TSM006
Primary PWM Controller
s
s
s
s
s
s
s
s
s
s
s
s
s
s
Current-mode PWM Controller
High-current output drive suitable for
Power MOSFET
Automatic burst mode in zero-load
condition
Primary overcurrent protection
(hiccup mode)
Internal leading edge blanking on current
sense
External slope compensation capability
Programmable soft start
Frequency modulation for low emi
Accurate oscillator frequency
77% duty cycle limitation
5V reference
Under voltage protection
Thermal shutdown at 130°C
2kV ESD protection
D
SO-14
(Plastic MicroPackage)
PIN CONNECTIONS
(top view)
DESCRIPTION
The TSM006 integrated circuits incorporate all
circuitry to implement off line or DC-DC power
supply applications using a fixed frequency
current mode control.
Based on a standard current mode PWM
controller, these devices include additional
features for higher integration.
APPLICATION
so
b
O
s
AC/DC adapter
D =
Small Outline Package (SO) - also available in Tape & Reel (DT)
ro
P
te
le
du
(s
ct
-
)
so
b
O
te
le
ro
P
uc
d
Dis
14
s)
t(
1 Rt/Ct
2 Fm
3 Cs
4 Bl
5 Ss
6 Comp
7 Bs
Rex 13
Vref
Vin
Out
Pgnd
Cslope
12
11
10
9
8
ORDER CODES
Part Number
TSM006ID
TSM006IDT
Temperature Range
0, +105°C
Package
SO
Packaging
Tube
Tape & Reel
Marking
TSM006
TSM006
July 2004
Revision 1
1/13
TSM006
1
Block Diagram
Block Diagram
14
DIS
Disable_Latch
Thermal
Shutdown
Vin
Hiccup_Latch
Icomp
600µA
UVLO
Standby
Vref
Vref
12
Cref
Vref_Status
BS
7
4
6
BL
Burst_Latch
2R
Comp
1V
R
Comp_Cs
28V
3
Cs
Comp Clamp = Vss
LEB
Vref
Rt
8
Cslope
Slop_Compensation
1
Ct
Rt/Ct
Comp_Osc
Idct1
300µA
Cs_Latch
R
S
Q
!Q
Fm
2
Cfm
Iiss
10µA
S
Vref
Frequency mod.
0.5V
Comp_Hiccup
R
5
Css
Soft start
Ss
Idss1
1µA
Idss2
1mA
PIN DESCRIPTION
Name
RT/CT
FM
CS
BL
SS
COMP
BS
CSLOPE
PGND
OUT
VIN
VREF
REX
DIS
so
b
O
r
P
te
le
SO14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
du
o
(s
ct
-
)
bs
O
Start up_Latch
et
l
o
Q
!Q
P
e
ro
uc
d
Vin
11
Out
10
Rb
9
Pgnd
s)
t(
Current source
REX
13
Rex
Type
Function
Sets the oscillator frequency and maximum duty cycle
Frequency modulation
Current sense.
Burst level
Soft start and hiccup timing, latched disable input.
Current comparator for current mode control.
Burst mode status
Slope compensation
Power ground
Totem pole output to direct drive a power MOSFET.
Supply input voltage.
+5V Voltage reference
External resistor for internal constant current
Latched disable
Timing capacitor
Analog input
Analog input
Analog output
Timing capacitor
Analog input
Output input
Analog output
Power supply
Analog output
Power supply
Analog output
Analog input
Analog input
2/13
Absolute Maximum Ratings
2
Absolute Maximum Ratings
Symbol
Vin
DC Supply Voltage
Value
-0.3 to self limit
0.1
1
-0.3 to 6.5
6
-0.3 to 8
-0.3 to Vin
-0.3 to Vref
500
-40 to 150
150
2
TSM006
Unit
V
A
A
V
mA
V
V
V
mW
°C
°C
kV
DC Supply Voltage (Iin<50mA)
1
Io
DC output current
Iopeak
Peak output current
Vcomp
COMP terminal voltage
Isinkcomp COMP terminal sink current
Vss
SS terminal voltage
Vout
OUT terminal voltage
Other terminal voltage (CT, VREF, BS, BL, CSLOPE REX, CS,
Vter
FM, DIS)
Pt
Power dissipation at 25°C
Tstg
Storage temperature
Tj
Junction temperature
ESD
Electrostatic Discharge
1)
All voltage values, except differential voltage are with respect to network ground terminal (GND).
