Philips TEA1610T, TEA1610P Datasheet

INTEGRATED CIRCUITS

DATA SHEET

TEA1610P; TEA1610T

Zero-voltage-switching resonant converter controller

Product specification			2001 Apr 25
File under Integrated Circuits, IC11

Philips Semiconductors	Product specification

	Zero-voltage-switching	TEA1610P; TEA1610T
	resonant converter controller
FEATURES
∙	Integrated high voltage level-shift function
∙	Integrated high voltage bootstrap diode
∙	Transconductance error amplifier for ultra high-ohmic
	regulation feedback	handbook, halfpage	VHS
∙	Latched shut-down circuit for overcurrent and
		VDD
	overvoltage protection		bridge voltage
∙	Low start-up current (green function)		supply
			(high side)
∙	Adjustable minimum and maximum frequencies		MOSFET
∙	Adjustable dead time		SWITCH
∙	Undervoltage lockout.	TEA1610	HALF-
				RESONANT
			BRIDGE
				CONVERTER
			CIRCUIT
GENERAL DESCRIPTION
The TEA1610 is a monolithic integrated circuit				MGU336
implemented in a high-voltage DMOS process. The circuit
		signal
is a high voltage controller for a zero-voltage switching		ground
resonant converter. The IC provides the drive function for		power ground
two discrete power MOSFETs in a half-bridge
configuration. It also includes a level-shift circuit, an
oscillator with accurately-programmable frequency range,		Fig.1	Basic configuration.
a latched shut-down function and a transconductance
error amplifier.
To guarantee an accurate 50% switching duty factor, the
oscillator signal passes through a divide-by-two flip-flop		APPLICATIONS
before being fed to the output drivers.

The circuit is very flexible and enables a broad range of			∙	TV and monitor power supplies
			∙	High voltage power supplies.
applications for different mains voltages.
QUICK REFERENCE DATA
SYMBOL		PARAMETER			CONDITIONS	MAX.	UNIT
VHS	bridge voltage supply (high side)					600	V
IGH(source); IGL(source)	gate driver source current					−225	mA
IGH(sink); IGL(sink)	gate driver sink current					300	mA
fbridge(max)	maximum bridge frequency				Cf = 100 pF (see	550	kHz
					Fig.10)
VI(CM)	error amplifier common mode input voltage					2.5	V
ORDERING INFORMATION
TYPE NUMBER				PACKAGE
	NAME			DESCRIPTION			VERSION
TEA1610P	DIP16	plastic dual in-line package; 16 leads (300 mil); long body					SOT38-1
TEA1610T	SO16	plastic small outline package; 16 leads; body width 3.9 mm;					SOT109-2
		low stand-off height

2001 Apr 25

2

Philips Semiconductors	Product specification

Zero-voltage-switching

TEA1610P; TEA1610T

resonant converter controller

BLOCK DIAGRAM

handbook, full pagewidth		VDD
		11
								8
			BOOTSTRAP					VDD(F)
		SUPPLY						7
					LEVEL		HIGH SIDE
					SHIFTER		DRIVER	GH
			TEA1610
								6
			reset					SH
							LOW SIDE	10
							DRIVER	GL
								4
			start/stop oscillation		LOGIC			PGND
								15
			shut-down					SD
SGND	9		start-up				2.33 V
						2
I+	2				×2		Icharge
		gm
I−	1
							OSCILLATOR
		ERROR
		AMPLIFIER				0.6 V
		2.5 V		3 V			Idischarge
		5	3	14	16	12	13
					VREF			MGU337
		n.c.	VCO	IRS		IFS	CF

Fig.2 Block diagram.

2001 Apr 25

3

Philips Semiconductors	Product specification

Zero-voltage-switching

TEA1610P; TEA1610T

resonant converter controller

PINNING

SYMBOL	PIN	DESCRIPTION
I−	1	error amplifier inverting input
I+	2	error amplifier non-inverting input
VCO	3	error amplifier output
PGND	4	power ground
n.c.	5	not connected (high voltage spacer)
SH	6	high side switch source
GH	7	gate of the high side switch
VDD(F)	8	floating supply voltage for the high side
		driver
SGND	9	signal ground
GL	10	gate of the low side switch
VDD	11	supply voltage
IFS	12	oscillator discharge current input
CF	13	oscillator capacitor
IRS	14	oscillator charge current input
SD	15	shut-down input
VREF	16	reference voltage

handbook, halfpage
I−	1		16	VREF
I+
	2		15	SD
VCO	3		14	IRS
PGND	4	TEA1610P	13	CF
n.c.	5		12	IFS
SH	6		11	VDD
GH	7		10	GL
VDD(F)	8		9	SGND
		MGU338

Fig.3 Pin configuration: TEA1610P.

handbook, halfpage
I−	1			16	VREF
I+
	2			15	SD
VCO	3			14	IRS
PGND	4		TEA1610T	13	CF
n.c.	5			12	IFS
SH	6			11	VDD
GH	7			10	GL
VDD(F)	8			9	SGND
			MGU347

Fig.4 Pin configuration: TEA1610T.

2001 Apr 25

4

Philips Semiconductors	Product specification

Zero-voltage-switching

TEA1610P; TEA1610T

resonant converter controller

FUNCTIONAL DESCRIPTION

Start-up

When the applied voltage at VDD reaches VDD(initial) (see Fig.5), the low side power switch is turned-on while the

high side power switch remains in the non-conducting state. This start-up output state guarantees the initial

charging of the bootstrap capacitor (Cboot) used for the floating supply of the high side driver.

During start-up, the voltage on the frequency capacitor (Cf) is zero and defines the start-up state. The output voltage of the error amplifier is kept constant (typ. 2.5 V) and switching starts at about 80% of the maximum frequency at the moment pin VDD reaches the start level.

The start-up state is maintained until VDD reaches the start level (13.5 V), the oscillator is activated and the converter starts operating.

VDD(start)

VDD

VDD(initial)

0

GH-SH

0

GL

0

t

MGT998

Fig.5 Start-up.

2001 Apr 25

5

Philips Semiconductors	Product specification

Zero-voltage-switching

TEA1610P; TEA1610T

resonant converter controller

Oscillator

The internal oscillator is a current-controlled oscillator that generates a sawtooth output. The frequency of the sawtooth is determined by the external capacitor Cf and the currents flowing into the IFS and IRS pins.

The minimum frequency and the dead time are set by the

capacitor Cf and resistors Rf(min) and Rdt. The maximum frequency is set by resistor R f (see Fig.10). The oscillator

frequency is exactly twice the bridge frequency to achieve an accurate 50% duty factor. An overview of the oscillator and driver signals is given in Fig.6.

CF

GH-SH

0

GL

0

dead time (high to low)

dead time (low to high)

t

MGT999

Fig.6 Oscillator and driver signals.

2001 Apr 25

6