PFS757HG POWERINT [Power Integrations, Inc.], PFS757HG Datasheet - Page 7

• Manufacturer Part Number: PFS757HG
• Description: Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs
• Manufacturer: POWERINT [Power Integrations, Inc.]

Figure 4.
www.powerint.com
CURREN LIMIT
and STANDBY
ENABLE (EN)
Functional Block Diagram for Flyback/Standby Converter.
SELECT
BYPASS (BP)
115 µA
ENABLE
1.0 V + V
1.0 V
T
LATCH OFF
REMOTE
REMOTE
MAIN
MAIN
OVP
ON/
ON
OSCILLATOR
6.0 V
COUNTER
RESTART
AUTO-
JITTER
RESET
CLOCK
SAW
DC
CLK2
D
SAW
2MAX
MAX
CLK2
PRESENT
FAULT
LV (LINE VOLTAGE)
D
2MAX
PRESENT
FAULT
ENABLE PULL
UP RESISTOR
SELECT AND
LIMIT STATE
CURRENT
MACHINE
SHUTDOWN
THERMAL
S
R
5.7 V
4.7 V
Q
Q
+
-
THERMAL SD
REGULATOR
BYPASS PIN
UNDER-VOLTAGE
5.7 V
CURRENT LIMIT
COMPARATOR
ADJUST
TFS757-764HG
I
LIMIT
V
BLANKING
IN
LEADING
EDGE
+
STANDBY DRAIN (DSB)
-
V
I LIMIT
PI-5264-020510
SOURCE (S)
Rev. C 02/11
7