PFS757HG POWERINT [Power Integrations, Inc.], PFS757HG Datasheet - Page 6

• 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 3.
Rev. C 02/11
and MAIN CURRENT
FEEDBACK (FB)
6
LIMIT SELECT
OPERATING VOLTAGE (VDDH)
LINE-SENSE (L)
RESET (R)
BYPASS (BP)
HSD1
HSD2
PWM INPUT
Functional Block Diagram for Two-Switch Forward Converter.
TFS757-764HG
HIGH-SIDE
3 V+VT
V BG
MAIN REMOTE-ON
REMOTE
SENSE
LINE
OFF
LV
LV
FAULT PRESENT
D
12 V
2MAX
REMOTE OFF
CLK2
DISCRIMINATOR
SAW
R
L
SOFT-START
INPUT
POWER ON
PWM
11.1 V
9.9 V
SELECT
CYCLE
DUTY
LIMIT
I
LIMIT
COMPARATOR
VI
UNDERVOLTAGE
STOP
DSS
LIMIT
GATE
PWM
CLK
D
ON
MAX
-
+
VDDH
+
PI-5263-021511
S
R
Q
R
S
THERMAL SD
Q
CURRENT LIMIT
CONTROLLED
GATE DRIVER
COMPARATOR
TURN-ON
BLANKING
+
-
LEADING
PI-5516-060410
EDGE
HSD1
www.powerint.com
GATE
HS
HSD2
SOURCE (HS)
DRAIN (HD)
HIGH-SIDE
HIGH-SIDE
SOURCE (S)
DRAIN (D)