TEA1716T
NXP Semiconductors
Resonant power supply control IC with PFC
Table 2.
Pin description …continued
Symbol
Pin
Description
HB
15
reference for high-side driver; input for half-bridge slope detection;
externally connected to half-bridge node HB between HBC MOSFETs (see
Figure 17)
n.c.
16
not connected; high-voltage spacer
SNSCURHBC 17
sense input for momentary HBC current; externally connected to resonant
current sense resistor
SGND
18
19
20
signal ground; reference (ground) for IC.
CFMIN
minimum frequency setting for HBC; externally connected to capacitor
SNSBURST
sense input for burst stop activation; externally connected to resistive
divided SNSFB voltage
SNSFB
21
22
sense input for output voltage regulation feedback; externally connected to
optocoupler and pull-up resistor
SSHBC/EN
combined soft start timing of HBC and IC enable input; enabling of PFC or
PFC and HBC controllers; externally connected to soft start capacitor and
enable pull-down signal
RCPROT
23
24
protection timer setting for time-out and restart; externally connected to
resistor and capacitor
SNSBOOST
sense input for boost voltage; externally connected to resistive divided
boost voltage
7. Functional description
7.1 Overview of IC modules
The functionality of the TEA1716 can be grouped as follows:
• Supply module:
Supply management for the IC; includes the restart and (latched) shut-down states
• Protection and restart timer:
Externally adjustable timer used for delayed protection and restart timing
• Enable input:
Control input for enabling and disabling the controllers; very low current consumption
when disabled
• PFC controller:
Controls and protects the power factor converter; generates a 400 V (DC) boost
voltage from the rectified AC mains input with a high-power factor
• HBC controller:
Controls and protects the resonant converter; generates a regulated (mains isolated)
output voltage from the 400 V (DC) boost voltage
Figure 1 shows the block diagram of the TEA1716. A typical application is illustrated in
Figure 17.
TEA1716T
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Objective data sheet
Rev. 1 — 27 January 2012
6 of 46
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