HA17384HRP Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HA17384HRP

High Speed Current Mode PWM Control IC for Switching Power Supply

Hitachi -> Renesas Electronics 

HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP

Electrical Characteristics (cont)

Current Sensing Part

Item

Symbol Min Typ Max Unit Test Condition

Note

Voltage gain

AVCS

2.85 3.00 3.15 V/V VFB = 0 V

1

Maximum sensing voltage VthCS

0.9 1.0 1.1 V

Power supply voltage

PSRR

—

70

—

dB 12 V ≤ VIN ≤ 25 V

2

rejection ratio

Input bias current

Current sensing

response time

I BCS

—

–2

–10 µA VCS = 2 V

tpd

50 100 150 ns Time from when VCS

3

becomes 2 V to when

output becomes “L” (2 V)

Notes: 1. The gain this case is the ratio of error amplifier output change to the current-sensing threshold

voltage change.

2. Reference value for design.

3. Current sensing response time tpd is definded a shown in the figure 1.

Vth

VCS

VOUT

(PWM)

tpd

Figure 1 Definition of Current Sensing Response Time tpd

PWM Output Part

Item

Symbol

Output low voltage 1

Output low voltage 2

Output high voltage 1

Output high voltage 2

Output low voltage at

standby mode

VOL1

VOL2

VOH1

VOH2

VOL STB

Rise time

Fall time

Maximum ON duty

tr

tf

Du max

Minimum ON duty

Du min

Notes: 1. Pulse application test

Min

—

—

13.0

12.0

—

—

—

94

—

Typ

0.7

1.5

13.5

13.3

0.8

80

70

96

—

Max

1.5

2.2

—

—

1.1

150

130

100

0

Unit

V

V

V

V

V

ns

ns

%

%

Test Condition

losink = 20 mA

losink = 200 mA

losource = –20 mA

losource = –200 mA

VIN = 5 V,

losink = 1 mA

CL = 1000 pF

CL = 1000 pF

Note

1

1

9

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