ICE3AR1580VJZ Datasheet, PDF (11/43 Pages) Infineon Technologies AG – Of f -Line SMPS Cur rent Mode Cont rol ler wi th integrated 800V

CoolSET™ F3R80
ICE3AR1580VJZ
Functional Description
3
Functional Description
All values which are used in the functional description are typical values. For calculating the worst cases the
min/max values which can be found in section 4 Electrical Characteristics have to be considered.
3.1
Introduction
ICE3AR1580VJZ input OVP and jitter 800V version is the modified version of the ICE3ARxx80JZ. It is particular
good for high voltage margin low power SMPS application such as white goods, auxiliary power supply for PC and
server. The major characteristics are that the IC is developed with 800V CoolMOS™ with start up cell, having
adjustable input OVP feature, running at 100kHz switching frequency and packed in DIP-7 package.
The familiar features are BiCMOS technology to reduce power consumption and increase the Vcc voltage range,
cycle by cycle current mode control, built-in 10ms soft start to reduce the stress of switching elements during start up,
built-in 20ms and extended blanking time for short period of peak power before entering protection, active burst mode
for lowest standby power and propagation delay compensation for close power limit between high line and low line,
frequency jittering for low EMI performance, the built-in auto-restart mode protections for open loop, over load, Vcc
OVP, Vcc under voltage, etc.
Besides, it also includes narrowing the feedback voltage swing from 0.5V to 0.3V during burst mode so that the
output voltage ripple can be reduced by 40%, reduction of the fast voltage fall time of the MOSFET by increasing
the soft turn-on time and addition of 50Ω turn-on resistor, faster start up time by optimizing the Vcc capacitor to
10uF and over temperature protection with 50°C hysteresis.
Furthermore, it includes adjustable input OVP to suppress the abnormal input stress to damage the device,
selectable entry and exit burst mode for smaller entry/exit power to burst mode or even no burst mode is possible and
the propagation delay compensation for burst mode so that the entry/exit burst mode power is close between high
line and low line.
In summary, the ICE3AR1580VJZ provides good voltage margin of MOSFET, lowest standby power, flexible
burst level, reduced output ripple during burst mode, robust for abnormal input stress with input OVP feature,
accurate power limit for both maximum power and burst power, low EMI with frequency jittering and soft gate
drive, built-in and flexible protections, etc. Therefore, ICE3AR1580VJZ is a complete solution for the low power
SMPS application typically for white goods.
3.2
Power Management
Drain
VCC
Startup Cell
CoolMOS^®
Power Management
Internal Bias
Power-Down Reset
Soft Start block
Undervoltage Lockout
17V
10.5V
Voltage
5.0V
Reference
Auto Restart
Mode
Active Burst Mode
Figure 4:
Power Management
The Undervoltage Lockout monitors the external supply voltage V_VCC. When the SMPS is plugged to the main line the
internal Startup Cell is biased and starts to charge the external capacitor C_VCC which is connected to the VCC pin. This
Data Sheet
11
V2.0, 2014-01-20