OPERATING CONDITIONS
Symbol
Vcc
Toper
Parameter
DC Supply Conditions
Operating Free Air Temperature Range
so
b
O
r
P
te
le
du
o
(s
ct
-
)
bs
O
et
l
o
P
e
ro
Value
8 to 20
0 to 105
uc
d
s)
t(
Unit
V
°C
3/13
TSM006
3
Electrical Characteristics
Symbol
Main oscillator
8≤Vin≤20V, 0≤Ta≤105°C
Fosco
FoscL
Fjit
Ffm
Vthct
Vtlct
∆Vct
Idct1
Idct2
Disable
Vdis
Vref
∆Vline
∆Vload
∆Vtotal
Ios
IsinkCP
IsrcCP
Comp
Icomp
Avcs
Vz1
PSRR
Source current
Gain
Maximum sensing voltage
Power supply voltage rejection ratio
Current sense
Voltage threshold
Voltage reference
Line regulation
Load regulation
Total variation
Short circuit current
Sink current
Source current
Lower oscillating frequency
Upper oscillating frequency
Frequency jitter
Frequency modulation
Upper trip point
Lower trip point
Amplitude
Discharge current
Current at Ct in UVLO
Vfm=GND
Vfm=Vref
Fjit=Fosco - FoscL
Vfm=GND
Vfm=GND
Vfm=GND
Vct=2V
Vct=1V
Parameter
Test Condition
Electrical Characteristics
Tamb = 25°C, Vin=15V, Rt=39k, Ct=470pF, Rex=27k, Cfm=1nF unless otherwise specified
Min
Typ
Max
Unit
63
57.6
6
68
62
7
4.5
3.0
1.4
1.6
300
3
2.65
5.00
5
10
5.00
73
66.4
8
kHz
kHz
kHz
kHz
V
V
V
µA
mA
1
2.5
4.91
2.8
Vref reference pin
12V
≤
Vin
≤
20V
1mA
≤
Iref
≤
5mA
Line, load, temp
Vref=0
Slope Compensation
Vct=2.2V, VCslope=1V
Vct=2.2V, VCslope=0V
Leading edge blanking
LEB
Output
VOL1
VOL2
VOH1
VOH2
tr
tf
VOL3
Fout
DCmax
b
O
so
r
P
te
le
Delay to output
du
o
(s
ct
-
)
bs
O
et
l
o
P
e
2
0.5
2.85
0.9
4.85
10
od
r
90
0.6
3.00
1.0
70
ct
u
5.09
10
20
5.15
s)
(
V
V
mV
mV
V
mA
µA
mA
0.7
3.15
1.1
mA
Vcomp=5V
0V
≤
Vcs
≤
0.8V
Vcomp=5V
8V
≤
Vin
≤
20V
Vcs = 0 to 2 V
Vcomp = 2 V
V
dB
280
ns
Output low voltage 1
Output low voltage 2
Output high voltage 1
Output high voltage 2
Rise time
Fall time
UVLO saturation
Output frequency
Maximum Duty Cycle
Iosink=20mA
Iosink=200mA
Iosource=20mA
Iosource=200mA
CL=1nF, 10% to 90%
CL=1nF, 90% to 10%
Vin=5V, Iosink=1mA
Option 1
Option 1
0.8
Vin-2.0
Vin-3.0
70
40
Fosc
77.5
1.0
2.2
100
60
0.5
V
V
V
V
ns
ns
V
kHz
%
4/13
Electrical Characteristics
TSM006
Symbol
Soft start
Iiss
dIiss
Idss1
Idss2
Iiss/Idss1
VHss
VLss
VH
VL
Iin
Iidle
Istby
Vclamp
Burst
Vbsol
Iohbs
Vbl1
Vbl1hyst
Vbl2
Hiccup
Vz2
Vhicc
Parameter
Test Condition
Min
Typ
Max
Unit
µA
µA
µA
mA
V
V
V
V
mA
mA
µA
V
V
µA
V
V
V
Charge current
Temperature stability
Discharge current (hiccup)
Sink current (uvlo)
Charge/discharge ratio
Clamp voltage
Low voltage (uvlo)
UVLO top threshold
UVLO bottom threshold
Operating current
Supply current in idle mode
Supply current in standby mode
Clamp voltage
Output low voltage
Leakage current
Threshold level on Comp to enter
Burst mode
Vbl1 Hysteresis
Threshold level on Comp to exit
burst mode
Threshold level on Cs to enter Hic-
cup mode
Threshold level on Ss to exit Hiccup
mode
Vss=2V
0°C
≤
Ta
≤
105°C
Vss=2V, Vcs=2V
Vss=2V, Vin=7V
8
7
3
10
10
1
10
12
13
1.2
11
0.5
4
Vin=7V, Idss=1mA
11.5
8.0
CL=1nF
Vcomp=1V
Vin<VH
Iin=50mA
Iobs=1mA
Vbs=5V
12
8.4
4.5
3.3
40
25
0.3
2
Under Voltage Lockout (UVLO)
12.5
8.8
5.0
3.8
60
30
Supply current
22
BL pin left unconnected
so
b
O
r
P
te
le
du
o
(s
ct
-
)
so
b
O
te
le
ro
P
0.3
0.5
1.25
uc
d
s)
t(
1.75
1.15
1.25
1.35
V
V
5/13
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