APW7098 Datasheet, PDF (5/30 Pages) Anpec Electronics Coropration – Two- Phase Buck PWM Controller with Integrated MOSFET Drivers

APW7098
Electrical Characteristics (Cont.)
Refer to the typical application circuits. These specifications apply over V_IN=12V, V_OUT=1.2V and T_A= -20 ~ 70°C, unless otherwise
specified. Typical values are at T_A=25°C. The V_5VCC is supplied by the internal regulator.
Symbol
Parameter
Test Conditions
APW7098
Unit
Min.
Typ.
Max.
ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
Slew Rate
RL = 10kΩ to the ground
-
85
-
dB
CL = 100pF, RL = 10kΩ to the ground
-
20
-
MHz
CL = 100pF, IO = 400µA
-
8
-
V/µs
Upper Clamp Voltage
IO = 1mA
2.7
3.0
-
V
Lower Clamp Voltage
IO = -1mA
-
-
0.1
V
COMP Pull-Low Resistance
In fault or shutdown condition
-
2
-
kΩ
OSCILLATOR
RT = GND
135
150
165
FOSC Oscillator Frequency
RT = Floating
270
300
330
kHz
RT = 5VCC
360
400
440
∆VOSC1/2
IRT
Oscillator Sawtooth Amplitude
RT Input Current
RT 5VCC Level
RT Floating Voltage
RT GND Level
RT = GND/5VCC(5V)
For FOSC =150kHz
For FOSC =300kHz
For FOSC =400kHz
-
1.5
-
V
-100
-
+100
µA
V5VCC-0.5
-
-
V
1.2
3.6 V5VCC-1.2 V
-
-
0.3
V
Maximum Duty Cycle
85
88
-
%
MOSFET GATE DRIVERS
UGATE1/2 Source Current
UGATE1/2 Sink Current
VBOOT = 12V, VUGATE-VPHASE = 2V
VBOOT = 12V, VUGATE-VPHASE = 2V
-
2.6
-
A
-
1
-
A
LGATE1/2 Source Current
LGATE1/2 Sink Current
VCC = 12V, VLGATE = 2V
VCC =12V, VLGATE = 2V
-
2.6
-
A
-
1.4
-
A
UGATE1/2 Source Resistance
UGATE1/2 Sink Resistance
VBOOT = 12V, 100mA Source Current
-
VBOOT = 12V, 100mA Sink Current
-
2.5
3.75
Ω
2
3
Ω
LGATE1/2 Source Resistance
VCC = 12V, 100mA Source Current
-
2
3
Ω
LGATE1/2 Sink Resistance
VCC = 12V, 100mA Sink Current
-
1.4
2.1
Ω
TD
Dead-Time
CURRENT SENSE AND DROOP FUNCTION
-
30
-
ns
ICSP CSP1/2 Pin Input Current
-100
-
+100
nA
Sourcing current
80
-
ICSN CSN1/2 Maximum Output Current R _CSN1/2 = 2kΩ,
Sinking current
15
-
-
µA
-
Current Sense Amplifier Bandwidth
-
3
-
MHz
DROOP Output Current Accuracy
DROOP Accuracy
Current Difference Between
Channel1/2 and Average Current
RDROOP = 2kΩ, VDROOP =0.005V
∆VFB = VDROOP/20, VDROOP = 1V
-
50
-
µA
-5
-
+5
mV
-10
-
+10
%
Copyright © ANPEC Electronics Corp.
5
Rev. A.6 - Oct., 2009
www.anpec.com.tw