOMP (Voltage Loop Compensation)
This pin provides the compensation of the output
voltage loop with a compensation network to ground
(see Figure 2). This also gives the soft start function
which controls an increasing AC input current during
start-up.
GND (Ground)
The GND pin is the ground of the controller.
PFC OUT (PFC Gate Output)
This pin is the output of the internal driver stage, which
has a capability of 1.5A source and 2.0A sink current.
Its gate drive voltage is clamped at 15V (typically).
VCC (Power Supply)
The VCC pin is the positive supply of the IC and should
be connected to an external auxiliary supply. The
operating range is between 11V and 26V. The turn-on
threshold is at 12V and under voltage occurs at 11V.
There is no internal clamp for a limitation of the power
supply.
PWM OUT (PWM Gate Output)
This pin is the output of the internal driver stage, which
has a capability of 1.5A source and 2.0A sink current.
Its gate drive voltage is clamped at 15V (typically).
Version 1.0
6
25 July 2008