TEA1713T_11 NXP [NXP Semiconductors], TEA1713T_11 Datasheet - Page 23

• Manufacturer Part Number: TEA1713T_11
• Description: Resonant power supply control IC with PFC
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
TEA1713T
Product data sheet
Two external components determine the frequency range:
The oscillator frequency depends on the charge and discharge currents of C
(dis-)charge current contains a fixed component, I
frequency, and a variable component that is 4.9 times greater than the current in pin
RFMAX. I
The maximum frequency of the oscillator is limited internally. The HB frequency is limited
to f
C
Fig 12. Determination of frequency
•
•
•
•
•
fmin
limit(HB)
Capacitor C
frequency in combination with an internally trimmed current source I
Resistor R
and thus the maximum frequency.
The voltage on pin RFMAX is V
The voltage on pin RFMAX is V
frequency.
The voltage on pin RFMAX is V
frequency.
and f
RFMAX
(min. 500 kHz).
HB
.
fmax
FIXED f
All information provided in this document is subject to legal disclaimers.
fmin
is determined by the value of R
connected between pin RFMAX and ground sets the frequency range
connected between pin CFMIN and ground sets the minimum
min
Rev. 2 — 9 February 2011
CURRENT
Figure 13
(DIS-)CHARGE CURRENT
POLARITY INVERSION
VOLTAGE PIN SSHBC
FRQUENCY via C
CONVERSION TO
(max 2.5 V)
PIN CFMIN
fmin(RFMAX)
fmax(fb)(RFMAX)
fmax(ss)(RFMAX)
illustrates the relationship between V
CONVERSION TO CURRENT
Resonant power supply control IC with PFC
fmin
VOLTAGE PIN RFMAX
(typ. 0 V) at the minimum frequency.
fmax
via R
(typ. 1.5 V) at the maximum feedback
osc(min)
(typ. 2.5 V) at the maximum soft start
and the voltage on pin RFMAX:
fmax
, that determines the minimum
FEEDBACK CURRENT
VOLTAGE (max 1.5 V)
CONVERSION TO
PIN SNSFB
TEA1713T
014aaa860
© NXP B.V. 2011. All rights reserved.
osc(min)
RFMAX
fmin
.
, R
. The
fmax
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