21HS-50H
ICs ADDITIONAL INFORMATION:TEA1507(IC701)
ndbook, full pagewidth
1
VSUPPLYCCSTART-UP8DRAIN
MANAGEMENTCURRENT SOURCE
clamp7HVS
internalUVLO startn.c.
supplyVALLEY
M-level
S1
2VOLTAGE4DEM
GND
CONTROLLEDLOGIC
OSCILLATOR
100 mV
OVER-
FREQUENCYVOLTAGE
CONTROLPROTECTION
OVER-6
LOGICDRIVERDRIVER
TEMPERATURE
PROTECTION
Iss
3
CTRL-1POWER-ONLEB
0.5 V
RESETSQsoft
start
blank
S2
UVLORQ
2.5 V5
Isense
burstOCP
detect
MAXIMUMshort
0.75 V
ON-TIMEwinding
PROTECTION
TEA1507
OVERPOWER
PROTECTION
MGU230
Block diagram.
PINNING
SYMBOL PINDESCRIPTION
VCC1supply voltage
GND2groundhandbook, halfpage
VCC 18 DRAIN
CTRL3control input
GND 27 HVS
DEM4input from auxiliary winding for
TEA1507
demagnetization timing, OVP and OPPCTRL 36 DRIVER
Isense5programmable current sense inputDEM 45 Isense
DRIVER6gate driver outputMGU231
HVS7high voltage safety spacer, not
connected
DRAIN8drain of external MOS switch, input for Pin configuration.
start-up current and valley sensing
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ACEC
